Research on Spatial Distribution Characteristics of Major Landslides Hazards in the Himalayas
This study focuses on the major landslide hazards in the Himalayas,examining the spatial distribution relationships between these hazards and factors such as elevation,slope angle,slope aspect,fault structures,and river systems,and the following main conclusions were obtained:Major landslides in the study area are distributed in clusters,with high-density landslide areas respectively located in the west,central,and east of the Himalayas.These areas show obvious fault structure control characteristics,controlled by structures such as the main central thrust,the South Tibetan Detachment System,the Yarlung Zangbo suture zone,and north-south-oriented rift valleys.The closer the proximity to fault structures,the more major landslide disasters develop.Landslides are most prevalent on steep slopes with the slope angle ranging from 20° to 40°,which are primarily distributed along the banks of rivers,indicating that river systems and slope angles jointly control the initiation of landslides.By analyzing and discussing the controlling effects of diverse factors on the initiation of major landslides,this study can guide the prediction and forecasting of major landslide hazards in the study area,providing valuable insights for early-stage engineering survey and site selection,as well as regional disaster prevention and mitigation efforts.
Himalayasmajor landslidesdisaster-inducing factorsspatial distribution characteristicsmain controlling factors
NETL
NSTL
万方数据
