简介：ＰｈｙｓｉｃａｌｂａｃｋｇｒｏｕｎｄｏｎｅｓｔｉｍａｔｉｎｇｂｖａｌｕｅＷＥＩＱＩＯＮＧＨＵＡＮＧ（黄玮琼）ＷＥＮＸＩＡＮＧＬＩ（李文香）ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｐｈｙｓｉｃｓ，ＳｔａｔｅＳｅｉｓｍｏｌｏｇｉｃａｌＢｕｒｅａｕ，Ｂｅｉｊｉｎ...

简介：ThedatarecordedduringthesitesurveyintheZhangzhouareainFujianProvincebetweenOctober23,2007andDecember3,2007wasanalyzed.Themainmethodsadoptedforthenoiselevelofthisareaarethenoiserootmeansquare(RMS),noisepowerspectrumdensityandnoisecoherencyfunction.Theresultsindicatethatthenoiselevelsofthesurveysitesarehigherinthe1s-10speriods,whichisthemainfrequencybandofpreliminarymicroseism,andalso,twomainnoisesourceswerefoundin1.5Hzandaround5Hz.Accordingtoarithmetic,thedirectionandfrequencybandofthenoisesourcewereanalyzedandacademicproofswerepresented.Atlast,wefoundthatthenoisesourcein1.5Hzwasmadebythewaterwavearousedbythewindinthereservoirregionandthenoisesourcearound5Hzwasmadebythepowerstationinthenortheastdirection

简介：Theauthorshaveproposedadynamicmodelinthispaperbasedontheages,rockseriesandassociations,Sr-NdisotopicsignaturesoftheMesozoicintracontinentalmagmatismoverlyingtheCathaysianandYangtzeblocks.ThemodeldescribestherelationofintracontinentalcollisionandsubductionintheTethyantectonicregiewithPaleo-Pacificoceanicplatesudbuction-strikeslip-extensioninthePacifictectonicregime.During220-150Ma,thehorizontalcollisionbetweentheNorthChinablockandtheYangtzeblock,aswellastheintracontinentalsubductionofsomedivergentmicrocontinentalterranesinthesouthwesternpartofSouthChinaareascribedtotheinfluenceoftheTethyantectonicregime,givingrisetoavolumeofhigh-Israndlow-εNd(t)S-typegranitesonlyintheCathaysianBlock.During145-90Ma,underthegeodynamicbackgoundofsubduction-strikeslip-extensionofthePaleo-PacificoceanicplateonthebasisofthedeeptectonicprocessintheTethyantectonicregime,high-K,alkalirichcalc-alkalineandshoshoniticvolcano-plutoniccomplexesweregeneratedintheYangtzeblock,andhigh-Kcalc-alkalicandbimodalvolcano-plutoniccomplexesweregeneratedintheCathaysianblock.TheoccurrenceofA-typeperalkalinegranitesinthecoastalareasofSoutheastChinaindicatestheendofMesozoicintracontinentalmagmatism.

简介：ＤＹＮＡＭＩＣＡＬＥＦＦＥＣＴＳＯＦＴＹＰＨＯＯＮＢＡＣＫＧＲＯＵＮＤＦＬＯＷＯＮＴＹＰＨＯＯＮＳＵＢＣＩＲＣＵＬＡＴＩＯＮＡＮＤＴＹＰＨＯＯＮＭＯＴＩＯＮＫａｎｇＤｉ（亢迪）（ＩｎｓｔｉｔｕｔｅｏｆＳｙｎｏｐｔｉｃａｎｄＤｙｎａｍｉｃＭｅｔｅｏｒｏ...

简介：在从贵州省的土样的硒的内容，它盖住17.6x10~的一个区域4km~2被决定了。947件样品的算术平均价值是0.39mg/kg，中等价值是0.30mg/kg，硒的内容在在基岩上开发的土壤从0.06～1.29mg/kg变化，它被基岩自己控制。

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简介：在南部的中国把降水和每月的温度数据基于每天，在南部的中国的冬季极端降水变化被使用Mann-Kendall测试和概括Pareto分发的返回值调查了。结果证明在南部的中国的一场冬季气候大祸在1991附近发生了，并且冬季极端降水的紧张在温暖的气候以后被加强。在温暖的气候前后的异常发行量特征被为大气的研究分析数据的环境预言/公民中心使用美国国家中心进一步分析。在东亚上的热带冬季季风否定地在东南的中国与降水被相关，这被发现。在气候温暖以后，在中间、高的纬度的发行量的meridionality从北方增加空气，它为寒冷的向南方的运动是有利的。另外，在南部的中国上的温度的增加可以导致在大陆和海洋之间的微分加热的减少。因而，在东亚上的热带冬季季风被削弱，它为到东南的中国和潮湿流动的异常集中的形成的温暖、潮湿的空气的运输是有利的，导致在东南的中国上的大降水。作为结果，在在在温暖的气候以后的中间、高的纬度和更低的纬度的异常发行量之间的相互作用在东南的中国上在冬季降水紧张的增加起一个主要作用。

简介：历史的地震活动在北方中国区域是强烈的。然而，自从Ms6.2地震，没有中号的地震在Zhangbei区域在这个区域发生在最后十年在1998。中等、强烈的地震的静止在诺思中国是相当突出的。在这篇论文，我们在1970~使用小地震记录2009学习背景在北方中国区域的地震活动。地震参数的空间分布被介绍，包括b值，最大的大小和M/6的地震的年度出现概率。0。我们有低b值的结果表演区域在太行山块在山西裂缝，位于Tancheng-Lujiang差错地区的Suqian区域和Shijiazhuang区域包括Yuncheng区域。我们seismicity的合成空间模式上的分析显示在北方中国区域的seismicity被深结构的地区性的动态因素主要影响。

简介：Tianluoshan地点的Paleosalinity记录从泥土矿物质的measurations数据被导出，硼，锶，钡，在在Tianluoshan地点的三侧面的领域采样以后。相对的海水平变化根据实验室结果被讨论。记录显示Tianluoshan地点定位了的区域见证以前高看台的水平至少三次相对的海，在期间并且在Hemudu时期以后。基于以前的研究，这篇论文也集中于包括地讨论Hemudu文化的几个环境元素，在环境状况之间的相互关系，人的活动和开发。

简介：虽然许多注意被给了描述波浪的模型，潮和沉积运输在足够的详细处理决定在床上的本地变化在深测术的一个相对详细的代表上铺平，远，更少的注意被给了在大得多的规模考虑这个问题的模型(例如象一条潮汐的扁平、潮汐的隧道那样的geomorphological元素的)。这聚集了或lumped模型趋于不表示这些过程详细，但是相当在兴趣的规模捕获行为。如此的模型用平衡集中的概念开发了的是聚集的规模在潮汐的盆和邻近的海岸(ASMITA)之间的词法相互作用。在这份报纸，我们提供一些新卓见进平衡，和是这条建模途径的关键部件的水平、垂直的交换的概念。在一份同伴报纸，我们总结被承担了扩大原来的模型概念的开发的一个范围，到说明概念的框架的灵活性和力量。然而，日益增多地增加详细在详细基于过程的模型和我们给某考虑到在二之间的边界的更多的方向感动模特儿。聚集模型规模的HighlightsThe概念被探索，ASMITA模型的基础详细被构画出在在快规模的基于过程的模型和在聚集的模型使用的水平交换使用了的分散之间的关系被探索提出合适的平衡关系的基础被解释其他的方法包括移流和分散检验。

简介：水污染在在中国的最严重的环境问题之中，特别地在居住、城市的区域的附近。在几乎所有亚洲国家，河监视是主要基于化学数据的分析。然而，生物数据是为河的长期的生态的地位的决心的值得的增加并且在陡峭的污染和骚乱坡度的情况下是特别地很相配的。为用benthic无脊椎动物的河水质量评价的一个工具为长江的中间的活动范围的选择支流被开发了。地点选择被考虑物理化学的preclassification和hydromorphological条件支持。跟随一个成层的采样图案，34件样品在西方的湖北的副热带的多山的区域在小、大的流被拿()(中国)盖住一个污染坡度，在流特征上由一个广泛的域协议伴随了并且(physico-)化学的水分析。建议评价系统每taxon作为一个平均分数被计算。挑战将进一步认为从进如此的工具的发展的全球变化的另外的影响被讨论。

简介：TheGongheBasin,aCenozoicdown-warpedbasin,islocatedinthenortheasternpartoftheQinghai-Xizang(Tibetan)Plateau,andspreadoverimportantnodesofthetransferofmultipleblocksinthecentralorogenicbeltintheNWWdirection.Itisalsocalled“QinKunFork”and“GongheGap”.Thebasinhasahighheatflowvalueandobviousthermalanomaly.Thegeothermalresourcesaremainlyhotdryrockandundergroundhotwater.Inrecentyears,themechanismofgeothermalformationwithinthebasinhasbeencontroversial.Onthebasisofunderstandingtheknowledgeofpredecessors,thispaperproposesthegeothermalformationmechanismofthe“heatsource–heattransfer–heatreservoirandcaprock–thermalsystem”oftheGongheBasinfromtheperspectiveofageologicalbackgroundthroughdataintegrationintegratedresearch-expert,discussion-graph,compilation-fieldverificationandotherprocesses:(1)Heatsource:geophysicalexplorationandradioisotopecalculationsshowthattheheatsourceofheatinthebasinhasboththecontributionofmantleandtheparticipationoftheearth'scrust,butmainlythecontributionofthedeepmantle.(2)Heattransfer:Thepetrologicalpropertiesofthebasinandtheexposedstructurepositionofthesurfacehotspringsshowthatonetransfermodeisthematerialofthemantlesourceupwellsandinvadesfromthebottom,directlyinjectingheat;theotheristhatthedeepfaultconductsthedeepheatofthebasintothemiddleandlowerpartsoftheearth'scrust,thenthesecondaryfracturetransferstheheattotheshallowpart.(3)Heatreservoirandcaprock:First,theconvectivestrip-shapedheatreservoirexposedbythehotspringsontheperipheralfaultzoneofthebasin;second,theunderlyinghotdryrocklayeredheatreservoirandtheuppernewgenerationheatreservoirandcaprockinthebasinrevealedbydrillingdata.(4)Thermalsystem:Basedonthecharacteristicsofthe“heatsource-heattransfer-heatreservoirandcaprock”,itispreliminarilybelievedtha

简介：Low-frequencychorusemissionshaverecentlyattractedmuchattentionduetothesuggestionthattheymayplayimportantrolesinthedynamicsoftheVanAllenBelts.However,themechanism(s)generatingtheselow-frequencychorusemissionshavenotbeenwellunderstood.Inthisletter,wereportaninterestingcaseinwhichbackgroundplasmadensityloweredthelowercutofffrequencyofchorusemissionsfromabove0.1fce(typicalordinarychorus)to0.02fce(extremelylow-frequencychorus).Thoseextremelylow-frequencychoruswaveswereobservedinaratherdenseplasma,wherethenumberdensityNewasfoundtobeseveraltimeslargerthanhasbeenassociatedwithobservationsofordinarychoruswaves.Forsuprathermalelectronswhosefreeenergyissuppliedbyanisotropictemperatures,lineargrowthrates(calculatedusingin-situplasmaparametersmeasuredbytheVanAllenProbes)showthatwhistlermodeinstabilitycanoccuratfrequenciesbelow0.1fcewhenthebackgroundplasmadensityNeincreases.EspeciallywhenNereaches90cm^-3ormore,thelowestunstablefrequencycanextendto0.02fceorevenless,whichisconsistentwithsatelliteobservations.Therefore,ourresultsdemonstratethatadensebackgroundplasmacouldplayanessentialroleintheexcitationofextremelylowfrequencychoruswavesbycontrollingthewavegrowthrates.

简介：在遥感监视的中国的典型区域基于冰河区域变化记录，吗象从139的空气温度和降水的气象学的数据一样驻扎并且0??????????????????????????吠慭吗？？

简介：<正>GEOTECTONICBACKGROUNDOFPYROPHYLLITEMINERALIZATIONANDORE-BEARINGVOLCANICFORMATIONINSOUTHEASTERNCOASTALAREAS,CHINAWangLing(ChangshaInstituteofGeotectonics,AcademiaSinica,Changsha,410013,Hunan,China)LiuDongshen(GeologicInstitute,NationalConstructionMaterialIndustryBureau,100010,Beijing,China)pyrophyllite,Diwastructure,nonmetallicmetailogeny,ore-bearingforma-tion,theSountheasternCoastalAreas,ChinaThevolcanicgas-liguidtypeofpyrophyllitedepositsintheSoutheasternCoastalareas,Chinaaretheproductoftectono-magama-volcanisminDiwaregions.Thepyro-phylliteore-bearingvolcanicformationwereformedinthemaximum-mobilityperiodofDiwa,whicharemainlytheLateJurassicstrataandaresecondlytheEarlyCretaceousvolcanic-sedi-mentaryrockseriesstrata.Thelithologyofthehostrockismainlyrhyoliticcrystal-vitrictuff,andthechemicalcompositionischaracterizedbyhighsiliconrichalumiumandlowiron,be-longingtothea

简介：RuralChinahasexperiencedarapidandfar-reachingtransitioninthepastthreeorfourdecadessinceDengXiaopinglaunchedeconomicreformsin1978.AsChinaevolvesintoamajorityurbancountry,theseprocessespresentanumberofchallengestotheruralareaswhichhavebeenconfrontedwithsignificantchangesandsubsequentrestructuringofruralsocio-economicmorphologyandterritorialspatialpatterns,includingchangesindemographicstructures,employmentopportunities,communityorganization,lifestylesandstandardsofliving,accessibility,ruralcultureaswellastherestructuringofruralindustriesandruralproduction,livingandecologicalspace(Woods,2005;Longetal.,2012;Long,2014).

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简介：Thepaperdealswiththebackgroundfeatures,formationanddistributionofthechemicalel-ementsK,Na,Ca,Mg,Si,Fe,Mn,Cr,Ni,V,Co,Ti,Mo,Cu,Pb,Zn,As,Hg,Cd,Be,Li,Sr,B,F,Cl,BrandIinthegroundwaterintheregionofthemiddleandlowerreachesoftheYangtzeRiverandtheirrelationstothecompositionofthewater-bearingmedia,propertiesoftheoverly-ingrocksandsoils,redoxenvironment,andgroundwaterflowcondition,mineralizationandpHofgroundwater.

简介：Summarizingtheexistingdataofseismologicalandgeologicalinvestigationsanclorstrongandintermediate-strongearthquakesintheSichuanbasinanditsadjacentareasaccumulatedbytheseismologicalandpetroleumorganizationsinSichuanandoftheresultsofseismicprospectinganddetailedexplorationinChengdudepressionduringthelast20yearspermittednstostudythetypesanddistributionofhiddenstructuresinChengdudepressionanditsadjacentareas,inparticular,toidentifyindetailthe"hiddenfaults"intheChenngdu-Deyangareaontheonehand;TheobtaineddataindicatethattheNE-trendingXinjinfaultrunsnorthwardanddiesoutinthesouthofPenzhentownofShuangiiuCounty.Meanwhile,westudiedgeneticrelationsofseismicactivitytoactivefaultsandtheircorrespondingmovementcharacteristicsontheotherhand.Moreover,thesurfacefaultsanddeep-seatedfaultsareclearlydefinedandoutlined,and5typesofseismogenicfaultssuggested.TheknowledgethusobtainedenablesustodelimitthefocalzonesforpotentialstrongearthquakesinChengdudepression.Thestudysuggeststhatazoneof40kmwideandmorethan100kmlongonsidesalongtheChengdu-Deyanglinehasastableseismogeologicalbackgroundandgoodengineering-seismologicalconditions.

简介：背景错误协变性在任何变化数据吸收系统起一个重要作用，因为从观察的信息怎么在模型空格并且在不同模型variables.In之间被散布，决定这份报纸，在在一个有限区域上的背景错误协变性的表示的直角的小浪的使用是WRF模型和它的3D增值商系统上的studied.Based，用到模型背景错误协变性的直角的小浪的一个算法各是developed.Because小浪功能包含