简介：ＴｈｒｅＤｉｍｅｎｓｉｏｎａｌＭｏｄｅｌｉｎｇｏｆＥｆｅｃｔｏｆＩｎｄｉａ┐ＥｕｒａｓｉａＣｏｌｉｓｉｏｎ＊ＺｅｎｇＺｕｏｘｕｎＦａｃｕｌｔｙｏｆＥａｒｔｈＳｃｉｅｎｃｅｓ，ＣｈｉｎａＵｎｉｖｅｒｓｉｔｙｏｆＧｅｏｓｃｉｅｎｃｅｓ，Ｗｕｈａｎ４３００...

简介：Unsaturatedradionuclidemigrationexperimentswereconductedinapitinsidethetestinghall.Severaltypesofradionuclideswereusedintheexperiments.Tritiumwasusedasatracerforwatermovementinunsaturatedloess.Otherkindsofradionuclideswerealsousedinordertoobtainfundamentalparametersforradionuclidemigrationsothatfurtherenvironmentalassessmentoflow—levelradioactivewastedisposalcanbecar-riedout.Mechanismsgoverningunsaturatedflowinloess,thatis,principlesofone—waylateralflow,arepresentedqualitativelyinthispaper.Andacontinuumone—dimensionalmodelforradionuclidemigrationtestingisdevelopedbasedontheex-perimentsconductedundertheparticularconditionsatthetestsite.Thedatameasuredfromthetestswerecomparedwithsolutionsofthisone—dimensionalmodel.Resultsshowthatthismodelisfeasibleformodelingradionuclidemigrationinunsaturatedloess.

简介：Continentsubductionisoneofthehotresearchproblemsingeoscience.Newmodelspresentedherehavebeensetupandtwo-dimensionalnumericalmodelingresearchonthepossibilityofcontinentalsubductionhasbeenmadewiththefiniteelementsoftware,ANSYS,basedondocumentaryevidenceandreasonableassumptionsthatthesubductionofoceaniccrusthasoccurred,thesubductionofcontinentalcrustcantakeplaceandtheprocesscanbesimplifiedtoadiscontinuousplanestraintheorymodel.Themodelingresultsshowthatitiscompletelypossibleforcontinentalcrusttobesubductedtoadepthof120kmundercertaincircumstancesandconditions.Atthesametime,thesimulationsofcontinentalsubductionunderasingledynamicalfactorhavealsobeenmade,includingthepullforceofthesubductedoceaniclithosphere,thedragforceconnectedwithmantleconvectionandthepushforceofthemid-oceanridge.Theseexperimentsshowthatthedragforceconnectedwithmantleconvectioniscriticalforcontinentsubduction.

简介：Ｔｗｏ－ＤｉｍｅｎｓｉｏｎａｌＭｏｄｅｌｏｆＨｙｄｒａｕｌｉｃＦｒａｃｔｕｒｉｎｇｉｎＧｅｏｓｃｉｅｎｃｅｓ：Ｅｆｆｅｃｔｓ　ｏｆ　Ｆｌｕｉｄ　ＢｕｏｙａｎｃｙＹｏｓｈｉｔｏＮａｋａｓｈｉｍａ；ＭｉｔｓｕｈｉｒｏＴｏｒｉｕｍｉ（ＧｅｏｌｏｇｉｃａｌＩ...

简介：1.ObjectivesAsabout99%ofthenaturalgashydrate(NGH)resourcesarestoredontheseafloor,itisinevitablethatinitsprocessofexplorationandproduction,therewillbegeohazardssuchasmethaneleakage,seabedsubsidence,ecosystemdamageandevenlandslide.Therefore,asetofintegratedsystemsforenvironmentalmonitoringintheprocessofNGHproductionhasbeenproposedintheconsiderationofenvironmentaldisastersthatmayariseintheprocessofhydrateproduction.

简介：PointbarsarewelldevelopedontheYellowRiverdelta,amongwhichtheShengliIpointbaristhemosttypical.Thepointbar,beingabout4kminlengthandseveraltenstomorethan100metersinwidth,islocatedonthesouthsideoftheShengliBridgeinKenliCounty,Dongying,Shandong.Itisatypicalfine-grainedpointbarwithsilt,whichispredominant,someclayandminorplantdebrisandclayboulders.TheShengliIpointbarhascomplicated3-Dstructures.Firstly,inaplaneview,itcomprisesmainlyeightsedimentaryunits,baredge,barridge,barplatform,barplain,barchannel,bargully,barpondandbarbay,developingsidebysideandsuperimposedonebyoneinacomplexway.Secondly,itsverticalstructuresareverycomplexduetothepartialsuperimpositionofthe8sedimentaryunits.Besideshydatogenesis,veryintensivewinderosion,eolian,iceandmeltwateractionsarealsovisibleontheShengliIpointbar.Thecomplexformismadeevenmorecomplicatedbecauseoftheaboveco-actions.

简介：

简介：多层的沙岩水库全球性发生并且当前在国际生产。这些水库的3D特征太复杂，不能被一般structural-facies-reservoir建模精确地描出。鉴于特殊地质的特征，例如沙岩和mudstoneinterbeds的垂直建筑学，侧面的稳定的沉积和水库poroperm和液体分发的强壮的异质，我们为多层的沙岩水库的3D描述开发了一个新三阶段、六阶段的过程。过程包括二阶段的结构的建模，二阶段的外形建模和水库性质的二种类型的建模。用这个过程，我们建立了形成的模型结构，沙身体结构和microfacies，水库外形和性质包括孔，渗透和煤气的浸透并且提供了3DSebei多层的沙岩气体地的好规模的、系统的描述，中国。这个新过程，由Sebei煤气的地验证了，能被使用描绘类似的多层的沙岩水库。

简介：在东方半球的PKP(DF)的变细以同时解释一种思索的关系的多重散布被检验，相应于强壮的变细的一个相对快的速度异例。有一个维的随机的速度变化的反射率synthetics与振幅比率和微分旅行为赤道的路径PKP(Cdiff)-PKP(DF)预定的PKP(DF)/PKP(Cdiff)的观察相比。有5%，6%，和7%的标准差在的P波浪速度变化的Gaussian分布最高内部核心的200km在是比在东方半球的典型结构稍微快的速度结构上被附加，根据仅仅一个维的结构被考虑，它是可能的解释旅行时间和振幅数据。在二的scatterer分发特征、三尺寸的统计数值的进一步的考试被要求获得一个现实主义的结论。

简介：vadose地区的厚度在垂直地下水起一个关键作用再装。自从过去的十年起，水桌子的衰落在诺思中国平原由于长期的地下水在利用上导致了深vadose地区。一个维的易变地浸透的流动模型被Hydrus-1D软件建立，模拟分别地在稳定、连续的衰退的水桌子下面被运用估计vadose地区的厚度的增加的影响在上再装进程，数量并且再装时间。Luancheng区域被选择到估计再装就稳定、连续的衰退的水而言的数量桌子。模拟结果证明vadose地区延期的厚度的增加再装浇的过程桌子。recharge数量首先减少然后与水桌子的衰落仍然保持稳定。在衰退的水桌子的条件下面，评估在水由流动再装桌子过高估计recharge数量。一般水准年度再装Luancheng区域的率是134mm/a。

简介：我们把周围的噪音断层摄影术用于在从76个车站的地区性的网络的2008年1月1日和2008年12月31日之间的地震数据由中国地震管理部署了的连续三部件的宽带。周围的噪音跨关联被执行生产每车站对的草地功能。在从6～50s的时期以内，瑞利和爱波浪分散曲线用多重过滤器分析方法被测量。然后三维(3-D)从表面的S波浪速度结构击倒到70km从瑞利和爱波浪分散结果被转换。获得的S波浪速度地图在学习区域与不同地质、构造的特征显示出强壮的侧面的变化和相互关联很好。四川盆由于厚沉积存款，但是高在浅深度显示低速度在中间降低外壳中的速度；东方西藏的高原清楚地在它与外壳的流动模型建议解释机制一致的mid-to-lower外壳中与一个低速度的地区被展示高举并且为西藏的高原的变丑的模式。同时，我们的结果也展出外壳的厚度从东方西藏的高原减少了到四川盆。

简介：Thermalmaturationandpetroleumgenerationmodelingofshalesisessentialforsuccessfulexplorationandexploitationofconventionalandunconventionaloilandgasplays.Forbasinwideunconventionalresourceplayssuchmodeling,whenwellcalibratedwithdirectmaturitymeasurementsfromwells,cancharacterizeandlocateproductionsweetspotsforoil,wetgasanddrygas.Thetransformationofkerogentopetroleumisassociatedwithmanychemicalreactions,butmodelstypicallyfocusonfirst-orderreactionswithratesdeterminedbytheArrheniusEquation.AmisconceptionhasbeenperpetuatedformanyyearsthataccuratethermalmaturitymodelingofvitrinitereflectanceusingtheArrheniusEquationandasingleactivationenergy,toderiveatime-temperatureindex(∑TTIARR),asproposedbyWood(1988),isflawed.ThisclaimwasinitiallymadebySweeneyandBurnham(1990)inpromotingtheir'EasyRo'method,andrepeatedbyothers.Thispaperdemonstratesthroughdetailedmulti-dimensionalburialandthermalmodelinganddirectcomparisonofthe∑TTIARRand'EasyRo'methodsthatthisisnotthecase.The∑TTIARRmethodnotonlyprovidesaveryusefulandsensitivematurityindex,itcanreproducethecalculatedvitrinitereflectancevaluesderivedfrommodelsbasedonmultipleactivationenergies(e.g.,'EasyRo').Throughsimpleexpressionsthe∑TTIARRmethodcanalsoprovideoilandgastransformationfactorsthatcanbeflexiblyscaledandcalibratedtomatchtheoil,wetgasanddrygasgenerationwindows.Thisisachievedinamore-computationally-efficient,flexibleandtransparentwaybythe∑TTIARRmethodthanthe'EasyRo'method.Analysisindicatesthatthe'EasyRo'method,usingtwentyactivationenergiesandaconstantfrequencyfactor,generatesreactionratesandtransformationfactorsthatdonotrealisticallymodelobservedkerogenbehaviourandtransformationfactorsovergeologictimescales.