简介:山西水库地震是在最近的年,有少数的一个区域和更弱的地震里的南部的浙江省的重要地震事件。seismicity显示出一个断断续续的特征和组分发。地震网络定位的震中没证明一个占优势的方向和seismogenic结构不是清楚的。在学习,非线性的想象的波浪旅行时间方程被线性化并且解决,并且来源位置,起始的想象的速度和旅行时间剩余被获得。然后,由作为时间加倍标准差,剩余,从经度产生的最大的错误,纬度,深度和想象的速度被计算。基因人口用最大的错误被组织,地震地点的结束结果被基因算法获得。有地震大部分是的表演专注于一架在垂直附近的、向西北面向的差错飞机的这个方法的山西水库地震的重定位的结果,和在飞机和到期的北方,到期的东方和垂直方向的正常之间的包括的角度是46~,44~,并且87~分别地。结果与小地震的全面差错飞机答案的一致。地震的平均深度是4.7km,最大的深度9.5kin,和最小的深度1.7km。震中显示出向西北的狭窄的banded分布,并且焦点的深度沿着西北方向增加了。在长带的西北结束长有大约3.5km的不连续的地震差距。使用Borun模型获得的来源参数的特征不与构造地震的显著地不同。地震压力落下关于0.33MPa,并且平均压力落下是0.88MPa。根据压力掉空间分发,在长带的西北结束的地震断绝片断在一个低压力落下地区。
简介:Spilite-keratophyreisakeymemberoftheShuangxiwuGroupvolcanicseriesinZhejiangProvince.PresentedinthispaperarethereliableSm-Ndinternalisochronage(1012±18Ma,∈Nd(T)=4.4±0.1)andwhole-rockRb-Srisochronage(972±40Ma,Isr=0.70327±8)obtainedforthefirsttimebytheauthors.FromtheavailableNd,SrandOisotopedatainconjunctionwiththemajorandtraceelementsdataitissuggestedthattheXiqiuspilite-keratophyreistheproductofisland-arcvolcanismduringthelateMiddleProterozoic.
简介:Onthebasisofmineralparagenesisandthechemistryandhomogenizationtemperaturesoffluidinclusions,thephysicochemicalparameterswerecalculatedfortheformationoftheDalingkouAg-Pb-ZudepositinZhejiang.Fromtheearlytothelatestageofmineralizationtheore-formingtemperatureveriationwasfoundtobe298.5℃→267.0℃→217.6℃→167.3℃,withacorrespondingpHchangeof3.0-5.8→6.1→6.7→5.0→7.3.Thepressurechangedfrom403.8to128.5atm,andlogfS2-9.9→-11.2→<-15;logfO2<-44→-45.6--42.6→>-44.2;andlogfCO2around-1.55.Inconjunctionwithgeologicalobservations.thedepositisconsideredtobeofmeso-epithermalorigin,i.e.,itwasformedaftercontinentalvolcanic-subvolcanicactivity.ThemajorfactorsaffectingoreprecipitationarethedecreasingtemperatureandtheincreasingpHofore-formingsolutions.
简介:学习乍见陆地在二上被执行台风Haitang和Matsa,它在2005严重影响了浙江省。第一,二导致台风的大雨的类似和差别被比较,他们俩带了强壮的大规模降水,降雨的最大的中心位于北方方面,这被指出乍见陆地地点。在福建上乍见陆地做,Haitang是比在紧张的Matsa弱的,但是在降雨超过了它。然后与紧张,动人的速度,台风的结构,发行量和地面的焦点,二台风相关的大雨被比较并且分析。降雨的不均匀的分发是的结果表演仔细与台风的结构有关自己,潮湿交通和mesoscale地面。与南方方面相对照,北方方面更热、更湿,水蒸汽也是更丰富的。Haitang导致的更多的降雨的现象与下列原因相关。降雨增加的导致的入侵的冷空气,削弱的动态领域和更慢的运动两个都有益于降水。为最后部分,在浙江上的空气质量的冷特征也是为雨的一个有利因素。
简介:TheYangtzeplate,extendingfromeasttowestinsouthernChina,wasformedabout800Maago.SincetheSinian,twoaulacogenstrendingeast-northeastandconnectedattheeastends,havebeeninitiatedintheJiangsu-Zhejiang-Anhuiregionontheeastmarginoftheplatewithasedimentarysequenceupto10,000minthickness.Atalaterstageofsedimentologicevolution,flyschandmolassewereproduced.TheflysehwasaccumulatedintheLateOrdovician,whenthetwoaulacogensbecamebaysthatopenedtotheeast;theelasticmaterialswerederivedfromtheYangtzeoldlandonthenorthernandsouthernsidesofthebasins.ThemolassewasaccumulatedfromtheterminalLateOrdoviciantotheMiddleOrdovician;theclastiematerialscamefromanupliftedorogenicbeltintheeast.Thisindicatesthatamajorchangeinthetectonicpatternofthebasinshastakenplace.
简介:Basedonthedataaboutsedimentaryfaciesandpalaeogeography,thispaperprovestheexistenceoftheCathaysia(thepartineasternZhejiangandnorthernFujian,thesamehereinafter)andmakesasurveyaboutitspalaeogeographysinceSinianPeriod.ItalsodiscussestheevolutionofthetectonicenvironmentofthisregionduringPhanerozoicEon,accordingtothefeaturessuchasthecompositionofsandstonesderivedfromtheoldlandandalkalinityofvolcanicrocksandsoon.ContinuousupliftingwasmaintainedinCathaysiaduringSinianPeriodandPaleozoicEra,typicallywithnosignificanttectono-magmaticactivitybeingobserved.ItsnorthwesternmarginbelongstothetypeofpassivecontinentalmarginduringthemiddleandlatephaseofCaledonianCycle.ItshowedthecharacteristicsofasteadycontinentinlatePaleozoicera,butwasturnedquicklyintoanactivecontinentalmarginafterthemiddleJurassicperiod.
简介:Atwo-dimensionalnumericalmodelisconstructedtostudytheinteractionbetweenthecoastalupwellingandthecoastalfrontoffZhejiangcoastinsummer.Inthef-planemodel,theshelftopography,continuousstratification,andRichardsonnumber-dependenteddycoefficientsareconsidered.Theresultsshowthatthecoastalup-wellingoffZhejianginsummercanbedividedintotworegions,thenearshoreone(RegionA)andtheoffshoreone(RegionB).InRegionA,thealongshorewindstresshasmoreimportanteffectonthecoastalupwellingwhileinRegionB,theupwellingismainlyinducedbytheTaiwanWarmCurrent.TheresultsalsosuggestthattheformationofcoastalfrontoffZhejianginsummeriscloselyrelatedtothestrengthofthecoastalupwellinginRegionA.
简介:Accordingtothehydrographicandsedimentdata,thedynamicsedimentationcharacteristicsaredealtwithbasedontheanalysesofthehydra-dynamicsandthesuspendedandbottomsedimentcharactersinXiashimen(XSM)straitchannelmouthareaintheeasternpartofZhoushanIslands.Itispointedoutthatbothofthechangesofthehydra-dynamicsandthefinesedimentsupplyfromChangjiangestuaryresultinthesedimentationmechanismofmainlythefinesedimentsflocculatingdepositionandsecondlythecoarsersedimentdepositioninsinglegrain.Thedynamicsedimentationcharacteristicsaredevelopedundertheactionofthedepositionmechanismandreworkingdifferencesindifferentbedformareas.
简介:Threethird-ordersequencesandaboutonehundredhigh-frequencycyclesorMilankovitchcycleswithintheLatePermianChangxingiantoEarlyTriassicGriesbachianareidentifiedintheMeishanSectionofChangxing,ZhejiangProvince,southernChina,thecandidatestratotypesec-tionoftheglobalPermo-Triassicboundary,basedonadetailedstudyofthebiological,ecologicalandhigh-resolutionallochthonouscyclicevents,microfaciesanddepositionalsystems.Furthermore,thestackingpatternofthedepositionalsystemsacrossvariousChangxingianandGriesbachiansedimentaryfaciesoftheLowerYangtzeandthesequencestratigraphicframeworkareoutlinedwiththeMeishansectionastheprincipalsection.Inthispaperthehabitattypesoffossilbiotaareappliedtosemiquantitativepalaeobathymetryandthestudyofrelativesealevelchanges.
简介:这份报纸系统地分析了36地震群在并且在江苏省附近,总结了他们的特征并且讨论了在earthquske群和随后的强烈地震之间的关系。它也为先驱的地震群分析了判断标准。在江苏省的地震群在几个区域被集中。他们中的大多数具有大小ML2。0~3。9。为大多数地震群,地震的数字是不到30。为大约55%地震群的时间持续时间是不到15天。一地震群的最大的大小不与地震和时间持续时间的数字成正比。有78%地震群对应于M4的即将来临的地震。6在哪个therere57%发生在一年里,这显示出一个中期、短期的标准。在地震群和未来地震之间的距离分散地被散布。没有地震,发生在象地震群的一样的地点。在大小和未来地震和地震群的紧张的相应的率之间没有好关联。也在在地震群和相应的率的地震的数字之间没有好关联。学习也显示出那对使用在上面它的更好或对整个联合决定地震群的类型。
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简介:FromthesurveyofcoastalresourcesandthefunctionalzoingofthemarineandcoastsalareasofShandongProvince,theauthorshavecollectedagooddeelofpracticaldata,andatthesametime,foundoutsomeirrationalphenomenaintheexploitationandutilizationofcoastalresources.TaKingthecoastalareaofShandongProvinceasanexample.Thispapermakesananalysisontherationalutilizationofcoastalresources.
简介:从在Tiantai和Ninghai县的Shengxian形成的上面的中新世的存款的石块竹子叶子和花粉,东方浙江,中国在亚洲代表一个稀罕记录。特殊pseudopetiole和叶片和花粉孔的清楚地变厚的体环的平行脉络把他们放在亚科Bambusoideae。当属于类Bambusium和二新种被描述,词法分析支持这些石块叶子的决心。BambusiumlatipseudopetiolusQ.J王etB.N阳光sp。nov。在长度,平行静脉上的几脉管的捆,和5-8在宽度和0.40厘米有0.23厘米的显然宽的pseudopetiole中肋的双方上的侧面的静脉。BambusiumlongipseudopetiolusQ.J王etB.N阳光sp。nov。在中肋的双方上在宽度,pseudopetiole上的几脉管的捆,和6根侧面的静脉在长度和0.10厘米有0.60厘米的显然长的pseudopetiole。从一样的层的花粉谷物提供竹子的另外的证据。他们被32.0-51.0μm在exine表面上在直径,在有宽广变厚的体环2.5-3.5μm在附近的直径的圆毛孔3.0-4.0μm,和几明显的第二等的褶层描绘。词法分析导致他们的任务到GraminiditesbambusoidesStuchlik。这些石块为在中国的竹子phytogeography的学习是重要的。他们证明在东南的中国有竹子成长在期间晚中新世并且在浙江的竹子开始晚不多样化比晚中新世。在有来自另外的地方的竹子石块的联合,看起来,竹子越过南部的中国有宽分布在期间中新世,从西南的Yun'nan到东南的浙江。
简介:IntroductionSinceearthquakeoccurrence,theyhaveprovidedgoodopportunitiesfordiscoveringtheundergrounmysteryandrecognizingearthquakes—thenaturephenomenon.Alargeearthquake’soccurrence,ofcourse,willbringhumankindwithlargedisaster.Withrecognizantenhance,wecanestablishmoreeffectivemeasureforalleviatingseis
简介:CroundverticaldeformationinearthquakeofGonghe,QinghaiProvinceShou-WenGONG(巩守文)andFeng-YingGUO(郭逢英)(SecondCrustalDeformationMo...