联合Sentinel-1A和GPS数据分析高雄地震形变-豆柴文库

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联合Sentinel-1A和GPS数据分析高雄地震形变
Title:AnalysisofKaohsiungEarthquakeDeformationUsingSentinel-1AandGPSData
Introduction:
Earthquakesarenaturaldisastersthatcancausesignificantdamagetoinfrastructureandposeathreattohumanlives.Theabilitytoaccuratelyanalyzeandmonitorseismicactivityiscrucialfordisastermanagementandriskassessment.Inthispaper,wefocusonanalyzingthedeformationcausedbytheKaohsiungearthquakeinTaiwanusingdatafromSentinel-1AandGPS.
1.Background:
1.1KaohsiungEarthquake:
TheKaohsiungearthquake,alsoknownastheMeinongearthquake,occurredonFebruary6,2016,withamagnitudeof6.4.ItcausedseveredamagetobuildingsandinfrastructureintheKaohsiungregion.
1.2Sentinel-1A:
Sentinel-1AisaEuropeanSpaceAgencysatelliteequippedwithsyntheticapertureradar(SAR).ItprovidescontinuousmonitoringofEarth'ssurface,enablingresearcherstomeasuregrounddeformationwithhighaccuracyandspatialresolution.
1.3GPS:
GlobalPositioningSystem(GPS)isanavigationsystemthatusessatellitesignalstodeterminepreciselocationsonEarth'ssurface.Ithasbeenwidelyusedforgeodeticmeasurementandisanimportanttoolformonitoringcrustalmovements.
2.DataAcquisition:
2.1Sentinel-1ASARData:
Sentinel-1ASARdatacoveringtheKaohsiungregionbeforeandaftertheearthquakewereacquiredfromtheEuropeanSpaceAgency'sCopernicusOpenAccessHub.Thesedataprovideinformationongrounddeformationbasedontheinterferometricsyntheticapertureradar(InSAR)technique.
2.2GPSData:
PreciseGPSdatafrompermanentstationsinandaroundtheKaohsiungregionwerecollectedfromtheTaiwanCentralWeatherBureau.Thesedatacontaincontinuousmeasurementsofgrounddisplacement.
3.Methodology:
3.1InSARAnalysis:
TheacquiredSentinel-1ASARdatawereprocessedusingInSARtechniquestogenerateinterferograms.Interferogramsquantitativelyrepresentthesurfacedeformationcausedbytheearthquake.Theinterferometricphase,whichcorrespondstothedeformationsignal,wasunwrappedtoobtaintheabsolutedisplacement.
3.2GPSAnalysis:
ThecollectedGPSdatawereanalyzedusingprecisepointpositioning(PPP)techniques.ThePPPmethodallowsforhigh-precisionestimationo