简介：Thebasin-rangecouplingrelationisaleadingsubjectofthemoderngeology.Ingeometry,relationsofthistypeincludecouplingsbetweenstretchedorogenicbeltanddown-faultedbasin,compressionalorogenicbeltandforelandbasin,strike-sliporogenicbeltandstrike-slipbasinandsoon.Faultchainsarethekeyforthesecouplingsandtherearetypicalexamplesforallthesecases.TheNorthChinadown-faultedbasiniscoupledwestwiththeTathanguplift,eastwiththeJiao-LiaoMountains,northwiththeYanshanorogenicbeltandsouthwiththeDabieorogenicbelt,thatistosay,thecentraldown-faultedbasinandthesurroundingorogenicbeltsbearacouplingrelationwithinauniformdynamisticsystem.Studyshowsthatthecentraldown-faultedbasinandtheNorthChinamantlesub-plumestructurehaveacloserelationduringtheirformation.Owingtointensivemantlesub-plumeuplifting,thebottomofthelithospheresufferedfromresistance,whichcausedthelithosphereoftheeasternNorthChinatobeheated,thinnedandfault-depressed.Meanwhile,mantlerocksthatweredetachedoutwardsintheshapeofmushroomwasdissectedbysurroundingductileshearingzones,whichleadtodecompressionandunloadingtogeneratehypomagmas,andaseriesofmantle-branchstructureswereformedaroundthedown-faultedbasin.Thereisanobviouscomparabilityamongthesemantlebranchstructures(orogenicbelts),andtheyhavebasin-rangecouplingrelationswiththecentraldown-faultedbasins.

简介：Aone-dimensionaltime-dependentphotochemicalmodelisusedtosimulatetheinfluenceofion-producedNOxandHOxradicalsontheAntarcticozonedepletioninpolarnightandpolarspringatalatitudeof73degreessouth.Verticaltransportandnitrogen-oxygen(NOx).hydrogen-oxygen(HOx)productionbyionicreactionshavebeenintroducedintothemodel.NOxandHOxproducedbyprecipitatingionsaretransportedintothelowerstratospherebyverticalmotionandhavesomeeffectsinthedevelopmentoftheAntarcticozonedepletion.Fromwinterthroughspringthecalculatedozonecolumndecreasesto269.4DU.However,thisvalueissignificantlyhigherthanthetotalozoneobservedatseveralAntarcticozonestations.

简介：象lumped参数模型那样的分离模型和有限元素模型广泛地在地震的土壤扩大的解决方案被使用。然而，任何一个模型都精确地不估计土壤沉积物的自然频率，也不模仿一抑制频率独立。这研究基于模式等价方法为分层的土壤沉积物的一个维的粘弹性的反应分析开发一个新分离模型。新分离模型是一系列集中的群众，弹簧和缓冲筒与一种特殊配置描绘的一个一个维的相等的multi-degree-of-freedom(MDOF)系统。相等的MDOF系统的动态反应是导出的经分解，物理参数以形式的性质被提出。相等的MDOF系统与可得到的理论解决方案通过扩大函数的比较被验证。在相等的MDOF系统的自由(DOF)的度的适当数字被估计。有存在的相等的MDOF系统的比较研究分离模型被执行。建议相等的MDOF系统罐头确切介绍土壤存款抑制的自然频率和hysteretic并且向更精确的结果提供更少DOF，这被显示出。

简介：Mangrovesaccumulatesedimentarysequences,wherecorescanprovidehistoricalrecordsofmangroveevolutionwithpastclimatechangeandhumanactivity.ThestudytracedthehistoryofmangroveevolutionduringthepastonehundredyearsinamangroveswampofMaoweiSea,SWChina.Thesedimentationrates(0.38-0.95cmyr-1)werecalculatedonthebasisofln(210Pbxs/Al)andmassdepthinthecoresediments.Chemicaltracers,suchasδ13CorgandC:Nvalues,wereutilizedtotracethecontributionofmangrove-derivedorganicmatterusingaternarymixingmodel.Becauseofpotentialdiageneticalterationand/oroverlapintheisotopicsignaturesofdifferentcomponents,simultaneoususeofmangrovepollendiagramscanhelptosupplementsomeoftheselimitations.Combinedwithmangrovepollen,mangroveevolutionwasreconstructedandcouldbedividedintothreestages:flourishment（1886-1905AD）,slightdegradation（1905-1949AD）andrapiddegradationperiod（1949-2007AD）,whichwasconsistentwithpreviousreports.Thereclamationofmangroveswampstoshrimppondswasthemajorreasonforrapiddegradationofmangroveecosystemsinrecentyears,ratherthanclimatechangeintheregion.

简介：性能基于设计为估计大楼的地震要求成为一个有效方法。在不对称的计划高大楼更高的模式和扭转的效果是关键的。连续形式的闲差事(CMP)过程是过程之一考虑这些效果。另外，在以前的研究，在闲差事分析的土壤结构相互作用(SSI)的影响被忽略。在这份报纸，CMP过程就SSI而言为中间的单程的不对称的计划和高楼大楼被修改。扩大CMP(ECMP)过程被建议以便克服CMP过程的一些限制。在这方面，有不对称的计划的10，15和20座故事大楼就假定三个不同土壤条件的SSI而言被学习。用在一套双向地面运动下面的非线性的反应历史分析；这些大楼的准确回答是计算的。然后，ECMP过程被把这个过程的结果与历史作为一个准确答案以及形式的闲差事分析过程和FEMA356负担模式结果的非线性的时间作比较评估。结果表明ECMP过程的精确性。

简介：TakingmemberoneofYingchengFormationofCretaceousinXudongarea,XushenGasFieldofSongliaoBasinforanexampleandaimedatthediachronousproblemgenerallyexistedinvolcanicreservoirdivision,firstlyadvancedthemethodoftwostepsandtwounitesintheresearchesofvolcanicreservoirfinelydivisionthatguidedbythemethodthatsourcescontrolledandfoundedthestratigraphictrellis.Inthisprocess,volcanicedificesandbodieswereidentifiedandtraced.TheresultsindicatedthataimedstratainstudyareascouldbecarveduptosixlayersofYC1I1,YC1I2,YC1I-II,YC1II1,YC1II2andYC1IIIfromthetoptothebottom.Analyzingcausesandfirmlyunitedofwelldataandseismicdatacouldachievefinestratigraphicdivisionofvolcanicreservoir.Surfacesoflayersandvolcanicbodieswerebasicallyunanimousinsidedirection.Stratuminclinationgraduallyreducedwiththedistancesincreasedfromcraters.Theresultsofvolcanicreservoirdivisionhadpreferableconsistencywithlithologiesandvolcaniclithofaciesanddynamicdevelopmentdata.Theresearchesofferedausefulmethodtostratigraphicdivisionofvolcanicreservoirandithadveryimportantsignificancetoeffectivedevelopmentofvolcanicreservoirinpractice.