简介：Basedonthetraditionalwayofabalonebreeding,thetechnologicalprocessofindustrialabalonebreedingsuitableforthecoastalareasofsouthernChinahasbeendeveloped.Theprocessissimpleandeasytohandle,andresultsinahighyieldofyoungabalonesafterbeingapplied.

简介：在过去20一，在Beibu海湾的海湾规模发行量通常被接受了被一个风压力或密度坡度驱使。然而，基于被观察验证的一个三维的baroclinic模型使用三个敏感实验，形成机制被揭示：在北Beibu海湾的发行量被季风风在整个一年触发；而南部的海湾发行量被季风风和华南海(SCS)驾驶在冬季和夏天的循环分别地。热流动和潮汐的泛音的力量在力量和范围，以及本地发行量结构，而是这些因素没影响的发行量上有强壮的效果在Beibu海湾的主要发行量结构。在另一方面，因为季节的thermocline层被热的输入产生以便在上面的热水和更低的冷水之间的垂直混合被堵住，没有热流动的力量，Beibu海湾冷水团(BGCWM)将消失。另外，在北海湾的导致风的气旋的旋回对BGCWM的存在有利。然而，没有潮汐的泛音的力量，BGCWM的范围区域稍微被增加。当模型被强迫的每月平均的表面驾驶时，发行量结构被改变到某程度，和几乎百分之百向外扩大的BGCWM的范围区域，暗示在Beibu海湾的发行量和水质量对表面力量的时间的决定的有的强壮的回答。

简介：Thepurposeofthisstudyistoinvestigatetheeffectivenessofmulti-tunedmassdampers(MTMD)onmitigatingvi-brationofanoffshoreoilplatformsubjectedtooceanwaveloading.Anoptimaldesignmethodisusedtodeterminetheop-timaldamperparametersunderoceanwaveloading.TheforceonthestructureisdeterminedbyuseofthelinearizedMorisonequation.InvestigationonthedeckmotionwithandwithoutMTMDonthestructureismadeunderdesigncondi-tions.TheresultsshowthatMTMDwiththeoptimizedparameterssuppresstheresponseofeachstructuralmode.ThesensitivityofoptimumvaluesofMTMDtocharacteristicwaveparametersisalsoanalyzed.ItisindicatedthatasingleTMDonthedeckofaplatformcanhavethebestperformance,andthesmallthedampingvalueofTMD,thebetterthevibrationcontrol.

简介：ThecirculationofYellowSeaColdWaterMass(YSCWM)intheSouthernYellowSeaisinvestigatedusingadiagnostic2DMITgcmmodel.Theresolutionofthecomputationalgridis900minthehorizontaland2mintheverticalwhereaninitialtemperaturedistributioncorrespondingtoatypicalmeasuredYellowSeaColdWaterMasswasapplied.TheexistenceofYSCWMthatcausesfluiddensitydifference,isshowntoproducecounter-rotatingcyclonichorizontaleddiesinthesurfacelayer:theinneroneisanti-cyclonic(clockwise)andrelativelyweaker(8–10cms-1)whiletheouteroneiscyclonic(anti-clockwise)andmuchstronger(15–20cms-1).ThisresultisconsistentwiththesurfacepatternobservedbyPangetal.(2004),whohasshownthatamesoscaleanti-cycloniceddy(clockwise)existsintheupperlayerofcentralsouthernYellowSea,andabasin-scalecyclonic(anticlockwise)gyreliesoutsideoftheanti-cycloniceddy,basedonthetrajectoriesanddriftingvelocitiesof23drifters.Belowthethermocline,thereisananti-cyclonic(clockwise)circulation.ThiscomplexcurrenteddysystemisconsideredtobecapableoftrappingsuspendedsedimentsanddepositingthemnearthefrontbetweenYSCWMandthecoastalwatersofftheSubeicoast,providinganexplanationonthesedimentdepthandsizedistributionofmudpatchesintheSouthernYellowSea.Moreover,sensitivetestscenariosindicatethatvariationsofbottomfrictiondonotsubstantiallychangethemainfeaturesofthecirculationstructure,butwillreducethebottomcurrentvelocity,increasethesurfacecurrentvelocityandweakentheupwellingaroundthefrontalarea.

简介：ThewaveCoriolis-Stokes-Force-modifiedoceanmomentumequationsarereviewedinthispaperandthewaveStokestransportispointedouttobepartoftheoceancirculations.UsingtheEuropeanCentreforMedium-RangeWeatherForecasts40-yearreanalysisdata(ERA-40data)andtheSimpleOceanDataAssimilation(SODA)version2.2.4data,themagnitudeofthistransportiscomparedwiththatofwind-drivenSverdruptransportanda5-to-10-precentcontributionbythewaveStokestransportisfound.Bothtransportsarestrongerinborealwinterthaninsummers.Thewaveeffectcanbeeithercontributionorcancellationindifferentseasons.ExaminationwithKuroshiotransportverifiessimilarseasonalvariations.Theclarificationoftheefficientwaveboundaryconditionhelpstounderstandtheroleofwavesinmasstransport.Itactsassurfacewindstressandcanbefunctionaldowntothebottomoftheageostrophiclayer.Thepumpingvelocitiesresultingfromwave-inducedstressarezonallydistributedandaresignificantinrelativelyhighlatitudes.Furtherworkwillfocusonthemodelperformanceofthewave-stress-changed-boundaryandtheroleofswellsintheeasternpartoftheoceans.

简介：Multi-beambathymetryandseismicsequencesurveysinthenorthernslopeoftheSouthChinaSearevealdetailedgeomorphologyandseismicstratigraphycharacteristicsofcanyons,gullies,andmassmovements.ModerncanyonsandgulliesareroughlyelongatedNNW–SSWwithU-shapedcrosssectionsatwaterdepthsof400–1000m.Massmovementsincludeslidecomplexes,slidescars,anddebris/turbidityflows.SlidecomplexesandslidescarsareorientedintheNE–SWdirectionandcoveranareaofabout1790and926km2,respectively.Thedebris/turbidityflowsdevelopedalongthelowerslope.Adetailedfaciesanalysissuggeststhatfourseismicfaciesexist,andthelateCenozoicstratigraphyabovetheacousticbasementcanberoughlysubdividedintothreesequencesseparatedbyregionalunconformitiesinthestudyarea.Theoccurrenceofgashydratesismarkedbyseismicvelocityanomalies,bottom-simulatingreflectors,gaschimneys,andpockmarksinthestudyarea.Seismicobservationssuggestthatmoderncanyonsandmassmovementsformedaroundthetransitionbetweenthelastglacialperiodandthecurrentinterglacialperiod.Thepossibleexistenceanddissociationofgashydratesandtheregionaltectonicsettingmaytriggerinstabilityandmassmovementsontheseafloor.Canyonsmaybethefinalresultofgashydratedissociation.Ourstudyaimstocontributenewinformationthatisapplicabletoengineeringconstructionrequiredfordeep-waterpetroleumexplorationandgashydratesurveysalonganymarginalsea.

简介：这篇评论文章在大气、海洋的研究与进化的全面历史的评论和各种各样的密度表面的申请开始。Thebackground为中立密度想法的出生提供一个基础。注意从海水的状态的方程的非线性对中立密度表面概念的发展被给予。中立密度表面的定义和性质是当摆平的快活频率N~2是零时，从海水和快活频率的状态的方程发展了详细被描述，稳定性的一个中立状态。以便把中立密度表面用于中间的水团分析，这评论也详细描述它的实际海洋学的应用程序。印射的技术第一次集中于定期在这评论使用gridded数据。一根脊梁和肋骨框架怎么被设计从在世界的海洋扔并且首先印射全球中立表面的一本参考书充实，被考察。几印射的中立密度表面为每世界海洋表现为例子。Thewater团性质在每海洋被分析在中间深度。中立密度表面的特征与潜在的密度表面的那些相比。