Relationships between moment magnitude and fault parameters:theoretical and semi-empirical relationships-中国期刊网

摘要 Faultparametersareimportantinearthquakehazardanalysis.Inthispaper,theoreticalrelationshipsbetweenmomentmagnitudeandfaultparametersincludingsubsurfacerupturelength,downdiprupturewidth,rupturearea,andaverageslipoverthefaultsurfacearededucedbasedonseismologicaltheory.Thesetheoreticalrelationshipsarefurthersimplifiedbyapplyingsimilarityconditionsandanuniqueformisestablished.Then,combiningthcsimplifiedtheoreticalrelationshipsbetweenmomentmagnitudeandfaultparameterswithseismicsourcedataselectedinthisstudy,apracticalsemi-empiricalrelationshipisestablished.Theseismicsourcedataselectedisalsotousedtoderiveempiricalrelationshipsbetweenmomentmagnitudeandfaultparametersbytheordinaryleastsquareregressionmethod.Comparisonsbetweensemi-empiricalrelationshipsandempiricalrelationshipsshowthattheformerdepictdistributiontrendsofdatabetterthanthelatter.Itisalsoobservedthatdowndiprupturewidthsofstrikeslipfaultsaresaturatedwhenmomentmagnitudeismorethan7.0,butdowndiprupturewidthsofdipslipfaultsarenotsaturatedinthemomentmagnituderangesofthisstudy.

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Relationships between moment magnitude and fault parameters:theoretical and semi-empirical relationships

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Relationships between moment magnitude and fault parameters:theoretical and semi-empirical relationships

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