Article (Scientific journals)
Inferring potential landslide damming using slope stability, geomorphic constraints, and run-out analysis: A case study from the NW Himalaya
Kumar, Vipin; Jamir, Imlirenla; Gupta, Vikram et al.
2021In Earth Surface Dynamics, 9 (2), p. 351 - 377
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Keywords :
Geophysics; Earth-Surface Processes
Abstract :
[en] Prediction of potential landslide damming has been a difficult process owing to the uncertainties related to landslide volume, resultant dam volume, entrainment, valley configuration, river discharge, material composition, friction, and turbulence associated with material. In this study, instability patterns of landslides, geomorphic indices, post-failure run-out predictions, and spatio-temporal patterns of rainfall and earthquakes are explored to predict the potential landslide damming sites. The Satluj valley, NW Himalaya, is chosen as a case study area. The study area has witnessed landslide damming in the past and incurred losses of USD?~30 million and 350 lives in the last 4 decades due to such processes. A total of 44 active landslides that cover a total ?m2 area and ?m3 volume are evaluated to identify those landslides that may result in potential landslide damming. Out of these 44, a total of 5 landslides covering a total volume of ?m3 are noted to form the potential landslide dams. Spatio-temporal variations in the pattern of rainfall in recent years enhanced the possibility of landslide triggering and hence of potential damming. These five landslides also revealed 24.8±2.7 to 39.8±4.0?m high debris flows in the run-out predictions.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Kumar, Vipin  ;  Université de Liège - ULiège > Département de géologie > Géologie de l'environnement
Jamir, Imlirenla;  CSIR - National Geophysical Research Institute, Hyderabad, India
Gupta, Vikram;  Wadia Institute of Himalayan Geology, Dehradun, India
Bhasin, Rajinder K.;  Norwegian Geotechnical Institute, Oslo, Norway
Language :
English
Title :
Inferring potential landslide damming using slope stability, geomorphic constraints, and run-out analysis: A case study from the NW Himalaya
Publication date :
23 April 2021
Journal title :
Earth Surface Dynamics
ISSN :
2196-6311
eISSN :
2196-632X
Publisher :
Copernicus GmbH
Volume :
9
Issue :
2
Pages :
351 - 377
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
Financial support. The field visits and laboratory analyses were funded by the Wadia Institute of Himalayan Geology, Dehradun, India.
Available on ORBi :
since 15 May 2022

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