简介：AnintegratedinvestigationwascarriedoutduringlateApriltolateMayof2014inthecoastalareaofSouthJiangsuProvincetounderstandtheearlydevelopmentofgreentideintheYellowSeaanddiscoverthetemporalandspatialdistributionofgreenalgalmicro-propagulesandmacroalgaeattheearlystageofgreentide.Theresultsshowedthatgreenalgalmicro-propagulesdistributedinallstationsfromlateApriltolateMay,andmicro-propagulesofhighdensity(>300ind.L?1)concentratedintheadjacentPorphyraaquaculturearea.Floatingmacroalgaewereinitiallyobservedinthenorthernsurveyareas,andincreasedgradually.ThedominantspecieswasU.proliferainthefloatingmacroalgae,rangingbetween90%and100%.Theseawatersurfacetemperatureandsalinityintheabovementionedtimeperiodweresuitableforthegrowthofmacroalgae.ThisworkcanhelpgovernmenttostrengthenmanagementtoreducethebloomsofmacroalgaeinthecoastalareaofSouthJiangsuProvinceandalsofacilitatethedecision-makingformanagersattheearlystageofgreentide.

简介：TosolvethenumericaldivergenceproblemofthedirecttimedomainGreenfunctionmethodforthemotionsimulationoffloatingbodieswithlargeflare,atimedomainhybridRankine-Greenboundaryelementmethodisproposed.Inthisnumericalmethod,thefluiddomainisdecomposedbyanimaginarycontrolsurface,atwhichthecontinuousconditionshouldbesatisfied.ThentheRankineGreenfunctionisadoptedintheinnerdomain.ThetransientfreesurfaceGreenfunctionisappliedintheouterdomain,whichisusedtofindtherelationshipbetweenthevelocitypotentialanditsnormalderivativefortheinnerdomain.Besides,thevelocitypotentialatthemeanfreesurfacebetweenbodysurfaceandcontrolsurfaceisdirectlysolvedbytheintegrationscheme.Thewaveexcitingforceiscomputedthroughtheconvolutionintegrationwithwaveelevation,byintroducingtheimpulseresponsefunction.Additionally,thenonlinearFroude-Krylovforceandhydrostaticforce,whichiscomputedundertheinstantaneousincidentwavefreesurface,aretakenintoaccountbythedirectpressureintegrationscheme.Thecorrespondingnumericalcomputercodeisdevelopedandfirstusedtocomputethehydrodynamiccoefficientsofthehemisphere,aswellasthetimehistoryofashipwithlargeflare;goodagreementisobtainedwiththeanalyticalsolutionsaswellastheavailablenumericalresults.ThenthehydrodynamicpropertiesofaFPSOarestudied.Thehydrodynamiccoefficientsagreewellwiththeresultscomputedbythefrequencymethod;theinfluenceofthetimeintervalandthetruncatedtimeisinvestigatedindetail.

简介：ThederivationofGreenfunctioninatwo-layerfluidmodelhasbeentreatedindifferentways.Inatwo-layerfluidwiththeupperlayerhavingafreesurface,thereexisttwomodesofwavespropagatingduetothefreesurfaceandtheinterface.ThispaperisconcernedwiththederivationofGreenfunctionsinthethreedimensionalcaseofastationarysourceoscillating.Thesourcepointislocatedeitherintheupperorlowerpartofatwo-layerfluidoffinitedepth.Thederivationiscarriedoutbythemethodofsingularities.Thismethodhasanadvantageinthatitinvolvesrepresentingthepotentialasasumofsingularitiesormultipolesplacedwithinanystructuresbeingpresent.Furthermore,experienceshowsthatthesystemsofequationsresultedfromusingasingularitymethodpossessexcellentconvergencecharacteristicsandonlyafewequationsareneededtoobtainaccuratenumericalresults.Validationisdonebyshowingthatthederivedtwo-layerGreenfunctioncanbereducedtothatofasinglelayeroffinitedepthorthattheupperGreenfunctioncoincideswiththatofthelower,foreachcase.Theeffectofthedensityontheinternalwavesisdemonstrated.Also,itisshownhowthesurfaceandinternalwaveamplitudesarecomparedforboththewavemodes.Thefluidinthiscaseisconsideredtobeinviscidandincompressibleandtheflowisirrotational.

简介：格林macroalgaeChaetomorphaaerea和C。linum分类地被糊涂。在这份报纸，我们试试词法、分子的分析分开这二种。C。aerea和C。linum能与词法characteritics被区分开来，例如复叶尺寸，房间尺寸和形状，他们的吝啬的长度/宽度比率(LWR)，和房间围收缩。C的Thalli。aerea由顶往底地稀释与在上面的部分的直径270-500m，在中间的部分的160-360m，在基础部分的100-160m。为上面的部分，房间的长度是不到他们的直径。房间墙通常在隔膜压缩，它透明或无色并且给细丝beaded外观。相反，C的thalli。linum经常在一样的个人，以内有90-300m的一条经常的直径房间墙通常不压缩，房间是圆柱的或塑造的桶。LWR比C的大。aerea。结果证明在二种之间的pairwise距离为它的区域是为18SrRNA基因和53.5%-54.3%的3.6%-3.7%。在发展史，他们在远clades散布，它在分子的水平证实基因分叉。另外，词法数据显示C的那条细丝直径。linum样品是高度可变的，从90m到300m。然后这二种能被看作分开种类。

简介：自从2007，Ulvaprolifera在黄海引起的巨大的绿潮每夏天发生了并且为本地政府引起了巨大的经济损失。Subei(诺思江苏省，中国)浅与它的大规模Porphyra水产业，被认为是U的最重要的来源。为绿潮的prolifera。揭示在西南的黄海在这个区域，水流的特征，温度，咸度和推迟的微粒物质(SPM)漂浮和漂流的水藻的物理机制，特别在Subei浅，被学习。光线的沙的地形学在Subei隆起浅抑制水流和原因网的特征纵、纬度的运动。纵的网运动是能带U的一个主导的动态因素。prolifera进近海流水。被水藻在光合作用期间生产的气体的数量决定是否U。在它从Porphyraaquacultural仪器被处理进水以后，prolifera能漂浮很好在海表面上。Subei浅被高混浊描绘，它能导致重要轻变细并且和U的快活影响光合作用。水里的prolifera。根据从2012的卫星遥感数据，在Subei的three-month-averaged表面SPM(4月，5月和6月)浅是140mg/dm3,和Subei的北方浅(34.5的北方

简介：针对海洋中尺度涡对水声传播的影响，利用中尺度涡区的历史水文实测数据提取涡旋强度，空间尺度等中尺度涡特征参数，建立了海洋中尺度涡理论计算模型。运用MMPE水下声场模型仿真试验研究了涡旋性质、强度和位置、声源频率和置放深度对声传播特性的影响。结果表明：暖涡使得会聚区的位置“后退”，会聚区宽度增加；冷涡使得会聚区的位置“前移”，会聚区宽度减小。涡旋的强度越大，“前移”或“回退”的效应越显著。

简介：Laminariajaponica,Undariapinnatifida,Ulvalactuca,GrateloupiaturuturuandPalmariapalmataaresuitablespeciesthatfittherequirementsofaseaweed-animalintegratedaquaculturesystemintermsoftheirviablebiomass,rapidgrowthandpromisingnutrientuptakerates.Inthisinvestigation,theresponsesoftheoptimalchlorophyllfluorescenceyieldofthefivealgalspeciesintumbleculturewereassessedatatemperaturerangeof10~30℃.TheresultsrevealedthatUlvalactucawasthemostresistantspeciestohightemperature,withstanding30℃for4hwithoutapparentdeclineintheoptimalchlorophyllfluorescenceyield.WhilethearcticalgaPalmariapalmatawasthemostvulnerableone,showingsignificantdeclineintheoptimalchlorophyllfluorescenceyieldat25℃for2h.Thecold-waterspeciesLaminariajaponica,however,demonstratedstrongabilitytocopewithhighertemperature(24~26℃)forshortertime(within24h)withoutsignificantdeclineintheoptimalchlorophyllfluorescenceyield.Grateloupiaturuturushowedageneraldecreaseintheoptimalchlorophyllfluorescenceyieldwiththerisingtemperaturefrom23to30℃,similartothetemperatekelpUndariapinnatifida.Changesofchlorophyllfluorescenceyieldsofthesealgaewerecharacterizeddifferentlyindicatingtheexistenceofspecies-uniquestrategytocopewithhighlight.Measurementsoftheoptimalchlorophyllfluorescenceyieldaftershortexposuretodirectsolarirradiancerevealedhowlongtheseexposurescouldbewithoutsignificantphotoinhibitionorwithpromisingrecoveryinphotosyntheticactivities.SeasonalpatternofalternationofalgalspeciesintankcultureintheNorthernHemisphereatthelatitudeof36°Nwasproposedaccordingtothesebasicmeasurements.

简介：这研究分析社区结构，水藻的数量变化和重要环境因素的效果并且在调查区域估计依附的绿水藻的全部的生物资源。从Porphyrayezoensis水产业椽子上的依附的绿水藻的调查的学习使用数据和关于到在Subei的2011年4月的从2010年10月的环境因素的数据变浅。椽子上的依附的绿水藻包括了Ulvaprolifera，Capsosiphongroenlandicus，U。linza，U。intestinalis，U。clathrata，和U。compressa。依附的绿水藻的生物资源变化展出了一根转换抛物线：生物资源最高(14898t)在4月，并且第二最高(2034t)在11月；它在2月(仅仅729t)是最低的并且从三月严厉地增加了到4月。种类差异在季节之中显著地不同。在9月和10月，什么时候P。yezoensis水产业椽子开始被建立，，依附的绿水藻从12月有高生物多样性到下一2月，，许多绿水藻种类在椽子上共存了生物资源是低的，并且从三月到4月作为严厉地增加的生物资源，种类差异落下到最小。在期间这次，C。groenlandicus与直到80%的最大的生物资源比例是显然主导的，当时U。prolifera比例指数地增加了到20%～40%。水温度在生物资源和依附的绿水藻的种类继任上有直接调整效果。社区动力学的评价和绿水藻的生物资源提供了需要在南部的黄海追踪大规模绿潮的起源的证据。

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