Distribution Characteristics of Mass Movements in the Upper Bhote Koshi Watershed Before and After the Gorkha Earthquake and Their Susceptibility Evaluation

doi:10.1007/978-3-319-53498-5_97

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 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
	Amar Deep Regmi 1; Cui Peng1 ; Megh Raj Dhital 2
	2017
会议日期	MAY 29-JUN 02, 2017
会议地点	Ljubljana
关键词	Mass movement Inventory Earthquake Susceptibility
DOI	10.1007/978-3-319-53498-5_97
页码	847-857
通讯作者	Amar Deep Regmi
英文摘要	The 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.
产权排序	1
会议录	ADVANCING CULTURE OF LIVING WITH LANDSLIDES, VOL 2: ADVANCES IN LANDSLIDE SCIENCE
语种	英语
ISBN号	978-3-319-53498-5; 978-3-319-53497-8
WOS记录号	WOS:000438665000097
内容类型	会议论文
源URL	[http://ir.imde.ac.cn/handle/131551/23476]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
作者单位	1.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
推荐引用方式 GB/T 7714	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]. 见:. Ljubljana. MAY 29-JUN 02, 2017.