简介：根据一系列重要历史的地图，即，华南海岛，Nansha岛，Zhongsha岛，Xisha岛，Yongxing岛和Shidao岛的地点地图，并且太平天国的岛(在1946由中华民国的内部的部的领土的管理部门转存)，并且中华民国的管理区域地图在1948出版了，包围华南海岛的击破的线在华南代表瓷器海边界它是连接与的两个，和延期，中国的陆地边界。在当稳固的线被用来代表陆地boundarya时，击破的线被用来代表水边界的那时间，通用方法在然后国际性地被认出的地图使用了。上述观察在为在华南海区域上的国际海上的定界线是有用的华南海提供瓷器海边界的历史、科学的证据。

简介：BasedonthesimulationwiththeOcean-AtmosphereCoupledModelCCSMandOceanModelPOPunderthegreenhousegasemissionscenariooftheIPCCSRESA2(IPCC,2001),andontheearthcrustsubsidenceandglaciermeltingdata,therelativesealevelchangeisobtainedalongthecoastofChinainthe21stcentury.UsingtheSRTMelevationdatathesubmergenceofcoastallowlandiscalculatedundertheextremewaterlevelwitha100-yearreturnperiod.Thetotalfloodingareasare98.3×103and104.9×103km2for2050and2080,respectively.Forthethreeregionsmostvulnerabletoextremesealevelrise,i.e.,thecoastofBohaiBay,theYangtzeRiverDeltatogetherwithneighboringJiangsuProvinceandnorthernZhejiangProvince,andthePearlRiverDelta,thefloodedareasare5.0×103,64.1×103and15.3×103km2in2050and5.2×103,67.8×103and17.2×103km2in2080,respectively.

简介：Thispaperreportstheabsorption,accumulation,distributionandcycleofCu,Pb,Zn,CrandNiinS.apetala+S.caseolaris,mangrovecommunityatFutianMangroveNatureReserveofShenzhen,TheCu,Pb,Zn,CrandNicontentsinforestsoilincreasefrombottomtosurfacelayers,andthestorageofthefiveheavymetalsinthesurfacelayer(depth0-30cm)isZn>Pb>Ni>Cr>Cu.TheconcentrationabilityisS.caseolaris>S.apetala>K.candel.TheexistingaccumulationofCu,Pb,Zn,CrandNiinthecommunityis23019.63μg/m^2,23429.66μg/m^2.177870.42μg/m^2,6835.80μg/m^2,and12995.22μg/m^2,respectively.Theannualabsorptionis6592.57μg/m^2,2664.80μg/m^2,23123.56μg/m^2,853.24μg/m^2,and1990.95μg/m^2,respectively.Theannualreturnis3179.50μg/m^2,1300.65μg/m^2,7401.31μg/m^2,398.99μg/m^2,and646.20μg/m^2respectively.TheannualnetretentionaccumulationofCu,Pb,Zn,CrandNiinthecommunityis3413.07μg/m^2,1364.15μg/m^2,15722.25μg/m^2,454.25μg/m^2,and1344.75μg/m^2,respectively,TheturnoverperiodsofCu,Pb,Zn,CrandNiare8,19,15,18and21years,respectively.

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简介：AbundantevidencesofhighersealevelsfromJiangsuandFujiancoastshaveprovedamarinetransgressioneventduring30–40kaBP,suggestingthattherewasastagewithhighsealevelandawarmclimatewhenicesheetsshrankintheNorthernHemisphere.Thedurationof30–40kaBPspannedaperiodinthelateMarineIsotopeStage3(MIS3)andwasinnatureaninterstadialepochduringtheLastGlacialperiodoftheQuaternary.Differentfromtheglacialperiodwithacoldclimate,thismarinetransgressionconsideredasapenultimatehighersealevelduringtheQuaternaryremainsapuzzlethatwhytheevidenceiscontrarytotheQuaternaryglacialtheory.Itisimportanttounderstandsealevelrisefortheseareassensitivelyrespondingtotheglobalchangesinthefuture.Torecognizethekeyissuesonsealevelchanges,theeustaticsealevel(H_S)wasdefinedastheglaciation-climateforcedsealevels,andtherelativesealevelchange(H_R)wasdefinedasthatasealevelrecordwaspreservedinsedimentthatexperiencedmultiplesecondaryactionsoflandandseaeffects.Onthebasisasdefinedabove,weconstructedmulti-levelmodelsofclimate-drivenglacio-eustaticchangesandland-seasystems.Byintegratingdatasetsfromeightboreholecoresandprescribingtheboundaryconditions,wesimulatedthechangesofHSandHRintheEastChinaSeaandsouthernYellowSeaareasinthelateMIS3.Themarinetransgressionstratafromtheboreholecoredatawasidentifiedatca.30mbelowpresentsealevelasaresultofthecollectiveinfluenceoficemeltingwater,neotectonicsubsidence,sedimentcompactionandterrestrialsedimentfillingsinceca.35kaago,whereasthesimulatedrelativesea-levelsturnedouttobe–26.3––29.9ma.s.l.Thesmallerrorinvolvedinthesimulationresultsof±(2.5–4.5)mdemonstratedthecredibilityoftheresults.OurresultsindicatedthatsealevelchangeinthelateMIS3wasdominatedbyglacialeffects,inwhichtheeustaticsea-levelwasbetween–19.2�

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简介：ＳｔｕｄｙｏｎｔｈｅｃａｒｂｏｎｆｌｕｘｉｎｔｈｅＳｏｕｔｈＣｈｉｎａＳｅａ￥ＨａｎＷｕｙｉｎｇ；ＬｉｎＨｏｎｇｙｉｎｇａｎｄＣａｉＹａｎｙａ（ＲｅｃｅｉｖｅｄＭａｒｃｈ５，１９９５；ａｃｃｅｐｔｅｄＯｃｔｏｂｅｒ４，１９９５）Ａｂｓｔｒａｃｔ：Ａｃ...

简介：AnimprovedprocedureforextractingtheradiationalS2tidefromanalyzedS2ispresentedinthispaper.Themajorimprovementisthatthenonlinearconstituentsareeliminatedfromtheanalyzedprincipalsemidiurnaltidesonthebasisofthe"credoofsmoothness"ofadmittancebeforeusingtheproceduregivenbyZetler.ThesemidiurnalradiationaiS2tidesfor42stationsalongChina’scoastsarecalculatedusingthemethodpresentedinthispaper,and,forcomparison,theresultsfromZetler’smethodarealsogiven.Inaddition,theradiationalS2tidesfor10stationsareanalyzedwiththeresponsemethod.Theresultsshowthatthemeanamplituderatio(radiationaltogravitational)is0.17,themeanphasedifference(radiationalminusgravitational)is119°forChina’scoasts.

简介：Climatologyoftheisothermallayerdepth(ILD)andthemixedlayerdepth(MLD)hasbeenproducedfromin-situtemperature-salinityobservationsintheEastChinaSea(ECS)since1925.ThemethodsappliedontheglobalareusedtocomputetheILDandtheMLDintheECSwithatemperaturecriterionΔT=0.8℃fortheILD,andadensitycriterionwithathresholdΔσθcorrespondingtofixedΔT=0.8℃fortheMLD,respectively.WiththederivedclimatologyILDandMLD,themonthlyvariationsofthebarrierlayer(BL)andthecompensationlayer(CL)intheECSareanalyzed.TheBLmainlyexistsintheshallowwaterregionoftheECSduringApril-Junewiththicknesslargerthan15m.FromDecembertonextMarch,theareaalongtheshelfbreakfromnortheastofTaiwanIslandtothenortheastECSischaracterizedbytheCL.Twokindsofmaintemperature-salinitystructuresoftheCLinthisareaaregiven.

简介：ThispaperpresentsactualityofinvestigationandstudyofthecrustalstructurecharactersofEastChinaSeaathomeandabroad.Basedonlotsofinvestigationandstudyachievementsandthedifferenceofthecrustalvelocitystructurefromwesttoeast,theEastChinaSeaisdividedintothreeparts-EastChinaSeashelfzone,OkinawaTroughzoneandRyukyuarc-trenchzone.TheEastChinaSeasheffzonemostlyhasthreevelocitylayers,i.e.,thesedimentblanketlayer(thevelocityis5.8-5.9km/s),thebasementlayer(thevelocityis6.0-6.3km/s),andthelowercrustallayer(thevelocityis6.8-7.6km/s).SotheEastChinaSeashelfzonebelongstothetypicalcontinentalcrust.TheOkinawaTroughzoneislocatedatthetransitionalbeltbetweenthecontinentalcrustandtheoceaniccrust.Itstillhasthestructuralcharactersofthecontinentalcrust,andnoformationoftheoceaniccrust,butthecrustofthecentraltroughhasbecometothinningdown.TheRyukyuarc-trenchzonebelongstothetransitionaltypecrustasawhole,buttheoceansideofthetrenchalreadybelongstotheoceaniccrust.AndthenorthwestPhilippineBasintotheeastoftheRyukyuTrenchabsolutelybelongstothetypicaloceaniccrust.

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简介：塑造耳朵的热前面(ESTF)，由黄海温暖的水流(YSWC)和山东沿海的水流(SCC)的集中形成了，在冬季是在黄海(YS)的很重要的海洋的现象。在所有表明的situ大小和分析数据集，ESTF在1950s-1990s，和一个类似的变弱趋势期间一直在变弱，这是也在YS上在冬季季风发现。数字实验证明变弱冬季季风能沿着瓷器海岸和向南方的异常水流与向北方异常的水流在多十的timescale上在YS导致异常发行量在里面中央对季节的吝啬的循环YSgenerally相反。异常发行量引起YSWC和SCC的减速，并且因此削弱ESTF。因为ESTF在地区性的海洋动力学和由空至海的相互作用起重要作用，它变弱在冬季在YS为地区性的气候有重要含意。

简介：Analysisofmagneticpropertiesofmarinesurfacesedimentshasbeengraduallyprovedtobeoneoftheeffectivemeansforresearchingthesourceofmarinesediments.Inthispaper,samplesfrom39sitesinLiaodongBaywerecollectedtoanalyzethemagneticcharacteristicsofthesurfacesediments.MagneticstudyindicatedthatthesurfacesedimentsoftheLiaodongBayarecharacterizedbymagnetite.InthemiddleandeasternpartandthesouthwestcorneroftheBay,themainmagneticgrainswerecoarsemulti-domainandpseudo-single-domainparticles,whileinotherareassingle-domainandpseudo-single-domainparticlesconstitutethemajority.Basedongrainsizeandenvironmentalmagnetismdata,thecontentofmagneticmineralshasapositivecorrelationwiththehydrodynamicenvironmentwhenthemagneticmineraldomainisfiner.However,thecontentofmagneticmineralsisinacomplexrelationshipwiththehydrodynamicenvironmentinthecoarsemagneticdomainofmagneticmineralsfoundincentralLiaodongBayandplacesoutsidetheFuzhouBay,implyingthatthestronghydrodynamicenvironmentacceleratesthesedimentationofcoarsemagneticminerals.Basedongeographicpatternofmagneticproperties,itcanbeinferredthatthemainprovenanceofthesurfacesedimentsoftheLiaodongBayisthesurroundingrivers,andthecomparativeanalysisindicatesthatYellowRiversubstancesmaybealsoexistinthebay.

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简介：Carbonmonoxide(CO)playsasignificantroleinglobalwarmingandatmosphericchemistry.GlobaloceansarenetnaturalsourcesofatmosphericCO.COatsurfaceoceanisprimarilyproducedfromthephotochemicaldegradationofchromophoricdissolvedorganicmatter(CDOM).Inthisstudy,theeffectsofphotobleaching,temperatureandtheorigin(terrestrialormarine)ofCDOMontheapparentquantumyields(AQY)ofCOwerestudiedforseawatersamplescollectedfromJiaozhouBay.Ourresultsdemonstratthatphotobleaching,temperatureandtheoriginofCDOMstronglyaffectedtheefficiencyofCOphotoproduction.Theconcentration,absorbanceandfluorescenceofCDOMexponentiallydecreasedwithincreasinglightdose.Terrestrialriverineorganicmattercouldbemorepronetophotodegradationthanthemarinealgae-derivedone.TherelationshipsbetweenCOAQYandthedissolvedorganiccarbon-specificabsorptioncoefficientat254nmforthephotobleachingstudywerenonlinear,whereasthoseoftheoriginalsampleswerestronglylinear.Thissuggeststhat:1)terrestrialriverineCDOMwasmoreefficientthanmarinealgae-derivedCDOMforCOphotoproduction;2)aromaticandolefinicmoietiesoftheCDOMpoolwereaffectedmorestronglybydegradationprocessesthanbyaliphaticones.WatertemperatureandtheoriginofCDOMstronglyaffectedtheefficiencyofCOphotoproduction.ThephotoproductionrateofCOinautumnwasestimatedtobe31.98μmolm-2d-1andthetotalDOCphotomineralizationwasequivalentto3.25%-6.35%ofprimaryproductioninJiaozhouBay.OurresultsindicatethatCOphotochemistryincoastalareasisimportantforoceaniccarboncycle.

简介：OnthebasisofthedataofoceanographicsurveyintheEastChinaSeainfourseasonsduring1997～2000(23°30′～33°00′N,118°30′～128°E),thevariationoftotalbiomassanddietbiomassofzooplanktonandtheirspatial-temporaldistributionandrelationshipwiththefishinggroundofEngraulisjaponicusareapproachedandanalyzed.Theresultsshowthattheaveragebiomassis65.32mg/m3infourseasons,autumn(86.18mg/m3)beinggreaterthansummer(69.18mg/m3)greaterthanspring(55.67mg/m3)greaterthanwinter(50.33mg/m3).Theaveragevalueofdietzooplanktonbiomassis40.9mg/m3.Thetrendsofhorizontaldistributionbothinthetotalbiomassandthedietbiomassofzooplanktonaresimilar.Thehighbiomassregion(250～500mg/m3)isverylimited,onlyaccountingfor1%oftheinvestigationarea.SeasonalvariationofthebiomassisveryremarkableinthewestandnorthpartsofEastChinaSeacoastalwaters(29°30′N,125°E).Thehorizontaldistributionofdietzooplanktondependsontheabundancedistributionofcrustacean.ThedistributionofdietzooplanktonisrelatedtothefishinggroundofEngraulisjaponicusandthehigh-densityareaofyoungfishandlarval.Inspring,thecentralfishinggroundofEngraulisjaponicus(＞100kg/h)andthehigh-densityareaofyoungfishandlarval(＞100individualspernet)arelocatedatthesameplaceofhigh-density(100～250mg/m3)areaofdietzooplanktoninthemiddle-southernpartofEastChinaSeaortheedgeofitswaters.

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