Articles | Volume 7, issue 1
https://doi.org/10.5194/esurf-7-107-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-7-107-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Long-term erosion of the Nepal Himalayas by bedrock landsliding: the role of monsoons, earthquakes and giant landslides
École et Observatoire des Sciences de la Terre – Institut de
Physique du Globe de Strasbourg, Centre National de la
Recherche Scientifique UMR 7516, University of Strasbourg, 67084 Strasbourg
CEDEX, France
Robert Behling
Helmholtz Centre Potsdam, German Research Center for Geosciences
(GFZ), Telegrafenberg, 14473 Potsdam, Germany
Christoff Andermann
Helmholtz Centre Potsdam, German Research Center for Geosciences
(GFZ), Telegrafenberg, 14473 Potsdam, Germany
Jens M. Turowski
Helmholtz Centre Potsdam, German Research Center for Geosciences
(GFZ), Telegrafenberg, 14473 Potsdam, Germany
Luc Illien
Helmholtz Centre Potsdam, German Research Center for Geosciences
(GFZ), Telegrafenberg, 14473 Potsdam, Germany
Laboratoire de Géologie, Ecole Normale Supérieure, 24 Rue
Lhomond, 75000, Paris, France
Sigrid Roessner
Helmholtz Centre Potsdam, German Research Center for Geosciences
(GFZ), Telegrafenberg, 14473 Potsdam, Germany
Niels Hovius
Helmholtz Centre Potsdam, German Research Center for Geosciences
(GFZ), Telegrafenberg, 14473 Potsdam, Germany
Institute of Earth and Environmental Science, Potsdam
University, Potsdam, Germany
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Debris flows are mixtures of mud and rocks that can travel at high speeds across steep landscapes. Here, we propose a new model to describe how landscapes are shaped by debris flow erosion over long timescales. Model results demonstrate that the shapes of channel profiles are sensitive to uplift rate, meaning that it may be possible to use topographic data from steep channel networks to infer how erosion rates vary across a landscape.
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The locations of triggered landslides following a rainfall event can be identified in optical satellite images. However cloud cover associated with the rainfall means that these images cannot be used to identify landslide timing. Timings of landslides triggered during long rainfall events are often unknown. Here we present methods of using Sentinel-1 satellite radar data, acquired every 12 d globally in all weather conditions, to better constrain the timings of rainfall-triggered landslides.
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The size of grains delivered to rivers is an essential parameter for understanding erosion and sediment transport and their related hazards. In mountains, landslides deliver these rock fragments, but few studies have analyzed the landslide properties that control the resulting sizes. We present measurements on 17 landslides from Taiwan and show that their grain sizes depend on rock strength, landslide depth and drop height, thereby validating and updating a previous theory on fragmentation.
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Large earthquakes trigger thousands of landslides in the area of their epicentre. For three earthquake cases, we have determined the position of these landslides along hillslopes. These co-seismic landslides tend to cluster at ridge crests and slope toes. We show that crest clustering is specific to seismic triggering. But although co-seismic landslides locate higher in the landscape than rainfall-induced landslides, geological features strongly modulate their position along the hillslopes.
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Earth Surf. Dynam., 4, 727–742, https://doi.org/10.5194/esurf-4-727-2016, https://doi.org/10.5194/esurf-4-727-2016, 2016
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Rapid dissolution of bedrock and regolith mobilised by landslides can be an important control on rates of overall chemical weathering in mountain ranges. In this study we analysed a number of landslides and rivers in Taiwan to better understand why this occurs. We find that sulfuric acid resulting from rapid oxidation of highly reactive sulfides in landslide deposits drives the intense weathering and can set catchment-scale solute budgets. This could be a CO2 source in fast-eroding mountains.
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Fluvial sediment fluxes increased dramatically in Taiwan during Typhoon Morakot in 2009, which produced some of the heaviest landsliding on record. We analyzed fluvial discharge and suspended sediment concentration data at 87 gauging stations across Taiwan to quantify fluvial sediment responses since Morakot. In basins heavily impacted by landsliding, rating curve coefficients sharply increased during Morakot and then declined exponentially with a characteristic decay time of <10 years.
Ci-Jian Yang, Pei-Hao Chen, Erica D. Erlanger, Jens M. Turowski, Sen Xu, Tse-Yang Teng, Jiun-Chuan Lin, and Jr-Chuang Huang
Earth Surf. Dynam., 11, 475–486, https://doi.org/10.5194/esurf-11-475-2023, https://doi.org/10.5194/esurf-11-475-2023, 2023
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Observations of the interaction between extreme physical erosion and chemical weathering dynamics are limited. We presented major elements of stream water in the badland catchment at 3 h intervals during a 3 d typhoon. The excess sodium in the evaporite deposits causes material dispersion through deflocculation, which enhances the suspended sediment flux. Moreover, we observed a shift from predominantly evaporite weathering at peak precipitation to silicate weathering at peak discharge.
Katy Burrows, Odin Marc, and Dominique Remy
Nat. Hazards Earth Syst. Sci., 22, 2637–2653, https://doi.org/10.5194/nhess-22-2637-2022, https://doi.org/10.5194/nhess-22-2637-2022, 2022
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The locations of triggered landslides following a rainfall event can be identified in optical satellite images. However cloud cover associated with the rainfall means that these images cannot be used to identify landslide timing. Timings of landslides triggered during long rainfall events are often unknown. Here we present methods of using Sentinel-1 satellite radar data, acquired every 12 d globally in all weather conditions, to better constrain the timings of rainfall-triggered landslides.
Aaron Bufe, Kristen L. Cook, Albert Galy, Hella Wittmann, and Niels Hovius
Earth Surf. Dynam., 10, 513–530, https://doi.org/10.5194/esurf-10-513-2022, https://doi.org/10.5194/esurf-10-513-2022, 2022
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Erosion modulates Earth's carbon cycle by exposing a variety of lithologies to chemical weathering. We measured water chemistry in streams on the eastern Tibetan Plateau that drain either metasedimentary or granitoid rocks. With increasing erosion, weathering shifts from being a CO2 sink to being a CO2 source for both lithologies. However, metasedimentary rocks typically weather 2–10 times faster than granitoids, with implications for the role of lithology in modulating the carbon cycle.
Michael Dietze, Rainer Bell, Ugur Ozturk, Kristen L. Cook, Christoff Andermann, Alexander R. Beer, Bodo Damm, Ana Lucia, Felix S. Fauer, Katrin M. Nissen, Tobias Sieg, and Annegret H. Thieken
Nat. Hazards Earth Syst. Sci., 22, 1845–1856, https://doi.org/10.5194/nhess-22-1845-2022, https://doi.org/10.5194/nhess-22-1845-2022, 2022
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The flood that hit Europe in July 2021, specifically the Eifel, Germany, was more than a lot of fast-flowing water. The heavy rain that fell during the 3 d before also caused the slope to fail, recruited tree trunks that clogged bridges, and routed debris across the landscape. Especially in the upper parts of the catchments the flood was able to gain momentum. Here, we discuss how different landscape elements interacted and highlight the challenges of holistic future flood anticipation.
Robert Emberson, Dalia B. Kirschbaum, Pukar Amatya, Hakan Tanyas, and Odin Marc
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Understanding where landslides occur in mountainous areas is critical to support hazard analysis as well as understand landscape evolution. In this study, we present a large compilation of inventories of landslides triggered by rainfall, including several that are described here for the first time. We analyze the topographic characteristics of the landslides, finding consistent relationships for landslide source and deposition areas, despite differences in the inventories' locations.
Odin Marc, Jens M. Turowski, and Patrick Meunier
Earth Surf. Dynam., 9, 995–1011, https://doi.org/10.5194/esurf-9-995-2021, https://doi.org/10.5194/esurf-9-995-2021, 2021
Short summary
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The size of grains delivered to rivers is an essential parameter for understanding erosion and sediment transport and their related hazards. In mountains, landslides deliver these rock fragments, but few studies have analyzed the landslide properties that control the resulting sizes. We present measurements on 17 landslides from Taiwan and show that their grain sizes depend on rock strength, landslide depth and drop height, thereby validating and updating a previous theory on fragmentation.
Jens Martin Turowski
Earth Surf. Dynam., 8, 103–122, https://doi.org/10.5194/esurf-8-103-2020, https://doi.org/10.5194/esurf-8-103-2020, 2020
Short summary
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Bedrock channels are the conveyor belts of mountain regions, evacuating sediment produced by erosion. Bedrock channel morphology and dynamics affect sediment transport rates and local erosion and set the base level for hillslope response. Here, using mechanistic considerations of the processes of fluvial erosion and transport, and considerations of the mass balance of sediment and bedrock, I discuss the principles governing steady-state channel morphology and the dynamic paths to achieve it.
Claire Rault, Alexandra Robert, Odin Marc, Niels Hovius, and Patrick Meunier
Earth Surf. Dynam., 7, 829–839, https://doi.org/10.5194/esurf-7-829-2019, https://doi.org/10.5194/esurf-7-829-2019, 2019
Short summary
Short summary
Large earthquakes trigger thousands of landslides in the area of their epicentre. For three earthquake cases, we have determined the position of these landslides along hillslopes. These co-seismic landslides tend to cluster at ridge crests and slope toes. We show that crest clustering is specific to seismic triggering. But although co-seismic landslides locate higher in the landscape than rainfall-induced landslides, geological features strongly modulate their position along the hillslopes.
Mitch K. D'Arcy, Taylor F. Schildgen, Jens M. Turowski, and Pedro DiNezio
Earth Surf. Dynam., 7, 755–771, https://doi.org/10.5194/esurf-7-755-2019, https://doi.org/10.5194/esurf-7-755-2019, 2019
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The age of formation of sedimentary deposits is often interpreted to record information about past environmental changes. Here, we show that the timing of abandonment of surfaces also provides valuable information. We derive a new set of equations that can be used to estimate when a sedimentary surface was abandoned based on what is known about its activity from surface dating. Estimates of abandonment age can benefit a variety of geomorphic analyses, which we illustrate with a case study.
Odin Marc, André Stumpf, Jean-Philippe Malet, Marielle Gosset, Taro Uchida, and Shou-Hao Chiang
Earth Surf. Dynam., 6, 903–922, https://doi.org/10.5194/esurf-6-903-2018, https://doi.org/10.5194/esurf-6-903-2018, 2018
Short summary
Short summary
Rainfall-induced landslides cause significant damage and fatality worldwide, but we have few datasets constraining the impact of individual storms. We present and analyze 8 landslide inventories, with >150 to >150 00 landslides, comprehensively representing the landslide population caused by 8 storms from Asia and the Americas. We found that the total storm rainfall is a major control on total landsliding, landslide size, and that storms trigger landslides on less steep slopes than earthquakes.
Anne Schöpa, Wei-An Chao, Bradley P. Lipovsky, Niels Hovius, Robert S. White, Robert G. Green, and Jens M. Turowski
Earth Surf. Dynam., 6, 467–485, https://doi.org/10.5194/esurf-6-467-2018, https://doi.org/10.5194/esurf-6-467-2018, 2018
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On 21 July 2014, a voluminous landslide entered the caldera lake at Askja, Iceland, and created tsunami waves inundating famous tourist spots. The high hazard potential of the site motivated our study in which we analysed seismic data and found a precursory tremor signal intensifying in the 30 min before the landslide. Our paper shows the potential of seismic monitoring techniques to detect precursory activity before a big landslide that could be used for an early-warning system.
Jens Martin Turowski
Earth Surf. Dynam., 6, 29–48, https://doi.org/10.5194/esurf-6-29-2018, https://doi.org/10.5194/esurf-6-29-2018, 2018
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Bedrock channels are a key component of mountainous landscapes. Here, a new model of the steady-state morphology, including channel width, slope and sinuosity, is derived from process physics considerations. The model compares favourably to observed scaling relations.
Michael Dietze, Jens M. Turowski, Kristen L. Cook, and Niels Hovius
Earth Surf. Dynam., 5, 757–779, https://doi.org/10.5194/esurf-5-757-2017, https://doi.org/10.5194/esurf-5-757-2017, 2017
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Rockfall is an essential geomorphic process and a hazard in steep landscapes which is hard to constrain with traditional approaches. Seismic methods allow for the detection, location, characterisation and linking of events to triggers by lag times. This new technique reveals 49 rockfalls in 6 months with seasonally varying locations. Freeze–thaw action accounts for only 5 events, whereas 19 rockfalls were caused by rain with a 1 h peak lag time, and 17 events were due to diurnal thermal forcing.
Albrecht von Boetticher, Jens M. Turowski, Brian W. McArdell, Dieter Rickenmann, Marcel Hürlimann, Christian Scheidl, and James W. Kirchner
Geosci. Model Dev., 10, 3963–3978, https://doi.org/10.5194/gmd-10-3963-2017, https://doi.org/10.5194/gmd-10-3963-2017, 2017
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The open-source fluid dynamic solver presented in v. Boetticher et al. (2016) combines a Coulomb viscosplastic rheological model with a Herschel–Bulkley model based on material properties for 3-D debris flow simulations. Here, we validate the solver and illustrate the model sensitivity to water content, channel curvature, content of fine material and channel bed roughness. We simulate both laboratory-scale and large-scale debris-flow experiments, using only one of the two calibration parameters.
Michael Dietze, Solmaz Mohadjer, Jens M. Turowski, Todd A. Ehlers, and Niels Hovius
Earth Surf. Dynam., 5, 653–668, https://doi.org/10.5194/esurf-5-653-2017, https://doi.org/10.5194/esurf-5-653-2017, 2017
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We use a seismometer network to detect and locate rockfalls, a key process shaping steep mountain landscapes. When tested against laser scan surveys, all seismically detected events could be located with an average deviation of 81 m. Seismic monitoring provides insight to the dynamics of individual rockfalls, which can be as small as 0.0053 m3. Thus, seismic methods provide unprecedented temporal, spatial and kinematic details about this important process.
Antonius Golly and Jens M. Turowski
Earth Surf. Dynam., 5, 557–570, https://doi.org/10.5194/esurf-5-557-2017, https://doi.org/10.5194/esurf-5-557-2017, 2017
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Researchers of fluvial geomorphology require reliable information on channel width and its change in space and time. For example, to study bank erosion rates we need the local position of channel banks before and after a high flood event. Although deriving these metrics seems simple, researchers often use manual or arbitrary approaches that are not objective and reproducible. Here, we present an open-source software tool
cmgo(R package) that meets the requirements of academic research.
Odin Marc, Patrick Meunier, and Niels Hovius
Nat. Hazards Earth Syst. Sci., 17, 1159–1175, https://doi.org/10.5194/nhess-17-1159-2017, https://doi.org/10.5194/nhess-17-1159-2017, 2017
Short summary
Short summary
We present an analytical expression for the surface area of the region within which landslides induced by a given earthquake are distributed. The expression is based on seismological scaling laws. Without calibration the model predicts, within a factor of 2, up to 49 out of 83 cases reported in the literature and agrees with the smallest region around the fault containing 95 % of the total landslide area. This model may be used for hazard assessment based on early earthquake detection parameters.
Fabian Walter, Arnaud Burtin, Brian W. McArdell, Niels Hovius, Bianca Weder, and Jens M. Turowski
Nat. Hazards Earth Syst. Sci., 17, 939–955, https://doi.org/10.5194/nhess-17-939-2017, https://doi.org/10.5194/nhess-17-939-2017, 2017
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Debris flows are naturally occuring mass motion events, which mobilize loose material in steep Alpine torrents. The destructive potential of debris flows is well known and demands early warning. Here we apply the amplitude source location (ASL) method to seismic ground vibrations induced by a debris flow event in Switzerland. The method efficiently detects the initiation of the event and traces its front propagation down the torrent channel.
Jens M. Turowski and Rebecca Hodge
Earth Surf. Dynam., 5, 311–330, https://doi.org/10.5194/esurf-5-311-2017, https://doi.org/10.5194/esurf-5-311-2017, 2017
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Bedrock incision by rivers is driven by the impacts of sediment particles moved by the water flow. Sediment residing on the bed can protect the rock from impacts, thereby reducing erosion rates, a phenomenon known as the cover effect. The cover effect has been shown to be important in many field and laboratory experiments. Here, we develop a mathematical framework to describe the cover effect which can be used to compare data and to predict the extent of cover in streams.
Alexander R. Beer, James W. Kirchner, and Jens M. Turowski
Earth Surf. Dynam., 4, 885–894, https://doi.org/10.5194/esurf-4-885-2016, https://doi.org/10.5194/esurf-4-885-2016, 2016
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Spatial bedrock erosion data from stream channels are important for engineering issues and landscape evolution model assessment. However, acquiring such data is challenging and only few data sets exist. Detecting changes in repeated photographs of painted bedrock surfaces easily allows for semi-quantitative conclusions on the spatial distribution of sediment transport and its effects: abrasion on surfaces facing the streamflow and shielding of surfaces by abundant sediment.
Robert Emberson, Niels Hovius, Albert Galy, and Odin Marc
Earth Surf. Dynam., 4, 727–742, https://doi.org/10.5194/esurf-4-727-2016, https://doi.org/10.5194/esurf-4-727-2016, 2016
Short summary
Short summary
Rapid dissolution of bedrock and regolith mobilised by landslides can be an important control on rates of overall chemical weathering in mountain ranges. In this study we analysed a number of landslides and rivers in Taiwan to better understand why this occurs. We find that sulfuric acid resulting from rapid oxidation of highly reactive sulfides in landslide deposits drives the intense weathering and can set catchment-scale solute budgets. This could be a CO2 source in fast-eroding mountains.
Albrecht von Boetticher, Jens M. Turowski, Brian W. McArdell, Dieter Rickenmann, and James W. Kirchner
Geosci. Model Dev., 9, 2909–2923, https://doi.org/10.5194/gmd-9-2909-2016, https://doi.org/10.5194/gmd-9-2909-2016, 2016
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Debris flows are characterized by unsteady flows of water with different content of clay, silt, sand, gravel, and large particles, resulting in a dense moving mixture mass. Here we present a three-dimensional fluid dynamic solver that simulates the flow as a mixture of a pressure-dependent rheology model of the gravel mixed with a Herschel–Bulkley rheology of the fine material suspension. We link rheological parameters to the material composition. The user must specify two free model parameters.
Arnaud Burtin, Niels Hovius, and Jens M. Turowski
Earth Surf. Dynam., 4, 285–307, https://doi.org/10.5194/esurf-4-285-2016, https://doi.org/10.5194/esurf-4-285-2016, 2016
M. C. Fuchs, R. Gloaguen, S. Merchel, E. Pohl, V. A. Sulaymonova, C. Andermann, and G. Rugel
Earth Surf. Dynam., 3, 423–439, https://doi.org/10.5194/esurf-3-423-2015, https://doi.org/10.5194/esurf-3-423-2015, 2015
A. von Boetticher, J. M. Turowski, B. W. McArdell, D. Rickenmann, M. Hürlimann, C. Scheidl, and J. W. Kirchner
Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmdd-8-6379-2015, https://doi.org/10.5194/gmdd-8-6379-2015, 2015
Preprint withdrawn
E. Pohl, M. Knoche, R. Gloaguen, C. Andermann, and P. Krause
Earth Surf. Dynam., 3, 333–362, https://doi.org/10.5194/esurf-3-333-2015, https://doi.org/10.5194/esurf-3-333-2015, 2015
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A semi-distributed hydrological model is used to analyse the hydrological cycle of a glaciated high-mountain catchment in the Pamirs.
We overcome data scarcity by utilising various raster data sets as meteorological input. Temperature in combination with the amount of snow provided in winter play the key role in the annual cycle.
This implies that expected Earth surface processes along precipitation and altitude gradients differ substantially.
M. Jochner, J. M. Turowski, A. Badoux, M. Stoffel, and C. Rickli
Earth Surf. Dynam., 3, 311–320, https://doi.org/10.5194/esurf-3-311-2015, https://doi.org/10.5194/esurf-3-311-2015, 2015
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The export of coarse particulate organic matter (CPOM) from mountain catchments seems to be strongly linked to rising discharge, but the mechanism leading to this is unclear. We show that log jams in a steep headwater stream are an effective barrier for CPOM export. Exceptional discharge events play a dual role: First, they destroy existing jams, releasing stored material. Second, they intensify channel--hillslope coupling, thereby recruiting logs to the channel, around which new jams can form.
A. R. Beer and J. M. Turowski
Earth Surf. Dynam., 3, 291–309, https://doi.org/10.5194/esurf-3-291-2015, https://doi.org/10.5194/esurf-3-291-2015, 2015
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We applied a spatiotemporally highly resolved dataset of discharge, sediment transport and bedrock erosion data to assess the validity of landscape evolution models at the process scale (resolution of square meters and minutes). The tools effect is found to be the dominant driver of erosion and an easy model is able to predict measured erosion. For larger scales common discharge-dependend modeling with a discharge threshold is adequate to regive the overal trend of the erosion signal.
O. Marc and N. Hovius
Nat. Hazards Earth Syst. Sci., 15, 723–733, https://doi.org/10.5194/nhess-15-723-2015, https://doi.org/10.5194/nhess-15-723-2015, 2015
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We present how amalgamation (i.e. the mapping of several adjacent landslides as a single polygon) can distort results derived from landslide mapping. Errors on the total landslide volume and power-law exponent of the area–frequency distribution, resulting from amalgamation, may be up to 200 and 50%, respectively. We present an algorithm based on image and DEM analysis, for automatic identification of amalgamated polygons, allowing one to check and correct landslide inventories faster.
A. Burtin, N. Hovius, B. W. McArdell, J. M. Turowski, and J. Vergne
Earth Surf. Dynam., 2, 21–33, https://doi.org/10.5194/esurf-2-21-2014, https://doi.org/10.5194/esurf-2-21-2014, 2014
J. M. Turowski, A. Badoux, K. Bunte, C. Rickli, N. Federspiel, and M. Jochner
Earth Surf. Dynam., 1, 1–11, https://doi.org/10.5194/esurf-1-1-2013, https://doi.org/10.5194/esurf-1-1-2013, 2013
Related subject area
Physical: Geomorphology (including all aspects of fluvial, coastal, aeolian, hillslope and glacial geomorphology)
Downstream rounding rate of pebbles in the Himalaya
A physics-based model for fluvial valley width
Implications for the resilience of modern coastal systems derived from mesoscale barrier dynamics at Fire Island, New York
Quantifying the migration rate of drainage divides from high-resolution topographic data
Long-term monitoring (1953–2019) of geomorphologically active sections of Little Ice Age lateral moraines in the context of changing meteorological conditions
Coevolving edge rounding and shape of glacial erratics: the case of Shap granite, UK
Dimensionless argument: a narrow grain size range near 2 mm plays a special role in river sediment transport and morphodynamics
Path length and sediment transport estimation from DEMs of difference: a signal processing approach
Influence of cohesive clay on wave–current ripple dynamics captured in a 3D phase diagram
Statistical characterization of erosion and sediment transport mechanics in shallow tidal environments – Part 1: Erosion dynamics
Statistical characterization of erosion and sediment transport mechanics in shallow tidal environments – Part 2: Suspended sediment dynamics
Geomorphological and hydrological controls on sediment export in earthquake-affected catchments in the Nepal Himalaya
Optimization of passive acoustic bedload monitoring in rivers by signal inversion
Stochastic properties of coastal flooding events – Part 2: Probabilistic analysis
Field monitoring of pore water pressure in fully and partly saturated debris flows at Ohya landslide scar, Japan
Analysis of autogenic bifurcation processes resulting in river avulsion
Bedload transport fluctuations, flow conditions, and disequilibrium ratio at the Swiss Erlenbach stream: results from 27 years of high-resolution temporal measurements
Stochastic properties of coastal flooding events – Part 1: convolutional-neural-network-based semantic segmentation for water detection
Coexistence of two dune scales in a lowland river
Geomorphic risk maps for river migration using probabilistic modeling – a framework
Alpine hillslope failure in the western US: insights from the Chaos Canyon landslide, Rocky Mountain National Park, USA
Using repeat UAV-based laser scanning and multispectral imagery to explore eco-geomorphic feedbacks along a river corridor
Numerical modelling of the evolution of a river reach with a complex morphology to help define future sustainable restoration decisions
Method to evaluate large-wood behavior in terms of the convection equation associated with sediment erosion and deposition
Effects of seasonal variations in vegetation and precipitation on catchment erosion rates along a climate and ecological gradient: insights from numerical modeling
On the use of convolutional deep learning to predict shoreline change
Riverine Sediment Response to Deforestation in the Amazon Basin
On the use of packing models for the prediction of fluvial sediment porosity
Automated riverbed composition analysis using deep learning on underwater images
Marsh-induced backwater: the influence of non-fluvial sedimentation on a delta's channel morphology and kinematics
Spatial and temporal variations in rockwall erosion rates derived from cosmogenic 10Be in medial moraines at five valley glaciers around Pigne d'Arolla, Switzerland
Physical modeling of ice-sheet-induced salt movements using the example of northern Germany
Building a bimodal landscape: bedrock lithology and bed thickness controls on the morphology of Last Chance Canyon, New Mexico, USA
Geotechnical controls on erodibility in fluvial impact erosion
Linear-stability analysis of plane beds under flows with suspended loads
Stream hydrology controls on ice cliff generation, evolution, and survival on debris-covered glaciers
Estimating surface water availability in high mountain rock slopes using a numerical energy balance model
Sediment source and sink identification using Sentinel-2 and a small network of turbidimeters on the Vjosa River
Spatiotemporal bedload transport patterns over two-dimensional bedforms
Time-varying drainage basin development and erosion on volcanic edifices
Ice-buttressing-controlled rock slope failure on a cirque headwall, Lake District, UK
The probabilistic nature of dune collisions in 2D
Shape still matters: rockfall interactions with trees and deadwood in a mountain forest uncover a new facet of rock shape dependency
Earthquake contributions to coastal cliff retreat
Morphologic and morphometric differences between gullies formed in different substrates on Mars: new insights into the gully formation processes
Testing the sensitivity of the CAESAR-Lisflood landscape evolution model to grid cell size
Development of a machine learning model for river bed load
Modeling the spatially distributed nature of subglacial sediment transport and erosion
Confinement width and inflow-to-sediment discharge ratio control the morphology and braiding intensity of submarine channels: insights from physical experiments and reduced-complexity models
Decadal-scale decay of landslide-derived fluvial suspended sediment after Typhoon Morakot
Prakash Pokhrel, Mikael Attal, Hugh D. Sinclair, Simon M. Mudd, and Mark Naylor
Earth Surf. Dynam., 12, 515–536, https://doi.org/10.5194/esurf-12-515-2024, https://doi.org/10.5194/esurf-12-515-2024, 2024
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Pebbles become increasingly rounded during downstream transport in rivers due to abrasion. This study quantifies pebble roundness along the length of two Himalayan rivers. We demonstrate that roundness increases with downstream distance and that the rates are dependent on rock type. We apply this to reconstructing travel distances and hence the size of ancient Himalaya. Results show that the ancient river network was larger than the modern one, indicating that there has been river capture.
Jens Martin Turowski, Aaron Bufe, and Stefanie Tofelde
Earth Surf. Dynam., 12, 493–514, https://doi.org/10.5194/esurf-12-493-2024, https://doi.org/10.5194/esurf-12-493-2024, 2024
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Fluvial valleys are ubiquitous landforms, and understanding their formation and evolution affects a wide range of disciplines from archaeology and geology to fish biology. Here, we develop a model to predict the width of fluvial valleys for a wide range of geographic conditions. In the model, fluvial valley width is controlled by the two competing factors of lateral channel mobility and uplift. The model complies with available data and yields a broad range of quantitative predictions.
Daniel J. Ciarletta, Jennifer L. Miselis, Julie C. Bernier, and Arnell S. Forde
Earth Surf. Dynam., 12, 449–475, https://doi.org/10.5194/esurf-12-449-2024, https://doi.org/10.5194/esurf-12-449-2024, 2024
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We reconstructed the evolution of Fire Island, a barrier island in New York, USA, to identify drivers of landscape change. Results reveal Fire Island was once divided into multiple inlet-separated islands with distinct features. Later, inlets closed, and Fire Island’s landscape became more uniform as human activities intensified. The island is now less mobile and less likely to resist and recover from storm impacts and sea level rise. This vulnerability may exist for other stabilized barriers.
Chao Zhou, Xibin Tan, Yiduo Liu, and Feng Shi
Earth Surf. Dynam., 12, 433–448, https://doi.org/10.5194/esurf-12-433-2024, https://doi.org/10.5194/esurf-12-433-2024, 2024
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The drainage-divide stability provides new insights into both the river network evolution and the tectonic and/or climatic changes. Several methods have been proposed to determine the direction of drainage-divide migration. However, how to quantify the migration rate of drainage divides remains challenging. In this paper, we propose a new method to calculate the migration rate of drainage divides from high-resolution topographic data.
Moritz Altmann, Madlene Pfeiffer, Florian Haas, Jakob Rom, Fabian Fleischer, Tobias Heckmann, Livia Piermattei, Michael Wimmer, Lukas Braun, Manuel Stark, Sarah Betz-Nutz, and Michael Becht
Earth Surf. Dynam., 12, 399–431, https://doi.org/10.5194/esurf-12-399-2024, https://doi.org/10.5194/esurf-12-399-2024, 2024
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We show a long-term erosion monitoring of several sections on Little Ice Age lateral moraines with derived sediment yield from historical and current digital elevation modelling (DEM)-based differences. The first study period shows a clearly higher range of variability of sediment yield within the sites than the later periods. In most cases, a decreasing trend of geomorphic activity was observed.
Paul A. Carling
Earth Surf. Dynam., 12, 381–397, https://doi.org/10.5194/esurf-12-381-2024, https://doi.org/10.5194/esurf-12-381-2024, 2024
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Edge rounding in Shap granite glacial erratics is an irregular function of distance from the source outcrop in northern England, UK. Block shape is conservative, evolving according to block fracture mechanics – stochastic and silver ratio models – towards either of two attractor states. Progressive reduction in size occurs for blocks transported at the sole of the ice mass where the blocks are subject to compressive and tensile forces of the ice acting against a bedrock or till surface.
Gary Parker, Chenge An, Michael P. Lamb, Marcelo H. Garcia, Elizabeth H. Dingle, and Jeremy G. Venditti
Earth Surf. Dynam., 12, 367–380, https://doi.org/10.5194/esurf-12-367-2024, https://doi.org/10.5194/esurf-12-367-2024, 2024
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River morphology has traditionally been divided by the size 2 mm. We use dimensionless arguments to show that particles in the 1–5 mm range (i) are the finest range not easily suspended by alluvial flood flows, (ii) are transported preferentially over coarser gravel, and (iii), within limits, are also transported preferentially over sand. We show how fluid viscosity mediates the special status of sediment in this range.
Lindsay Marie Capito, Enrico Pandrin, Walter Bertoldi, Nicola Surian, and Simone Bizzi
Earth Surf. Dynam., 12, 321–345, https://doi.org/10.5194/esurf-12-321-2024, https://doi.org/10.5194/esurf-12-321-2024, 2024
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We propose that the pattern of erosion and deposition from repeat topographic surveys can be a proxy for path length in gravel-bed rivers. With laboratory and field data, we applied tools from signal processing to quantify this periodicity and used these path length estimates to calculate sediment transport using the morphological method. Our results highlight the potential to expand the use of the morphological method using only remotely sensed data as well as its limitations.
Xuxu Wu, Jonathan Malarkey, Roberto Fernández, Jaco H. Baas, Ellen Pollard, and Daniel R. Parsons
Earth Surf. Dynam., 12, 231–247, https://doi.org/10.5194/esurf-12-231-2024, https://doi.org/10.5194/esurf-12-231-2024, 2024
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The seabed changes from flat to rippled in response to the frictional influence of waves and currents. This experimental study has shown that the speed of this change, the size of ripples that result and even whether ripples appear also depend on the amount of sticky mud present. This new classification on the basis of initial mud content should lead to improvements in models of seabed change in present environments by engineers and the interpretation of past environments by geologists.
Andrea D'Alpaos, Davide Tognin, Laura Tommasini, Luigi D'Alpaos, Andrea Rinaldo, and Luca Carniello
Earth Surf. Dynam., 12, 181–199, https://doi.org/10.5194/esurf-12-181-2024, https://doi.org/10.5194/esurf-12-181-2024, 2024
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Sediment erosion induced by wind waves is one of the main drivers of the morphological evolution of shallow tidal environments. However, a reliable description of erosion events for the long-term morphodynamic modelling of tidal systems is still lacking. By statistically characterizing sediment erosion dynamics in the Venice Lagoon over the last 4 centuries, we set up a novel framework for a synthetic, yet reliable, description of erosion events in tidal systems.
Davide Tognin, Andrea D'Alpaos, Luigi D'Alpaos, Andrea Rinaldo, and Luca Carniello
Earth Surf. Dynam., 12, 201–218, https://doi.org/10.5194/esurf-12-201-2024, https://doi.org/10.5194/esurf-12-201-2024, 2024
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Reliable quantification of sediment transport processes is necessary to understand the fate of shallow tidal environments. Here we present a framework for the description of suspended sediment dynamics to quantify deposition in the long-term modelling of shallow tidal systems. This characterization, together with that of erosion events, allows one to set up synthetic, yet reliable, models for the long-term evolution of tidal landscapes.
Emma L. S. Graf, Hugh D. Sinclair, Mikaël Attal, Boris Gailleton, Basanta Raj Adhikari, and Bishnu Raj Baral
Earth Surf. Dynam., 12, 135–161, https://doi.org/10.5194/esurf-12-135-2024, https://doi.org/10.5194/esurf-12-135-2024, 2024
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Using satellite images, we show that, unlike other examples of earthquake-affected rivers, the rivers of central Nepal experienced little increase in sedimentation following the 2015 Gorkha earthquake. Instead, a catastrophic flood occurred in 2021 that buried towns and agricultural land under up to 10 m of sediment. We show that intense storms remobilised glacial sediment from high elevations causing much a greater impact than flushing of earthquake-induced landslides.
Mohamad Nasr, Adele Johannot, Thomas Geay, Sebastien Zanker, Jules Le Guern, and Alain Recking
Earth Surf. Dynam., 12, 117–134, https://doi.org/10.5194/esurf-12-117-2024, https://doi.org/10.5194/esurf-12-117-2024, 2024
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Hydrophones are used to monitor sediment transport in the river by listening to the acoustic noise generated by particle impacts on the riverbed. However, this acoustic noise is modified by the river flow and can cause misleading information about sediment transport. This article proposes a model that corrects the measured acoustic signal. Testing the model showed that the corrected signal is better correlated with bedload flux in the river.
Byungho Kang, Rusty A. Feagin, Thomas Huff, and Orencio Durán Vinent
Earth Surf. Dynam., 12, 105–115, https://doi.org/10.5194/esurf-12-105-2024, https://doi.org/10.5194/esurf-12-105-2024, 2024
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We provide a detailed characterization of the frequency, intensity and duration of flooding events at a site along the Texas coast. Our analysis demonstrates the suitability of relatively simple wave run-up models to estimate the frequency and intensity of coastal flooding. Our results validate and expand a probabilistic model of coastal flooding driven by wave run-up that can then be used in coastal risk management in response to sea level rise.
Shunsuke Oya, Fumitoshi Imaizumi, and Shoki Takayama
Earth Surf. Dynam., 12, 67–86, https://doi.org/10.5194/esurf-12-67-2024, https://doi.org/10.5194/esurf-12-67-2024, 2024
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The monitoring of pore water pressure in fully and partly saturated debris flows was performed at Ohya landslide scar, central Japan. The pore water pressure in some partly saturated flows greatly exceeded the hydrostatic pressure. The depth gradient of the pore water pressure in the lower part of the flow was generally higher than the upper part of the flow. We conclude that excess pore water pressure is present in many debris flow surges and is an important mechanism in debris flow behavior.
Gabriele Barile, Marco Redolfi, and Marco Tubino
Earth Surf. Dynam., 12, 87–103, https://doi.org/10.5194/esurf-12-87-2024, https://doi.org/10.5194/esurf-12-87-2024, 2024
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River bifurcations often show the closure of one branch (avulsion), whose causes are still poorly understood. Our model shows that when one branch stops transporting sediments, the other considerably erodes and captures much more flow, resulting in a self-sustaining process. This phenomenon intensifies when increasing the length of the branches, eventually leading to branch closure. This work may help to understand when avulsions occur and thus to design sustainable river restoration projects.
Dieter Rickenmann
Earth Surf. Dynam., 12, 11–34, https://doi.org/10.5194/esurf-12-11-2024, https://doi.org/10.5194/esurf-12-11-2024, 2024
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Field measurements of the bedload flux with a high temporal resolution in a steep mountain stream were used to analyse the transport fluctuations as a function of the flow conditions. The disequilibrium ratio, a proxy for the solid particle concentration in the flow, was found to influence the sediment transport behaviour, and above-average disequilibrium conditions – associated with a larger sediment availability on the streambed – substantially affect subsequent transport conditions.
Byungho Kang, Rusty A. Feagin, Thomas Huff, and Orencio Durán Vinent
Earth Surf. Dynam., 12, 1–10, https://doi.org/10.5194/esurf-12-1-2024, https://doi.org/10.5194/esurf-12-1-2024, 2024
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Coastal flooding can cause significant damage to coastal ecosystems, infrastructure, and communities and is expected to increase in frequency with the acceleration of sea level rise. In order to respond to it, it is crucial to measure and model their frequency and intensity. Here, we show deep-learning techniques can be successfully used to automatically detect flooding events from complex coastal imagery, opening the way to real-time monitoring and data acquisition for model development.
Judith Y. Zomer, Bart Vermeulen, and Antonius J. F. Hoitink
Earth Surf. Dynam., 11, 1283–1298, https://doi.org/10.5194/esurf-11-1283-2023, https://doi.org/10.5194/esurf-11-1283-2023, 2023
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Secondary bedforms that are superimposed on large, primary dunes likely play a large role in fluvial systems. This study demonstrates that they can be omnipresent. Especially during peak flows, they grow large and can have steep slopes, likely affecting flood risk and sediment transport dynamics. Primary dune morphology determines whether they continuously or intermittently migrate. During discharge peaks, the secondary bedforms can become the dominant dune scale.
Brayden Noh, Omar Wani, Kieran B. J. Dunne, and Michael P. Lamb
EGUsphere, https://doi.org/10.5194/egusphere-2023-2190, https://doi.org/10.5194/egusphere-2023-2190, 2023
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In this manuscript, we propose a methodology to generate risk maps that provide the probabilities of erosion due to river migration. This methodology uses concepts from probability theory to learn the parameter values of the river migration model from satellite data while taking into account parameter uncertainty. Our analysis shows that such geomorphic risk estimation is more reliable than models that don't explicitly consider various sources of variability and uncertainty.
Matthew C. Morriss, Benjamin Lehmann, Benjamin Campforts, George Brencher, Brianna Rick, Leif S. Anderson, Alexander L. Handwerger, Irina Overeem, and Jeffrey Moore
Earth Surf. Dynam., 11, 1251–1274, https://doi.org/10.5194/esurf-11-1251-2023, https://doi.org/10.5194/esurf-11-1251-2023, 2023
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In this paper, we investigate the 28 June 2022 collapse of the Chaos Canyon landslide in Rocky Mountain National Park, Colorado, USA. We find that the landslide was moving prior to its collapse and took place at peak spring snowmelt; temperature modeling indicates the potential presence of permafrost. We hypothesize that this landslide could be part of the broader landscape evolution changes to alpine terrain caused by a warming climate, leading to thawing alpine permafrost.
Christopher Tomsett and Julian Leyland
Earth Surf. Dynam., 11, 1223–1249, https://doi.org/10.5194/esurf-11-1223-2023, https://doi.org/10.5194/esurf-11-1223-2023, 2023
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Vegetation influences how rivers change through time, yet the way in which we analyse vegetation is limited. Current methods collect detailed data at the individual plant level or determine dominant vegetation types across larger areas. Herein, we use UAVs to collect detailed vegetation datasets for a 1 km length of river and link vegetation properties to channel evolution occurring within the study site, providing a new method for investigating the influence of vegetation on river systems.
Rabab Yassine, Ludovic Cassan, Hélène Roux, Olivier Frysou, and François Pérès
Earth Surf. Dynam., 11, 1199–1221, https://doi.org/10.5194/esurf-11-1199-2023, https://doi.org/10.5194/esurf-11-1199-2023, 2023
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Predicting river morphology evolution is very complicated, especially for mountain rivers with complex morphologies such as the Lac des Gaves reach in France. A 2D hydromorphological model was developed to reproduce the channel's evolution and provide reliable volumetric predictions while revealing the challenge of choosing adapted sediment transport and friction laws. Our model can provide decision-makers with reliable predictions to design suitable restoration measures for this reach.
Daisuke Harada and Shinji Egashira
Earth Surf. Dynam., 11, 1183–1197, https://doi.org/10.5194/esurf-11-1183-2023, https://doi.org/10.5194/esurf-11-1183-2023, 2023
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This paper proposes a method for describing large-wood behavior in terms of the convection equation and the storage equation, which are associated with active sediment erosion and deposition. Compared to the existing Lagrangian method, the proposed method can easily simulate the behavior of large wood in the flow field with active sediment transport. The method is applied to the flood disaster in the Akatani River in 2017, and the 2-D flood flow computations are successfully performed.
Hemanti Sharma and Todd A. Ehlers
Earth Surf. Dynam., 11, 1161–1181, https://doi.org/10.5194/esurf-11-1161-2023, https://doi.org/10.5194/esurf-11-1161-2023, 2023
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Seasonality in precipitation (P) and vegetation (V) influences catchment erosion (E), although which factor plays the dominant role is unclear. In this study, we performed a sensitivity analysis of E to P–V seasonality through numerical modeling. Our results suggest that P variations strongly influence seasonal variations in E, while the effect of seasonal V variations is secondary but significant. This is more pronounced in moderate and least pronounced in extreme environmental settings.
Eduardo Gomez-de la Peña, Giovanni Coco, Colin Whittaker, and Jennifer Montaño
Earth Surf. Dynam., 11, 1145–1160, https://doi.org/10.5194/esurf-11-1145-2023, https://doi.org/10.5194/esurf-11-1145-2023, 2023
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Predicting how shorelines change over time is a major challenge in coastal research. We here have turned to deep learning (DL), a data-driven modelling approach, to predict the movement of shorelines using observations from a camera system in New Zealand. The DL models here implemented succeeded in capturing the variability and distribution of the observed shoreline data. Overall, these findings indicate that DL has the potential to enhance the accuracy of current shoreline change predictions.
Anuska Narayanan, Sagy Cohen, and John Robert Gardner
EGUsphere, https://doi.org/10.5194/egusphere-2023-2271, https://doi.org/10.5194/egusphere-2023-2271, 2023
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This study investigates Amazon deforestation's profound impact on sediment dynamics. Novel remote sensing data and statistical analyses reveal significant changes, especially in heavily deforested regions, with rapid effects within a year. In less disturbed areas, a 1- to 2-year lag occurs, influenced by natural sediment shifts and human activities. These findings highlight the need to understand human activities' consequences for our planet's future.
Christoph Rettinger, Mina Tabesh, Ulrich Rüde, Stefan Vollmer, and Roy M. Frings
Earth Surf. Dynam., 11, 1097–1115, https://doi.org/10.5194/esurf-11-1097-2023, https://doi.org/10.5194/esurf-11-1097-2023, 2023
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Packing models promise efficient and accurate porosity predictions of fluvial sediment deposits. In this study, three packing models were reviewed, calibrated, and validated. Only two of the models were able to handle the continuous and large grain size distributions typically encountered in rivers. We showed that an extension by a cohesion model is necessary and developed guidelines for successful predictions in different rivers.
Alexander A. Ermilov, Gergely Benkő, and Sándor Baranya
Earth Surf. Dynam., 11, 1061–1095, https://doi.org/10.5194/esurf-11-1061-2023, https://doi.org/10.5194/esurf-11-1061-2023, 2023
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A novel, artificial-intelligence-based riverbed sediment analysis methodology is introduced that uses underwater images to identify the characteristic sediment classes. The main novelties of the procedure are as follows: underwater images are used, the method enables continuous mapping of the riverbed along the measurement vessel’s route contrary to conventional techniques, the method is cost-efficient, and the method works without scaling.
Kelly M. Sanks, John B. Shaw, Samuel M. Zapp, José Silvestre, Ripul Dutt, and Kyle M. Straub
Earth Surf. Dynam., 11, 1035–1060, https://doi.org/10.5194/esurf-11-1035-2023, https://doi.org/10.5194/esurf-11-1035-2023, 2023
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River deltas encompass many depositional environments (like channels and wetlands) that interact to produce coastal environments that change through time. The processes leading to sedimentation in wetlands are often neglected from physical delta models. We show that wetland sedimentation constrains flow to the channels, changes sedimentation rates, and produces channels more akin to field-scale deltas. These results have implications for the management of these vulnerable coastal landscapes.
Katharina Wetterauer and Dirk Scherler
Earth Surf. Dynam., 11, 1013–1033, https://doi.org/10.5194/esurf-11-1013-2023, https://doi.org/10.5194/esurf-11-1013-2023, 2023
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In glacial landscapes, debris supply rates vary spatially and temporally. Rockwall erosion rates derived from cosmogenic 10Be concentrations in medial moraine debris at five Swiss glaciers around Pigne d'Arolla indicate an increase in erosion from the end of the Little Ice Age towards deglaciation but temporally more stable rates over the last ∼100 years. Rockwall erosion rates are higher where rockwalls are steep and north-facing, suggesting a potential slope and temperature control.
Jacob Hardt, Tim Dooley, and Michael Hudec
EGUsphere, https://doi.org/10.5194/egusphere-2023-2104, https://doi.org/10.5194/egusphere-2023-2104, 2023
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Subsurface salt structures may play an important role in the energy transition, e.g., as energy storage. Thus, it is important to understand all processes that affect their stability. We investigate into the reaction of salt structures on ice sheet transgressions. We used series of sandbox models that enabled us to experiment with scaled-down versions of salt bodies from northern Germany. The strongest reactions occurred when large salt pillows were partly covered by the ice load.
Sam Anderson, Nicole Gasparini, and Joel Johnson
Earth Surf. Dynam., 11, 995–1011, https://doi.org/10.5194/esurf-11-995-2023, https://doi.org/10.5194/esurf-11-995-2023, 2023
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We measured rock strength and amount of fracturing in the two different rock types, sandstones and carbonates, in Last Chance Canyon, New Mexico, USA. Where there is more carbonate bedrock, hills and channels steepen in Last Chance Canyon. This is because the carbonate-type bedrock tends to be more thickly bedded, is less fractured, and is stronger. The carbonate bedrock produces larger boulders than the sandstone bedrock, which can protect the more fractured sandstone bedrock from erosion.
Jens M. Turowski, Gunnar Pruß, Anne Voigtländer, Andreas Ludwig, Angela Landgraf, Florian Kober, and Audrey Bonnelye
Earth Surf. Dynam., 11, 979–994, https://doi.org/10.5194/esurf-11-979-2023, https://doi.org/10.5194/esurf-11-979-2023, 2023
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Rivers can cut into rocks, and their strength modulates the river's erosion rates. Yet, which properties of the rock control its response to erosive action is poorly understood. Here, we describe parallel experiments to measure rock erosion rates under fluvial impact erosion and the rock's geotechnical properties such as fracture strength, elasticity, and density. Erosion rates vary over a factor of a million between different rock types. We use the data to improve current theory.
Koji Ohata, Hajime Naruse, and Norihiro Izumi
Earth Surf. Dynam., 11, 961–977, https://doi.org/10.5194/esurf-11-961-2023, https://doi.org/10.5194/esurf-11-961-2023, 2023
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We investigated the influence of sediment transport modes on the formation of bedforms using theoretical analysis. The results of the theoretical analysis were verified with published data of plane beds obtained by fieldwork and laboratory experiments. We found that suspended sand particles can promote the formation of plane beds on a fine-grained bed, which suggests that the presence of suspended particles suppresses the development of dunes under submarine sediment-laden gravity currents.
Eric Petersen, Regine Hock, and Michael G. Loso
EGUsphere, https://doi.org/10.5194/egusphere-2023-1913, https://doi.org/10.5194/egusphere-2023-1913, 2023
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Ice cliffs are melt hot spots that increase melt rates on debris-covered glaciers which otherwise see a reduction in melt rates. In this study, we show how surface runoff streams contribute to the generation, evolution, and survival of ice cliffs by carving into the glacier and transporting rocky debris. On Kennicott Glacier, Alaska, 31.4 % of streams are actively influenced by streams, while nearly half are within 10 m of streams.
Matan Ben-Asher, Florence Magnin, Sebastian Westermann, Josué Bock, Emmanuel Malet, Johan Berthet, Ludovic Ravanel, and Philip Deline
Earth Surf. Dynam., 11, 899–915, https://doi.org/10.5194/esurf-11-899-2023, https://doi.org/10.5194/esurf-11-899-2023, 2023
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Quantitative knowledge of water availability on high mountain rock slopes is very limited. We use a numerical model and field measurements to estimate the water balance at a steep rock wall site. We show that snowmelt is the main source of water at elevations >3600 m and that snowpack hydrology and sublimation are key factors. The new information presented here can be used to improve the understanding of thermal, hydrogeological, and mechanical processes on steep mountain rock slopes.
Jessica Droujko, Srividya Hariharan Sudha, Gabriel Singer, and Peter Molnar
Earth Surf. Dynam., 11, 881–897, https://doi.org/10.5194/esurf-11-881-2023, https://doi.org/10.5194/esurf-11-881-2023, 2023
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We combined data from satellite images with data measured from a kayak in order to understand the propagation of fine sediment in the Vjosa River. We were able to find some storm-activated and some permanent sources of sediment. We also estimated how much fine sediment is carried into the Adriatic Sea by the Vjosa River: approximately 2.5 Mt per year, which matches previous findings. With our work, we hope to show the potential of open-access satellite images.
Kate C. P. Leary, Leah Tevis, and Mark Schmeeckle
Earth Surf. Dynam., 11, 835–847, https://doi.org/10.5194/esurf-11-835-2023, https://doi.org/10.5194/esurf-11-835-2023, 2023
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Despite the importance of bedforms (e.g., ripples, dunes) to sediment transport, the details of sediment transport on a sub-bedform scale are poorly understood. This paper investigates sediment transport in the downstream and cross-stream directions over bedforms with straight crests. We find that the patterns of bedload transport are highly variable on the sub-bedform scale, which is important for our understanding of the evolution of bedforms with complex crest geometries.
Daniel O'Hara, Liran Goren, Roos M. J. van Wees, Benjamin Campforts, Pablo Grosse, Pierre Lahitte, Gabor Kereszturi, and Matthieu Kervyn
EGUsphere, https://doi.org/10.5194/egusphere-2023-1921, https://doi.org/10.5194/egusphere-2023-1921, 2023
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Understanding how volcanic edifices develop drainage basins remains an unexplored aspect of landscape evolution. Using Digital Evolution Models of volcanoes with varying ages, we quantify the geometries of their edifices and associated drainage basins through time. We find that these metrics correlate with edifice age, and are thus useful indicators of a volcano’s history. We then develop a generalized model for volcano basin develop and compare our results to basin evolution in other settings.
Paul A. Carling, John D. Jansen, Teng Su, Jane Lund Andersen, and Mads Faurschou Knudsen
Earth Surf. Dynam., 11, 817–833, https://doi.org/10.5194/esurf-11-817-2023, https://doi.org/10.5194/esurf-11-817-2023, 2023
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Many steep glaciated rock walls collapsed when the Ice Age ended. How ice supports a steep rock wall until the ice decays is poorly understood. A collapsed rock wall was surveyed in the field and numerically modelled. Cosmogenic exposure dates show it collapsed and became ice-free ca. 18 ka ago. The model showed that the rock wall failed very slowly because ice was buttressing the slope. Dating other collapsed rock walls can improve understanding of how and when the last Ice Age ended.
Paul A. Jarvis, Clement Narteau, Olivier Rozier, and Nathalie M. Vriend
Earth Surf. Dynam., 11, 803–815, https://doi.org/10.5194/esurf-11-803-2023, https://doi.org/10.5194/esurf-11-803-2023, 2023
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Sand dune migration velocity is inversely proportional to dune size. Consequently, smaller, faster dunes can collide with larger, slower downstream dunes. Such collisions can result in either coalescence or ejection, whereby the dunes exchange mass but remain separate. Our numerical simulations show that the outcome depends probabilistically on the dune size ratio, which we describe through an empirical function. Our numerical predictions compare favourably against experimental observations.
Adrian Ringenbach, Peter Bebi, Perry Bartelt, Andreas Rigling, Marc Christen, Yves Bühler, Andreas Stoffel, and Andrin Caviezel
Earth Surf. Dynam., 11, 779–801, https://doi.org/10.5194/esurf-11-779-2023, https://doi.org/10.5194/esurf-11-779-2023, 2023
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Swiss researchers carried out repeated rockfall experiments with rocks up to human sizes in a steep mountain forest. This study focuses mainly on the effects of the rock shape and lying deadwood. In forested areas, cubic-shaped rocks showed a longer mean runout distance than platy-shaped rocks. Deadwood especially reduced the runouts of these cubic rocks. The findings enrich standard practices in modern rockfall hazard zoning assessments and strongly urge the incorporation of rock shape effects.
Colin K. Bloom, Corinne Singeisen, Timothy Stahl, Andrew Howell, and Chris Massey
Earth Surf. Dynam., 11, 757–778, https://doi.org/10.5194/esurf-11-757-2023, https://doi.org/10.5194/esurf-11-757-2023, 2023
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Earthquakes can cause damaging coastal cliff retreat, but we have a limited understanding of how these infrequent events influence multidecadal retreat. This makes hazard planning a challenge. In this study, we use historic aerial images to measure coastal cliff-top retreat at a site in New Zealand. We find that earthquakes account for close to half of multidecadal retreat at this site, and our results have helped us to develop tools for estimating the influence of earthquakes at other sites.
Rishitosh K. Sinha, Dwijesh Ray, Tjalling De Haas, Susan J. Conway, and Axel Noblet
Earth Surf. Dynam., 11, 713–730, https://doi.org/10.5194/esurf-11-713-2023, https://doi.org/10.5194/esurf-11-713-2023, 2023
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Our detailed investigation of Martian gullies formed in different substrates in 29 craters distributed between 30°–75° S latitude suggests that they can be differentiated from one another in terms of (1) morphology and length of alcoves and (2) mean gradient of the gully fans. The comparison between the Melton ratio, alcove length, and fan gradient of Martian and terrestrial gullies suggests that Martian gullies were likely formed by terrestrial debris-flow-like processes in the past.
Christopher J. Skinner and Thomas J. Coulthard
Earth Surf. Dynam., 11, 695–711, https://doi.org/10.5194/esurf-11-695-2023, https://doi.org/10.5194/esurf-11-695-2023, 2023
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Landscape evolution models allow us to simulate the way the Earth's surface is shaped and help us to understand relevant processes, in turn helping us to manage landscapes better. The models typically represent the land surface using a grid of square cells of equal size, averaging heights in those squares. This study shows that the size chosen by the modeller for these grid cells is important, with larger sizes making sediment output events larger but less frequent.
Hossein Hosseiny, Claire C. Masteller, Jedidiah E. Dale, and Colin B. Phillips
Earth Surf. Dynam., 11, 681–693, https://doi.org/10.5194/esurf-11-681-2023, https://doi.org/10.5194/esurf-11-681-2023, 2023
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It is of great importance to engineers and geomorphologists to predict the rate of bed load in rivers. In this contribution, we used a large dataset of measured data and developed an artificial neural network (ANN), a machine learning algorithm, for bed load prediction. The ANN model predicted the bed load flux close to measured values and better than the ones obtained from four standard bed load models with varying degrees of complexity.
Ian Delaney, Leif Anderson, and Frédéric Herman
Earth Surf. Dynam., 11, 663–680, https://doi.org/10.5194/esurf-11-663-2023, https://doi.org/10.5194/esurf-11-663-2023, 2023
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This paper presents a two-dimensional subglacial sediment transport model that evolves a sediment layer in response to subglacial sediment transport conditions. The model captures sediment transport in supply- and transport-limited regimes across a glacier's bed and considers both the creation and transport of sediment. Model outputs show how the spatial distribution of sediment and water below a glacier can impact the glacier's discharge of sediment and erosion of bedrock.
Sam Y. J. Huang, Steven Y. J. Lai, Ajay B. Limaye, Brady Z. Foreman, and Chris Paola
Earth Surf. Dynam., 11, 615–632, https://doi.org/10.5194/esurf-11-615-2023, https://doi.org/10.5194/esurf-11-615-2023, 2023
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We use experiments and a model to study the effects of confinement width and the inflow-to-sediment discharge ratio on the evolution of submarine braided channels. We find that confinement width controls most of the morphological changes. These trends are consistent for submarine braided channels both with and without confinement width effects and similar to fluvial braided rivers. Furthermore, we built a model that can simulate the flow bifurcation and confluence of submarine braided channels.
Gregory Ruetenik, Ken Ferrier, and Odin Marc
EGUsphere, https://doi.org/10.5194/egusphere-2023-1278, https://doi.org/10.5194/egusphere-2023-1278, 2023
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Fluvial sediment fluxes increased dramatically in Taiwan during Typhoon Morakot in 2009, which produced some of the heaviest landsliding on record. We analyzed fluvial discharge and suspended sediment concentration data at 87 gauging stations across Taiwan to quantify fluvial sediment responses since Morakot. In basins heavily impacted by landsliding, rating curve coefficients sharply increased during Morakot and then declined exponentially with a characteristic decay time of <10 years.
Cited articles
Abrahami, R., van der Beek, P., Huyghe, P., Hardwick, E., and Carcaillet, J.:
Decoupling of long-term exhumation and short-term erosion rates in the
Sikkim Himalaya, Earth Planet. Sc. Lett., 433, 76–88,
https://doi.org/10.1016/j.epsl.2015.10.039, 2016.
Ali, K. F. and De Boer, D. H.: Spatial patterns and variation of sus-pended
sediment yield in the upper Indus River basin, northern Pakistan, J. Hydrol.,
334, 368–387, 2007.
Andermann, C., Crave, A., Gloaguen, R., Davy, P., and Bonnet, S.: Connecting
source and transport: Suspended sediments in the Nepal Himalayas, Earth Planet. Sc. Lett., 351–352, 158–170, https://doi.org/10.1016/j.epsl.2012.06.059, 2012.
Avouac, J.-P.: From Geodetic Imaging of Seismic and Aseismic Fault Slip to
Dynamic Modeling of the Seismic Cycle, Annu. Rev. Earth Pl. Sc., 43, 233–271, https://doi.org/10.1146/annurev-earth-060614-105302, 2015.
Avouac, J.-P., Meng, L., Wei, S., Wang, T., and Ampuero, J.-P.: Lower edge of
locked Main Himalayan Thrust unzipped by the 2015 Gorkha earthquake, Nat.
Geosci., 8, p. 708, https://doi.org/10.1038/ngeo2518, 2015.
Behling, R., Roessner, S., Kaufmann, H., and Kleinschmit, B.: Automated
Spatiotemporal Landslide Mapping over Large Areas Using RapidEye Time Series
Data, Remote Sens., 6, 8026–8055, https://doi.org/10.3390/rs6098026,
2014.
Behling, R., Roessner, S., Golovko, D., and Kleinschmit, B.: Derivation of
long-term spatiotemporal landslide activity – A multi-sensor time series
approach, Remote Sens. Environ., 186, 88–104, https://doi.org/10.1016/j.rse.2016.07.017, 2016.
Blodgett, T. A. and Isacks, B. L.: Landslide Erosion Rate in the Eastern
Cordillera of Northern Bolivia, Earth Interact., 11, 1–30,
https://doi.org/10.1175/2007EI222.1, 2007.
Blöthe, J. H. and Korup, O.: Millennial lag times in the Himalayan
sediment routing system, Earth Planet. Sc. Lett., 382, 38–46,
https://doi.org/10.1016/j.epsl.2013.08.044, 2013.
Bollinger, L., Sapkota, S. N., Tapponnier, P., Klinger, Y., Rizza, M., Van
der Woerd, J., Tiwari, D. R., Pandey, R., Bitri, A., and Bes de Berc, S.:
Estimating the return times of great Himalayan earthquakes in eastern Nepal:
Evidence from the Patu and Bardibas strands of the Main Frontal Thrust, J.
Geophys. Res.-Sol. Ea., 119, 7123–7163, https://doi.org/10.1002/2014JB010970, 2014.
Bollinger, L., Tapponnier, P., Sapkota, S. N., and Klinger, Y.: Slip deficit
in central Nepal: omen for a repeat of the 1344 AD earthquake?, Earth Planets
Space, 68, p. 12, https://doi.org/10.1186/s40623-016-0389-1, 2016.
Burbank, D. W., Leland, J., Fielding, E., Anderson, R. S., Brozovic, N.,
Reid, M. R., and Duncan, C.: Bedrock incision, rock uplift and threshold
hillslopes in the northwestern Himalayas, Nature, 379, 505–510,
https://doi.org/10.1038/379505a0, 1996.
Burbank, D. W., Blythe, A. E., Putkonen, J., Pratt-Sitaula, B., Gabet, E.,
Oskin, M., Barros, A., and Ojha, T. P.: Decoupling of erosion and
precipitation in the Himalayas, Nature, 426, 652–655, https://doi.org/10.1038/nature02187, 2003.
Burtin, A., Hovius, N., Milodowski, D. T., Chen, Y.-G., Wu, Y.-M., Lin,
C.-W., Chen, H., Emberson, R., and Leu, P.-L.: Continuous catchment-scale
monitoring of geomorphic processes with a 2-D seismological array, J. Geophys. Res.-Earth, 118, 1956–1974, https://doi.org/10.1002/jgrf.20137, 2013.
Causse, M. and Song, S. G.: Are stress drop and rupture velocity of
earthquakes independent? Insight from observed ground motion variability,
Geophys. Res. Lett., 42, 7383–7389, https://doi.org/10.1002/2015GL064793, 2015.
Cenderelli, D. A. and Wohl, E. E.: Sedimentology and Clast Orientation of
Deposits, produced by Glacial-Lake Outburst Floods in the Mount Everest
Region, Nepal, in: Geomorphological Hazards in High Mountain Areas, edited
by: Kalvoda, J. and Rosenfeld, C. L., 1–26, Springer Netherlands, Dordrecht,
1998.
Chakraborty, I., Ghosh, D. S., Bhattacharya, D., and Bora, A.: Earthquake
induced landslides in the Sikkim-Darjeeling Himalayas – An aftermath of the
18 September 2011 Sikkim earthquake, Report of Geological Survey of India,
Kolkata, 2011.
Chen, Y.-C., Chang, K., Chiu, Y.-J., Lau, S.-M., and Lee, H.-Y.: Quantifying
rainfall controls on catchment-scale landslide erosion in Taiwan, Earth Surf. Proc. Land., 38, 372–382, https://doi.org/10.1002/esp.3284, 2013.
Clauset, A., Shalizi, C., and Newman, M.: Power-Law Distributions in Empirical
Data, SIAM Rev., 51, 661–703, https://doi.org/10.1137/070710111, 2009.
Cook, K. L., Andermann, C., Gimbert, F., Adhikari, B. R., and Hovius, N.:
Glacial lake outburst floods as drivers of fluvial erosion in the Himalaya,
Science, 362, 53–57, https://doi.org/10.1126/science.aat4981, 2018.
Croissant, T., Lague, D., Steer, P., and Davy, P.: Rapid post-seismic
landslide evacuation boosted by dynamic river width, Nat. Geosci., 10, 680,
https://doi.org/10.1038/ngeo3005, 2017.
Dahal, R. K. and Hasegawa, S.: Representative rainfall thresholds for
landslides in the Nepal Himalaya, Geomorphology, 100, 429–443,
https://doi.org/10.1016/j.geomorph.2008.01.014, 2008.
Dingle, E. H., Sinclair, H. D., Attal, M., Rodés, Á., and Singh, V.:
Temporal variability in detrital 10Be concentrations in a large
Himalayan catchment, Earth Surf. Dynam., 6, 611–635,
https://doi.org/10.5194/esurf-6-611-2018, 2018.
Domej, G., Bourdeau, C., and Lenti, L.: Mean Landslide Geometries Inferred
from a Global Database of Earthquake- and Non-Earthquake-Triggered
Landslides, Italian Journal of Engineering Geology and Environment, 17,
87–107, https://doi.org/10.4408/IJEGE.2017-02.O-05, 2017.
Fort, M.: Two large late Quaternary rock slope failures and their geomorphic
significance, Annapurna Himalayas (Nepal), Geogr. Fis. Din. Quat., 34, 5–14, 2011.
Fox, M., Herman, F., Willett, S. D., and Schmid, S. M.: The Exhumation history
of the European Alps inferred from linear inversion of thermochronometric
data, Am. J. Sci., 316, 505–541, https://doi.org/10.2475/06.2016.01, 2016.
Frattini, P. and Crosta, G. B.: The role of material properties and landscape
morphology on landslide size distributions, Earth Planet. Sc. Lett., 361,
310–319, 2013
Gabet, E. J., Burbank, D. W., Putkonen, J. K., Pratt-Sitaula, B. A., and Ojha,
T.: Rainfall thresholds for landsliding in the Himalayas of Nepal,
Geomorphology, 63, 131–143, https://doi.org/10.1016/j.geomorph.2004.03.011, 2004.
Gabet, E. J., Burbank, D. W., Pratt-Sitaula, B., Putkonen, J., and Bookhagen,
B.: Modern erosion rates in the High Himalayas of Nepal, Earth Planet. Sc. Lett., 267, 482–494, https://doi.org/10.1016/j.epsl.2007.11.059, 2008.
Gallo, F. and Lavé, J.: Evolution of a large landslide in the High
Himalaya of central Nepal during the last half-century, Geomorphology, 223,
20–32, https://doi.org/10.1016/j.geomorph.2014.06.021, 2014.
Godard, V., Burbank, D. W., Bourlès, D. L., Bookhagen, B., Braucher, R.,
and Fisher, G. B.: Impact of glacial erosion on 10Be concentrations
in fluvial sediments of the Marsyandi catchment, central Nepal, J. Geophys.
Res.-Earth, 117, https://doi.org/10.1029/2011JF002230, 2012.
Godard, V., Bourlès, D. L., Spinabella, F., Burbank, D. W., Bookhagen,
B., Fisher, G. B., Moulin, A., and Léanni, L.: Dominance of tectonics over
climate in Himalayan denudation, Geology, 42, 243–246, https://doi.org/10.1130/G35342.1, 2014.
Heimsath, A. M. and McGlynn, R.: Quantifying periglacial erosion in the Nepal
high Himalaya, Geomorphology, 97, 5–23,
https://doi.org/10.1016/j.geomorph.2007.02.046, 2008.
Herman, F., Copeland, P., Avouac, J.-P., Bollinger, L., Mahéo, G., Le
Fort, P., Rai, S., Foster, D., Pêcher, A., Stüwe, K., and Henry, P.:
Exhumation, crustal deformation, and thermal structure of the Nepal Himalaya
derived from the inversion of thermochronological and thermobarometric data
and modeling of the topography, J. Geophys. Res., 115,
https://doi.org/10.1029/2008JB006126, 2010.
Hovius, N., Stark, C. P., and Allen, P. A.: Sediment flux from a mountain belt
derived by landslide mapping, Geology, 25, 231–234, https://doi.org/10.1130/0091-7613(1997)025<0231:SFFAMB>2.3.CO;2,
1997.
Hovius, N., Stark, C. P., Chu H.-T., and Lin J.-C.: Supply and Removal of
Sediment in a Landslide-Dominated Mountain Belt: Central Range, Taiwan, J.
Geol., 108, 73–89, https://doi.org/10.1086/jg.2000.108.issue-1, 2000.
Iverson, R. M.: Landslide triggering by rain infiltration, Water Resour.
Res., 36, 1897–1910, https://doi.org/10.1029/2000WR900090, 2000.
Keefer, D. K.: Landslides caused by earthquakes, Geol. Soc. Am. Bull., 95,
397–405, 1984.
Kirchner, J. W., Finkel, R. C., Riebe, C. S., Granger, D. E., Clayton, J. L., King, J. G., and Megahan, W. F.:
Mountain erosion over 10 yr, 10 ky, and 10 my time scales, Geology, 29,
591–594, 2001.
Korup, O., Clague, J. J., Hermanns, R. L., Hewitt, K., Strom, A. L., and
Weidinger, J. T.: Giant landslides, topography, and erosion, Earth Planet. Sc. Lett., 261, 578–589, https://doi.org/10.1016/j.epsl.2007.07.025, 2007.
Kubota, T., Shige, S., Hashizume, H., Ushio, T., Aonashi, K., Kachi, M., and
Okamoto, K.: Global Precipitation Map using Satelliteborne Microwave
Radiometers by the GSMaP Project?: Production and Validation, in 2006 IEEE
MicroRad, 290–295, 2006.
Lacroix, P. and Amitrano, D.: Long-term dynamics of rockslides and damage
propagation inferred from mechanical modeling: Long-term dynamics of
rockslides, J. Geophys. Res.-Earth, 118,
2292–2307, https://doi.org/10.1002/2013JF002766, 2013.
Landry, K. R., Coutand, I., Whipp, D. M., Grujic, D., and Hourigan, J. K.:
Late Neogene tectonically driven crustal exhumation of the Sikkim Himalaya:
Insights from inversion of multithermochronologic data, Tectonics, 35, 831–857, https://doi.org/10.1002/2015TC004102, 2016.
Larsen, I. J., Montgomery, D. R., and Korup, O.: Landslide erosion controlled
by hillslope material, Nat. Geosci., 3, 247–251, 2010.
Lave, J., Lénard, S., and Lanord, C. F.: Giant landslide deposits and the
modalities of their removal by ?uvial sediment export in the central
Himalayas, vol. 19, EGU2017-13537, Vienna, 2017.
Li, Gen and West, A Joshua and Densmore, Alexander L and Jin, Zhangdong and Zhang, Fei and Wang, Jin and Clark, Marin and Hilton, Robert
G.: Earthquakes drive focused denudation along a tectonically active mountain
front, Earth Planet. Sc. Lett., 472, 253–265, 2017.
Lupker, M., Blard, P.-H., Lavé, J., France-Lanord, C., Leanni, L., Puchol,
N., Charreau, J., and Bourlès, D.: 10Be-derived Himalayan
denudation rates and sediment budgets in the Ganga basin, Earth Planet. Sc.
Lett., 333–334, 146–156, https://doi.org/10.1016/j.epsl.2012.04.020, 2012.
Malamud, B. D., Turcotte, D. L., Guzzetti, F., and Reichenbach, P.: Landslide
inventories and their statistical properties, Earth Surf. Proc. Land.,
29, 687–711, https://doi.org/10.1002/esp.1064, 2004.
Marc, O. and Hovius, N.: Amalgamation in landslide maps: effects and
automatic detection, Nat. Hazards Earth Syst. Sci., 15, 723–733,
https://doi.org/10.5194/nhess-15-723-2015, 2015.
Marc, O., Hovius, N., Meunier, P., Uchida, T., and Hayashi, S.: Transient
changes of landslide rates after earthquakes, Geology, 43, 883–886,
https://doi.org/10.1130/G36961.1, 2015.
Marc, O., Hovius, N., Meunier, P., Gorum, T., and Uchida, T.: A
seismologically consistent expression for the total area and volume of
earthquake-triggered landsliding, J. Geophys. Res.-Earth, 121, 640–663,
https://doi.org/10.1002/2015JF003732, 2016a.
Marc, O., Hovius, N., and Meunier, P.: The mass balance of earthquakes and
earthquake sequences, Geophys. Res. Lett., 43, 3708–3716,
https://doi.org/10.1002/2016GL068333, 2016b.
Marc, O., Meunier, P., and Hovius, N.: Prediction of the area affected by
earthquake-induced landsliding based on seismological parameters, Nat.
Hazards Earth Syst. Sci., 17, 1159–1175,
https://doi.org/10.5194/nhess-17-1159-2017, 2017.
Marc, O., Stumpf, A., Malet, J.-P., Gosset, M., Uchida, T., and Chiang,
S.-H.: Initial insights from a global database of rainfall-induced landslide
inventories: the weak influence of slope and strong influence of total storm
rainfall, Earth Surf. Dynam., 6, 903–922, https://doi.org/10.5194/esurf-6-903-2018,
2018.
Martha, T. R., Roy, P., Mazumdar, R., Govindharaj, K. B., and Kumar, K. V.:
Spatial characteristics of landslides triggered by the 2015
Mw 7.8 (Gorkha) and Mw 7.3 (Dolakha) earthquakes in
Nepal, Landslides, 14, 697–704, https://doi.org/10.1007/s10346-016-0763-x, 2016.
Mathur, L.: Assam Earthquake of 15 August 1950, a short note on factual
observations, in A compilation of papers on the Assam earthquake of August,
15, 1950, vol. 1, 56–60, The Central Board of Geophysical Publisher,
National Geophysical Research Institute, Hyderabad, India, 1953.
Meunier, P., Hovius, N., and Haines, A. J.: Regional patterns of
earthquake-triggered landslides and their relation to ground motion, Geophys.
Res. Lett., 34, L20408, https://doi.org/10.1029/2007GL031337, 2007.
Meunier, P., Uchida, T., and Hovius, N.: Landslide patterns reveal the sources
of large earthquakes, Earth Planet. Sc. Lett., 363, 27–33,
https://doi.org/10.1016/j.epsl.2012.12.018, 2013.
Milledge, David G. and Bellugi, Dino and McKean, Jim A. and Densmore, Alexander L. and Dietrich, William
E.: A multidimensional stability model for predicting shallow landslide size and shape across
landscapes, J. Geophys. Res.-Earth, 119,
2481–2504, https://doi.org/10.1002/2014JF003135, 2014.
Morin, G., Lavé, J., France-Lanord, C., Rigaudier, T., Gajurel, A. P.,
and Sinha, R.: Annual sediment transport dynamics in the Narayani basin,
Central Nepal: assessing the impacts of erosion processes in the annual
sediment budget, J. Geophys. Res.-Earth, 123, 2341–2376,
https://doi.org/10.1029/2017JF004460, 2018.
Mugnier, J.-L., Gajurel, A., Huyghe, P., Jayangondaperumal, R., Jouanne, F.,
and Upreti, B.: Structural interpretation of the great earthquakes of the
last millennium in the central Himalaya, Earth-Sci. Rev., 127, 30–47,
https://doi.org/10.1016/j.earscirev.2013.09.003, 2013.
Niemi, N. A., Oskin, M., Burbank, D. W., Heimsath, A. M., and Gabet, E. J.:
Effects of bedrock landslides on cosmogenically determined erosion rates,
Earth Planet. Sc. Lett., 237, 480–498, https://doi.org/10.1016/j.epsl.2005.07.009, 2005.
Portenga, E. W., Bierman, P. R., Duncan, C., Corbett, L. B., Kehrwald, N. M.,
and Rood, D. H.: Erosion rates of the Bhutanese Himalaya determined using in
situ-produced 10Be, Geomorphology, 233, 112–126,
https://doi.org/10.1016/j.geomorph.2014.09.027, 2015.
Pratt, B., Burbank, D. W., Heimsath, A., and Ojha, T.: Impulsive alluviation
during early Holocene strengthened monsoons, central Nepal Himalaya, Geology,
30, 911–914,
https://doi.org/10.1130/0091-7613(2002)030<0911:IADEHS>2.0.CO;2,
2002.
Pratt-Sitaula, B., Burbank, D. W., Heimsath, A., and Ojha, T.: Landscape
disequilibrium on 1000–10 000 year scales Marsyandi River, Nepal, central
Himalaya, Geomorphology, 58, 223–241, https://doi.org/10.1016/j.geomorph.2003.07.002,
2004.
Pratt-Sitaula, B., Garde, M., Burbank, D. W., Oskin, M., Heimsath, A., and Gabet, E.:
Bedload-to-suspended load ratio and rapid bedrock incision from Himalayan landslide-dam lake record, Quaternary Res., 68, 111–120,
https://doi.org/10.1016/j.yqres.2007.03.005, 2007.
Rao, S. V. N., Rao, M. V., and Ramasasitri, K. S.: A Study of Sedimentation
in Chenab Basin in Western Himalayas, Nord. Hydrol., 28, 201–216, 1997.
RGI Consortium: Randolph glacier inventory (RGI) – a dataset of global
glacier outlines: version 6.0, Global Land Ice Measurements from Space,
Boulder, https://doi.org/10.7265/N5-RGI-60, 2017.
Riva, F., Agliardi, F., Amitrano, D., and Crosta, G. B.: Damage-Based
Time-Dependent Modeling of Paraglacial to Postglacial Progressive Failure of
Large Rock Slopes, J. Geophys. Res.-Earth, 123, 124–141,
https://doi.org/10.1002/2017JF004423, 2018.
Roback, K., Clark, M. K., West, A. J., Zekkos, D., Li, G., Gallen, S. F.,
Chamlagain, D., and Godt, J. W.: The size, distribution, and mobility of
landslides caused by the 2015 Mw 7.8 Gorkha earthquake, Nepal,
Geomorphology, 301, 121–138, https://doi.org/10.1016/j.geomorph.2017.01.030, 2018.
Ruhl, K. W. and Hodges, K. V.: The use of detrital mineral cooling ages to
evaluate steady state assumptions in active orogens: An example from the
central Nepalese Himalaya, Tectonics, 24, https://doi.org/10.1029/2004TC001712, 2005.
Saito, H., Korup, O., Uchida, T., Hayashi, S., and Oguchi, T.: Rainfall
conditions, typhoon frequency, and contemporary landslide erosion in Japan,
Geology, 42, 999–1002, https://doi.org/10.1130/G35680.1, 2014.
Sato, H. P., Hasegawa, H., Fujiwara, S., Tobita, M., Koarai, M., Une, H., and
Iwahashi, J.: Interpretation of landslide distribution triggered by the 2005
Northern Pakistan earthquake using SPOT 5 imagery, Landslides, 4, 113–122,
https://doi.org/10.1007/s10346-006-0069-5, 2007.
Scherler, D., Bookhagen, B., and Strecker, M. R.: Tectonic control on
10Be-derived erosion rates in the Garhwal Himalaya, India, J.
Geophys. Res.-Earth, 119, 83–105, https://doi.org/10.1002/2013JF002955, 2014.
Schildgen, T. F., Beek, P. A., van der, Sinclair, H. D., and Thiede, R. C.:
Spatial correlation bias in late-Cenozoic erosion histories derived from
thermochronology, Nature, 559, 89–93, https://doi.org/10.1038/s41586-018-0260-6, 2018.
Schwanghart, W., Bernhardt, A., Stolle, A., Hoelzmann, P., Adhikari, B. R.,
Andermann, C., Tofelde, S., Merchel, S., Rugel, G., Fort, M., and Korup, O.:
Repeated catastrophic valley infill following medieval earthquakes in the
Nepal Himalaya, Science, 351, 147–150, https://doi.org/10.1126/science.aac9865, 2016.
Stark, C. P. and Guzzetti, F.: Landslide rupture and the probability
distribution of mobilized debris volumes, J. Geophys. Res., 114, F00A02,
https://doi.org/10.1029/2008JF001008, 2009.
Stark, C. P. and Hovius, N.: The characterization of landslide size
distributions, Geophys. Res. Lett., 28, 1091–1094, https://doi.org/10.1029/2000GL008527,
2001.
Stevens, V. L. and Avouac, J.-P.: Millenary Mw > 9.0
earthquakes required by geodetic strain in the Himalaya, Geophys. Res. Lett.,
43, 1118–1123, https://doi.org/10.1002/2015GL067336, 2016.
Stolle, A., Bernhardt, A., Schwanghart, W., Hoelzmann, P., Adhikari, B. R.,
Fort, M., and Korup, O.: Catastrophic valley fills record large Himalayan
earthquakes, Pokhara, Nepal, Quaternary Sci. Rev., 177, 88–103,
https://doi.org/10.1016/j.quascirev.2017.10.015, 2017.
Stolle, A., Schwanghart, W., Andermann, C., Bernhardt, A., Fort, M., Jansen, J. D.,
Wittmann, H., Merchel, S., Rugel, G., Adhikari, B. R., and Korup, O.: Protracted
river response to medieval earthquakes, Earth Surf. Proc. Land., 44, 331–341,
https://doi.org/10.1002/esp.4517, 2019.
Struck, M., Andermann, C., Hovius, N., Korup, O., Turowski, J. M., Bista, R.,
Pandit, H. P., and Dahal, R. K.: Monsoonal hillslope processes determine
grain size-specific suspended sediment fluxes in a trans-Himalayan river:
Mass wasting determines sediment caliber, Geophys. Res. Lett., 42,
2302–2308, https://doi.org/10.1002/2015GL063360, 2015.
Tanyaş, H., van Westen, C. J., Allstadt, K. E., Anna Nowicki Jessee, M.,
Görüm, T., Jibson, R. W., Godt, J. W., Sato, H. P., Schmitt, R. G.,
Marc, O., and Hovius, N.: Presentation and Analysis of a Worldwide Database
of Earthquake-Induced Landslide Inventories, J. Geophys. Res.-Earth, 122,
1991–2015, https://doi.org/10.1002/2017JF004236, 2017.
Thiede, R. C. and Ehlers, T. A.: Large spatial and temporal variations in
Himalayan denudation, Earth Planet. Sc. Lett., 371–372, 278–293,
https://doi.org/10.1016/j.epsl.2013.03.004, 2013.
Ushio, T., Sasashige, K., Kubota, T., Shige, S., Okamoto, K., Aonashi, K.,
Inoue, T., Takahashi, N., Iguchi, T., Kachi, M., Oki, R., Morimoto, T., and
Kawasaki, Z.-I.: A Kalman Filter Approach to the Global Satellite Mapping of
Precipitation (GSMaP) from Combined Passive Microwave and Infrared
Radiometric Data, J. Meteorol. Soc. Jpn., 87A, 137–151,
https://doi.org/10.2151/jmsj.87A.137, 2009.
Van Asch, T. W. J., Buma, J., and Van Beek, L. P. H.: A view on some
hydrological triggering systems in landslides, Geomorphology, 30, 25–32,
https://doi.org/10.1016/S0169-555X(99)00042-2, 1999.
Vance, D., Bickle, M., Ivy-Ochs, S., and Kubik, P. W.: Erosion and exhumation
in the Himalaya from cosmogenic isotope inventories of river sediments,
Earth Planet. Sc. Lett., 206, 273–288, https://doi.org/10.1016/S0012-821X(02)01102-0, 2003.
Valagussa, A., Marc, O., Frattini, P., and Crosta, G. B.: Seismic and
geological controls on earthquake-induced landslide size, Earth Planet. Sc. Lett., 506, 268–281, https://doi.org/10.1016/j.epsl.2018.11.005, 2019.
Weidinger, J. T.: Predesign, failure and displacement mechanisms of large
rockslides in the Annapurna Himalayas, Nepal, Eng. Geol., 83, 201–216,
https://doi.org/10.1016/j.enggeo.2005.06.032, 2006.
Weidinger, J. T.: Stability and Life Span of Landslide Dams in the Himalayas
(India, Nepal) and the Qin Ling Mountains (China), in: Natural and Artificial
Rockslide Dams, edited by: Evans, S. G., Hermanns, R. L., Strom, A., and
Scarascia-Mugnozza, G., 243–277, Springer Berlin Heidelberg, Berlin,
Heidelberg, 2011.
Weidinger, J. T. and Korup, O.: Frictionite as evidence for a large Late
Quaternary rockslide near Kanchenjunga, Sikkim Himalayas, India –
Implications for extreme events in mountain relief destruction,
Geomorphology, 103, 57–65, https://doi.org/10.1016/j.geomorph.2007.10.021, 2009.
Weidinger, J. T., Schramm, J.-M., and Nuschej, F.: Ore mineralization causing
slope failure in a high-altitude mountain crest – on the collapse of an
8000 m peak in Nepal, J. Asian Earth Sci., 21, 295–306,
https://doi.org/10.1016/S1367-9120(02)00080-9, 2002.
Whipp, D. M., Ehlers, T. A., Blythe, A. E., Huntington, K. W., Hodges, K. V.,
and Burbank, D. W.: Plio-Quaternary exhumation history of the central
Nepalese Himalaya: 2. Thermokinematic and thermochronometer age prediction
model, Tectonics, 26, https://doi.org/10.1029/2006TC001991, 2007.
Wobus, C., Heimsath, A., Whipple, K., and Hodges, K.: Active out-of-sequence
thrust faulting in the central Nepalese Himalaya, Nature, 434, 1008–1011,
https://doi.org/10.1038/nature03499, 2005.
Wobus, C. W., Whipple, K. X., and Hodges, K. V.: Neotectonics of the central
Nepalese Himalaya: Constraints from geomorphology, detrital
40Ar∕39Ar thermochronology, and thermal modeling, Tectonics, 25,
https://doi.org/10.1029/2005TC001935, 2006.
Wulf, H., Bookhagen, B., and Scherler, D.: Climatic and geologic controls on
suspended sediment flux in the Sutlej River Valley, western Himalaya, Hydrol.
Earth Syst. Sci., 16, 2193–2217, https://doi.org/10.5194/hess-16-2193-2012,
2012.
Yanites, B. J., Tucker, G. E., and Anderson, R. S.: Numerical and analytical
models of cosmogenic radionuclide dynamics in landslide-dominated drainage
basins, J. Geophys. Res., 114, https://doi.org/10.1029/2008JF001088, 2009.
Yatagai, A., Kamiguchi, K., Arakawa, O., Hamada, A., Yasutomi, N., and
Kitoh, A.: APHRODITE: Constructing a Long-Term Daily Gridded Precipitation
Dataset for Asia Based on a Dense Network of Rain Gauges, B. Am.
Meteorol.
Soc., 93, 1401–1415, https://doi.org/10.1175/BAMS-D-11-00122.1,
2012
Zech, R., Zech, M., Kubik, P. W., Kharki, K., and Zech, W.: Deglaciation and
landscape history around Annapurna, Nepal, based on 10Be surface
exposure dating, Quaternary Sci. Rev., 28, 1106–1118,
https://doi.org/10.1016/j.quascirev.2008.11.013, 2009.
Short summary
We mapped eight monsoon-related (> 100 m2) and large (> 0.1 km2) landslides in the Nepal Himalayas since 1970. Adding inventories of Holocene landslides, giant landslides (> 1 km3), and landslides from the 2015 Gorkha earthquake, we constrain the size–frequency distribution of monsoon- and earthquake-induced landslides. Both contribute ~50 % to a long-term (> 10 kyr) total erosion of ~2 mm yr-1, matching the long-term exhumation rate. Large landslides rarer than 10Be sampling time drive erosion.
We mapped eight monsoon-related ( 100 m2) and large ( 0.1 km2) landslides in the Nepal Himalayas...