灾害学2009，Vol.24Issue(4)：68-72,80,6.
基于GIS技术的汶川8.0级地震诱发地质灾害危险性评价——以四川省安县为例
Evaluation on Geological Disasters Triggered by the 5. 12 Wenchuan Earthquake Based on GIS Technology——A Case Study in Anxian County of Sichuan Province
摘要
Abstract
187 locations of geological disasters were identified in Anxian County, Mianyang, based on an emergency field investigation and remote sensing interpretation after the Wenchuan earthquake of magnitude 8.0. By use of GIS technology, a statistical analysis is made on the relation between distribution of seismic geological disasters and other related factors, such as distance to earthquake fault, slope, lithology and rivers. The results show that the earthquake geological disasters in the region are on the zonal distribution along the fault zone and along the river are on the linear distribution. Earthquake geological disasters are closely related to terrain slope. The majority of disaster points concentrate within the range of 15°～ 45°. Earthquake geological disasters and terrain have a close correlation. Geological disasters in the northern mountain areas are significantly higher than that in the southern plain areas. Most landslides occur in soft rock such as phyllite and shale, many of which are soil landslides. While, most collapses occur in hard rocks such as magmatic rock.关键词
汶川8.0级地震/地质灾害/危险性/遥感解译/GIS/四川安县Key words
Wenchuan earthquake of magnitude 8.0/ geological disaster/ risk/ remote sensing interpretation/ GIS/ Sichuan's Anxian County分类
天文与地球科学引用本文复制引用
杨泰平,唐川,齐信..基于GIS技术的汶川8.0级地震诱发地质灾害危险性评价——以四川省安县为例[J].灾害学,2009,24(4):68-72,80,6.基金项目
国家自然科学基金(40772206) （40772206）
国家重点基础研究发展计划(2008CB425801) （2008CB425801）
