对南海主要出流通道的诊断及讨论

276200811JOURNALOFTROPICALOCEANOGRAPHYVol127,No.6Nov.,2008:2008203214;:2008205212:(KZCX22YW2214);ARGO973(2007CB816004);(40776009):(1978),,,,E2mail:dpdong@scsio1ac1cn1,2,1,3,1(1.,510301;2.,100049;3.,510300):,,,,;,,,:;;;;;:P731:A:100925470(2008)0620001205DiagnosticcalculationsanddiscussionsonmainoutflowpassageofSouthChinaSeaDONGDan2peng1,2,ZHOUWei2dong1,YANGYang3,DUYan1(1.KeyLaboratoryofTropicalMarineEnvironmentalDynamics,SouthChinaSeaInstituteofOceanology,CAS,Guangzhou510301,China;2.GraduateUniversityofCAS,Beijing100049,China;3.SouthChinaSeaMarineEngineeringSurveyingCenter,StateOceanicAdministration,Guangzhou510300,China)Abstract:Basedontheconstraintsofmass,heatandsaltconservations,anoptimizedboxmodelisdevel2opedtoidentifythemainoutflowpassageoftheSouthChinaSea.Thephysicalmeaningoftheboxmodelisdescribedindetail.ThediagnosticcalculationsshowsthattheKalimantanStraitisthemainoutflowpas2sagewhichisthemostefficientpathwaytobalancethehugemountofheatfluxandlargeprecipitationgainsinthesurfacelayer.Theresultsareconfirmedbyaninversemethod,inwhichthedetailsofdynam2icsandthermohalinestructuresareconsidered.Optimizationisthemostefficientwaytoestimatetheheatandsaltbudgets.ThestructureofvelocitydistributionacrosstheLuzonStraitisalsorevealedbythein2versemethod.Keywords:boxmodel;optimization;strait;transport;inversemethod;SouthChinaSea,,,,,,(;;)[16][7,8],Metzger[1],Cai[2]Fang[3]Qu[6],,,,27,,,,,,,1111,1COADS[9],7510TW(1TW=1012W)2COADS[9](P)(E)P-E=7114Ggs-1(1Ggs-1=109gs-1),D=26Ggs-1,9714Ggs-1,,112,,(23175N,118100120100E)(1817521175N,120150E)(1212512175N,120150E)(315N,103175113100E)4,3;,4(0250m,250800m,8001500m,1500m),ui(i=1,2,,7),C1C2C3:C1=7i=1iiui+D+P-E=0,(1)C2=7i=1iiuiSi=0,(2)C3=7i=1cpiiTiui+QT=0,(3)i,i,D,PE,Ti,cp,QT,Si,(1)(3)TiSiLevitus[10],0125,33;iLevitus;QTEPCOADS[9],0125;D,[11]26Ggs-1;cp4100J(g)-1,,,,F=7i=1iu2ii,(1)(3)FF,F4,,;,FLagrange,G=F+1C1+2C2+3C3,j(j=1,,3)Lagrange,26:Cj(j=1,,3)3,D+P-EQTcp,iiTiSi,1,La2grange,9G9ui=0,i=1,2,,7,(1)(3)ui(i=1,2,,7)Lagrangej(j=1,,3)1Tab11Valuesofknownquantitiesinequations/ii/Ggcm-1Ti/Si/gkg-1/(i=1)925.621.034.5/(i=2)1601.69.134.4/(i=3)1492.63.934.5/(i=4)1296.72.635.3(i=5)88.623.434.0(i=6)136.621.934.1(i=7)629.227.633.411322,,,,,1126Sv,1133Sv,30214TW9115Ggs-1,;,2Tab12Velocities,volumetransports,heatandsalttransportsthroughallstraitsbyboxmodel,withpositivevaluesdenotingflowingwaterintoSCS//cms-1/Sv/TW/Ggs-1/1.331.24103.942.7/-0.55-0.88-32.1-30.3/-0.89-1.33-21.0-46.0/1.722.2322.878.7-0.12-0.01-1.0-0.4-0.08-0.01-0.9-0.4-2.12-1.33-146.8-44.4:,,,2211Wunsch[12],,[1315],,CO2ADS[9],0125,,(61758125N,116125E),4,21233,4164Sv,Qu[8]3SvFang[3]614Sv,3174Sv;,0145Sv0111Sv;0143Sv44313TW16115Gg,42419TW12618Gg,()3Tab13Volumetransports,heatandsalttransportsthroughallstraitsbyinversemethod,withpositivevaluesdenotingflowingwaterintoSCS/Sv4.64-0.43-0.45-0.11-3.74/TW443.3-41.9-40.1-11.4-424.9/Ggs-1161.5-15.2-15.9-3.6-126.8:3,,,,Qu[5]4Qu3273,,,,(),,,,50m,,75m7153105km2,2111%,2315TW,3113%;,,,:Qu[6],,;Cai[2]Fang[3],;Metzger[1],,,100km,,6ms-1,,350m,,,5,,5(:m)Fig15BottomtopographynearMindoroStrait(unit:m)46:,,,,,,,4,,,,,,:[1]METZGEREJ,HURLBURTHE.CoupleddynamicsoftheSouthChinaSea,theSuluSea,andthePacificOcean[J].JGeophysRes,1996,101:1233112352.[2],,.[J].,2002,20(3):2934.[3]FANGGH,WEIZX,CHOIBH,etal.Interbasinfresh2water,heatandsalttransportthroughtheboundariesoftheEastandSouthChinaSeasfromavariable2gridglobaloceancirculationmodel[J].ScienceinChina:D,2003,(02):149161.[4]FARRISA,WIMBUSHM.Wind2inducedKuroshiointru2sionintotheSouthChinaSea[J].JOceanog,1996,52:771784.[5]QUTD,KIMYY,YAREMCHUKM,etal.CanLuzonStraittransportplayaroleinconveyingtheimpactofENSOtotheSouthChinaSea[J].JClim,2004,17:36443657.[6]QUTD,DUY,SASAKIH.SouthChinaSeathrough2flow:Aheatandfreshwaterconveyor[J].GeophysResLett,2006,33(23),L23617,doi:10.1029/2006GL028350.[7]WYRTKIK.PhysicaloceanographyofthesoutheastAsianwaters[R]//ScientificresultsofmarineinvestigationsoftheSouthChinaSeaandtheGulfofThailand.NAGARe2port,1961,2:195.[8]QUTD,HUMIOM,YAMAGATAT.IntrusionoftheNorthPacificwatersintotheSouthChinaSea[J].JGeo2physRes,2000,105(C5):64156424.[9]WOODRUFFSD,DIAZHF,ELMSJD,etal.COADSrelease2dataandmetadataenhancementsforimprovementsofmarinesurfacefluxfields[J].PhysChemEarth,1998,23:517526.[10]CONKRIGHTME,ANTONOVJI,BARANOVAO.WorldOceanDatabase2001[M].NationalInternalReport16,OceanClimateLaboratoryNationalOceanographicDataCenter,SilverSpring,MD.2002:167.[11],.[J].,1992,11(2):8990.[12]WUNSCHC.ThenorthAtlanticgeneralcirculationwestof50Wdeterminedbyinversemethods[J].RevsGeophysandSpacePhys,1978,16:583620.[13],,.1987[C]//().:,1990:256266.[14],,.[C]().:,1991:220234.[15],,,.2000[J].,2004,26(1):113.5