Difference between focal mechanisms of Dayao earthquake doublet sequence-中国期刊网

摘要 UsingthemaximumamplituderatiosofverticalcomponentofPandSwavesrecordedbyaregionalnetwork,921focalmechanismsofDayaoearthquakedoubletsequencearedeterminedbymeansofsyntheticseismogramsofapointsourceofdislocationinaplanelayeredmedium.Amongthem,389focalmechanismsareintheaftershocksequenceofM6.2earthquakeoccurredon21July,2003andtheother532focalmechanismsareintheaftershocksequenceofM6.1earthquakeoccurredon16October,2003inDayao,Yunnan.Thefocalmechanismconsistentparameteraofthetwoaftershocksequencesarecalculatedandanalyzed.Accordingtothefocalmechanismconsistentparametera,thefocalmechanismsofthefirstaftershocksequencearemoreconsistentthanthoseofthesecond.AccordingtothecomparisonofCMTsolutionsofthetwoM6earthquakes,thephysicalmechanismofthedoubletintheintra-plateearthquakeisverycomplex,andmanyprocessesareinvolvedandinteractedwitheachother.Thisdoubletprovidesinsightsintoearthquakeclustering,triggeringandstresscycling.

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Difference between focal mechanisms of Dayao earthquake doublet sequence

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Difference between focal mechanisms of Dayao earthquake doublet sequence

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