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基于GRACE时变重力场模型研究印度河-恒河流域水储量变化.docx

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基于GRACE时变重力场模型研究印度河-恒河流域水储量变化 Title:InvestigationofWaterStorageVariationsintheIndus-GangesRiverBasinUsingtheGRACETime-VaryingGravityFieldModel Abstract: ThewaterresourcesoftheIndus-GangesRiverbasinplayacrucialroleinthesocio-economicdevelopmentofSouthAsia.Understandingthevariationsinwaterstorageinthisregioniscriticallyimportantforsustainablewaterresourcemanagement.ThispaperaimstoinvestigatethewaterstoragechangesintheIndus-GangesRiverbasinusingtheGravityRecoveryandClimateExperiment(GRACE)time-varyinggravityfieldmodel.TheGRACEdataprovidesanunprecedentedopportunitytomonitorthewaterstoragevariationsinlargeriverbasins,andithasbeenwidelyusedtostudywateravailabilityanddepletioninvariousregionsglobally.ThestudyutilizestheGRACEdatatoassessthespatialandtemporalpatternsofwaterstoragevariationsintheIndus-GangesRiverbasinoveraspecificperiod,providingvaluableinsightsforwaterresourceplanningandmanagementintheregion. 1.Introduction: TheIndus-GangesRiverbasinisoneofthemostpopulatedandagriculturallysignificantregionsintheworld.Thebasinspansacrossmultiplecountries,includingIndia,Pakistan,Nepal,andBangladesh,andhasacomplexhydrologicalsystem.Theavailabilityandequilibriumofwaterresourcesinthisregiongreatlyinfluenceagriculturalproductivity,foodsecurity,andoverallsocio-economicdevelopment.However,thebasinfacesvariouschallenges,suchasincreasingwaterdemand,climatechangeimpacts,andunsustainablewatermanagementpractices,whichemphasizetheneedforabetterunderstandingofwaterstoragevariations. 2.Methodology: TheGRACEsatellitemission,launchedin2002,provideshigh-resolutiondataonEarth'sgravityfieldchanges.Thetime-varyinggravityfieldmeasurementsobtainedfromGRACEenabletheestimationofchangesinthetotalwaterstorageofriverbasins,includinggroundwater,soilmoisture,andsurfacewater.ThispaperutilizestheGRACEdatatoestimatethechangesinwaterstorageintheIndus-GangesRiverbasinforaspecificperiod.Thedataanalysisinvolvesseveralsteps,includingpreprocessingoftheGRACEdata,modelingofothergeophysicalprocessesinfluencingthegrav