简介：Theinfluenceofdiffuserparameters,includingtheriserspacing,portnumberinariser,injectionangle,portarrangement,etc.,onthesurfaceinitialdilutionisexperimentallyinvestigated.Therelativedensitydifferencebetweentheeffluentandtheseawaterinthemodelisthesameasthatintheprototype,andtheeffectofthecrosscurrentissimulatedbyaninversemodeltechnique.Basedontheresultanalysis,thearrangementwithmoreportsinariserandlargerriserspacingissuggestedtosaveconstructioncost.TherelationshipbetweentheReynoldsnumberbasedontheportdiameterandvelocity,andthesurfaceinitialdilutionisalsoexplored,andthecriticalReynoldsnumberisproposed.

简介：Thisarticlediscussestheinteractionofanilineandoceanalgaebasedonthestandardappraisalmethodofchemicalmedicineforalgaetoxicity.Itisshowedbyexperimentalresultsthatanilinehasprettytoxiceffectsonalgae.Suspendedsubstancesinwatercanoffsetsomeeffectsofaniline.Italsodiscussesthedynamicconstantoffirstorderdegradationreactionrateofalgaeonanilinefromthepointofviewofchemicaldynamics.

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简介：BasedonAVISO(archiving,validationandinterpretationofsatellitedatainoceanography)datafrom1993to2010,QuikSCAT(QuickScatterometer)datafrom2000to2008,andArgodatafrom2003to2008,theinterannualvariabilityoftheGreatWhirl(GW)andrelatedmechanismsarestudied.ItshowsthattheoriginandterminationtimesoftheGW,aswellasitslocationandintensity,havesignificantinterannualvariability.TheGWappearedearliest(latest)in2004(2008)andvanishedearliest(latest)in2006(2001),withtheshortest(longest)durationin2008(2001).Itscenterwasmostsouthward(northward)in2007(1995),whiletheminimum(maximum)amplitudeandareaoccurredin2003and2002(1997and2007),respectively.TheGWwasweakeranddisappearedearlierwithitslocationtendingtobeinthesouthwestin2003,whilein2005itwasstronger,vanishedlaterandtendedtobeinnortheast.TheabnormalyearswereoftennotthesameamongdifferentcharactersoftheGW,andwerenotallcoincidentwithENSO(ElNi?o-SouthernOscillation)orIOD(IndianOceanDipole)events,indicatingtheverycomplexnatureofGWvariations.MechanisminvestigationsshowsthattheinterannualvariabilityofintraseasonalwindstresscurlinGWregionresultsinthatoftheGW.ThegenerationoftheGWiscoincidentwiththearrivalofRossbywavesattheSomalicoastinspring;theintensityoftheGWisalsoinfluencedbyRossbywaves.TheterminationoftheGWcorrespondswelltothesecondoneofthetoptwopeaksinthebaroclinicenergyconversionrateinGWregion,andtheintensityandthepositionoftheGWarealsocloselyrelatedtothetoptwobaroclinicenergyconversionrates.

简介：Itisurgentandnecessarytointegrateamarinegeographicalinformationsystem(MGIS)withmarineremotesensingdetectionmodules.Onthebasisofthecurrenttechnologyandfeaturesofapplications,anopenthree-layerintegrationframeworkisdesigned.Atthedatalayer,atwo-levelthree-baseintegrationmechanismbasedontheplug-intechnologyisapplied;Atthefunctionlayer,anintegrationmodebasedonAPI,DLL,EXEandCOMisdiscussed;andattheapplicationlayer,asharingmechanismbasedontheclients/serviceisadopted.Asanexample,theremotesensingintegratedapplicationinformationsystemofChina'scoastalzoneandoffshore(MaXplorer1.0)withmultiecologyremotesensingfusionandassimilationmodule,surgedetectionmoduleaswellaseightotherthematicapplicationmodulesisintegrated,andthekeytechnologyofintegrationisdiscussedatdifferentlayersandindifferentmodules.Theresultshowsthatitispossibletorealizetheconformityoftechnologyandresourcesandtoprovidetheincorporatetechnologyplatformformarineinformationoperationalfunctioningafterapplyingtheintegrationframework

简介：Basedonthemodeltestofpoddedpropulsorinstraightforwardmotion,thepaperpresentstheresultsoftheeffectsofgeometricparametersonthepropulsivecharacteristicsofpoddedpropulsorsinviscousflow.Threemaingeometricalparameters,i.e.poddiameter,strutdistancefromthepropellerplane,andthemaximumthicknessofstrutarestudiedwithsystematicallyvariedgeometrywhiletheparametersofpropellerbladesarefixed.TheRANSapproachisadoptedtostudythesteadyperformanceusingtheFluentsoftwarepackage.Whiletheinteractionsofthepropellerbladeswiththepodandstrutaretime-dependentbynature,themixingplanemodelisemployedtopredictthesteadyperformance.Inconsiderationofthecomplexity,theresearchdoesnotdealwiththeeffectsofthecombinationofsuchthreemainparameters.

简介：Inthispaper,thecharacteristicsofdensitycurrentundertheactionofwavesaredescribedwiththehelpofflumeexperimentandtheoreticalanalysis.Thestudyshowsthatturbidwaterundertheac-tionofthewavescanpresentthreetypesofmotion,i.e.significantstratification,fragilestratificationandstrongmixing.Themotionofturbidwaterpresentssignificantstratificationwhen（H/D）/△ρ/ρ1/2≤4.5,generallythisstateisknownasdensitycurrent.Theformulasofmotionvelocity,thickness,anddischargeofdensitycurrentmovingonhorizontalbottomarederivedbyuseofba-sicequationssuchasmomemtumequation,equationofenergyconservationandcontinuityequationoffluid.Thetime-averagevelocityandthethicknessofdensitycurrentundertheactionofwaveshavearela-tionshipwithsuchparametersasrelativedensity（△ρ/ρ）,waveheight（H）,andwaterdepth（D）.Whentheseparametersaredetermined,thetime-averagethicknessandmotionvelocityofdensitycurrentareal-sodetermined.Therelat

简介：BasedonthebiologicalresourcessurveysinChina'sexclusiveeconomiczone,thepaperdiscussestheapplicationoftheGIStechnologyinevaluatingthemarineenvironmentalquality,establishesthebasicconceptandtechnologicalprocessforevaluatingtheenvironmentalqualityofthehabitatsofmarinelivingresources,proposesthekeypointsfortheestablishmentoftherelevantevaluationattributesdatabasebyapplyingtheGIStechnologyandanalysesseveraltypicalevaluationmodelsandthedatainterpolationmethodforthemodelinGIS.ResultsshowthatthecombinationoftheGIStechnologywiththequantitativeevaluationmodelcanbeappliedtothefastandaccurateevaluationofthemarineenvironmentalquality.

简介：Basedupontheone-yearwindwavemeasurementdata,collectedfromtheSouthChinaSea(SCS)atcoordinates20°36.298?N,110°45.433?E.byAcousticWaveAndCurrent(AWAC),weanalyzedthewavecharacteristicsandconcludedthatthemostcommonwavedirectionwasEandthesecondmostcommondirectionwasENE,themeanandthemaximumvaluesofsignificantheightwas1.2mand4.36m,respectively.Themeanperiodwas4.0s.Wealsoevaluatedthewavespectrumsunderconditionsexistinginthreetyphoons:Rumbi,JetiandUtor.Wefoundthatunimodalspectrumsoccurredmoreoftenthanothers,andthemaximumspectrumpeakwas30.7911m2s.Theminimumpeakfrequencywas0.0625Hz,andthemeanpeakfrequencywas0.126Hz.Thewaveperiodisimportantforthedesignofmarinestructures,especiallythepositionofpeakfrequencyhadagreatinfluenceonthestresscalculation.Spectralanalysisshowedthatthevaluesofpeakfrequencydistributedbetween0.063Hzand0.217Hz,withthemeanvalue0.114Hz.Wefitthenormalizedspectrumwith6theoreticalspectralmodels,outofwhich,theWenspectrum,JONSWAPspectrumandWallopsspectrumwereprovedtogivethebestfit.WhatdistinguishedtheWenSpectrumfromtherestwasthatitdoesnotrelyonthemeasuredspectrumforparameterestimation.Hence,werecommendthattheWenspectrumshouldbewidelyusedinmarineconstruction.

简介：Mobileoffshoredouble-causewaypiersystem,atypeofseashoreunloadingequipment,consistsoftwogroupsofmultipleconnectedsemi-submersiblemodules.Thisstructurehaswideapplicationbecausemostofthemiddleorminitypeofvesselsandshipscanbemooredtoit.Basedontheanalysisofcomputationalmethodsofmulti-bodymotionresponse,ahydrodynamicmodelissetupandthethree-dimensionalpotentialtheoryinfinitedepthisadoptedtocalculatethethree-dimensionalmotionresponseofthissystem.ThedoubleP-Mspectrumisusedtoanalyzethemotionresponseinirregularwaves.Differentwavedirectionsarespeciallytakenintoconsideration,duetotheirvariouseffectstothemotionresponse.Furthermore,thecalculatedresultiscomparedwiththatoftheexperiment,anditisprovedthatsway,heave,pitchandyawmotionaregreatlyconstrainedbymooringsystem.Thecomparisonalsoindicatesthatthemodelcanforecastthemotionperformanceofthetarget,andthatthecalculatedresultcanalsobeusedasreferenceinconnectorandmooringsystemdesign.

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：ThefatigueflexuralperformanceofRCbeamsattackedbysaltspraywasstudied.Atestingmethodinvolvingelectroosmosis,electricalacceleratedcorrosionandsaltspraywasproposed.Thiscorrosionprocessmethodeffectivelysimulatesreal-worldsaltsprayandfatigueloadingexertedbyRCcomponentsonseabridges.FourRCbeamsthathavedifferentstressamplitudesweretested.ItisfoundthatdeteriorationbycorrosionandfatigueloadingreducesthefatiguelifeoftheRCanddecreasestheabilityofdeformation.Thefatiguelifeanddeflectionabilitycouldbereducedbyincreasingthestressamplitudeandthecorrosiondurationtime.Thetestresultdemonstratesthatthisexperimentalmethodcancouplecorrosiondeteriorationandfatigueloadingreasonably.ThisproceduremaybeappliedtoevaluatethefatiguelifeandconcretedurabilityofRCcomponentslocatedinanaturalsaltsprayenvironment.

简介：Thispaperdiscussessomeprevious,andpresentssomenewexperimentalresultsonwavetransmissionoversubmergedbreakwaters.Theobjectiveofthisstudyistoevaluatewavetransmissioncoefficientanddevelopatwo-dimensional(2D)modelasanimprovementtotheexistingwavetransmissioncoefficientmodels.Factorswhichaffectwavetransmissionoversubmergedbreakwatersarediscussedthroughaseriesoflaboratoryexperiments.Basicrecommendationsforevaluationanddesignofsubmergedrubble-monudbreakwatersarepresented.Fromthetestresults,acalculationformulaofwavetransmissioncoefficientisproposed.

简介：为了学习水动力学，在免费表面，数字模拟和开水的实验的一个推进器的性能与改变推进器的柄深度被执行。平静的水里的戳和转矩系数上的一个推进器的柄深度的影响主要被学习。同时，这篇论文也由实验和理论计算方法在特殊工作条件下面学习推进器空气摄取，并且比较计算结果和试验性的结果。结果证明在这篇论文使用的理论计算模型能成功地模仿推进器空气摄取。成功的现象模拟提供一个必要理论基础理解推进器空气摄取的物理本质。

简介：用为水质量的遥感技术，评估是在海洋的环境监视的一个不可避免的趋势。然而，水质量参数的更少范畴能被遥感技术比35在GB3097-1997海洋的水质量标准指定的监视。因此，我们考虑了哪个参数必须被遥感选择并且怎么用有限参数为水质量评估当模特儿。在这篇论文，集中了于Leizhou半岛nearshore水，我们发现了N，P，货到付款，PH并且做是由分析测量数据的水质量的主导的参数。然后，数学统计被用来决定在五个参数之中的关系是货到付款>>P>N>pH。最后，五参数，fourparameter和三参数的水质量评估模型被建立并且比较。结果显示出那货到付款，，P和N是为Leizhou半岛nearshore水质量，和最佳的全面的水质量的遥感评估的必要参数评估模型fourparameter模型。这个工作可以为由遥感监视另外的海洋的水的质量用作一本参考书。

简介：BasedonthedataofphytoplanktonandenvironmentalfactorsintheBohaiBay,thedependencebetweentheconcentrationofphytoplanktonandenvironmentalfactorsisanalysedbylinearcorrelationcoefficient,rankcorrelationcoefficientandHoeffdingtestofindependence.Theresultshowsthatwind-speed,air-pressure,surfacetemperature,fieldpH,salinity,DO,silicateandNO3haveagreatimpactontheconcentrationofphytoplankton.

简介：Verticallyexploringthecharacteristicsofthetyphoonboundarylayer(TBL)playsanimportantroleinrecognizingtyphoonstructure.TheboundarylayerradialdirectionandtangentialwindcharacteristicsofTyphoonUsagibasedontheobservationaldataofthreeboundarylayerwindprofilerstationsalongtherouteofTyphoonUsagi(No.1319)andbycombiningwithsoundingdata.Theresultsshowthat:(1)maximumtangentialwindappearsinthevicinityoftheeyeareaofUsagi,anditbasicallymaintainsaheightofaround1800mwhenUsagikeepsastrongtyphoonlevel,withtherapidlydecreasingstrengthofUsagiafteritlands,thespeedofthemaximumtangentialwindanditsverticalrangebothdecrease;(2)theheightofthemaximumtangentialwindisclosetothatoftheinflowlayertopofthetyphoon,andisgreaterthanthatoftheboundarylayerestimatedonthebasisofRichardsonnumberorpotentialtemperaturegradient,whiletheheightofmixedlayerjudgedonthebasisofthesignal-to-noiseratio(SNR)oritsgradientisusuallylow;(3)thetheboundarylayerheightcanreachhigherthan2100mbeforeUsagilands.Whenthetyphoonleveloraboveisachieved,theboundarylayerheightobservedbyvariousstationsdoesnotchangemuch,basicallystayingatbetween1200and1600m.WiththedecreasingstrengthofUsagiafteritslandfall,theboundarylayerheightrapidlydrops.

简介：Thefieldsofstructuralgeologyandtectonicshavewitnessedgreatprogressoverthelastdecadeandarepoisedforfurtherexpansioninthefuture.Oneofthesignificantbreakthroughsistheestablishmentofthe'BeyondPlateTectonicsTheory'whereacombinationofconceptualmodelsandnumericalmodelingonplumetectonicsandplatetectonicshasenablednewinsightsintothestructuralandtectonicarchitectureandprocessesinthedeepinterioranddeepsea.Thispapersynthesizesdevelopmentsofstructuralgeologyandtectonicsfromamacroscopicperspectiveindeepinterioranddeepsea.Fourkeytechniquesarealsoreviewed:satellitealtimetryforsurfacestructuresindeep-seamulti-beamsea-floormapping;tomographyfortectonicsofthedeepinterior;diversemodelingapproachesandsoftwareforunfoldingdynamicevolution;andtechniquesforHT/HPexperimentsonmaterialrheologyandinsitucomponentmeasurements.

简介：Thispaperpresentsthesurveyandresearchworkoftwoland-seaprofilesintheBohaiSea,China,carriedoutin2010–2011,includingtheseismicsourcesonlandandinthesea,theoceanbottomseismographs(OBS)andtheirrecovery,thecouplingofOBSandtheenvironmentnoiseinseaarea,thedataqualityofOBSs,andtheresultofdataanalysis.WefocusedontheinvestigationofcrustalstructuresrevealedbythetwoNE\EW-trendingjointland-seaprofiles.IncombinationwiththePn-velocitydistributionandgravitymagneticinversionresultsintheNorthChinaCraton,weproposethattheundulationoftheMohointerfaceintheBohaiandsurroundingareasisnotstrong,andthelithosphericthinningismainlycausedbythethinningofitsmantlepart.TheresearchresultindicatesthatobviouslateralvariationsofMohodepthandseismicvelocityappearnearbyallthelarge-scalefaultsinBohaiSea,andthereisevidenceofunderplatingandreformingofthelowercrustbymantlematerialintheBohaiarea.However,geophysicalevidencedoesnotappeartosupportthe"mantleplume"or"delamination"modelfortheNorthChinaCratondestruction.ThecrustalstructureoftheBohaiSearevealed"arelativelynormalcrustandobviouslythinnedmantlelid",localvelocityanomaliesandinstabilityphenomenainthecrust.ThesefeaturesmayrepresentacombinedeffectofNorthChina-YangtzecollisionatanearlystageandtheremoteactionofPacificplatesubductionatalatestage.

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