灾害学Issue(1)：8-15,8.DOI:10.3969/j.issn.1000-811X.2015.01.003
基于余震序列分布信息的地震极灾区快速判断方法研究
Rapid Determination Method of Extreme Earthquake Disaster Area Based on Aftershock Sequence Spatial Distribution
摘要
Abstract
Determination method on earthquake disaster area based on aftershock sequence in a short time af-ter an earthquake (within 24 h)is studied by using the magnitude weighted standard deviation ellipse method.The results are as follows:① It’s feasible to use this method in determining the macro-epicenter,while the accuracy varies with earthquake cases of different seismic source rupture types.Cases of the dip-slip rupture type have the highest accuracy;② Generally,this method shows a lower accuracy in determining the direction of long axis than the method of using active faults closest to the epicenter.However,as to cases of the dip-slip rupture type,this method is higher than method of faults data judgment in accuracy.关键词
标准差椭圆/余震序列/宏观震中/地震极灾区Key words
standard deviational ellipse/aftershock sequence/macro-epicenter/extreme earthquake disaster area分类
天文与地球科学引用本文复制引用
杨天青,姜立新,董曼,潘博,席楠..基于余震序列分布信息的地震极灾区快速判断方法研究[J].灾害学,2015,(1):8-15,8.基金项目
“十二五”国家科技支撑计划项目（2012BAK15B06－02）；地震科技星火计划项目 （）
