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<identifier>oai:HAL:hal-01543331v1</identifier>
<datestamp>2018-01-11</datestamp>
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<title lang=en>Numerical modelling of erosion processes in the Himalayas of Nepal: effects of spatial variations of rock strength and precipitation</title>
<creator>GODARD, Vincent</creator>
<creator>Lavé, Jérome</creator>
<creator>CATTIN, Rodolphe</creator>
<contributor>Centre européen de recherche et d'enseignement de géosciences de l'environnement (CEREGE) ; Institut de Recherche pour le Développement (IRD) - Aix Marseille Université (AMU) - Collège de France (CdF) - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<description>International audience</description>
<source>ISSN: 2041-4927</source>
<source>EISSN: 0305-8719</source>
<source>The Geological Society, London, Special Publications</source>
<publisher>Geological Society of London</publisher>
<identifier>hal-01543331</identifier>
<identifier>https://hal-amu.archives-ouvertes.fr/hal-01543331</identifier>
<source>https://hal-amu.archives-ouvertes.fr/hal-01543331</source>
<source>The Geological Society, London, Special Publications, Geological Society of London, 2006, 253 (1), pp.341-358. 〈10.1144/GSL.SP.2006.253.01.18〉</source>
<identifier>DOI : 10.1144/GSL.SP.2006.253.01.18</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1144/GSL.SP.2006.253.01.18</relation>
<language>en</language>
<subject>[SDU.STU.GM] Sciences of the Universe [physics]/Earth Sciences/Geomorphology</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>The interplay between tectonics and erosion has a predominant control on the evolution of the morphology of mountain belts. Here we investigate the modalities of deformation in Central Nepal on a c. 100 ka time scale in response to tectonic and external forcings, through the use of a finite-element thermomechanical model coupled with an integrative denudation formulation that accounts for fluvial incision and hillslope landsliding. We study the complex coupling existing between tectonics and erosion, with special emphasis on the influences of rock strength and rainfall distributions. Our results underline the key role played by lithologic variations in the elevation of both rivers and mean topography. We show that the location of the Main Frontal Thrust is mainly controlled by the low erodability of the unconsolidated sandstone in the Siwaliks Hills. As previously suspected (Burbank et al. 2003), our simulations demonstrate that the pattern of uplift in Nepal is mainly dependent on both erodability and fault geometry, rather than on rainfall distribution.</description>
<date>2006-01-01</date>
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