Abnormal Earthquake Intensity Areas and Formation Mechanism of the Minxian-Zhangxian M_S6.6 Earthquake on July 22,2013,Gansu-中国期刊网

摘要 OnJuly22,2013,theMinxian-ZhangxianM_S6.6earthquakeoccurredontheeastsegmentofLintan-Dangchangfault.TheanalysisofdigitalelevationandremotesensingimagingshowsthattheeastsegmentofLintan-Dangchangfaultisstillactiveandthemainthrustfeatureofthefaultswitchestoleftlateralslip.Withthefieldresearchofintensityanddamage,severalabnormalareasofdegreeⅧspreadintheisoseismallineofdegreeⅦandsomeabnormalareasofdegreeⅦspreadintheisoseismallineofdegreeⅥ.Theseabnormalareasaredistributedalongthehangingwallofthefaultinawidthof2km.TheanalysisbasedontheremotesensinganddigitalelevationmodelshowsthatthesegmentoftheLintan-DangchangfaultsouthofMinxianmainlyslipsinleftliteral.Thefaultmovementmadethesoilsoftinthefaultzone.Theearthquakemotionpropagatedalongthefaultzone.Thereforethestrongearthquakemotioncausedfoundationfailureinthesoftsoilalongthefaultzoneandtheabnormalintenseareasofdisasterformed.

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Abnormal Earthquake Intensity Areas and Formation Mechanism of the Minxian-Zhangxian M_S6.6 Earthquake on July 22,2013,Gansu

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Abnormal Earthquake Intensity Areas and Formation Mechanism of the Minxian-Zhangxian M_S6.6 Earthquake on July 22,2013,Gansu

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