IMHE OpenIR  > 山地灾害与地表过程重点实验室
Distribution Characteristics of Mass Movements in the Upper Bhote Koshi Watershed Before and After the Gorkha Earthquake and Their Susceptibility Evaluation
Language英语
Amar Deep Regmi1; Cui Peng1; Megh Raj Dhital2
Corresponding AuthorAmar Deep Regmi
2017
Source PublicationADVANCING CULTURE OF LIVING WITH LANDSLIDES, VOL 2: ADVANCES IN LANDSLIDE SCIENCE
Author of SourceMikos, M ; Tiwari, B ; Yin, Y ; Sassa, K
Pages847-857
meeting4th World Landslide Forum
Conference DateMAY 29-JUN 02, 2017
Conference PlaceLjubljana
CountrySLOVENIA
Contribution Rank1
AbstractThe 2015 Gorkha earthquake (Mw 7.8) triggered about 4000 mass movements in the mountainous areas of Nepal. We investigated the mass movements in the upper Bhote Koshi river valley, which is one of the most severely affected regions in central Nepal. In that valley, there were about 775 landslips before the earthquake and about 1360 new failures were initiated by the quake. The mass movement investigation was carried out based on detailed fieldwork and satellite image interpretation. These mass movements were classified into rock falls, rockslides, debris flows, colluvial slides and their distribution is strongly controlled by their position on the landscape. A majority of rock falls were located at higher elevations with very steep slopes consisting of hard rocks, such as quartzites, schists, and gneisses; rockslides occurred mainly on moderate to steep slopes; while most of the debris and colluvial slides developed on moderately steep slopes. Though a few large landslips were reactivated by the quake, most of such pre-earthquake landslides were insensitive to seismic shaking. The mass movements before the earthquake and those triggered by the earthquake were used for the preparation of landslide susceptibility maps of the region before and after the earthquake using GIS and an Evidential Belief Function model. Subsequently, the two susceptibility maps were combined to illustrate the locations of maximum landslide probability. The combined susceptibility map can be utilized for future land-use planning and infrastructural development in the region.
KeywordMass movement Inventory Earthquake Susceptibility
DOI10.1007/978-3-319-53498-5_97
ISBN978-3-319-53498-5; 978-3-319-53497-8
Indexed BySCI
WOS IDWOS:000438665000097
Citation statistics
Document Type会议论文
Identifierhttp://ir.imde.ac.cn/handle/131551/23476
Collection山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China;
2.Tribhuvan Univ, Cent Dept Geol, Kirtipur, Nepal
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
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Amar Deep Regmi,Cui Peng,Megh Raj Dhital. Distribution Characteristics of Mass Movements in the Upper Bhote Koshi Watershed Before and After the Gorkha Earthquake and Their Susceptibility Evaluation[C]//Mikos, M, Tiwari, B, Yin, Y, Sassa, K,2017:847-857.
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