Geomorphic impacts, age and significance of two giant landslide dams in the Nepal Himalayas: Ringmo‐Phoksundo (Dolpo District) and Dhampu‐Chhoya (Mustang District).

• Main Authors: Fort, Monique, Braucher, Regis, Bourles, Didier, Guillou, Valery, Rimal, Lila Nath, Gribenski, Natasha, Cossart, Etienne
• Other Authors: Pôle de recherche pour l'organisation et la diffusion de l'information géographique (PRODIG), Université Paris 1 Panthéon-Sorbonne (UP1)-Institut de Recherche pour le Développement (IRD)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris-Sorbonne (UP4)-AgroParisTech-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Remote Sensing, Department of Mines and Geology,Kathmandu, Department of Physical Geography Stockholm, Stockholm University
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2014
• Subjects: glissement de terrain; relief; orogènes; impact géomorpholoique; Himalayas; Népal; [SDU]Sciences of the Universe [physics]; [SDU.STU]Sciences of the Universe [physics]/Earth Sciences; [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology; permafrost
• Online Access: https://hal.science/hal-01262118; https://hal.science/hal-01262118/document; https://hal.science/hal-01262118/file/EGU%202014%20Fort%20%26%20al.%20Poster_Dolpo_Dhumpu.pdf

International audience Large catastrophic slope failures have recently retained much attention in the northern dry Himalayas (Hewiitt 2009). They play a prominent role in the denudation history of active orogens at a wide range of spa7al and 7me scales (Korup & Clague, 2009), and they impact durably landforms and process evolution in upstream catchments. Their occurrence mostly results from three different potential triggers: earthquakes, post‐glacial debuttressing, and permafrost melting. We focus on two examplesof giant rock slope failures that occurred across and north of the Higher Himalaya of Nepal and assess their respective influence on the regional, geomorphic evolution.