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简介：OnOctober27,2001,alargeearthquakewithMs6.0,namedtheYongshengearthquake,occurredalongtheJinshajiangsegmentofChenghaifaultinYongshengCounty,YunnanProvince.ItisthelargesteventtooccuralongtheChenghaifaultinthelast200years.Theseismo-geologicalsurveyshowsthattheseismogenicfault,whichistheJinshajiangsegmentofChenghalfault,takesleft-lateralstrike-slipasitsdominantmovementpattern.Accordingtodifferencesinverticalmotion,motiontime,landformsandscales,theChenhalfaultcanbedividedintoeightsegments.TheJinshajiangsegmenthasaverticaldislocationrateof0.4mm/a,farlowerthanthemeanrateoftheChenghaifault,about2.0mm/a.It'sdeducedthatthetwosidesofJinshajiangsegment'stuck'tightlyandhinderedthestrike-slipoftheChenghaifault.ThestrongearthquakedistributionbeforethiseventshowsthattheJinshajiangsegmentwasintheseismicgap.TheChenghaifault,asaboundaryoftectonicsub-blocks,makestheNorthwestYunnanblockandtheMiddleYunnanblockmoveclockwise,andtheirmarginsmoveoppositelyalongtheChenghalfault.InthemotionprocessoftheChenghaifault,structuralhindranceandtheseismicgapofstrongearthquakesarepropitioustotheconcentrationandaccumulationofstructurestress.Asaresult,theYongshengMs6.0earthquakeoccurred.TheSujiazhuang-ShangangfusegmentissimilartotheJinshajiangsegmentwithalowverticalmotionrateof0.3mm/aandintheseismicgap.Soit'spostulatedthatthesegmentmaybecomeanewstructurehindrance,andtheYongshengMs6.0earthquakemaytriggertheoccurrenceoffuturelargeearthquakesalongthissegment.

简介：Athree-dimensional(3-D)oceanmodeliscoupledwithatwo-dimensional(2-D)seaicemodel,torevisitanonlinearadvectionmechanism,oneofthemostimportantmesoscaleeddygenesismechanismsinthemarginalicezone.Two-dimensionaloceanmodelsimulationssuggestnonlinearadvectionmechanismismoreimportantwhenthewatergetsshallower.Insteadofconsideringtheoceanasbarotropicfluidinthe2-Doceanmodel,the3-Doceanmodelallowstheseaicetoaffectthecurrentdirectlyinthesurfacelayerviaocean-iceinteraction.Itisfoundthatbothmesoscaleeddyandseasurfaceelevationaresensitivetochangesinawaterdepthinthe3-Dsimulations.Theverticalprofileofacurrentvelocityin3-Dexperimentssuggeststhatwhenthewaterdepthgetsshallower,thecurrentmovefasterineachlayer,whichmakestheseasurfaceelevationbenearlyinverseproportionaltothewaterdepthwiththesamewindforcingduringthesametime.Itisalsofoundthatbecauseoftheverticalmotion,themagnitudeofvariationsintheseasurfaceelevationinthe3-Dsimulationsisverysmall,beingonly1%ofthechangeinthe2-Dsimulations.Anditseemstheverticalmotiontobetheessentialreasonforthedifferencesbetweenthe3-Dand2-Dexperiments.

简介：CloudresolvingWeatherResearchandForecasting(WRF)modelsimulationsareusedtoinvestigatetropicalcyclone(TC)genesisefficiencyinanenvironmentwithanearbottomvortex(EBV)andanenvironmentwithamid-levelvortex(EMV).Sensitivityexperimentsshowthatthegenesistimingdependsgreatlyoninitialvorticityverticalprofiles.Thelargertheinitialcolumnintegratedabsolutevorticity,thegreaterthegenesisefficiencyis.Giventhesamecolumnintegratedabsolutevorticity,abottomvortexhashighergenesisefficiencythanamid-levelvortex.Acommonfeatureamongtheseexperimentsistheformationofamid-levelvorticitymaximumpriortoTCgenesisirrespectivewheretheinitialvorticitymaximumlocates.BoththeEMVandEBVscenariossharethefollowingdevelopmentcharacteristics:1)atransitionfromnon-organizedcumulus-scale(~5km)convectivecellsintoanorganizedmeso-vortex-scale(~50to100km)systemthroughupscalecascadeprocesses,2)theestablishmentofanearlysaturatedaircolumnpriortoarapiddropofthecentralminimumpressure,and3)amultipleconvective-stratiformphasetransition.Agenesisefficiencyindex(GEI)isformulatedthatincludesthefollowingfactors:initialcolumnintegratedabsolutevorticity,vorticityattopoftheboundarylayerandverticallyintegratedrelativehumidity.ThecalculatedGEIreflectswellthesimulatedgenesisefficiencyandthusmaybeusedtoestimatehowfastatropicaldisturbancedevelopsintoaTC.

简介：环球仪器携同最新推出的GenesisGC-120Q，在NEPCON中国2007展会上，为客户演示可满足激烈竞争环境需要的解决方案，及Genesis和Advantis平台的灵活性。

简介：LaoyalingstratiformcopperdcpositislocatcdlokmeastofTonglingcity,AnhuiProvlncc.ItisatypicalstratiformdcpositinthclowcrandmiddlearcaofYangtzorivcr,farfromplutonicrocksandhostedinPcrmiansilicalites.Thcorcbodicsoccuraslaycr,likelayerandlcnsc,whichhavethesameoccurrcnceasstrataandbotliofthemwcrefoldcd.Ore

简介：<正>XianghualingorefieldislocatedinLingwuCounty,HunanProvince.Itliesonthein-tersectionofpoly-setstructuresandbelongstononferrousrare-polymetalminetalizationse-riesrelatedtothecrust-origingraniteinactivationregion.Thestrataoftheorefieldin-volvesCambrian（∈）,Devonian（D）andCarboniferous（C）,inwhichCambrianepimeta-morphicsandstone,D2tsandstoneandD2q-D（3x）dolomiteareconsidedastheoresource-bedoftheoredeposit.Severalhigh-replacementalstocks,whichlieabovethehiddengranitebatholithwithNNWtrending,intrudealongtheintersectionofNWandNEtrendingfaults.

简介：TheBashansuperlargebariumdeposit(withcritetype)islocatedinnortheasternSiehuanProvince.GcotcctonicallyitissituatcdinthcsoutbernpartoftheDabashangcodomespetcm’Centra1Chinadiwarcgion,onthcnorthcrnsideoftheSouthDabashanfracture.BariumbedsarehostedbythcLowcrCambrianLujiapingFormation.Themetallogeniczonec

简介：ShanjiadistrictofeastcrnHcbciProvinccislocatcdinsouthcrnlimbofEWtrcndingYanshangeodomechain,whichbe1ongstoHchuaidiwasystcmofNorthC!1inadiwarcgion.Inthestudiedarca,morethanlogolddcposits(occurrenccs)wcrcdistributed,includingShanjia,Xinglonggou,WangjiagouandWcizigougo1dMincs’Archcanmctamorphicrocksare

简介：0vcrl00pyrophylliteoccurrcnccs(dcposits,orcsp0tsandmincralisedsp0ts)havebeenfuul1dinChina-Am0ngthemab0ut90%arerelatcdtotbeacti0nofv0lcanicgas-1iquidandaccountf0rabout87Koftbcprovcdrcserves.ManylargcandsuperlarScpyr0phy1litedcp0sitsbclongtothistype.Thercf0re,pyr0phyllitedep0sitsofv0lcanicgas-1iquida1

简介：曾于今年初在纽约国际车展首展的现代战略车型一Genesis概念车于11月19日在中国广州国际车展上亮相。本次亮相是现代Genesis在海外市场继美国之后首次在亚洲亮相并与中国消费者见面。对于现代来说，Genesis是首款后轮驱动高级轿车，它是现代未来轿车生产线上的重要芋型，同时也将引领现代汽车未来的品牌形象。

简介：RareelementmineralizedgranitesoftheYanshanperiodinSouthernChinaarecharacterizedbyhighcontentsofSiO2,Na2O,O,K2O,andFandareenrichedinNb,Ta,REE,W,Sn,BeandLi.Opinionsdif-feredoverwhethertheyareofmetasomaticormagmaticorigin.Inthispaper,wepresentresultsofastudyonmeltandfluidinclusionsintopaz-albitefeldspargranitefromLimoNb-Ta-W-Sngraniteand414Ta-Lialbitegranite.Ourdata,whichcomefrom15mineralizedgranites,providestrongsupportmagmaticorigin.Meltinclusionsarerecognizedinbothtopazandquartz,andareassociatedwithprimarygas-richinclusions.CrystallitesofaNb（Ta）-bearingmineralandcassiteritearealsocommonlypresentasinclusionsinthetopaz.Multiphase（melt+fluid）inclusionsareobservedinsomequartzfromgranitesandgranite-relatedpegmatite.Meltinclusionsstarttomeltatatemperatureofapproximately540℃intopazand650℃inquartz.Finalhomogenzationtemperatureis700-900℃inquartz,700-800℃intopazand440—550℃forpri

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简介：有细密纹理的碳酸盐岩石，它广泛地发生在始新世在Shulu的阶层下垂，Bohai海湾盆，诺思中国，代表一座异乎寻常的、有细密纹理的碳酸盐水库。然而，以前的研究忽略了岩相部件和他们的形成机制的复杂性。有细密纹理的碳酸盐岩石是烃在形成并且聚在一起的典型水库。这些岩石的性质的更好的理解为评估异乎寻常的、有细密纹理的碳酸盐水库的质量是极其重要的。各种各样的岩相部件与petrographic观察和碳同位素分析的联合在这研究被区别。这些有细密纹理的碳酸盐岩石包括源自陆地，源於生物并且diagenetic材料。源自陆地的输入和生物学上导致的降水是在湖的材料的主要来源。五张岩相基于沉积特征(核心和薄节)和矿物学的数据的观察被识别：(1)像纹泥的把压成薄片的calcilutite，(2)分级把压成薄片的calcilutite，(3)interlaminatedcalcisiltitecalcilutite，(4)巨大的calcilutite，并且(5)巨大的calcisiltite-calcarenite。他们的起源被各种各样的岩相部件记录，它被物理、化学、生物的过程的相互作用控制。这研究显示基岩的岩性学是控制碳酸盐累积的关键因素。tectonics和气候能影响捱过和岩相的类型。主要生产率控制了endogenic方解石的降水。这些因素联合决定在Shulu积累了的丰富的有细密纹理的碳酸盐岩石下垂。

简介：Withanexploitationliistoryofmorctban500years,LaocliangorcdepositinLancliang,Yunnanisaparticularlylarge(possiblysuperlarge)oneofAg,Pb,Th,Cu,S,Au,etc.TectoniCally,itis1ocatedalmostinthesouthcmendofBaolangeodomespetemofWcsternYunnandiwaregion(ChenGuoda,1977)’StrataexposedintheminjngrraionareDevonisnSgn

简介：ThisstudyexaminestheseasonalvariationsoftropicalcyclogenesisovertheSouthChinaSea(SCS)usingagenesispotential(GP)indexdevelopedbyEmanuelandNolan.Howdifferentenvironmentalfactors(includinglow-levelvorticity,mid-levelrelativehumidity,verticalwindshear,andpotentialintensity)contributetothesevariationsisinvestigated.CompositeanomaliesoftheGPindexareproducedforthesummerandwintermonsoonsseparately.ThesecompositesreplicatetheobservedseasonalvariationsoftheobservedfrequencyandlocationoftropicalcyclogenesisovertheSCS.Thedegreeofcontributionbyeachfactorindifferentregionsisdeterminedquantitativelybyproducingcompositesofmodifiedindicesinwhichonlyoneofthecontributingfactorsvaries,withtheotherssettoclimatology.OverthenorthernSCS,potentialintensitymakesthelargestcontributionstotheseasonalvariationsintropicalcyclogenesis.OverthesouthernSCS,thelow-levelrelativevorticityplaystheprimaryroleintheseasonalmodulationoftropicalcyclone(TC)genesisfrequency,andtheverticalwindshearplaysthesecondaryrole.ThermodynamicfactorsplaymoreimportantrolesfortheseasonalvariationsintropicalcyclogenesisoverthenorthernSCS,whiledynamicfactorsaremoreimportantintheseasonalmodulationofTCgenesisfrequencyoverthesouthernSCS.

简介：在香港会展中心的二号演讲厅见到了久违的Genesis，一对大屏风加一对低音柱在如此大厅开声，气势不凡，吸引着一拨又一拨坐满演讲厅的听众。在繁忙节目的间隙，经凌智公司的安排，Genesis的老板GaryLeonardKoh先生向我介绍了新的Genesiso