WIM-based geological hazard susceptibility evaluation:Taking Zunhua City as an example
Taking Zunhua City as an example,we used cluster analysis to determine eight factors,including slope height,slope,slope di-rection,engineering geological rock group,tectonics,normalized vegetation index(ND VI),water system,and road,to form a geological hazard susceptibility evaluation index system,and used the weighted information volume(WIM)model after coupling the analysis of lay-ers(AHP)and information volume(IM)model to evaluate the geological hazard susceptibility in the study area.The results showed that the areas of high,medium,low,and non-prone areas in the study area were 60.94 km2(4.007％),487.87 km2(32.076％),330.93 km2(21.757％),and 641.26 km2(42.160％),respectively,and the AUC value of WIM evaluation result was 0.853,which was higher than the IM evaluation result(AUC=0.712),indicating that the WIM model evaluation result was more accurate.It can provide a refer-ence basis for geological hazard evaluation,disaster prevention,and mitigation work in the region.
geological hazardsweighted information volume model(WIM)susceptibility evaluationgeographic information systemcluster analysis
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万方数据
