简介:这研究调查了通过确定、概率的预报在华南在2007年4月23日与伪静止的前面联系的一根嚎啕线的可预测性。我们的结果证明嚎啕线模拟是很敏感的在物理parameterization计划从水平分辨率和无常为错误建模。至少一种10-km格子尺寸是必要的高雅地捕获这根嚎啕线。有4.5km的一种格子尺寸的模仿的嚎啕线对相对象微视物理学和行星的边界层那样的另外的物理计划的长波浪的放射parameterization计划很敏感。为从20~5km的一种格子尺寸,一个积云parameterization计划降级了嚎啕线模拟(相对关掉它),与到格子尺寸的更严重的降级<10km比>10km。到起始的错误的嚎啕线模拟的敏感通过整体预报被调查。嚎啕线的整体模拟的表演对起始的错误很敏感。约15%整体成员高雅地捕获了嚎啕线的进化,25%失败了,并且60%打乱了嚎啕线。用物理parameterization的不同联合,为不同成员的计划能改进概率的预报。这个案例的铅时间仅仅是一些小时。错误生长清楚地与潮湿的传送对流开发被联系。当起始的错误逐渐地被减少时,在嚎啕线模拟的性能的线性改进被观察,与来自起始的潮湿地的最大的贡献。
简介:Thebed-loadmovementandtheevolutionoftheChangjiang(Yangtze)EstuaryarestudiedbyusingthegeographicinformationsystemandtheremotesensingimageprocessingsoftwareAnalysisontheerosionandsiltationoftherivermouthisperformedfortheperiod1988-2000.Thepossiblelocationandthicknessofthefuturedepositionareasintheestuarinechannelsarepredicted.
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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。
简介:ThecoastalareaofsouthernChinaisfrequentlyaffectedbymarinemeteorologicaldisasters,andisalsooneofthekeyareasthatinfluencetheshort-termclimatechangeofChina.Duetoalackofobservationalfacilitiesandtechniques,littlehasbeendoneinthisareaintermsofoperationalweathermonitoringandscientificresearchonatmosphericandmarineenvironment.WiththesupportofChinaMeteorologicalAdministration(CMA)andGuangdongMeteorologicalBureau(GMB),theMarineMeteorologicalScienceExperimentBase(MMSEB)atBohe,MaominghasbeenjointlyestablishedbyGuangzhouInstituteofTropicalandMarineMeteorology(GITMM)andMaomingMeteorologicalBureau(MMB)ofGuangdongProvinceafterthreeyearsofhardwork.Ithasbecomeanintegratedcoastalobservationbasethatisequippedwithacompletesetofsophisticatedinstruments.Equipmentmaintenanceanddataqualitycontrolprocedureshavebeenimplementedtoensurethelong-term,steadyoperationoftheinstrumentsandtheavailabilityofhighqualitydata.PreliminaryobservationsshowthatthedataobtainedbytheMMSEBrevealmanyinterestingfeaturesintheboundarylayerstructureandair-seainteractioninsuchdisastrousweatherastyphoonsandseafog.TheMMSEBisexpectedtoplayanimportantroleinthescientificresearchofdisastrousweatherrelatedtomarinemeteorology.
简介:AU.S.deploymentofaTHAADsysteminSouthKoreawouldprovethatitsanti-missilesystemisatleastpartlyaimedatoffsettingChina’sdeterrentcapabilities.ATHAADplatformwilldolittletoimproveSouthKorea’smilitarydeterrencewithNorthKorea;ratheritwillmeanitwillpushChinatotakecountermeasures,usheringinanewarmsraceinNortheastAsiaandposingaseveretesttoregionalsecurity.
简介:Integratedstudiesofverticalsedimentarysequences,grainsizes,andbenthicforaminiferaandostracoda,incombinationwithAMS14Cdating,and210Pband137CsanalysiswerecarriedoutinthreevibracorestakenfromtheareaofrelictdepositsonthewesternSouthYellowSea.Therelictsands,whichareabout0.4mthick,overlieontheEarlyHolocenecoastalmarshortidalflatdepositswithanevidenterosionalinterfaceinbetween.Themiddleandupperpartsorsometimesthewholeoftherelictsandshavebeenreworkedunderthemoderndynamicenvironment.Thesedimentationratevariesbetween0.20–0.30cmyear-1.Therelictsandsshowabimodalgrain-sizedistributionpatterninfrequencycurves,withasharppeakinthecoarsefractionbetween3Φand4Φandasecondarypeakinthefinefractionofabout7Φ.Ofthebenthicforaminiferalandostracodassemblages,thereworkedrelictsandsarecharacterizedbythemixingofthenearshoreeuryhalineshallow-waterspeciesanddeeperwaterspecies.TheerosionalinterfaceatthebottomoftherelictsandsisconsideredasaregionalravinementsurfaceformedduringthetransgressionintheEarlyHoloceneduetoshorefaceretreatinglandwards.Therelictsandswereaccumulatedontheravinementsurfaceduringthetransgressioninthedeglaciationperiodaslagdepositsafterwinnowingandreworkingbymarinedynamicprocesses.Andthesecondarypeakoffinefractioninthefrequencycurvefortherelictsandssuggeststheinputoffine-grainedsedimentsduringthereworkingprocess.Astheconclusion,therelictsandsinthestudyareaareinterpretedasatypeofreworkedrelictsediments.
简介:由于山论的阻塞,弱风醒来在华南海发生在夏天离开东北越南。在风下面醒来,温暖的水从两个高分辨率的卫星数据和水道学的观察被观察。温暖的水的wake在6月形成,继续在7月和8月成熟,开始在9月腐烂,并且消失在10月。温暖的水也弄醒表演柔韧日报它在日子期间加强并且在夜里变弱的变化。温暖的水醒来能通过导致风的混合被产生并且热(潜伏的热流动)过程。在这份报纸,一个混合的层模型被用来分别地在季节、日报的timescales上评估二个过程的相对重要性。结果比导致风的混合在季节的timescale上处理的证明热过程做更大的贡献到wake,当时温暖的水醒来被导致风的混合统治过程在上一日报timescale。