The Characteristics of Time Series of Strong Earthquakes in the World and the Chinese Mainland-中国期刊网

摘要 Basedonthestrongearthquakecatalogue,thispaperdiscussesthecharacteristicsofthetimeseriesofstrongearthquakeactivitiesintheworld,westernChinesemainlandanditsperipheral"bigtriangleseismicregion",aswellastheChinesemainland.AccordingtotheanalysisoftheperiodicfeaturesofglobalseismicityofM≥8.0strongevents,itisfoundthatthereissignificantdifferenceinglobalseismicitybeforeandafterthe1960s.StatisticalanalysiswiththeFishermethodhasrevealedthatthe"bigtriangularseismicregion"hasexperiencedaprocessofM8.0earthquakeactivitywithadurationofoverahundredyearssince1800.Furtheranalysisshowsthattheglobalseismicityandthe"bigtriangularseismicregion"possiblyhasaperiodofahundred-yearscale,andhasquasisynchronicitytoacertainextent.TheshallowearthquakeactivityofMS≥7.0intheChinesemainlandisobviouslycontrolledbytheseismicityinthebigtriangularseismicregionandbyglobalseismicityinalargerspatial-scale.Intermsofthetimeseriesoftheseearthquakes,theseismicityshowsadecadalandcentury-scaleactivitypatterns.

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The Characteristics of Time Series of Strong Earthquakes in the World and the Chinese Mainland

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The Characteristics of Time Series of Strong Earthquakes in the World and the Chinese Mainland

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