学科分类
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53 个结果
  • 简介:这篇论文为Xinjiang论述geomorphologic区域化的一个方法,与Srtm-DEM(分辨率90m)和为1990的TM图象(分辨率30m)的使用。在geomorphologic类型的解释和分类以后,现在的研究集中

  • 标签: 地理学 地形学 理论 方法 区域性
  • 简介:把Niya节的地质的记录基于多索引的合成研究,它具有在Tarim盆的南部的边缘的高分辨率,和在南部的Xinjiang的另外的地质的记录,这篇论文重建了自从大约4.00kaBP,paleoclimatic的历史在这个区域变化。在最后4.00ka期间,南部的Xinjiang的区域经历了相对寒冷湿、相对的温暖干燥的时期的引申。三个显著寒冷湿的时期(4.00-3.45kaBP,2.50-1.90kaBP,ca。1.40?1.00kaBP)并且三个温暖干燥的时期(3.45-2.50kaBP,1.90-1.40kaBP,1.00kaBP礼品)被识别。人的活动在南部的Xinjiang与古气候的进化有一种亲密关系,这被显示出。

  • 标签: SOUTHERN XINJIANG HISTORICAL CLIMATE CHANGES
  • 简介:ThepaperstudiedthedistributionlawofXinjiang’sheavyrainintime-area-depthbytheoreticalexpressiondeducedfromtheentropymaximumprincipleandfoundsomeregularitiesofheavyrainfallinXinjiangbasedonanalyzing32-yearobservationaldatafromabout400hydrologicalandmeteorologicalstations.IthaspracticalsignificanceforstudyingXinjiang’sheavyrainfall,designingwaterconservancyandreducingfloodcatastrophecausedbyheavyrain.

  • 标签: maximum ENTROPY principle heavy RAIN time-area-depth
  • 简介:Inthispaper,wefirstlyanalyzethe"3,400traveltimetable"usedforalongtimeinXinjiangSeismologicalNetworktoobtainthevelocitystructuremodelsinaccordwiththetablebyfitting.ThenwefitthevelocityofallseismicphasesrecordedinXinjiangregioninJanuary2009~December2013.Simulationanalysisisdoneonthereliabilityandstabilityofthevelocities,andaconceptisproposedforbuildingsubareacrustalvelocitymodelsaccordingtopartitioningofseismicclusterregions.ThecrustalvelocitymodelsuitablefortheYutianareaisfittedwiththedataofallphasesofseismiceventswithinaradiusof1°aroundthe2014YutianM_S7.3earthquakesinceJanuary2009,andthemodelisappliedtotherelocationoftheYutianM_S7.3earthquakeanddeterminationoffocaldepthsoftheearthquakesequence.

  • 标签: 地壳速度模型 新疆地区 地震台网 内区 结构模型 仿真分析
  • 简介:ThispaperbrieflyintroducestheSeismotectonicMapofXinjianganditsneighborhoodinthescaleof1∶2500000.Themapisamended,supplementedandexpandedbasedofthenewlycompiledSeismotectonicMapofXinjianginscale1∶1000000.ThebasemapofthisseismotectonicmapisthegeologicmapofwesternChinaanditsneighborhoodcompiledbyLiTingdong.Theabundantnewmaterialsfromrelatedresearch,referentialliteraturesandtheanalysesonremotesensingdatawereusedinthecompilingwork.Adatabaseandrelevantdocumentsarebuiltfornearly300activefaultsand150activefolds.Thebasicinformationofthemajoractivefaults,especiallythoseneartheborderareasinthismapareintroducedinthispaper.

  • 标签: 构造图 地震 新疆 邻域 中国西部 编制工作
  • 简介:在家和国外的地质的遗产保护和它的发展从单个保护在方面反映进步到在保护和利用之间的协作。联合国教科文组织建立的geopark仔细把地质的遗产的保护与本地经济的持续开发的提升相结合,它成为了最好的方法保护地质的遗产。在Xinjiang的地质的遗产,中国,被他们的大数量,富有的变化和高等级描绘。在Xinjiang的复杂地质似地球形状的环境贡献各种各样的地质的遗产类型和他们的空间分发的创造,并且同时在控制下面做他们。在Xinjiang的地质的遗产的主要类型是地质似地球形状的风景和水风景。空间分发能被划分成五个地质的遗产区域:Altay,Junggar,Tianshan,Tarim和Kunlun-Altun,Tianshan和Kunlun-Altun在之中是很重要的。在Xinjiang基于地质的遗产的第一系统的调查,在保护和利用之间的不够的协作是为在地质的遗产保护的向后的状况的主要原因,这被证实。解决这个问题,这份报纸建议决定保护类型的6主要保护步从,保护形式,保护模式,保护等级,保护序列到决定保护地区,向前带这个想法最佳选择它与地质的遗产保护区域和另外的保护区域以及5个相应模式集成geoparks,并且在Xinjia为209重要地质的遗产做一张保护和利用储备表

  • 标签: 地质遗迹 新疆 保护 中国
  • 简介:BasedontheseismicobservationreportdataprovidedbytheXinjiangDigitalSeismicNetworkfrom2009to2014,wecalculatethewavevelocityratioanditsbackgroundvalueformediumandsmallearthquakesbyusingthemulti-stationmethodinTianshan,Xinjiang.Thispaperanalyzesthevariationofthewavevelocityratiodisturbancevaluetohighlighttheabnormal,andalsoback-traces7moderateearthquakesattheresearcharea.Theresultsshowthat:(1)thebackgroundvalueofthewavevelocityratioisalmost1.70,thewavevelocityratioobviouslydecreasesinthemiddle-easternpartofTianshanandtheregionnearthePuchangfault;(2)thewavevelocityratiodisturbancevalueismostlylowintheepicenterbeforefourearthquakesofM≥5.0from2011to2013inthestudyarea;(3)before7moderatestrongearthquakes,theearthquakeeventswithlowvalueofthewavevelocityratioaccountforover60%ofcorrespondingtotaleventsneartheepicenters,andthelowvalueofthewavevelocityratioisrelativelyobviousbeforemoderateearthquakes.

  • 标签: 波速比异常 天山地区 新疆 地震观测报告 数字地震台网 速度比
  • 简介:TheHongshijinggolddeposit,whichoccursintheMiddleandLateCarboniferousvolcanicandpyroclasticrocks,isofthebrittle-ductileshearzonetypecontrolledbyariftbelt.TheHongshijinggolddepositisonecontrolledbyabrittleshearzonelocatedintheLatePaleo-zoicriftzone.Thealtered-rocktypeandquartztypeorebodiesarecontainedinthegold-bearingformation,whichconsistsofbasaltandtuffaceoussandstone.Themajormineralizingstageisat267-261Maandreiterationmineralizingstageat220-209Ma.Theoremineralsincludepy-rite,magnetite,copper,bornite,ferrohydrite,nativegold,andtheganguemineralsincludequartz,sercite,calcite,Fe-dolomite,leucoxene,anorthose,biotite,baria,cajuelite,andagustite.Thewallrockalterationassociatedwithgoldmineralizationcomprisessilicification,carbonization,pyritization,sericitizationandchloritization.Thecontentsofgoldare2.4×10-9inthegold-bearingformation,5.7×10-9inthetuffaceoussandstoneand1.4-1.5×109inthebasalt.AuisassociatedwithTe,Se,Ni,Cu.Au=74.331×Te+0.0335×Ni-0.0211×Cu-2.650.Geochemicalinvestigationsrevealedthatthemineralizingmaterialscamefromthebasaltandtuffaceoussandstoneinthegold-bearingformation.Undertheactionofductilebrittleshearstructure,thegold-bearingformationwasmetamorphosedandaltered,andtheore-formingmaterialsactivated,migratedandmineralized.Themineralizingfluidshowsthreemineralizingstages,withthecharacteristicsofmiddletolowtemperature(381-115℃)andmiddletolowmassfractionsofNaCl(2.18%-16.77%).ThefluidisoftheCa2+-Mg2+-Na+-Cl-typeandH2O-NaClsystem.Accordingtothedatafromhydrogenandoxygenisotopiccomposition(δD=-114.6‰--68.8‰,δ18OH2O=-2.47‰-5.91‰),theconclusioncanbedrawnthatthemineralizingfluidoftheHongshijinggolddepositwasakindofmixedhydrothermalsolutioncomposedmainlyofmeteoricwater,magmaticwaterandformationwaterinbas

  • 标签: 地质学 地球化学 起源 金矿床 成因 新疆
  • 简介:Thesystemofmineraldepositstatisticalpredictionmethods,basedonthesimilarity-analogytheory,searchinganomalytheoryandthetheoryofore-controllingbyquantitativeassemblageofmetallotects,canhesummarizedintothefollowingaspects:(1)concludingmainore-controllingconditionsandore-huntingindicatorsfromtypicaldeposits;(2)establishinggeologicalconceptmodelofdeposits;(3)selectinggeologicalvariableanddividingstudyunitsandgrantingspecificvalueforeachvariable;(4)bytheuseofgeologicalandmathematicalgeologymethod,buildingpredicationmodel,delineatingprospectiveareaforexplorationandestimatingthetotalresources;(5)evaluatingtheprospectingwork.ItisgoodpracticetousethissystemformetallogenicprognosisandregionalprospectingofgolddepositinEastJunggar,Xinjiangandhasachievedgreatsuccess.Asaresult,wediscoveredtheKubusugoldmineralizedbelt,delineatedprospectivearea,estimatedtotalresourcesofgoldinthebelta

  • 标签: gold DEPOSIT METALLOGENIC PROGNOSIS mathematical GEOLOGY
  • 简介:3-DS-waveQstructureinJiashiearthquakeregionisinvertedbasedontheattenuationofseismicwavesrecordedfromearthquakesinthisregionin1998bytheResearchCenterofExplorationGeophysics(RCEG),CSB,andaroughconfigurationofdeepcrustalfaultsintheearthquakeregionispresented.First,amplitudespectraofS-wavesareextractedfrom450carefully-chosenearthquakerecords,calledobservedamplitudespectra.Then,afterinstru-mentalandsiteeffectcorrection,theoreticalamplitudespectraaremadetofitobservedamplitudespectrawithnonlineardampedleast-squaresmethodtogettheobservedtraveltimeoverQ,providedthatearthquakesourcesconformtoBrune¢sdiskdislocationmodel.Finally,by3-Draytracingmethod,theoreticaltraveltimeoverQismadetofitobservedtraveltimeoverQwithnonlineardampedleast-squaresmethod.Inthecourseoffitting,thevelocitymodel,whichisobtainedby3-Dtraveltimetomography,remainsunchanged,whileonlyQmodelismodified.Whenfittingcametothegivenaccuracy,theultimateQmodelisobtained.TheresultshowsthatanNE-trendinglowQzoneexistsatthedepthsof10~18km,andanNW-trendinglowQzoneexistsatthedepthsof12~18km.TheseroughlycoincidewiththeNE-trendingandtheNW-trendinglowvelocityzonesrevealedbyotherscientists.ThedifferenceisthatthelowQzoneshaveawiderrangethanthelowvelocityzones.

  • 标签:
  • 简介:这个工作的主要目的是由在Karatungk附近获得浅速度结构理解矿物质的分发()区域。数据被一个更稠密的数组在与4.5Hz垂直地震检波器部署一张便携测震表在2009获得。所有P波浪到达时间与Akaike信息标准自动地被拣,然后由短接收装置的几何学交互地检查了manmachine。为本地活跃来源的tomographic倒置的数据库包含4从96射击和三石场强风的241P波浪到达时间读物。棋盘测试瞄准了检查获得的速度模型的可靠性被介绍。产生Vp分发片在这个区域下面显示出复杂3-D结构并且提供三明确的矿藏的更好的理解。在表面附近,我们观察一系列地区与稍微高速度它可能反映潜在的沉积物。基于我们试图限定他们的分布的金属性的矿石的特征并且拉长了方向。

  • 标签: 矿物分布 西北部 新疆 层析 中国 浅层速度结构
  • 简介:InNorthXinjiangthereisanalkaligranitebeltextendingintheNW-SEdirectionalongthesouthernbandoftheUlungurRiverandrunningparalleltothesuturezone,i.e.,Aermantai-ZhahebaOphioliticMelangeZone,betweentheJunggarPlateandtheAltayOrogenicBelt.Whole-rockRb-SrisochronagesoftheUlunguralkaligranitesarewithintherangeof292-309Ma,showingthattheyweregeneticallyconnectedwiththelatestepisodeofHercynianmagmatismsubsequenttothesyncollisionS-typeandpost-collisionupliftingI-typegranitoidsintheAltayregion.Thealkaligranitesareminer-alogicallycharacterizedbytheoccurrenceofaegirineandarfvedsoniteandchemicallybyhighsiliconandalkali,lowcalciumandmagnesiumandabundanthigh-fieldelements,beingtypicalA-typegranites.ThealkaligraniteswereformedinthefinalstageoftheHercyniancalc-alkalinemagmaticcycleinaveryshortperiodoftime.Theyareinlinewiththepost-orogenicA-type(PA-type)granites,implyingthatthetectonicregimewaschangedfromcompressiontoextension.

  • 标签: 碱性花岗岩 新疆 地球化学 A型花岗岩 I型花岗岩 S型花岗岩
  • 简介:TheLamasucopperpolymetallicmineralizedregionliesinthesouthofWenquanCounty,XinjiangandintheNorthwestlakesideoftheSailimuLake.Seenfromthegeotectonicposition,itbelongstoNorthTianshangeodomesystem,Tianshandiwaregion,CentralAsiancrustobody.Copperandzincpolymetallicorebodieshadbeenformedintheskarnofthecontact,betweenthemetamophiccarbonaterocksoftheKuximqiekGroup,JixianSystemandearlymid-Variseanacidicrockbodies.Theformationoftheoredepositwastheresultofthesuccessiveactivitiesofthecrustandmantleandthetectonicandmagmaticactivities.

  • 标签:
  • 简介:洪水,干旱,下得很大的冰雹,和在从1949~2012的Xinjiang的低温度事件的数据与散开方法被分析在Xinjiang估计灾难的最普通的类型的风险。学习区域的气象学的灾难的频率和紧张显示出与全球温暖联系的一个增加的趋势,这被证明。在灾难的四种类型之中,超过干旱的概率最大,接着由下得很大的冰雹,低温度和洪水列在后面。而且,小浪方法分析表明自从2000,更大的摆动发生了,它可以与极端气候的变化的出现被联系。频率的空间分发表明Tianshan山的北斜坡是一个多重灾区,Tianshan的南部的斜坡是更多的洪水和下得很大的冰雹发生的区域,并且Turpan-Hami盆的西方是区域风是流行的。在影响灾难的区域和相应气象学、社会经济的索引之间的关系也被分析。它显示除了谷物面积,在影响的区域和最气象学、社会经济的指示物之间有重要积极关联。

  • 标签: 灾害评估 信息扩散理论 中国西北地区 气象 新疆 社会经济指标
  • 简介:Therearetwogradesofnetwork-typetextureinmetamorphicperidotitefromtheKudaophiolite,Xinjiang,China,Thefirstgraduationconsistsofcoarse-grainedolivinewithplasticdeformationfabrics,orthopyroxeneandminorclinopyroxeneandCr-spinel.Thesecondgraduationconsistsofsmallmineralsfillingamongthemineralgrainsofthefirstgraduation.Fourkindsofassemblagescontainingtremolitehavebeendiscoveredinthesecondgraduation,whichwereformedduringmantlepartialmeltingandmantlemetasomatismofahighlydepletedperidotite.

  • 标签: 纹理 矿物聚集 新疆 透闪石 蛇绿岩 变质橄榄岩
  • 简介:Sm-NdandRb-Srwhole-rockisochrondatingofthesamplesofcumulatedgabbro,diabaseandandesiticporphyritefromtheArmantaiophiolite,Xinjiang,yieldedtheagesof561±41(Ma(εNd(t)=6.1)and392±17Ma(87Sr/86Sr)i=0.7041],whichstandfortheagesofcreationandlatermetamorphismoftheophiolites,respectively,ThecreationenvironmentoftheArmantaiophiolitesseemstoaback-arcbasincausedbythesouthwardsubductionofthetheArmantaiophiloitesseemstoaback-arcbasincausedbythesouthwardsubductionofthepalaeo-AsiaOcean.

  • 标签: 钕同位素 锶同位素 新疆 蛇绿岩 成岩时代 等时代年龄
  • 简介:TheseismicwaveformoftheYutianMS7.3earthquake,XinjiangonFebruary12,2014wasrecordedclearlyandcompletelybytheDigitalSeismicNetworksofXinjiang,Qinghai,Tibet,andXinjiangHotanarray,sothemethodofjointlocationbyregionalseismicnetworkandseismicarraycanbeusedtoaccuratelydeterminetheearthquakesourcelocation.Thefollowingtechnologieswereusedintheprocessoflocation:(1)WeselectedseismicstationsequallylocatedaroundtheepicenteroftheMS7.3earthquakewithanaverageintervalofabout15degreesintheinitiallocation.(2)TherecordingwaveformsofYutianseismicstationwererotatedtotheradialandtangentialdirectionstopreciselyobtainthearrivaltimeofS-wavestodeterminetheepicentraldistance.(3)Thevelocitymodelwasusedinthedeterminationoflocationoftheepicenter,basedonthehistoricalrecordsofearthquakesintheareawithinaradiusof1.0°fromthesourceasthecenter,andthevelocitymodelisobtainedafterre-fittingandcalibration.(4)BasedonthewaveformrecordsoftheHotanseismicarray,themethodofwaveformbeamingwasusedtodeterminetheazimuthsandperformthecorrectionoftheepicenterlocationwiththeseazimuths.(5)Thedeterministicmethodwasusedtomeasurethesourcedepth.Finally,itisconcludedthattheYutianMS7.3mainshockhypocenterlocationis36.197°N,82.467°E,focaldepth12kmandoriginaltime17:19:48.2p.m.February12,2014.

  • 标签: 地震波形 新疆和田 精确位置 数字地震台网 区域地震台网 震源位置
  • 简介:AnM_S7.3earthquakeoccurredonFebruary12,2014inYutianCounty,XinjiangUygurAutonomousRegion,whichwasfollowedbyaseriesofaftershocks.ThispapercalculatesthedepthoftheM_S7.3earthquakesequencebyusingthedeterministicapproachwiththeseismicphasedatafromthecatalogdatabaseoftheChinaEarthquakeNetworksCenter,combinedwithoriginalseismicwaverecordsfromtheDigitalSeismicNetworkCenteroftheEarthquakeAdministrationofXinjiangUygurAutonomousRegion.

  • 标签: 新疆维吾尔自治区 地震序列 震源深度 新疆维吾尔族自治区 数字地震台网 确定性方法