简介：Thispaperaimsatareviewoftheworkcarriedouttodateontheadjointassimilationofdatainmarineecosystemmodelssince1995.Thestructureandfeatureoftheadjointassimilationinmarineecosystemmodelsarealsointroduced.Toillustratetheapplicationoftheadjointtechniqueanditsmerits,a4-variableecosystemmodelcoupledwitha3-DphysicalmodelisestablishedfortheBohaiSeaandtheYellowSea.ThechlorophyllconcentrationdataderivedfromtheSeaWiFSoceancolourdataareassimilatedinthemodelwiththetechnique.Someresultsarebrieflypresented.

简介：ExperimentalstudieshavebeenconductedontheacousticeffectsofKLEIN-510subbottomprofilerfordifferentsedimentarylayersinestuaryandbayareas.Sedimentarylayerboundariescanberecordedclearlyandcontinuouslybythisinstrumentandthencomparedwiththeresultsfromdrillingcorestorevealsomevariationsofsedimentaryenvironments.Withthisinstrument,theaveragedepositratecanbedeterminedandthebed-rockbeneaththeseabottomcanbefoundout.

简介：Whenusingtherandomprocessinsoilprofilemodeling,thestationaryandergodicityofthesoilpropertiesintheprofilemustbetested.Thispaperdescribesaprocedureforstationaryandergodicitytesting.Numericalexamplesweregivenfordemonstration.Alog-cosinefunctionissuggestedtosimulatethecorrelationfunction,whichhasbeenprovedtobegoodforsoilprofilemodeling.

简介：Astrainofyeast,whichcanendurehighosmoticpressure,isemployedforthesensitivematerialofthemicrobialBODsensor.Twoimmobilizationmethodsareused,I.e.CalciumalginategelbeadsandPVAgelbeads.TheresultsshowthatthePVAgelbeadsisbetter.TheinfluencesofosmosisandheavymetalionsontheyeastentrappedinthePVAgelbeadsarealsostudiedintheexperiment.

简介：Biomarkerisanimportanttoolinthestudyofmarineorganicgeochemistry.Itsdevelopmentandapplicationmakesitpossibletoelucidatetheprocessandmechanismoftheorganicmatterintheocean.Hydrocarbonsarethemostusefulmolecularmarkers.Theyareusedastracersinmanyaspects,suchassourceindication;thedegradationoforganicmatter;diagensisprocess;environmentalpollutionandpaleooceanicstudy,etc.Theyarestudiedintheestuaries,coastalareaanddeepseatogivetheknowledgeofmarineorganicgeochemistry.Thepaperdealswiththecharacteristics,developmentandapplicationofbiomarkersaswellastheiradvantagesanddisadvantages.

简介：Animportantresearchareainoceanographicsurveyingandmappingistoobtainsubmarinetopographybyremotesensingtechnique,especiallybySARimagery.Inthisarticle,problemsrelatedtoSARimageryareanalyzedtoprovidereferencesforthefurtherresearch.

简介：推迟的沉积的遥感上的量的申请是遥感学习的设计申请的一个重要方面。在这份报纸，厦门海湾被选择为学习区域。遥感数据的十一个不同阶段被选择建立一个量的遥感模型由使用遥感图象和伪同步的测量沉积数据印射推迟的沉积。基于开发的实验统计是在即时推迟的沉积集中和集中以及变换在表面层之间建模的平均tidally的推迟的沉积之间的变换模型推迟的沉积集中和平均深度的推迟的沉积集中。在这个基础上，量的应用程序推迟的沉积的遥感上的综合模型被开发。由象多时间的遥感图象一样使用这个模型，平均的多年推迟了厦门海湾的沉积集中被预言。在模型预言和多年平均的观察数据表演之间的比较象附近的地点的集中差别一样推迟了学习地点的沉积集中能被遥感模型很好与21.61%的错误率或更少预言，它能满足隧道免职计算的设计要求。

简介：Thispaperrevealsthatthelong-periodstatisticdistributionofthecharacteristicheightsofdeep-waterwavesassumesthelognormaldistribution.Thereafter,thelargestwave-heightwhichmayoccurintheservicelifeofcoastalstructuresisderivedinthispaper.

简介：ThreekindofapplicationofADCPisreportedforlong-termmonitoringincoastalsea.(1)Therourinemonitoringofwaterqualities.ThewaterqualityandADCPechodata(600kHz)observedinthelong-termareanalgzedatMT(MarineTower)StationofKansaiInternationalAirportintheOsakaBay,Japan.Thecorrelationbetweentheturbidityandechointensityinthesurfacelayerisnotgoodbecauseairbubblesgeneratedbybreakingwavearenotdetectedbytheturbiditymeter,butdetectedwellbyADCP.Whenestimatingtheturbidityconsistsofplanktonpopulationfromechointensity,theeffectofbubbleshavetobeeliminated.(2)Monitoringstirringupofbottomsediment.ThespecialobservationwascardedoutbyusingfollowingtwoADCPintheOsakaBay,OneADCPwasinstalledupwardonthesea.TheotherADCPwashangeddownwardatthegatetypestandabout3mabovefromthebottom.Atthespringtide,highechointensitiesindicatingthestirringupofbottomsedimentwereobserved.(3)Themonitoringfortheboundaryconditionofwatermixingatanestuary.Insummerseason,theADCPwassetatthemouthofTanabeBayinWakayamaPrefecture,Japan.Duringtheobservation,watertemperaturenearthebottomshowedremarkablefallswithintervalofabout5～7d.Whenthebottomtemperaturefell,theinflowcurrentwithlowechointensitywaterappearsatthebottomlayerintheADCPrecord.Itisconcludedthatwhenoccasionalweaknortheastwindmakesweakcoastalupwellingatthemouthofthebay,thecombinationofupwellingwithinternaltidalflowcausesremarkablewaterexchangeanddispelstheredtide.

简介：

简介：在我们担心的一些海区域附近获得长期的观察数据的尝试通常在很难或甚至不可能实际近海并且海洋工程状况。在这份报纸，借助于线性吝啬平方的评价方法，扩大短期的数据到长期的一个新方法被开发。长期的数据关于有关海，区域能经由从邻居获得的一系列长期的数据被构造海洋学的车站，通过不同数据的关联分析系列。在在多重线性回归模型采用的可变数字的数据系列，以及限制的长度之上盖住时间系列预言方法overdependence的不足是有效的。当分析数字选择的例子引用完成海洋学的车站，从位于山东半岛的三个海洋学的车站收集的暴风雨巨浪数据被拿(邻近concerning海区域)并且在为参考并且为分别地设计工程建设被选择的海地点之间的关联系数。由比较N年回来时期，计算从的价值观察了未加工的数据并且处理了借助于线性吝啬平方的评价方法从有限数据系列被扩大的数据，一个人能得出这个方法能在实际海洋工程给更加好的评价的一个结论，尽管有关于未加工、处理的数据的不同的极端值分布。

简介：AnewmethodofNeutronActivationAnalysis(NAA)forsedimentmovementstudyispresentedinthispaper.Throughanalyzingthenaturalsediment,theinformationaboutnaturaltracingagentshasbeenobtained,whichcanshowthedirectionofsedimentmovementandrelativedischargeofsedimenttransportation.Testresultsinsomeareas,suchasShantouHarbourandHangzhouBay,areingoodagreementwiththosefromnormalhydrologicmeasurementsandsomeresultsarenotobtainablewiththelatter.TheNAAiseconomical,practicalandreliable,andshouldbewidelyusedinengineeringpractice.

简介：

简介：-Accordingtobasicequationsoffluidmechanics,thispaperpresentsaunifiedvariationalprincipleoffluidmechanics(UVPFM)byusingtheoptimizationmethodofweightedresiduals(OMWR).Theadvantagesareasfollows,theestablishmentofthefunctionalandthevariationalprincipleiseasy,itcanchangevariousproblemsoffluidmechanicsderivedbybasicequationsintoaunifiedoptimizationproblem,andthesolutionistheoptimumoneinsomesense.AccordingtotheOMWRforthesolitarysubdomain,thispaperusesUVPFMontoanysolitarysubdomainandgivesthesolutionofthehydrodynamicsequationwhichissuitableonlyforthatsolitarysubdomain.AccordingtotheOMWRforsolitarypoint,thispaperusesUVPFMtoanysolitarypointandgivesthesolutionofthehydrodynamicsequation(pointsolution)whichissuitableonlyforthatsolitarypoint.Asthesolutionforthesolitarysubdomainorsolitarypointisdevelopedindependently,thecompatibilitywithothersubdomainorotherpoints,do

简介：

简介：Inmarineengineering,thestrengthofasubmarinesedimentisanindispensableparameterforassessmentofconstruction.Inthisstudy,afree-fallconepenetratornamedIPenwasdevelopedtorealizearapidandefficientmeasurementofsedimentstrength.Theequipmentischaracterizedbymodulardesignandself-containeddataacquisition.Itisequippedwithanaccelerationsensor,awaterpressuresensor,andapiezoconepenetrationtest(CPTu)probe.Itisdesignedtobereleasedfromnearseabedsurfacewithareleaserandthenfallfreelytoprovideahigherpenetrationvelocity.Itsmaximumworkingdepthisapproximately2500mandmaximumpenetrationdepthisapproximately3m.Toderivethecorrelationbetweenpenetrationresistanceandsedimentstrength,acalibratorwasdevisedtodeterminethepenetration-ratefactor.Inaddition,thefactorapplicabletoinsitutestpointswasdeterminedinlaboratoryexperiments.InJune2016,theIPenwastestedinsituintheSouthYellowSea,China,duringasharedvoyagefundedbytheNationalScienceFoundation.Meanwhile,undisturbedcolumnsampleswerecollectedforlaboratorytests.Basedontheinsitutestresults,itwasdemonstratedthattheIPencouldaccuratelyrecordtheworkingstatesofvarioussensorsduringthefreelyfallingcourse.IPentestresultsreliablyreflectedthesedimentstrengthatallthetestingpointswhencomparedwithlaboratorycalibrationtests,insituvanetestsandpenetrationtests,laboratorypenetrationtests,andunconsolidatedandundrainedtriaxialcompressiontests.

简介：Inthispaper,wecalculatedmulti-scaleresidualgeoidanomalieswiththemethodofgeoidseparationprocessing,accordingtoEGM2008ultra-highordergravityfieldmodel,remove-restoretechniqueandStokesintegral.TheEastAsiancontinentalmarginwasselectedasthestudyarea.Theresidualgeoidanomalieshavebeencalculatedbyprogramming.Onthebasisofresidualgeoidanomaliesatvariousorders,theinterlayergeoidanomaliesatdifferentdepthswerecalculatedtodepictthespatialdistributioncharacteristicsoftheresidualgeoid.Finally,weconductedadetailedgeophysicalinterpretationforthestudyareaaccordingtothegeoidanomaliesincombinationwithothergeophysicaldatasets.Fourconclusionscanbeoutlinedasfollows：1）itisimpracticablethatgeoidanomaliesareusedintheinterpretationoftheshallowobjectsduetotheinfluenceoftheterrain;2）theanomaliesofresidualgeoidcanreflecttheintensityofsmall-scalemantleconvectionintheasthenosphere;3）theinterlayergeoidanomaliescanreflectthemagmaticactivitiesassociatedwiththemantleconvectionandmantleplumeindifferentscales;4）thestudyofthegeoidmayprovideanapproachfortheresearchofthesubductionzone,mantleconvectionandmantleplume.

简介：TheHY-1AsatelliteisthefirstoceanicsatelliteofChina.Duringthewinterof2002～2003,thedataoftheHY-1AwereappliedtotheseaicemonitoringandforecastingfortheBohaiSeaofChinaforthefirsttime.TheseaiceretrievalsystemoftheHY-1Ahasbeenconstructed.Itreceives1Bdatafromthesatellite,outputsseaiceimagesandprovidesdigitalproductsoficeconcentration,icethicknessandiceedge,whichcanbeusedasimportantinformationforseaicemonitoringandtheinitialfieldsofthenumericseaiceforecastandasoneofthereferencedatafortheseaiceforecastingverification.Theseaiceretrievalsystemofthesatelliteisdescribed,includingitsprocesses,methodsandparameters.TheretrievingresultsandtheirapplicationtotheseaicemonitoringandforecastingfortheBohaiSeaarealsodiscussed.

简介：

简介：Tothepotentialoil-spillriskcausedbyoffshorepipelinemoreattentionhasbeenpaidaftertheDalianoilspillincidentfromoil-pipelineexplosion.Sincethenanissueabouthowtopreventandcontrolthesuddenoil-spillfromtheoffshorepipelinehasbeenraised.Inthispaper,weproposedanoptimizedmodeltoanalyzethemaincauses(probability)ofspillandtheconsequencewiththefuzzycomprehensiveassessmentmodel.Consideringthecomplicatedassessmentprocessforoil-spill,theassessmentfactorsysteminvolvingthespillprobabilityandconsequencewasestablishedbasedontheoperativemanualandstatisticleakage/damagedataofoffshorepipelineinordertoestimatetheintegratedspillriskscoreautomatically.Theevaluatedfactorsofspillprobabilitycouldbegroupedintofiveaspects:corrosion,fatigue,nationaldamage,thirdparty,andoperationalfault;theconsequenceevaluatedfactorsofspillincludedhazardofoilandimpact-controllingcapability.Withsomemodificationsbasedonexperts’opinions,eachoftheevaluatedfactorsinourworkwasdevelopedwitharelativeweightandevaluationcriterion.AtestexampleforanoffshorepipelineintheBohaiwaterswasdescribedtoshowhowthemodelcanbeusedforanactualcaseinmoredetail.Byusingtheoil-spillriskassessmentmodel,itiseasytodeterminetherisklevelassociatedwiththeongoingactivityandmanagementlevelandhencetotaketheriskmitigationactionimmediately.