简介：TectonicallytheDabieorogenicbeltconsistsmainlyoftheDabieshanYanshanianupliftedzoneandtheBeihuaiyangVariscan-Indosinianfoldingzone.InthenorthboundaryadjoiningtheNorthChinaBlock,thereareanEarlyPalaeozoicophioliticmixtitebeltandtheHefeiMesozoic-Cenozoicfaultedbasinwhichoverlapsonthesuturebelt.InthesouthofDabieorogen,thereisasecondarytectonicunitcalledForelandthrust-faultedstructuralzonewhichwasmainlyformedbytheintracontinentalsubductionsduringMesozoicera.ThestudyshowsthattheDabieBlockisapartofmid-lateProterozoicpalaeo-islandarcatthenorthmarginofYangtzeBlock.DuringCaledonianperiod,asasubmergedupliftatthenorthencontinentalmarginofYangtzeBlock,theDabieBlockcollidedwiththeearlyPalaeozoicpalaeo-islandarcatthesouthmarginofNorthChinaBlock,resultingintheconvergenceoftheNorthandSouthChinaBlocksandthedisappearanceofoceaniccrust.Sincethen,large-scaleintracontinentalsubductionswerefollowed.DabieOrogenicBeltistheproductofoverlappingofYangtzeBlock,DabieBlockandNorthChinaBlockunderthemechanismofintracontinentalsubduction.IndosinianperiodistheperiodofchiefdeformationandhighpressuredynamicmetamorphismforDabieBlock,andYanshanperiodisthemainorogenicperiodinwhichtheremeltingofcrustcausedbybasementshearingresultedinlargescalethermometamorphism.ThepresenttectonicframeworkoftheorogenwasfinallyformedbytherapidupliftingoftheDabieshanmountainsandglidingsouthwards,whichresultinthedevelopingofthrustbeltonsouthsideandtheextensionaltectonicmovementonnorthside.

简介：ElNinoaswellastheSouthernOscillationisoneofthestrongestsignalsknownsofaroverclimaticnoiseininterannualvariationsoftheatmosphereandoceans.Agreatnumberofstudieshaveshowndefinitelyrelationshipsbe-tweentheeventsandclimaticanomaliesinChina.Inthisreview,observationalresultsobtainedintherecentseveralyearsarefirstsummarized.ThenthepossiblephysicalmechanismsontheinfluenceofElNinoarepresentedand,finally,theassociatedproblemsarediscussed.

简介：

简介：In2004,China’sdigitalseismicobservationnetworkprojectbegantodeploy40setsYRY-4four-componentboreholestrainmetersinordertomonitorearthquakepreparationprocess.Thepaperdescribesobservedsolidtidalstraindiscretenessandtidalfactoranisotropy,analyzesthereliabilityofobservationaldataanddiscussesthecauseforthisphenomenon.Aftergettingridofinterferences,thenetwork,intwoyearspractice,hasobservedseveralpre-seismicstrainanomaliesatstationsclosetoepicentersespeciallyintheWenchuanMS8.0megaquake.Itshowsthatthisboreholestrainmeternetworkiscapableofmonitoringseismogenicprocess.

简介：在这研究，越过从1956～2004的中国的最大的风速度(WSmax)变化基于观察车站数据被分析，并且为20462065和20802099的WSmax的变化用三个全球气候模型被投射(GFDL_CM2_0，CCCMA_CGCM3，并且MRI_CGCM2)那参予了IPCC第四份评价报告(AR4)。观察到年度、季节的WSmax和强风天的频率显示出明显的衰退趋势。年度WSmax每十年由约1.46ms1减少了，并且强风天的数字从1956～2004每十年到3.0天减少了。年度、季节的WSmax减少的振幅比年度、季节的平均的风速度(WSavg)的那些大。变弱东方亚洲冬季和夏天季风在整个中国上是为WSmax和WSavg的不同减少的原因。在东南的WSmax的减少中国的沿海的区域与在中国和减少的数字的冷波浪的减少的紧张有关(并且减少的紧张)land-falling，台风在西北太平洋发源。全球气候模型GFDL_CM2_0，MRI_CGCM2，和EBGCM(上面的整体提及三个全球气候模型)一致地建议年度、季节的WSmax价值将相对19812000在20462065和20802099期间减少。模型也建议在为整个中国的WSmax的减少在20462065和20802099期间与冷波浪的减少的紧张和冬季季风的减少的紧张有关，并且在在东南的WSmax的减少中国的沿海的区域在一样的时期期间相应于在在夏天的西北太平洋上的热带气旋的减少的数字。

简介：

简介：

简介：紫外(紫外)放射穿上重要效果生态系统，环境，和人的健康，以及大气的过程和气候变化。二紫外放射数据集在这份报纸被描述。一个人时时包含从2005～2015在40个中国生态系统研究网络车站测量的紫外放射的观察。CUV3宽带辐射计被用来观察紫外放射，与5%的精确性，它满足世界气象学组织测量标准。极值方法被用来控制测量数据集的质量。另外的数据集包含用与一个混合模型相结合的一个所有天空评价模型是计算的每天累积的紫外放射估计。从1961～2014的重建的每天紫外的放射数据跨度。吝啬的绝对偏爱错误和root-mean-square错误至多比30%小吝啬的偏爱错误价值的车站，和大多数是否定的，它显示紫外放射紧张的低估。这些数据集能在紫外放射改进我们空间、时间的变化的基本知识。另外，这些数据集能在潜力的研究被使用臭氧形成和大气的氧化，以及生态的进程的模拟。

简介：ThroughthestudyofthegeologicalconditionsofpotashdepositsinChinafromrecentyears,anewunderstandingofpotashtheorieshasarisenthatappropriateChinesegeologicalfeatures.Importantprogressandsubstantialbreakthroughshavebeengainedinthedirectionandmanagementofpotashprospecting:(1)Importantbreakthroughsincontinentalpotassiumprospecting:The"QuaternarygraveltypedeeppotassiumrichbrinemetallogenicmodelinwesternQaidam"ensuresQuaternarydeeppotassiumrichbrineprospectingwillgrownewKClresourcesby350Mt,providingaresourceguaranteeformeetingtheChinesedemandforsylvite.(2)TheMarinefaciespotashprospectingshowsgoodprospects:thedeterminationofthenewtypeofTriassicpolyhalitepotashoredepositsinSichuanprovideanimportantscientificbasisfortheestablishmentofexplorationplanningandtheselectionofexplorationtargetareasforpolyhalitemineralsintheSichuanBasin;The"two-storeypotashdepositsmodel"insouthwesternYunnanhasbeenconfirmed,whichindicatesprospectsfortheexplorationofpotashinthedeeperMarinefaciesinsouthwesternYunnanarelikelytobesuccessful.ThediscoveryofahighconcentrationofrichbromitesaltandpotashsaltinthePaleogeneoftheKuqadepressionandthesouthwesternTarimregionprovidesstrongsupportforthelikelihoodlarge-scalepotashdepositsexistintheseregions.

简介：ThepresenceofthereversalsofthegeomagneticfieldwithintheBrunhesisindicatedbypaleomagneticstuidesonCenozoicvolcanicrocksintheLeizhouPeninsula,loessstrataandQuaternarymarinesedimentsinthePearlRiverMouthbasininChina.Theseregionalreversalsoccuredat0.58±0.13Ma,0.45Maand0.47—0.48MarespectivelyaccordingtotheresultsofK-Arisotopicdatingandclimatostratigraphicandbiostratigraphicanalyses.ThereversalsequivalenttotheEmperorEventissuggested.ThereversalsrevealedindifferentregionswithvariouslithologiccharactersinChinaprovethattheEmperorEventisaglobalreversaleventratherthanageomagneticexcursion,anditsconfirmationwillpermitaprecisedefinitionoftheMiddle/LatePleistoceneboundary.

简介：北方中国平原(NCP)是地下水弄空的全球热点之一，地下水是为在这个区域的农业、工业、喝的水的水的几乎唯一的来源。在深地下水的long-terms在利用上以后，在那里出现了几个深地下水消沉锥例如Cangzhou锥，Dezhou锥，Hengshui锥，天津锥，等等，Cangzhou锥在是为它的特殊地理的典型的锥之一和hydrogeology条件。在这研究，作者打算在Cangzhou区域分析深地下水消沉锥的进化特征和影响因素，特别没有。III含水土层消沉锥，它是在这个区域的主要利用地区。地下水消沉锥的进化的分析没有。在Cangzhou区域的III含水土层组证明也就是，这个过程能被划分成四个阶段开发，稳定的发展，快速的扩大，和渐渐的恢复。在不同阶段的消沉锥的形状和进化特征被分析地下水桌子的30，40，和50个轮廓的进化描述，例如，50m的水桌子轮廓的关上的区域从95km被扩大了在1985～6528.5km的2在2005的2。在不同阶段影响进化特征的主导的因素被建议。结果证明有更少的降水，地质的专辑和hydrogeological条件的相对长的干燥时期，和为工业、农业的开发的严厉地增加的水消费是引起深地下水消沉锥的形成的主要因素。同时，对地下水利用的环境回答被介绍，并且合理答案被建议避免水危机。

简介：Theimpactofstrong(weak)intraseasonaloscillation(ISO)overSouthChinaSea(SCS)andSouthAsia(SA)insummerontheSCSandSAsummermonsoonandthesummerrainfallinEasternChinaarestudiedbyusingtheNCEP-NCARanalysisdataandtherainfalldataof160stationsinChinafrom1961to2010.Itisfoundthattheimpactsaresignificantlydifferentindifferentmonthsofsummer.ThestudyshowsthatinJuneandJulycyclonic(anticyclonic)atmosphericcirculationoverSCSandSAcorrespondstostrong(weak)ISOoverSCS.InAugust,however,strong(weak)ISOoverSCSstillcorrespondstocyclonic(anticyclonic)atmosphericcirculationoverSA.InJuneandAugustcyclonic(anticyclonic)atmosphericcirculationoverSouthAsiacorrespondstostrong(weak)ISOoverSAwhileastrong(weak)ISOcorrespondstoanticyclonic(cyclonic)atmosphericcirculationoverSAinJuly.Besides,inJunethestrong(weak)ISOoverSAcorrespondstocyclonic(anticyclonic)atmosphericcirculationoverSCS,whileinJulyandAugusttheatmosphericcirculationisinthesamephaseregardlessofwhethertheISOoverSAisstrongorweak.Theimpactsofthestrong(weak)ISOoverSCSontherainfallofeasternChinaaresimilarinJuneandJuly,whichfavorsless(more)rainfallinYangtze-HuaiheRiversbasinbutsufficient(deficient)rainfallinthesouthofYangtzeRiver.However,theimpactsarenotsoapparentinAugust.InSouthAsia,thestrong(weak)ISOinJulyresultsinless(more)rainfallinthesouthofYangtzeRiverbutsufficient(deficient)rainfallinYangtze-HuaiheRiversbasin.TheinfluenceontherainfallineasternChinainJuneandAugustisnotassignificantasinJuly.

简介：Analysisofmagneticpropertiesofmarinesurfacesedimentshasbeengraduallyprovedtobeoneoftheeffectivemeansforresearchingthesourceofmarinesediments.Inthispaper,samplesfrom39sitesinLiaodongBaywerecollectedtoanalyzethemagneticcharacteristicsofthesurfacesediments.MagneticstudyindicatedthatthesurfacesedimentsoftheLiaodongBayarecharacterizedbymagnetite.InthemiddleandeasternpartandthesouthwestcorneroftheBay,themainmagneticgrainswerecoarsemulti-domainandpseudo-single-domainparticles,whileinotherareassingle-domainandpseudo-single-domainparticlesconstitutethemajority.Basedongrainsizeandenvironmentalmagnetismdata,thecontentofmagneticmineralshasapositivecorrelationwiththehydrodynamicenvironmentwhenthemagneticmineraldomainisfiner.However,thecontentofmagneticmineralsisinacomplexrelationshipwiththehydrodynamicenvironmentinthecoarsemagneticdomainofmagneticmineralsfoundincentralLiaodongBayandplacesoutsidetheFuzhouBay,implyingthatthestronghydrodynamicenvironmentacceleratesthesedimentationofcoarsemagneticminerals.Basedongeographicpatternofmagneticproperties,itcanbeinferredthatthemainprovenanceofthesurfacesedimentsoftheLiaodongBayisthesurroundingrivers,andthecomparativeanalysisindicatesthatYellowRiversubstancesmaybealsoexistinthebay.

简介：TheCandHisotopiccompositionsofthemethaneinmorethan160gassamplesfrom10basinsinChinaarepresentedinthispaper.Thenaturalgasesareclassifiedasfourtypes:biogenicgas,bio-thermocatalytictransitionalgas,gasassociatedwithcondensateoil,andcoal-typegas.Theisotopiccompositionsofthesegasescloselyrelatedtothedepositionalbasins,thetypesoforganicmatter,thestagesofthermalevolutionandthegeneticcharacteristicsofdifferentgasreservoirs.StudiesoftheCandHisotopiccompositionsofterrigenousnaturalgaseswillprovidevalua-bleinformationontheprospectinganddevelopmentofnaturalgasesofdifferentgenetictypes.

简介：

简介：ＱｕａｎｔｉｔａｔｉｖｅＡｓｓｅｓｓｍｅｎｔａｎｄＺｏｎａｔｉｏｎｏｆＲｅｇｉｏｎａｌＣｒｕｓｔａｌＳｔａｂｉｌｉｔｙｉｎＣｈｉｎａＳｕｎＹｅ；ＴａｎＣｈｅｎｇｘｕａｎ（ＵｒｂａｎａｎｄＥｎｇｉｎｅｅｒｉｎｇＳｉｔｅＳｔａｂｉｌｉｔｙＲｅｓｅａｒｃｈ...

简介：

简介：ChinaisrichinMiddleandCarboniferousfossilcorals.Thecoralfaunasindifferentregionshavevaryingcharacteristicsandcanbedividedintodistinctassemblages.ThecoralfaunainSouthChinaisdominatedbytheorderCaninidaandcontainsnumerousendemicelements;thatinNorthChinahasalotofMiddleCarboniferouscoralswhicharemonotonousinspecies,withLateCarboniferoussolitarycoralsbeingpredominant.ThecoralfaunainJunggarmainlycontainslargebi-zonedsolitarycaninids,whilethatinsouthernKhinganissimilartothatinSouthChinaduetothepresenceofabundanttri-zonedcompoundcorals.InnorthernTibetthecoralfaunaisalsosimilartothatinSouthChina,butinsouthernTibetitisofacold-watertype.Therefore,theMiddleandLateCarboniferouscoralgeographyofChinacanbedividedintotheTethys,BorealandGondwanaRealms.

简介：ThickenedheavyoilsinChinaaregeneticallycharacteristicofcontinenta.Astotheirphysico-chemicalproperties,theseoilsareveryhighinviscosityandlowinsulphurandtraceelementcon-tents.Inthegroupconstituents,theconcentrationsofnon-hydrocarbonsandasphalteneareveryhighbutthoseofsaturatedhydrocarbonsandaromaticsareverylow.Thegaschromatogramsofalkanesshowthattheseheavyoilshavehighabundancesofiso-alkanesandcyclichydrocarbons.Inallthesteroidsandterpenoids,bicyclicsesquiterpenoids,tricyclicditerpenoids,re-arrangedsteranesandgammaceranearestronglybildegradation-resistent.Theformationofheavyoilreservoirsiscontrolledmainlybylatebasinascendance,biodegradation,flushingbymeteoricwaterandoxidationintheoil-bearingformations.Ac-cordingtotheirformationmechanisms,heavyoilreservoirscanbeclassifiedasfourcategories:weatheringanddenudation,marginaloxidation,secondarymigrationandthickeningofbottomwater.Spacially,heavythickoilreservoirsaredistributedregularly:theyusuallyshowsomeparageneticrelationshipswithnormaloilreservoirs.Heavyoilreservoirsoftenoccurinstructuralhighsorinoverlyingyoungerstrata.Theirburialdepthisabout200m.Horizontally,mostofthemaredistributedonthemarginsofbasinsordepressions.

简介：TheexistingestimatesofthevolumetransportfromthePacificOceantotheSouthChinaSeaaresummarized,showinganannualmeanwestwardtransport,withtheTaiwanStraitoutflowsubtracted,of3.5±2.0Sv(1Sv=106m3s-1).Resultsofaglobaloceancirculationmodelshowanannualmeantransportof3.9SvfromthePacifictotheIndianOceanthroughtheSouthChinaSea.TheborealwintertransportislargerandexhibitsaSouthChinaSeabranchofthePacific-to-IndianOceanthroughflow,whichoriginatesfromthewesternPhilippineSeatowardtheIndonesianSeasthroughtheSouthChinaSea,aswellasthroughtheKarimataandMindoroStraits.ThesouthwestwardcurrentnearthecontinentalslopeofthenorthernSouthChinaSeaisshowntobeacombinationofthisbranchandtheinteriorcirculationgyre.Thiswinterbranchcanbeconfirmedbytrajectoriesofsatellite-trackeddrifters,whichclearlyshowaflowfromtheLuz6nStraittotheKarimataStraitinwinter.Insummer,theflowintheKarimataStraitisreversed.NumericalmodelresultsindicatethatthePacificwatercanentertheSouthChinaSeaandexittowardtheSuluSea,butnoobservationalevidenceisavailable.Therolesofthethroughflowbranchinthecirculation,waterpropertiesandair-seaexchangeoftheSouthChinaSea,andinenhancingandregulatingthevolumetransportandreducingtheheattransportoftheIndonesianThroughflow,arediscussed.