The periglacial engine of mountain erosion – Part 2: Modelling large-scale landscape evolution
Summary: We incorporate relations between climate, sediment thickness and periglacial processes quantified in the accompanying paper into a landscape evolution model. This allows us to time-integrate the periglacial contribution to mountain topography on million-year time scales. It is a robust result of our simulations that periglacial processes lead to topographic smoothing. Owing to the climate dependency, this smoothing leads to formation of low-relief surfaces at altitudes controlled by temperature.
Earth Surf. Dynam., 3, 463-482, doi:10.5194/esurf-3-463-2015, 2015
The periglacial engine of mountain erosion – Part 1: Rates of frost cracking and frost creep
Summary: An increasing number of studies demonstrates links between the intensity of periglacial processes and bedrock erosion in steep mountain landscapes. Here, we quantify the dependence of periglacial processes on temperature and sediment thickness. This allows us to model frost processes across the full range of settings encountered in mountain landscapes. We find that sediment mantle thickness strongly modulates the relation between climate and periglacial weathering and sediment transport.
Earth Surf. Dynam., 3, 447-462, doi:10.5194/esurf-3-447-2015, 2015
Short Communication: Evidence for non-Gaussian distribution of rock weathering rates
Summary: This study shows that the weathering rates of limestone, determined from of an ancient eroded edifice, can exhibit highly non-Gaussian behavior. Moreover, the asymmetric long-tailed curve was found to have similar characteristics to those of rate distributions measured on microscopic regions of limestone surfaces in laboratory experiments. Such similar behavior could reflect analogous chemical and mechanical weathering mechanisms operating over a range of spatial and temporal scales.
Earth Surf. Dynam., 3, 441-445, doi:10.5194/esurf-3-441-2015, 2015
Denudation rates across the Pamir based on 10Be concentrations in fluvial sediments: dominance of topographic over climatic factors
Earth Surf. Dynam., 3, 423-439, doi:10.5194/esurf-3-423-2015, 2015
Vertical movements of frost mounds in subarctic permafrost regions analyzed using geodetic survey and satellite interferometry
Earth Surf. Dynam., 3, 409-421, doi:10.5194/esurf-3-409-2015, 2015