Assessment of Post-earthquake secondary geological Hazard Risk based on GIS
The strong effect of ground damage and the seriousearthquake-induced geological disasters are the notable featuresof Wenchuan earthquake. The distribution ofearthquake-induced geological disasters in the earthquake isclosely related to the distribution of earthquake fault, at the sametime, its also influenced and controlled by the physical geography,lithology, geological structure and human activities. The papersystematically generalizes the development characteristics,formation conditions and inducing factors of geological disasterscombining with analysis of site conditions in Beichuan County.Analysis of correlative character between secondary geologicaldisasters and the factor ,and use information value method toevaluate the hazard of secondary geological disasters. The hazardmap was obtained by summing up all geographical correspondingpixel values from each spatial layers according to informationvalue. So geographical information systems combined withinformation value model can be quickly and effectively evaluatethe spatial distribution and hazard of secondary geologicaldisasters.
Jun Du Chao Wang Shanling Peng Panpan Chen
Institute of Geographical Sciences, Henan Academy of Sciences Henan Key Laboratory of Remote Sensing and GIS Zhengzhou China
国际会议
The 19th International Conference on Geoinformatics(第19届国际地理信息科学与技术大会 19 Geoinformatics)
上海
英文
1-6
2011-06-01（万方平台首次上网日期，不代表论文的发表时间）