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Earth Surface Dynamics An interactive open-access journal of the European Geosciences Union
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Volume 5, issue 1
Earth Surf. Dynam., 5, 199–209, 2017
https://doi.org/10.5194/esurf-5-199-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Earth Surf. Dynam., 5, 199–209, 2017
https://doi.org/10.5194/esurf-5-199-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 28 Mar 2017

Research article | 28 Mar 2017

A new CT scan methodology to characterize a small aggregation gravel clast contained in a soft sediment matrix

Laurent Fouinat et al.
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Cited articles  
Allix, A.: Les avalanches de l'hiver 1922-1923 en Dauphiné, Rev. Géographie Alp. 11, 513–527, https://doi.org/10.3406/rga.1923.5519, 1923.
Ancey, C. and Bain, V.: Dynamics of glide avalanches and snow gliding: Glide avlanches and snow gliding, Rev. Geophys., 53, 745–784, https://doi.org/10.1002/2015RG000491, 2015.
Appleby, P. G., Richardson, N., and Nolan, P. J.: 241Am dating of lake sediments, in: Environmental History and Palaeolimnology, edited by: Smith, J. P., Appleby, P. G., Battarbee, R. W., Dearing, J. A., Flower, R., Haworth, E. Y., Oldfield, F., and O'Sullivan, P. E., Developments in Hydrobiology. Springer Netherlands, 35–42, 1991.
Arnaud, F., Lignier, V., Revel, M., Desmet, M., Beck, C., Pourchet, M., Charlet, F., Trentesaux, A., and Tribovillard, N.: Flood and earthquake disturbance of 210Pb geochronology (Lake Anterne, NW Alps), Terra Nova, 14, 225–232, 2002.
Arnaud, F., Poulenard, J., Giguet-Covex, C., Wilhelm, B., Révillon, S., Jenny, J.-P., Revel, M., Enters, D., Bajard, M., Fouinat, L., Doyen, E., Simonneau, A., Pignol, C., Chapron, E., Vannière, B., and Sabatier, P.: Erosion under climate and human pressures: An alpine lake sediment perspective, Quaternary Sci. Rev., 152, 1–18, https://doi.org/10.1016/j.quascirev.2016.09.018, 2016.
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This study focuses on the creation of a novel CT scan methodology at the crossroads between medical imagery and earth sciences. Using specific density signatures, pebbles and/or organic matter characterizing wet avalanche deposits can be quantified in lake sediments. Starting from AD 1880, we were able to identify eight periods of higher avalanche activity from sediment cores. The use of CT scans, alongside existing approaches, opens up new possibilities in a wide variety of geoscience studies.
This study focuses on the creation of a novel CT scan methodology at the crossroads between...
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