简介:TheestablishmentoftheASEANEarthquakeInformationCenter(AEIC)wasendorsedbythe40thMeetingoftheCommitteeonScienceandTechnologyheldinOctober2000,attherequestoftheASEANSub-CommitteeonMeteorologyandGeophysics(SCMG)toobtaintheASEANStandingCommittee's(ASC)approvaltoofficiallyusethename"ASEANEarthquakeInformationCenter(AEIC)",AspartofAEICactivities,theSCMGimplementedaprojectontheASEANSeismicNetworkforRapidExchangeofStrongEarthquakeData(ASNERESED).TheprojectwasimplementedbytheASCMGwithfundingsupportfromtheGovernmentofJapanthroughtheJapanASEANCo-operationPromotionProgram(JACPP).Theaimoftheprojectistofacilitatetherapidexchangeofdataandinformationonearthquakeswithmagnitudesgreaterthan5.5ontheRichterscale,andtolinkalloftheASEANNationalSeismologicalCentersthroughtheInternettodisseminateearthquakeinformation.Forthefutureprogram,weproposeaseismicdataexchangebetweentheNationalSeismologicalCentersinASEANcountriesaswellasworldseismologicalcentersusingthefacilitiesintheAEIC,TheplanisbasicallytodevelopandupdatethesoftwareandhardwareintheNSCandAEICfordatacommunication.Torefreshourknowledgeinseismologyanddatacommunication,wearrangethetrainingsessionsforbothtopics.
简介:Italyhasalong-standingtraditionofearthquakeinvesti-gations.Seismologistscanrelyononeofthelongestandmostdetailedrecordsofhistoricalseismic#y,20yearsofhomogeneousandreliableinstrumentaldata,systematicandwidespreadactivestressdataandacomprehensivedatabaseofpotentialseismogenicsources.Herewedescribethesedatasetsanddiscusshowtheymayhelpusanticipatethelargeearthquakesofthefuture.
简介:作为要学习的区域拿欧洲的主要陆地,新卫星重力技术的潜力:追踪的satellite-to-satellite(SST)并且与SST模型一起改进地区性的重力场模型的精确性被调查。这些模型的缺点被讨论。与是的GPM98C参考,几个另外的模型,的严肃异例剩余最近的SST全球重力场模型(EIGEN系列和GGM系列),被计算并且比较。在选择区域,有期刊性质的一些系统的错误在EIGEN和GGM存在的比较表演的结果是在高度和顺序的S系列模型。没在经典严肃模型被显示出的一些信息在EIGEN和GGM的S系列模型的低、中间的度和顺序被检测。最后,SST模型的有效的最大的度和订单被建议。
简介:Dongpu下垂位于Bohai海湾盆的南方,中国,并且有丰富的油和煤气的储备。迄今为止,没有它的地热的地的系统的文档。这研究测量了岩石从47口井的324个核心的热电导率,和计算岩石为不同形成的热电导率。地热的坡度和陆上的热流动从523口井在892形成严峻数据的基础上为192口井被计算。结果证明Dongpu下垂由在稳定、活跃的构造区域之间的一块中等温度的地热的地被描绘,与32.0°C/km的一个平均地热的坡度和65.6mW/m2的陆上的热流动。在Dongpu的地热的领域下垂被Changyuan,黄河,和Lanliao地下室差错显著地控制。他们在Paleogene发展了,Dongying运动发生在Dongying形成depositional时期。地热的地分发有一个类似的特征到Dongpu的构造框架下垂,也就是二subsags,一个高举,一个陡峭的斜坡和一个轻轻的斜坡。油和煤气的分发仔细与现在的地热的领域被联系。工作可以为重建提供限制在Dongpu的热历史和当模特儿的来源岩石成熟进化下垂。
简介:Themercurycontentin158fishesand28musselsintheSecondSonghuariverweredetected.Therangeofmercuryconcentrationsinfishesandmusselswas0.02-0.66mg/kgand0.002-0.056mg/kg,respectively.Thehistorychangeofmercurycontentinfisheswasanalyzedinthispaper.Fromupstreamtodownstream,theaveragemercuryconcentrationsinfishesincreasedwiththeincreaseofthedistancetotheheadstream,thendecreasedinthedownstreamofWujiazhantown(samplingsite).Thefactilluminatedthatthesourceofmercurycontaminationwasmercuryinsediment.Inthedifferentspeciesoffishes,themercuryconcentrationinParasiburusasvtuswasthehighestandtheorderofmercurydistributioninfisheswas:themercuryvalueinfishesintheriverbottom>thatinfishesinthesurfaceandthatinpredaciousfishes>thatinherbivorousfishes.Intheinvestigation,therewereamountoffisheswhosemercuryvalueexceededthecriterionforthatinfishesthatsuggestedthatthemercurycontaminationintheSecondSonghuaRiverhavenotcompletelybeeneliminateduntilnow.
简介:Basedonthedataofearthquakecentroidmomenttensor(CMT)solution,P-wavefirstmotionfocalmechanismsolutionanddeepholebreakouts,apresent-daytectonicstressmapforeasternAsiaregioniscompiled.Theorigi-nalstressdataaresmoothedforevery200km′200kmareabytakingtheaverageofallstressindicatorswithineachsub-region.Thestressmapshowsthespatialdistributionoftheorientationofprincipalstressaxesandthestressregimes.AnearthquakefocalmechanismmapfortheeasternAsiaisalsogiven.Themapsoforientationofprincipalstressaxesshowthat,apartfromthestronginfluenceofthecollisionbetweentheIndianOceanplateandEurasianplate,thepresent-daytectonicstressineasternAsiaissignificantlyaffectedbytheback-arcextensionofthesubductionzones.ThejointeffectofthecontinentalcollisionattheHimalayaarcandback-arcextensionintheBurmaarcregionmayberesponsiblefortheremarkablerotationoftheprincipalstressorientationsinsoutheasternpartoftheTibetplateau.ThejointactionofthecollisionbetweenthePhilippineSeaplateandEurasianplateatTaiwanIslandandtheback-arcextensionoftheRyukyuarcaffectthestressfieldineasternpartofChina.Therearenostrongearthquakesinthepresentdayinthevastback-arcregionoftheJavatrenchsubductionzone.Theback-arcextensiontheremaycreateaconditionfavorabletothesouthwardflowofthelithospherematerialinsoutheasternAsia.IntheinnerpartoftheTibetplateauregion,roughlydemarcatedbytheKunlunmountain,thenorthernandnortheasternpartisabroadintracontinentalcompressivezone,whilethesouthernandsouthwesternpartisgenerallyinanormal-faultingstressstate.
简介:Basedonotherpreviousresearches,werecalculatethemicro-displacementalongtheHeizifaultwithrecentdeformationdataoftheHeizireservoir.Theresultshowsthatactivitycharacteris-ticsofHeizifaulthaschangedgreatlysince1973andhaveexperiencedfourphases.Thethirdphaseischaracteristicsofnormalfault,andotherscharacteristicofreversefaults.Construct-ingthereservoirdamandreservoirsluicehasimportanteffectonpresentactivityofthefault,evenchangedtheactivitycharacteristicsoffaultsinsomephases.Seismicityhassomeeffectondeformationdataandfaultactivity.
简介:Apreliminaryresearchestablishingthepresent-timeintraplateblocksmovementmodelontheChinesemainlandbasedonGPSdataSHUO-YUZHOU1)(周...
简介:Themegamorphostructuresofcentraltype(mega-MCT)andtransrcgionalfaultzoncs-lincaments(TL)arethemainstructuresoftheeontincntalmargin.Thesestructuresareecryaneient(Precambrian)andrepeatedtcetonic-magmaticactivitywascharactcristicfortheminPhancrozoic.Thefirstofthemis2’54’0thousandkmindiameterandformtwo"r
简介:CombiningthedenseGPSandgravityobservationdatainSichuan-Yunnanarea,wheretherearetherelativelycompleteactivetectoniczonesandseismicdata,thispaperappliesthegeodesyandgeophysicalinversiontechniqueandtheadvancednumericalsimulationtothesynthesisstudyofgeodesyinversiontofindthedynamicprocessoftectonicmovementanddeformationintheareaandfinallytoinvestigatethekinematicscharacteristicofthegeologicalstructureofdifferentlayeranddifferentscale.Thispaperdiscussesthekinematics,dynamicsmodelaboutthecrustalmovementofactiveblocksinSichuan-Yunnanareaanditsadjacentareas.
简介:AdenseseismicnetworkwasinstalledinthecapitalregionofChinainrecentyears,whichmakesitpossibletoresolvethefocalmechanismsofsmallearthquakes.Wegatheredlargeearthquakefocalmechanismsfromthelastfiftyyearsandmoderateorsmallearthquakefocalmechanismsfrombetween2002and2004,andcalculatedthepresenttectonicstressfieldofthecapitalregionbythegridsearchmethod,whichweighsdifferentsizedearthquakesandcanimprovetheaccuracyofthestressfieldinversion.Theanalysisofinversionresultsofdifferentsub-regionsshowsthattheazinuthofthemaximumprincipalcompressivestressaxisisNE43°-86°intheBeijing-Zhangjiakou-Datongarea,NE38°-86°intheTangshanarea,andNE79°-81°intheXingtaiarea.Inversionresultsofthispaperaresimilartopreviousresults,whichprovesthecorrectnessoftheapproach.Asrevealedbytheresults,thestressfieldofthecapitalregionischaracterizedbyoverallconsistencyandsub-regionaldifferences.Thisstudyprovidesreferenceforearthquakemechanismexplanationandgeodynamicsresearch.
简介:铁存款(BIF)的变形沉积类型是在世界,和这的簇打的超级大的铁矿石上的铁存款的最重要的类型在巴西包括QuadrilateroFerrifero区域和Carajas,在澳大利亚的Hamersley,在俄国的Kursk,在中国的印度和Anshan-Benxi的中央省。铁存款的Subordinated类型是magmatic,暴烈主人、沉积的。这份报纸简短在世界上介绍主要的超级大的铁矿石簇的地质的特征。在中国的铁矿石的证明储备是相对丰富的,但是他们主要是低档矿石。而且,铁矿石的体谅的部分是困难的为他们的困难的矿石调味品,深埋葬或另外的原因利用。铁矿石存款相对在11个metallogenic省(带)被集中,例如Anshan-Benxi,东方Hebei,Xichang中央的云南省和长江的中间降低的活动范围。主要minerogenetic时代广泛地变化从对太古代第四级,并且主要是对中间晚太古代原生地,Variscan,和Yanshanian时期。主要在中国的铁存款的7种基因类型被变形沉积类型(BIF),magmatic类型,暴烈主人的类型,skarn类型,热水的类型,沉积类型和捱过的沥滤的类型。充满铁的矿石在skarn和海洋的暴烈主人的铁存款主要发生,局部地在变形沉积类型(BIF)同样热水的改革产品。矿藏和minerogenic模型的minerogenetic系列的理论在调查适用并且铁矿石沉积物勘探。空中地磁学的异例和地磁气的异例的深分析的联合,与严肃,异例是到寻求大、深埋葬的铁沉积物的一个有效方法。中国有铁矿石的一个相对大的寻找矿石的潜力,为特别变形沉积,skarn,和海洋的暴烈主人的铁沉积物。为铁和钢工业的更低的保证度,中国应该给一项做贸易并且打开外国采矿市场。
简介:在Wenchuan地震以后的Yingxiu-Beichuan差错的今日的压力状态被重新估计使用在原处测量了在Wenchuan地震以后获得的压力数据。结果表明主要压力对深度的坡度系数沿着Yingxiu-Beichuan差错从南方减少到北方,表明压力铺平到北方的来自南方的减少。在在地震期间产生的今日的压力层次和表面破裂之间的一致性显示在在Wenchuan地震前的Yingxiu-Beichuan差错下面的积累的构造压力被减轻处于良好的竟技状态表面破裂。这导致了在Yingxiu-Beichuan差错,但是相对的南部的节仍然保持高的压力在北节低。反常高毛孔压力条件和一个极其低的摩擦系数在沿着这个差错在Wenchuan地震以后观察的压力地调整和地震事件的解释起重要作用,根据用合并从0.4~1.0的摩擦系数的库仑摩擦失败的理论的评价结果。为了精确地由分析估计Yingxiu-Beichuan差错的地震学上的危险,用库仑摩擦失败的理论指责不稳定性,许多注意应该在今日的压力状态下面集中于毛孔压力条件和摩擦系数的进化状态。