学科分类
/ 4
70 个结果
  • 简介:

  • 标签:
  • 简介:刚刚在2002年10月获得“全国十大轿车品牌”称号的“奇瑞”家族最近又有新动作:集大气、儒雅、洒脱于一身的奇瑞EL(标配型)、EL+(豪华配置型)加长款隆重登场。与标配型相比豪华配置型增加了电动天窗和可调式方向盘,两款车的售价分别是人民币12万多和13万多。

  • 标签: 轿车 奇瑞EL 奇瑞EL+ 奇瑞加长型
  • 简介:ThesuccessivefoundingofELTmailinglistssincethemid-90shaveprovidedlanguageteachersworldwidewithacheap,ef-ficientandinformativeteachingtool.Thispaperoffersanintro-ductiontothemajorELTlistsandadiscussionofthesignifi-canceofthemailingliststoourteachingwork,academicre-searchandself-development.Adviceisalsogivenonhowtotakebetteradvantageofthispowerfuleducationalinstrument.

  • 标签:
  • 简介:ApossiblemechanismisputforwardinthispaperforElNinoeventsfromtheviewpointofplatetec-tonicsandoceanicgeology.Anumberofthedataarecitedtoillustratetheviewsthatsea-bottomvolcanicac-tivitiesandhotspringsmaycauseElNinoevents.

  • 标签: VOLCANIC OCEANIC EQUATORIAL geology CITED illustrate
  • 简介:ElNinoaswellastheSouthernOscillationisoneofthestrongestsignalsknownsofaroverclimaticnoiseininterannualvariationsoftheatmosphereandoceans.Agreatnumberofstudieshaveshowndefinitelyrelationshipsbe-tweentheeventsandclimaticanomaliesinChina.Inthisreview,observationalresultsobtainedintherecentseveralyearsarefirstsummarized.ThenthepossiblephysicalmechanismsontheinfluenceofElNinoarepresentedand,finally,theassociatedproblemsarediscussed.

  • 标签: El Nino DROUGHT and FLOOR TYPHOON
  • 简介:Inthispaper,byusingspectralmethod,themonthly-andseasonal-scaleatmosphericdiabaticheatflow(ADHF)departurefieldsarediagnosedintheperiodof1964—1985with6ElNinoyearsand6anti-ElNinoyearsovertheNorthernhemisphere(NH).TheresultsshowthatElNinophenomenahavepronouncedinfluenceontheADHFdepar-turefields.Theresponseofatmosphereexhibitsapreferredarrangementoforganizingpositiveandnegativedeparturecentersatlow,middleandhighlatitudes.Inanti-ElNinoyears,theresponsehasthesameformsasinElNinoyears,butdeparturecentersareoppositeinphase.Furthermore,ADHFdepartureshowslow-frequencyoscillationinElNinoyearsandanti-ElNinoyears.ThecenterofdifferenceindeparturebetweenElNinoandanti-ElNinoyearsdisplaysabi-monthlyoscillation.Finally,throughair-seacorrelationanalysis,itispointedoutthattheSSTanomalyisthemostimportantcauseforADHFanomaly.

  • 标签: EL Nino and anti-El Nino ADHF
  • 简介:EstearticulosetratadeuncomentariodelescritorMarioVargasLlosa,quientueelganadordelPremioNobeldeliteraturaenelafio2010,ylasrelacionesentreel"RealismoEstructural"yelescritor.E1articulocontieneunanālisisdealgunasobrasrepresentativasylastécnicasutilizadasenellas.Enestetrabajo,tratodeanalizarlastbr-masnarrativasutilizadasensusobras,tantolaestructuracomootrastécnicasnarrativas,múslacombinacindelorealyloficticio,conelfindedisfrutardelasartesdellenguejedeMarioVargasLlosaparadescribirunahistoriareal,enformafictional.

  • 标签:
  • 简介:Inthispaper,theinfluenceofElNi?oeventontheMadden-JulianOscillation(MJO)overtheequatorialPacificisstudiedbyusingreanalysisdataandrelevantnumericalsimulationresults.ItisclearlyshownthatElNi?ocanreducetheintensityofMJO.ThekineticenergyofMJOovertheequatorialPacificisstrongerbeforetheoccurrenceoftheElNi?oevent,butitisreducedrapidlyafterElNi?oeventoutbreak,andtheweakenedMJOevencancontinuetothenextsummer.Theconvectionoverthecentral-westernPacificisweakenedinElNi?owinter.ThepositiveanomalousOLRoverthecentral-westernPacifichasoppositevariationinElNi?owintercomparingtothenon-ENSOcases.TheverticalstructureofMJOalsoaffectedbyElNi?oevent,sotheoppositedirectionfeaturesofthegeopotentialheightandthezonalwindinupperandlowerleveltropospherefortheMJOarenotremarkableintheElNi?owinterandtendtobebarotropicfeatures.ElNi?oeventalsohasaninfluenceontheeastwardpropa-gationoftheMJOtoo.DuringElNi?owinter,theeastwardpropagationoftheMJOisnotsoregularandunanimousandthereexistssomeeastwardpropagation,whichisfasterthanthatinnon-ENSOcase.DynamicanalysessuggestthatpositiveSSTA(ElNi?ocase)affectstheatmosphericthicknessovertheequatorialPacificandthentheexcitedatmosphericwave-CISKmodeisweakened,sothattheintensityofMJOisreduced;thecombiningofthebarotropicunstablemodeintheatmosphereexcitedbyexternalforcing(SSTA)andtheoriginalMJOmaybeanimportantreasonfortheMJOverticalstructuretendingtobebarotropicduringtheElNi?o.

  • 标签: 厄尔尼诺事件 赤道太平洋 MJO ENSO 垂直结构 强度降低
  • 简介:Phosphorus(P)fractionsandtheirbioavailabilityinthesedimentsfromElMexBayandLakeMariutinEgyptwereinvestigatedusingdifferentchemicalextractionmethods.Sodiumbicarbonate(NaHCO3)extractableP(Olsen-P)wasthelargestfraction(14.42%),followedbyalgalavailableP(AAP)(3.56%),watersolubleP(WSP)(0.79%),andreadilydesorbableP(RDP)(0.06%)forElMexBay.WhileAAPcontributed9.94%tototalPinsedimentsfromLakeMariut,Olsen-P8.53%,WSP4.11%,andRDP0.92%.SummationofthebioavailablePfractionsdidn'texceedthesedimentqualityguidelines,and,therefore,Pdoesn'trepresentadangertomarineorganisms.CorrelationcoefficientsshowedthatnoapparentrelationsbetweentotalP(TP)andiron(Fe),aluminum(Al),andcalcium(Ca)inthesediments.Furthermore,Fe:Pratiowaslessthan15indictingthattherewasnotenoughFeinsurfacesedimentstobindtoPatmostofthesamplingsites.ThepositivecorrelationbetweenTPandorganicmatter(OM)forLakeMariutandElMexBaysedimentsindicatedthattheorganicmattercontentofthesedimentwasausefulpredictorofthetotalphosphoruscontent.DatafromthisstudyconstituteabaselineofphosphorusbioavailabilityinsedimentsfromElMexBayandLakeMariutandcouldbeusedasareferenceforfuturestudiesonthechangesofbioavailableandresidualphosphorusfractionsovertime.

  • 标签: PHOSPHORUS BIOAVAILABILITY SEDIMENTS El MEX BAY
  • 简介:IthaslongbeenacknowledgedthattherearetwotypesofElNioevents,i.e.,theeasternPacificElNio(EE)andthecentralPacificElNio(CE),accordingtotheinitialpositionoftheanomalouswarmwateranditspropagationdirection.Inthispaper,theoceanicandatmosphericevolutionsandthepossiblemechanismsofthetwotypesofElNioeventswereexamined.ItisfoundthatalltheElNioevents,CEorEE,couldbeattributedtothejointimpactsoftheeastwardadvectionofwarmwaterfromthewesternPacificwarmpool(WPWP)andthelocalwarmingintheequatorialeasternPacific.BeforetheoccurrenceofCEevents,WPWPhadlongbeeninastateofbeinganomalouswarm,sothestrengthofeastwardadvectionofwarmwaterwasmuchstrongerthanthatofEE,whichplayedamajorroleintheformationofCE.WhilefortheEEevents,mostcontributioncamefromthelocalwarmingoftheequatorialeasternPacific.ItisfurtheridentifiedthattheimmediatecauseleadingtothedifferenceofthetwotypesofElNioeventswastheasynchronousvariationsoftheSouthernOscillation(SO)andtheNorthernOscillation(NO)asdefinedbyChenin1984.WhenthetransitionfromthepositivephaseoftheNO(NO+)toNO-waspriortothatfromSO+toSO-,therewouldbeeastwardpropagationofwesterlyanomaliesfromthetropicalwesternPacificinducedbyNOandhencethegrowthofwarmseasurfacetemperatureanomaliesinWPWPanditseastwardpropagation.ThiswasfollowedbylaggedSO-inducedweakeningofsoutheasttradewindsandlocalwarmingintheequatorialeasternPacific.ThesewereconducivetotheoccurrenceoftheCE.Onthecontrary,thetransitionfromSO+toSO-leadingthetransitionofNOwouldfavortheoccurrenceofEEtypeevents.

  • 标签: 厄尔尼诺 类型 赤道东太平洋 连接 振荡 传播方向
  • 简介:ElSoplao露头,最近在北西班牙(Cantabria)发现的早白垩纪琥珀存款,被显示了是有到目前为止在西班牙被发现了的节肢动物包括的琥珀的最大的地点。为琥珀,孢粉学,taphonomy和那些以前出版了的节肢动物bioinclusions补充的biogeochemistry此处提供的相关数据。数据的这个集合为ElSoplao沉积物的琥珀建议至少二植物的来源。?rst(类型A琥珀)强烈支持与Cheirolepidiaceae有关的来源,并且第二(类型B琥珀)显示出非特定的针叶树biomarkers。有Frenelopsis的琥珀离开的类型(Cheirolepidiaceae)的分子的作文的比较强烈建议一种生物化学的亲密关系和普通植物的起源。初步的palynologlcal研究显示地区性的高分类的差异,主要蕨类植物孢子和裸子植物花粉谷物。根据初步的palynologlcal数据,这个区域由在副热带的气候下面使适应一个旱季的针叶树森林被住在。在一样的床上与琥珀联系的丰富的charcoalified木头是很可能加植物表皮支持了树脂生产和崽,和琥珀的随后的大累积的集中的侵蚀的paleofires的证据。另外,第一次在石块记录,在琥珀的bioinclusions被报导的charcoalified植物纤维。另外的相关taphonomic数据在两个都显示长暴露在上的一些琥珀片的表面上是serpulids和bryozoans的非凡的存在海洋或略有盐味水并且琥珀的一个混合集合。最后,昆虫bioinclusions的新调查结果,他们中的一些在石块记录不平常或显示出显著改编,被报导。在结论,为ElSoplao琥珀露头的起源的一种记录情形被提供。

  • 标签: 琥珀色 厄尔尼诺 早白垩世 西班牙 露头 审查
  • 简介:从原理和实测记录两方面,对比分析了EN型与EL型风仪的差异,以及造成差异的原因。

  • 标签: EN型 测风 发电机 输出电压
  • 简介:Characteristic modemodel of tropical Pacific Ocean and dynamic mechanism of El NinoZhangXiangdong;HuangShisong;andZhangJing(R...

  • 标签: The PACIFIC model EL Nino
  • 简介:ThetropicalPacifichasbeguntoexperienceanewtypeofElNio,whichhasoccurredparticularlyfrequentlyduringthelastdecade,referredtoasthecentralPacific(CP)ElNio.Variouscoupledmodelswithdifferentdegreesofcomplexityhavebeenusedtomakereal-timeElNiopredictions,buthighuncertaintystillexistsintheirforecasts.ItremainsunknownastohowmuchofthisuncertaintyisspecificallyrelatedtothenewCP-typeElNioandhowmuchiscommontoboththistypeandtheconventionalEasternPacific(EP)-typeElNio.Inthisstudy,thedeterministicperformanceofanElNio–SouthernOscillation(ENSO)ensemblepredictionsystemisexaminedforthetwotypesofElNio.EnsemblehindcastsarerunforthenineEPElNioeventsandtwelveCPElNioeventsthathaveoccurredsince1950.Theresultsshowthat(1)theskillscoresfortheEPeventsaresignificantlybetterthanthosefortheCPevents,atallleadtimes;(2)thesystematicforecastbiasescomemostlyfromthepredictionoftheCPevents;and(3)thesystematicerrorischaracterizedbyanoverlywarmeasternPacificduringthespringseason,indicatingastrongerspringpredictionbarrierfortheCPElNio.Furtherimprovementstocoupledatmosphere–oceanmodelsintermsofCPElNiopredictionshouldberecognizedasakeyandhigh-prioritytaskfortheclimatepredictioncommunity.

  • 标签:
  • 简介:统计、典型年的作文方法被用来与ElNino和LaNifia事件在关系学习西北太平洋台风活动。结果显示台风趋于在ElNifio年里不活跃并且在拉·尼娜年和它里活跃也依赖于事件的发作和台风的开始的区域。与在频率和海面温度(SST)之间的ElNifio和拉·尼娜年和时间落后关联里的台风活动的频率的统计特征。有用信息被为台风出现的预言提供。另外,单个价值拆卸(SVD)方法被使用学习在重力势领域和SST地之间的关联。结果证明在ElNino年里的由空至海的联合是相反的让台风发展,它与一个更小的数字发生。相反的状况与拉·尼娜年被发现。

  • 标签: TYPHOON EI Nino and La NINA