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FloodcontrolriskanalysisbasedonIntegratedTime - VaryingMomentmodeland
DynamicMonteCarlomethod
1,2
3,4,5,6,7,8
1,2
DONGLijun ,DONGXiaohua ,MAYaoming ,
1,2
1,2
9
WEIChong ,YUDan ,SUZhongbo
(1.CollegeofHydraulicandEnvironmentalEngineering,ChinaThreeGorgesUniversity,Yichang 443002,China;
2.EngineeringResearchCenterofEco - EnvironmentintheThreeGorgesReservoirRegionofMinistryofEducation,
Yichang 443002,China;
3.Land - AtmosphereInteractionanditsClimaticEffectsGroup,StateKeyLaboratoryofTibetanPlateauEarthSystem,Environment
andResources (TPESER),InstituteofTibetanPlateauResearch,ChineseAcademyofSciences,Beijing 100101,China;
4.CollegeofEarthandPlanetarySciences,UniversityofChineseAcademyofSciences,Beijing 100049,China;
5.CollegeofAtmosphericScience,LanzhouUniversity,Lanzhou 730000,China;
6.NationalObservationandResearchStationforQomolongmaSpecialAtmosphericProcessesandEnvironmentalChanges,
Dingri 858200,China;
7.KathmanduCenterofResearchandEducation,ChineseAcademyofSciences,Beijing 100101,China;
8.China - PakistanJointResearchCenteronEarthSciences,ChineseAcademyofSciences,Islamabad 45320,Pakistan;
9.FacultyofGeo - InformationScienceandEarthObservation,UniversityofTwente,Enschede 7500AE,TheNetherlands)
Abstract:Comparedwiththehistoricalhydrologicalsituationthatservesasthebasisforthedesignofwaterconser
vancyandhydropowerprojects ,thesituationaffectedbyglobalclimatechangeinfuturewilldeviatefrom it.This
willleadtochangesofhydrologicalanalysisresultsofrunoffanddesignfloods.Asaresult ,thechangeswillaffect
thelong - termoperationsafetyandfloodcontrolofcascadereservoirsinthebasin.ThisstudytakestheYalongRiv
erbasinastheresearcharea ,andquantitativelyidentifiesthechangesinmeteorologicalandhydrologicalelements
ofthebasinunderfutureclimatechangeconditionsthroughcouplingtheSWAThydrologicalmodelandglobalcli
matemodel.Basedonthis , anIntegratedTime - VaryingMoment(ITVM) modelthatcanconsidernon -
stationarityandhistoricalextraordinaryfloods(HEFs) informationjointlyisproposedtocarryoutthenon -
stationaryfrequencyanalysis.Finally ,thefloodcontrolriskassessmentoftheYangfanggouhydropowerstationun
derfutureclimatechangeconditionsisconductedbasedontheDynamicMonteCarlo (DMC)method.Themainre
sultsareasfollows :thecalibratedSWATmodelhashighsimulationaccuracyandgoodspatialapplicabilityinthe
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