简介：塑造耳朵的热前面(ESTF)，由黄海温暖的水流(YSWC)和山东沿海的水流(SCC)的集中形成了，在冬季是在黄海(YS)的很重要的海洋的现象。在所有表明的situ大小和分析数据集，ESTF在1950s-1990s，和一个类似的变弱趋势期间一直在变弱，这是也在YS上在冬季季风发现。数字实验证明变弱冬季季风能沿着瓷器海岸和向南方的异常水流与向北方异常的水流在多十的timescale上在YS导致异常发行量在里面中央对季节的吝啬的循环YSgenerally相反。异常发行量引起YSWC和SCC的减速，并且因此削弱ESTF。因为ESTF在地区性的海洋动力学和由空至海的相互作用起重要作用，它变弱在冬季在YS为地区性的气候有重要含意。

简介：Inordertotheoreticallystudythebucklepropagationofsubseapipelineswithslip-onbucklearrestors,atwo-dimensionalringmodelwassetuptorepresentthepipelineandanonlinearspringmodelwasadoptedtosimulatethecontactbetweenpipeline’sinnerwallsandbetweenpipeline’souterwallandslip-onbucklearrestor’sinnerwallduringbucklepropagation.Inaddition,somereversespringsareaddedtopreventthewallofleftandrightsidesseparatingfromtheinnerwallofslip-onbucklearrestors.Consideringlargedeformationkinematicsrelationsandtheelastic-plasticconstitutiverelationofmaterial,balanceequationswereestablishedwiththeprincipleofvirtualwork.Thevariationofexternalpressurewithrespecttothecross-sectionalareaofpipelineswasanalyzed,andthelowerboundofthecrossoverpressureofslip-onbucklearrestorswascalculatedbasedonMaxwell’senergybalancemethod.Bycomparingthetheoreticalresultswithexperimentandfiniteelementnumericalsimulation,thetheoreticalmethodisprovedtobecorrectandreliable.

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简介：根据一系列重要历史的地图，即，华南海岛，Nansha岛，Zhongsha岛，Xisha岛，Yongxing岛和Shidao岛的地点地图，并且太平天国的岛(在1946由中华民国的内部的部的领土的管理部门转存)，并且中华民国的管理区域地图在1948出版了，包围华南海岛的击破的线在华南代表瓷器海边界它是连接与的两个，和延期，中国的陆地边界。在当稳固的线被用来代表陆地boundarya时，击破的线被用来代表水边界的那时间，通用方法在然后国际性地被认出的地图使用了。上述观察在为在华南海区域上的国际海上的定界线是有用的华南海提供瓷器海边界的历史、科学的证据。

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简介：随着浙江省各地对人影业务的需求日益提高，人影作业量逐年增加，这对浙江如何科学管理人影业务提出了新挑战。基于B／S模式建设一套面向省市县的人影业务管理系统，解决了人影业务操作规范化，管理标准化、科学化，信息数据化，信息口径统一化等问题，一定程度上提高了工作效率，促进了人影业务现代化发展的目的。另外，系统还具备对业务工作实时监管和弹药安全审批等功能，增强了人影安全生产的监管能力。

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简介：非洲S盆地是西非Iullemmeden盆地东南边缘的一部分，现有地质资料认为s盆地是一个向西南倾斜的单斜盆地、为初步查明该盆地的地质构造格架为评价盆地的含油气潜力提供依据，在s盆地展开了1：5万重磁调查。本文依据盆地的实测重力数据及已有地质资料，进行了数据处理与解释推断，在研究盆地不同深度空间的重力异常时发现，s盆地具有上下两层断裂系统：下层为一套控制盆地形成与发育的近南北向的基底断裂系统，是西非裂谷系一系列近南北向的地堑式盆地的组成部分；上层为一套有北东向与北西向断裂共同组成的盖层断裂系统（部分运动强烈的切入基底），这套断裂决定了盆地的最终形态并控制着油气流的运移通道和储存空间。

简介：BasedontheCMAtropicalcyclone(TC)besttrackdataaswellasthereanalysisdatasetsfromtheNCEP/NCARandNOAA,thevariationcharacteristicsofTCnumberfrom1949to2013overthewesternNorthPacific(includingtheSouthChinaSea)areexamined.Notably,thetimeseriesofTCnumberexhibitsasignificantabruptchangefrommoretolessaround1995.ComparativeanalysisindicatesthattheenvironmentalfactorsnecessarytoTCformationalsochangesignificantlyaroundthemid-1990s.After1995,accompanyingwithanomalouswarmseasurfacetemperature(SST)inwesternequatorialPacific,aLaNia-likepatternintropicalPacificappearsobviously.However,comparedwiththeperiodbefore1995,theverticalupwardmovementdecreases,verticalshearoftroposphericzonalwindincreases,andsealevelpressure(SLP)rises,allofwhichareunfavorabletoTCformationandworktogethertomakeTCnumberreducemarkedlyafter1995.Furthermore,whenthetypicalinterannualmoreandlessTCsyearsareselectedinthetwoseparatestagesbeforeandafter1995,therelativeimportanceofoceanicandatmosphericenvironmentsininterannualTCgenerationisalsoinvestigatedrespectively.TheresultsimplythattheSSToverthetropicalPacificexertsrelativelyimportantinfluenceonTCformationbefore1995whereastheatmosphericcirculationplaysamoreprominentroleinthegenerationofTCafter1995.

简介：基于18个CMIP5模式在RCP情景下的模拟结果,综合分析了全球升温1.5~4℃阈值下亚洲地区平均温度和降水以及极端温度和降水的变化,并着重对比了1.5℃与2℃升温阈值下的异同。结果表明：相比工业化前,在全球升温1.5℃、2℃、3℃和4℃阈值下,亚洲区域平均温度将分别升高2.3℃、3.0℃、4.6℃和6.0℃,高纬度地区的响应大于中低纬地区;降水分别增加4.4%、5.8%、10.2%和13.0%,存在明显的区域差异。极热天气将增加,极冷天气将减少;极端降水量的变率将会加大。与2℃升温阈值相比：1.5℃阈值下亚洲平均温度的上升幅度将降低0.5~1.0℃以上,大部分地区的降水增幅减少5%~20%,但西亚和南亚西部的降水则偏多10%~15%;极端高温的增温幅度在亚洲地区均匀下降,而极端低温的增温幅度在亚洲中高纬地区降低显著;亚洲大部分地区极端降水的增加幅度减弱,但在西亚会增强。全球升温1.5℃和2℃时,亚洲发生非常热天气的概率相比基准期（1861—1900年）均将增加1倍以上,发生极热天气的概率普遍增加10%;发生极端强降水的概率增加10%。

简介：Asthestrongestsubseasonalatmosphericvariabilityduringborealwinter,threeremarkablesuddenstratosphericmajorwarming(SSW)eventsinthe2000sareinvestigatedintermsoftheBrewer–Dobsoncirculation(BDC)response.Ourstudyshowsthatthechangesofcross-isentropicvelocityduringtheSSWsarenotonlyconfinedtothepolarregion,butalsoextendtothewholeNorthernHemisphere:enhanceddescentinthepolarregion,aswellasenhancedascentinthetropics.WhentheaccelerationofthedeepbranchoftheBDCdescendstothemiddlestratosphere,itsstrengthrapidlydecreasesoveraperiodofonetotwoweeks.TheaccelerationofthedeepbranchoftheBDCisdrivenbytheenhancedplanetarywaveactivityinthemid-to-high-latitudestratosphere.DifferentfromtherapidresponseofthedeepbranchoftheBDC,tropicalupwellinginthelowerstratosphereacceleratesupto20%–40%comparedwiththeclimatology,20–30daysaftertheonsetoftheSSWs,andtheaccelerationlastsforonetothreemonths.Theenhancementoftropicalupwellingisassociatedwiththelarge-scalewave-breakinginthesubtropicsinteractingwiththemidlatitudeandtropicalQuasi-BiennialOscillation–relatedmeanflow.

简介：Usingstatisticallydownscaledatmosphericforcing,weperformedanumericalinvestigationtoevaluatefutureclimate’simpactonstormsurgesalongtheGulfofMexicoandU.S.eastcoast.Thefocusisontheimpactofclimaticchangesinwindpatternandsurfacepressurewhileneglectingsealevelriseandotherfactors.Weadaptedtheregionaloceanmodelsystem(ROMS)tothestudyregionwithameshgridsizeof7-10kminhorizontaland18verticallayers.Themodelwasvalidatedbyahindcastofthecoastalsealevelsinthewinterof2008.Model’srobustnesswasconfirmedbythegoodagreementbetweenmodel-simulatedandobservedsealevelsat37tidalgages.Two10-yearforecasts,onefortheIPCCPre-Industry(PI)andtheotherfortheA1FIscenario,wereconducted.Thedifferencesinmodel-simulatedsurgeheightsunderthetwoclimatescenarioswereanalyzed.Weidentifiedthreetypesofresponsesinextremesurgeheightstofutureclimate:acleardecreaseinMiddleAtlanticBight,anincreaseinthewesternGulfofMexico,andnon-significantresponsefortheremainingarea.Suchspatialpatternisalsoconsistentwithpreviousprojectionsofseasurfacewindsandoceanwaveheights.

简介：ThisstudyproposesaGreen’sfunction,anessentialrepresentationofwater-saturatedgroundundermovingexcitation,tosimulategroundbornevibrationfromtrains.First,generalsolutionstothegoverningequationsofporoelasticmediumarederivedbymeansofintegraltransform.Secondly,thetransmissionandreflectionmatrixapproachisusedtoformulatetherelationshipbetweendisplacementandstressofthestratifiedground,whichresultsinthematrixoftheGreen’sfunction.ThentheGreen’sfunctioniscombinedintoatrain-track-groundmodel,andisverifiedbytypicalexamplesandafieldtest.Additionalsimulationsshowthatthecomputedgroundvibrationattenuatesfasterintheimmediatevicinityofthetrackthaninthesurroundingarea.Thewavelengthofwheel-railunevennesshasanotableeffectoncomputeddisplacementandporepressure.Thevariationofvibrationintensitywiththedepthofgroundissignificantlyinfluencedbythelayeringofthestratasoil.WhenthetrainspeedisequaltothevelocityoftheRayleighwave,theMachconeappearsinthesimulatedwavefield.TheproposedGreen’sfunctionisanappropriaterepresentationforalayeredgroundwithshallowgroundwatertable,andwillbehelpfultounderstandthedynamicresponsesofthegroundtocomplicatedmovingexcitation.

简介：Phosphorus(P)fractionationandsorptionbehaviorwerestudiedinthesedimentsoftwocalcium-sulfate(Ca-SO4:Ca2t170mgL-1;SO42-400mgL-1)waterreservoirsinthesoutherncentralArgentineAndes-ElCarrizalReservoir(ECR),whichstratifiesinsummerandElNihuilReservoir(ENR),whichisverticallymixedthroughouttheyear.Sedimentsizeclassesreflectedthelithologyofbothbasinsandthereservoirsrelativelocation:ECR(downstreamfromavalleyadjacenttoamountainenvironment)hadhigherclayproportionswhilethesandfractionwasmoreimportantinENR(justnexttoamountainenvironment).Inbothreservoirs,thechemicalcompositionrevealedlowalterationandcalciumenrichment.TotalPcontentwasrelativelyhigh(1.1-1.6mgPkg-1dryweight)asexpectedfromthecontributionofmarineformations.PfractionationwasdominatedbyCa-P(ECR,69%andENR,63%)followedbyorganic-P(23%)insummer-anoxicECRandbyiron/aluminum(Fe/Al)-P(27%)inoxicENR.BatchexperimentsshowedthatsorptionbehaviorinECRhadatypicalLangmuirisothermplotwhileinENRthatmodelfittedonlyatlowdissolvedPvalues(o5mgPL-1)andco-precipitationevidencewasobservedathigherPconcentrations.ItisproposedthatlowerFe/Al-Pcontentinanoxic(ECR)vs.oxic(ENR)sedimentsresultsfromthePreleasedfromiron-boundphosphorusduetosulfatereduction-ferroussulfideformationinananoxicenvironment.ThisconditionshouldenableECRsedimentstoadsorbPintofreshoxidizediron,andENRsedimentstoco-precipitatePwithcalciumduetoFe/Al-Psaturation,asobservedinbatchexperiments.ThispaperconstitutesthefirstdescriptionofphosphoruscontentanddynamicsinreservoirsedimentsinaridcentralwesternArgentina,wherewatersulfateconcentrationsarenaturallyhighduetobasinlithology.

简介：Inthispaper,accordingtotheresultsofthesatelliteimageryinterpretationandfieldinvestigation,westudytheactivefeaturesandthelatestactivetimesoftheChuxiong-Nanhuafault,theQuaternarybasinsformationmechanism,andtherelationshipbetweenthefaultandthe1680ChuxiongMs6%earthquake.SeveralQuaternaryprofilesatLvhe,NanhuarevealthatthefaulthasoffsetthelatePleistocenedepositsoftheT2andT3terracesofLongchuanriver,indicatingthatthefaultwasobviouslyactiveinlateQuaternary,TheChuxiong-NanhuafaulthasbeendominatedbydextralstrikeslipmotioninthelateQuaternary,withanaveragerateof1.6-2.Omm/a.SeveralpullapartQuaternarybasinsofChuxiong,Nanhua,andZiwuetc.havedevelopedalongthefault.The1680ChuxiongMs6%earthquakeandseveralmoderateearthquakeshaveoccurrednearthefault.TheChuxiong-Nanhuafaultaretheseismogenicstructureofthoseearthquakes,thelatestfaultmovementwasinthelate-Pleistocene,andeventheHolocene.Inlargearea,theChuxiong-NanhuafaultandtheeasternQujiangfaultandtheShipingfaultcomposedasetofNW-trendingobliqueorientationactivefaults,andthemotioncharacteristicsareallmainlydextralstrikeslip.Themotioncharacteristics,liketheredriverfaultoftheSichuan-YunnanRhombicBlocksouthwesternboundary,areconcernedwiththeescapingmovementoftheSichuan-YunnanRhombicBlock.

简介：ObjectiveThenearlyparallelN–S-trendingriftsinsouthernTibetrepresenttheE–WextensionoftheTibetPlateau.MostdatawhichconstrainedtheageoftheextensionaldeformationcomefromisotopicdatingofthedikesprobablyrelatedtotheactivityofthenearlyN–Sfaultingandmicasfromhydrothermalactivityandthelowtemperaturethermochronologyofplateauuplift.Previous

简介：TheprojectionofChina'snear-andlong-termfutureclimateisrevisitedwithanew-generationstatisticallydownscaleddataset,NEX-GDDP(NASAEarthExchangeGlobalDailyDownscaledProjections).Thisdatasetpresentsahigh-resolutionseamlessclimateprojectionfrom1950to2100bycombiningobservationsandGCMresults,andremarkablyimprovesCMIP5hindcastsandprojectionsfromlargescaletoregional-to-localscaleswithanunchangedlong-termtrend.Threeaspectsaresignificantlyimproved:(1)theclimatologyinthepastascomparedagainsttheobservations;(2)morereliablenear-andlong-termprojections,withamodifiedrangeofabsolutevalueandreducedinter-modelspreadascomparedtoCMIP5GCMs;and(3)muchaddedvalueatregional-to-localscalescomparedtoGCMoutputs.NEX-GDDPhasgreatpotentialtobecomeawidely-usedhigh-resolutiondatasetandabenchmarkofmodernclimatechangefordiverseearthsciencecommunities.

简介：TightzonesofthegasbearingKanganandDalanformationsoftheSouthParsgasfieldcontainaconsiderableamountofunsweptgasduetotheirlowporosity,lowpermeabilityandisolatedporetypes.Thecurrentstudy,integratescoredata,rockelasticpropertiesand3Dseismicattributestodelineatetightandlow-reservoir-qualityzonesoftheSouthParsgasfield.Inthefirststep,thedynamicreservoirgeomechanicalparameterswerecalculatedbasedonempiricalrelationshipsfromwelllogdata.Thelog-derivedelasticmoduliwerevalidatedwiththeavailablelaboratorymeasurementsofcoredata.CrossplotsbetweenestimatedporosityandelasticparametersbasedonYoung'smodulusindicatethatlowporosityzonecoincidewithhighvaluesofYoung'smodule.Theresultswerevalidatedwithpetrographicstudiesoftheavailablethinsections.Thecoresampleswithlowporosityandpermeabilityarecorrelatedwithstrongrockswithtightmatrixframeworksandhighelasticvalues.Subsequently,rockelasticpropertiesincludingYoung'smodulusandPoisson'sratioalongwithporositywereestimatedbyusingneuralnetworksfromacollectionof3Dpost-stackseismicattributes,suchasacousticimpedance(AI),instantaneousphaseofAIandapparentpolarity.Distinguishinglowreservoirqualityareasinpayzoneswithunsweptgasisthenfacilitatedbylocatinglowporosityandhighelasticmodulusvalues.Anhydritezonesareidentifiedandeliminatedasnon-payzonesduetotheircharacterizationofzeroporosityandhighYoungmodulusvalues.Themethodologydescribedhasapplicationsforunconventionalreservoirsmoregenerally,becauseitisabletodistinguishlowporosityandpermeabilityzonesthatarepotentiallyproductivefromthoseunprospectivezoneswithnegligiblereservoirquality.