The Yushu Earthquake Triggered Landslide Hazard Evaluation Based on Weight of Evidence Method
详细信息
- 责任者：Xu Chong (Key Laboratory of Active Tectonics and Volcanoes ; Institute of Geology ; Chinese Earthquake Administration ; Beijing 100029 ; China) ; Xu Xiwei
- 刊名：Seismology and Geology
- 出版年：2013
- 卷期：35(1)
- 关键词：玉树地震2010 ; Yushu earthquake 2010 ; 滑坡 ; landslides ; 青海 ; Qinghai Province
- 页码：p.151-164
- 图表：illus., 60 refs.
- 分类号：1800
- issnNo：ISSN0253-4967
- isbnNo：CN11-2192/P
摘要
2036 landslides were triggered by the 2010 Yushu earthquake from aerial photographs and remote sensing images interpreting,verified by selected field checking. In this paper,twelve factors that influence landslide occurrence,including distance from main co-seismic surface ruptures,peak ground acceleration(PGA),elevation,slope angle,slope aspect,slope curvature,slope position,distance from drainages,lithology,distance from faults,distance from roads,normalized difference vegetation index(NDVI),are selected as landslide hazard evaluation factors. Two types of landslide hazard index map are derived using two "weight of evidence" methods based on Geographical Information Systems(GIS)technology.The success rate of Add-"weight of evidence" method is 80.32%,and the success rate of Subtract-"weight of evidence" method is 80.19%,both are satisfactory.The resulting hazard evaluation maps are divided into five categories, i.e.extremely high,high,moderate,low,and extremely low,respectively.The landslide hazard maps can be used to identify and delineate unstable hazard-prone areas. It can also help planners to choose favourable locations for development schemes,such as infrastructures,buildings,road construction,and environmental protection.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |