简介:ThebasicfeaturesofzooplanktoninthewesternwatersofTaiwanStraitINTRODUCTIONTheessayusesthedatafromacomprehensivesurveycarriedou...
简介:Theoperationalclimateforecastsystem(CFS)oftheUSNationalCentersforEnvironmentalPredictionprovidesclimatepredictionsovertheworld,andCFSproductsarebecominganimportantsourceofinformationforregionalclimatepredictionsinmanyAsiancountrieswheremonsoonclimatedominates.Recentstudieshaveshownthat,onmonthly-to-seasonaltime-scales,theCFSishighlyskillfulinsimulatingandpredictingthevariabilityoftheAsianmonsoon.Thehigher-frequencyvariabilityoftheAsiansummermonsoonintheCFSisanalyzed,usingoutputfromaversionwithaspectraltriangulartruncationof126wavesinhorizontaland64sigmalayersinvertical,focusingonsynoptic,quasi-biweekly,andintraseasonaltime-scales.TheonsetprocessesofdifferentregionalmonsooncomponentswereinvestigatedwithinAsia.AlthoughtheCFSgenerallyoverestimatesvariabilityofmonsoononthesetime-scales,itsuccessfullycapturesmanymajorfeaturesofthevariancepatterns,especiallyforthesynoptictime-scale.TheCFSalsocapturesthetimingofsummermonsoononsetsoverIndiaandtheIndo-ChinaPeninsula.However,itencountersdifficultiesinsimulatingtheonsetoftheSouthChinaSeamonsoon.ThesuccessandfailureoftheCFSinsimulatingtheonsetofmonsoonprecipitationcanalsobeseenfromtheassociatedfeaturesofsimulatedatmosphericcirculationprocesses.Overall,theCFSiscapableofsimulatingthesynoptic-to-intraseasonalvariabilityoftheAsiansummermonsoonwithskills.Asforseasonal-to-interannualtime-scalesshownpreviously,themodelisexpectedtopossessapotentialforskillfulpredictionsofthehigh-frequencyvariabilityoftheAsianmonsoon.
简介:与极化单人赛的合成的孔相比,雷达(SAR)想象,完整的测定偏振的SAR图象包含不仅几何、向后散布的特征,而且散布目标的极化特征。因此,测定偏振的SAR在海表面上为油喷洒察觉有更多的优点。作为在油喷洒察觉的关键步,特征抽取直接影响油喷洒辨别的精确性。海油喷洒的测定偏振的特征例如测定偏振的熵,平均散布角度,在完整的测定偏振的SAR图象第一被分析。并且反映在布拉格和镜子的散布信号之间的比例的新测定偏振的参数P被建议。为了为观察multipolarization的油喷洒,系统的比较和分析调查测定偏振的特征的能力,特征根据SIR-C/X-SAR和Radarsat-2获得的完整的测定偏振的SAR图象被提供。在C乐队SAR图象,油流出的实验结果表演能比在L乐队SAR想象在下面的更容易被检测对中等的风速度条件低。而且,它也发现新测定偏振的参数对散布机制的海表面敏感。并且实验结果证明新测定偏振的参数和柱脚高度在C乐队SAR图象为油喷洒察觉比另外的测定偏振的参数更好表现。
简介:Pseudopleuronectesyokamae(Günther)isoneofthemostimportanteconomicfishspeciesinthegenuslivingspeciallyinthenorthwestPacific,andisdistributedinthesouthernareaofthefareastseaofRussia,Japan,Korea,theHuanghaiSea,theBohaiSeaandthenorthernareaoftheEastChinaSea.Usuallytheyliveinnearshorewatersoftheseareasasgeographicsubpopulations.P.yokamaeintheSheathBaybelongstoalocalgroupoftheHuanghai-BohaiSeasubpopulationandisdistributedinthemouthandadjacentwatersofthebayalltheyearround,andthecatchofitsspawninggrouphas
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:NotesOnthefeaturesoftheSSTannualcycleandsurfaceheatbudgetintheSouthChinaSeaINTRODUCTIONTheannualcycleintheoceanandatmospheres...
简介:ThedistributionalfeaturesoftemperatureandsalinityinthenorthernTaiwanStraitshavebeenanalyzedbasedontheCTDdataduringFebruary-March,1998.Thecharacteristicsoftemperatureandsalinityaresummarizedasfollows:(1)thereexistsacoastalwateralongthewesterncoastoftheTaiwanStraits,withlowtemperatureandlowsalinityattheupperlayer;(2)ahightemperatureandhighsalinitywatertongueextendsnortheastwardalongtheeasterncoastoftheTaiwanStrait.
简介:Throughdensifiedsurfacesamplingofforaminiferaandaccurateelevationmeasurementalongthreetransectlinesinopen-coasttidalsalt-marshofJianchuan,particularsalt-marshforaminiferaassemblageswerefound.Thesalt-marshforaminiferaassemblagesaredistributedinwell-definedverticalzonationswithrespecttoelevationandcloselyparallelmarshfloralzonations.Atthetopoftheverticalzonationallforaminiferadisappearabruptlywhichareaccuratelylocatedatthehighesthighwaterdatum.Thisdistributionpatterncanbeusedtorelocateformersealevelsaccurately(toanaccuracyofwithin±5cm).Amodemregionalcriterionofforaminiferaforrelocatingtheformersealevelsinhighresolutioninourcountryisprovided,anddeficienciesofstudyingtheverticalzonationonlyinshelteredcoastsalt-marshabroadarefilledup.
简介:Basedonthedataoftemperatureandsalinityofthe137°Esectioninthewintersandsummersfrom1967to1995,thegeo-strophiccurrentofthesectioniscalculatedandanalyzed,andthedriftingtracksofthesatellitetrackingdriftbuoydistributedonthe144°Esectionarealsoanalyzed.InlightofthesurfacedynamicheightdistributionintheCSKatlas,thispapercomparessomefeaturesoftheSubtropicalCountercurrent,theNorthEquatorialCurrentandtheNorthEquatorialCountercurrent.Themainresultsareasfollows:1.TheSubtropicalCountercurrent,theNorthEquatorialCurrentandtheNorthEquatorialCountercurrentarenotsimplesinglecurrents,buthavetwobranchesormore.Oneofthecommonfeaturesofthethreecurrentsmentionedaboveis"multi-branching"ofthecurrent.2.Thezonaldistributionoftheflowvelocitystructure,thealternateandintermittentoccurrenceoftheeastwardandwestwardflows,withashallowerflowlayerandbelongingtothesurfacefloworsubsurfacef
简介:基于相关矩阵特征向量的目标分解将地物回波复杂的散射过程分解成相互独立的三种单一散射分量:单向散射、双向散射和交叉散射,分别对应各自的目标相关矩阵.目标分解技术降低了散射回波之间的相关性,有利于分析地物散射机理,有助于提高分类精度.对荷兰Flevoland地区全极化数据进行分解,经过试验和相关性分析,选用7种数据形成多参数数据组合,对其进行最大似然监督分类,同时进行常规三种极化加相位差的分类和基于复Wishart分布的最大似然分类,逐像元计算混淆矩阵,分析对比三种分类结果的精度,试验表明:相对于常规数据组合分类,基于复Wishart分布的监督分类可以小幅度提高分类精度,而利用目标分解得到多参数组合数据进行分类则有大幅度的提高。