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北部湾三维潮流场数值研究(英文).docx

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北部湾三维潮流场数值研究(英文) StudyonNumericalSimulationofThree-DimensionalTidalCurrentFieldintheBeibuGulf Abstract: TheBeibuGulfisasemi-enclosedseaareawithcomplextopographyanduniquehydrologicalcharacteristics.Thethree-dimensionaltidalcurrentfieldintheBeibuGulfplaysanimportantroleinthematerialandenergyexchangeprocessbetweentheseaandthelandandhasasignificantinfluenceonthemarineecologicalenvironment.Inthispaper,anumericalsimulationmethodisusedtostudythethree-dimensionaltidalcurrentfieldintheBeibuGulf,andtheresultsshowthatthereareobviousdifferencesinthedistributionandstrengthoftidalcurrentsindifferentregionsoftheBeibuGulf,whichareaffectedbyfactorssuchaslocaltopographyandoffshoreboundaryconditions. Introduction: TheBeibuGulfislocatedinthesouthwestoftheSouthChinaSea,withaseaareaofapproximately126,000squarekilometers.Itisauniquesemi-enclosedseaareawithacomplextopography.ThehydrologicalcharacteristicsoftheBeibuGulfareaffectedbythemonsoonclimateandthecomplexcoastline,whichleadtodiversewatertemperature,salinity,andtidalcurrentpatterns.Thethree-dimensionaltidalcurrentfieldintheBeibuGulfplaysanimportantroleinthematerialandenergyexchangeprocessbetweentheseaandtheland.ItisalsoakeyfactoraffectingthemarineecologicalenvironmentintheBeibuGulf.Therefore,itisnecessarytostudythethree-dimensionaltidalcurrentfieldintheBeibuGulf. ResearchMethod: Thethree-dimensionaltidalcurrentfieldintheBeibuGulfwasnumericallysimulatedusingtheFiniteVolumeCoastalOceanModel(FVCOM).ThemodeldomaincoveredtheentireBeibuGulfandadjacentareas,withagridresolutionof1/12degrees.Themodelinputdataincludetidalforcing,landelevation,bathymetry,andoffshoreboundaryconditions.Theinitialandboundaryconditionswereobtainedfromahigh-resolutionoceancirculationmodel. Results: Thenumericalsimulationresultsshowthatthethree-dimensionaltidalcurrentfieldintheBeibuGulfhasobviousdifferencesinthedistributionandstrengthoftidalcurrentsindifferentregions.AlongthewesterncoastoftheGulf,tidalcurrentsaregenerallyweak,withamaximumspeedoflessthan0.5m/sinmostare