防灾减灾工程学报2017，Vol.37Issue(2)：264-272,9.DOI:10.13409/j.cnki.jdpme.2017.02.013
信息熵在震后深溪沟流域泥石流危险度评价中的应用
Application to Information Entropy in Post-earthquake Shenxi Gully Basin Hazard Assessment
摘要
Abstract
The 5.12 Wenchuan earthquake resulted in the disaster-prone to environment dramatical change of Shenxi gully basin.After the earthquake,debris flow hazards occurred frequently and caused serious damage.Therefore,effective hazard assessment of debris flow is urgently needed.To this end,the Shenxi gully was selected as the study area,which was divided into 41 subbasins by using GIS technique.Based on the information entropy theory,the 41 sub-basins information entropy values of eight factors were calculated.According to the eight factors information entropy values,the weights of the eight factors and debris flow comprehensive hazard degree index of each sub-basin were obtained.Finally,the hazard degrees of each sub-basin were judged.The result of information entropy method was compared with the results of geomorphic information entropy method and the field surveys.It turned out that the results of information entropy method was highly consistent with the results of field surveys.This study provides a theoretical basis for debris flow mitigation and layout of the constructions in Shenxi gully.关键词
泥石流/信息熵/危险度评价Key words
debris flow/information entropy/hazard assessment分类
天文与地球科学引用本文复制引用
宇岩,欧国强,王钧,潘华利,乔成..信息熵在震后深溪沟流域泥石流危险度评价中的应用[J].防灾减灾工程学报,2017,37(2):264-272,9.基金项目
科技部国际科技合作专项(2013DFA21720)、国家自然科学基金面上项目(41372331)、水利部公益性行业科研专项(201301058-1)资助 （2013DFA21720）
