風(fēng)暴潮預(yù)報模式理論及應(yīng)用研究.pdf

1、天津大學(xué)碩士學(xué)位論文Y848190風(fēng)暴潮預(yù)報模式理論及應(yīng)用研究ResearchonaStormTidePredictionModelanditsApplication學(xué)科專業(yè)：港口、海岸及近海工程研究生：李艷蕓指導(dǎo)教師：李紹武副教授天津大學(xué)建筑工程學(xué)院二零零五年六月ABSTRACTThechangeofwaterlevelisinfluencednotonlybyastronomictidebutalsobymeteorological

2、factorsintheshelfzoneTyphoon，amongothers，oftenleadstosignificantsetuporsetdownofwaterlevelinthenearshorezoneandbringsdisastrousinfluencesonthepeopleincoastalzoneChinaisoneofthecountriesthatareseriouslyinfluencedbystormti

3、deThus，developmentofastormtidenumericalmodelthatisfittothedynamicconditionsofChineseoceanisofgreatimportanceInthispaper，anasffonomictidepredictionmodelisfirstestablishedbyusinga3一DoceanhydrodynamicmodeICOHERENSfortheBoha

4、iSearegionByusingtheprovidedharmonicanalysistoolandsomecollectedmeasurementsoftideconstituentparanaetersofseveraltidestations，thetideparametersofthefourtideconstituentsareobtainedthrou曲tryand—errormethodThedistributionso

5、fatmosphericpressureandwindvelocityfieldarecomputedbyusingsomecoursedataofatmosphericpressureandwindaccordingtoasimpletheoreticalformulaTheCOHERENSmodelCanmodelnotonlytideprocessinCartesiancoordinatesysteminsmallsearegio

6、nbutalsotidewavebyinsphericalcoordinatesysteminlargeoceanzoneBecausetheverticalcoordinateistransformedbyaotransformation，theboundaryconditionsofbottomandsurfacearesimplifiedThestressinmomentumequationishandledbyusingBous

7、sinesqassumptionPressuretermsarehandledbyusingstaticwaterpressureassumptionInsolvingtheequations，ArakawaCgridisusedinhorizontaldirectionGravitywavewaterleveliscomputedbyusingbarotropicmodeBaroclinicmodeisusedtocalculated

8、depthresolvedphysicalquantitiesThebarotropicmodeusesshortertimestep，whilethebaroclinicmodeuseslongeroneAllhorizontalderivativesareexpressedinexplicitschemewhileverticaltermsareexpressedinimplicitschemeTheadvectiontermsar

9、ecalculatedbyTVDschemewjtllsupperbeelimitingfunctionTheestablishedmodelisappliedtosimulatetheincreasingofwaterlevelinfluencedbyNo9712tropicsstormovertheBohaiSearegionThesimulatedwaterlevelprocessesarecomparedwiththemeasu

10、redwaterlevelprocessesofTangguandQinhuangdaotidestationTheresultsindicatethatthetrendsagreeandthemodelisthusprovedtobeapplicableinthestormtidepredictionKEYWORDS：COHERENSmodel；ArakawaCgrid：astronomictide；9712tropicstormti