Preliminary analysis on characteristics of coseismic deformation associated with MS=8.1 western Kunlunshan Pass earthquake in 2001-中国期刊网

摘要 BasedontheanalysisofcoseismicdeformationinthemacroscopicepicentralregionextractedbyDifferentialInterferometricSyntheticApertureRadar(D-InSAR),andcombinedwiththeseismicactivity,focalmechanismsolutionsoftheearthquakeandfieldinvestigation,thecharacteristicofcoseismicdeformationofMS=8.1westernKunlunshanPassearthquakein2001wasresearched.ThestudyshowsthatitsepicenterliesinthenortheastsideofHohSaiHu;andtheseismogenicfaultinthemacroscopicepicentralregioncanbedividedintotwocentraldeformationfields:thewestandeastsegmentswiththelengthsof42kmand48km,respectively.Thewholefaultextendsabout90km.Fromthedistributionofinterferometryfringes,thecharacteristicofsinistralstrikeslipofseismogenicfaultcanbeidentifiedclearly.Thedeformationsonbothsidesofthefaultaredifferentwithanobviouslyhighervalueonthesouthside.Inthevicinityofmacroscopicepicenter,themaximumdisplacementinlookdirectionisabout288.4cmandtheminimumis224.0cm;themaximumsinistralhorizontaldislocationofseismogenicfaultnearthemacroscopicepicenteris738.1cmandtheminimumis551.8cm.

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Preliminary analysis on characteristics of coseismic deformation associated with MS=8.1 western Kunlunshan Pass earthquake in 2001

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Preliminary analysis on characteristics of coseismic deformation associated with MS=8.1 western Kunlunshan Pass earthquake in 2001

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