简介：TheChangjiangRiverDeltaisadeltaoftremendousscalewhichisformedunderthecontroloftideandtidalcurrents.ThestudyontheroleoftideandtidalcurrentsintheprocessofformationanddevelopmentoftheChangjiangRiverDeltacanprovideatypicalexamplefortheocean-continentinteractionprocessintheeastareaofourcountry.ThetideandtidalcurrentsintheBohaiSea,YellowSeaandEastChinaSeaatthepost-glacialtransgressionmaximumaresimulated,thesedimenttransportfieldinthePaleo-ChangjiangRiverEstuary(PCRE)anditsperipheralareaatthattimeiscalculated,andtheseabederosion/accretionpatternisobtainedaccordingtothedivergenceofsedimenttransportrate.Theresultsshowthatadistinctivewavebellyofstandingtidalwaveexistedatthepost-glacialtransgressionmaximumandthewavebellylinesprotrudedseawardsfromthewavebellypointinthemouthofthePCRE.Underthewavebellycontroltidalcurrentsconvergetoordivergefromthewavebell

简介：RelativerolesofEkmantransportandEkmanpumpingindrivingsummerupwellingintheSouthChinaSea(SCS)areexaminedusingQuikSCATscatterometerwinddata.ThemajorupwellingregionsintheSCSarethecoastalregionseastandsoutheastofVietnam(UESEV),eastandsoutheastofHainanIsland(UESEH),andsoutheastofGuangdongprovince(USEG).ItisshownthattheEkmantransportduetoalongshorewindsandEkmanpumpingduetooffshorewindstresscurlplaydifferentrolesinthethreeupwellingsystems.InUESEV,EkmanpumpingandEkmantransportareequallyimportantingeneratingupwelling.TheEkmantransportincreaseslinearlyfrom0.49SvinMayto1.23SvinAugust,whiletheEkmanpumpingincreasesfrom0.36to1.22Svduringthesameperiod.InUESEH,themeanestimatesofEkmantransportandEkmanpumpingare0.14and0.07Sv,respectively,indicatingthat33%ofthetotalwind-drivenupwellingisduetoEkmanpumping.InUSEG,themeanEkmantransportis0.041SvwiththepeakoccurringinJuly,whileEkmanpumpingismuchsmaller(0.003onaverage),indicatingthattheupwellinginthisareaisprimarilydrivenbyEkmantransport.Inthesummersof2003and2007followingElNio-SouthernOscillation(ENSO)events,bothEkmantransportandEkmanpumpingdecreaseinUESEVduetotheabnormallyweaksouthwestmonsoon.Duringthesameevents,however,EkmantransportisslightlyenhancedandEkmanpumpingisweakenedinUESEHandUSEG.

简介：在西北太平洋(NWP)形成的热带气旋(TC)能有时穿过华南海(SCS)。在在11月的SCS的TC轨道在1980前与那些相比在1980以后被转移到北方，这被发现。数据分析和数字模拟证明在SCS温暖的表面可以更向北方贡献这移动。温暖在西北的SCS生产一个气旋的空气发行量异例并且一联系在驾驶TC到北方的中央SCS南方。