简介：稳定河槽几何学在相当很长时间吸引了水力的工程师的注意。各种各样的标准被建议了解释一条隧道的自我形成的几何学。基于流动系统，和使用的几何编程的最佳的费用结构，现在的调查提出客观功能产出Lacey的稳定河槽尺寸。功能可能是有用的披露稳定河槽几何学的许多详情。

简介：Wienerfilteringisusedtoestimatereceiverfunctioninatime-domain.Withtheverticalcomponentof3-componentteleseismicPwaveformastheinputofaWienerfilter,receiverfunctionasthefilterresponse,andradialandtangentialcomponentsastheexpectedoutput,receiverfunctionisestimatedbyminimizingtheerrorbetweenexpectedandactualoutputs.ReceiverfunctioncanbeobtainedbysolvingtheToeplitzequationusingtheLevinsonalgorithm.Thenon-singularityoftheToeplitzequationensuresthestabilityofWienerDeconvolution.BothsyntheticandobservationalseismogramcheeksshowthatWienerDeconvolutionisaneffectivetime-domainmethodtoestimatereceiverfunctionfromteleseismicPwaveform.

简介：自由民建议的光线的基础功能(RBF)插值途径被用来解决遇到在的反的问题记载得好并且另外的petrophysical问题。途径是根据物理岩石数据集在实验室预言petrophysical性质，它包括形成因素，粘性，渗透，和分子的作文。然而，这条途径不在插值结果上考虑刻度数据的空间分发的效果。这研究基于自由民RBF插值途径，联合起来的基础功能一致地被在空间领域占据建议一条新RBF插值途径。二条途径的反的结果被使用我们的数据集比较地分析。我们决定尽管二条途径的插值效果是相等的，新途径为当数据库大时，减少基础函数的数字更灵活、有益，导致插值函数表达式的简化。然而，当数据簇是差距很大的时，中央数据的预言的结果足够地没满足。

简介：DuringtheHercgnianmovcment,SouthChinadevelopedintothepeakperiodofPlatformstage,whichbecameapartofthcAncicntEastChinaPlatformReSion.However,thcreepisodicallyand1ocal-lyoccurredrelativclymobilcbeltsnamcdau1acogcnsduringthispcriod.Thcseaulacogens,suchasthemiddle-lowerYangtzerivcr,thePingxian-Lcping,the

简介：主要功能面向的zoning(MFOZ此后)是为在中国优化地区性的开发的空间模式的指南，它必要经济地理的学术领域里的理论、方法学的革新。这研究肛门

简介：许多研究集中了于水平地面运动，当忽视从垂直地面motion.However产生的相关问题时，导致为水平地面运动的许多连贯功能，地震事件证明了地面的垂直部件打手势有时管理structures.In的最终的失败这份报纸，空间地面运动的一个垂直连贯功能模型基于Hao模型被建议并且疼痛模型的1个数组记录，和有效性被表明

简介：AfterreviewingtheanalyticaltheoriesofT-Scurve,somemethodsofT-Srelationship,andfuzzysetsforstudyingwatermasses,newmethodsoffittingthemembershipfunctionofoceanicwatermassesarepresentedbasedonthecharacteristicsofT-Scurvefamilyofoceanicwatermasses.ThemembershipfunctionsofoceanicSubsurfaceWaterMasswithhighsalinityandIntermediateWaterMasswithlowsalinityarefittedanddiscussedusingthenewmethods.Theproposedmethodsareusefulinanalyzingthemixingandmodifyingprocessesofthesewatermasses,especiallyintracingtheirsources.Theprinciplesandformulaeofthenewmethodsandexamplesaregiven.

简介：Amulti-functionalsolarandskylightspectrophotometerhasbeendevelopedforthestudyofatmosphericconstituentsandaerosols.Theinstrumentanditsperformancearedescribed.Duetotelescopestructureandlock-inamplificationtechniqueadopted,thesensitivityoftheinstrumentishighenoughtoconductdirectsunmoonandtwilightmeasurementforseveralatmosphericspeciesandthedegreeofpolarizationandintensityobservationforskylight.Frommeasuredresults,thetotalcolumnabundanceofatmosphericspeciesandtheopticalcharacteristicsofaerosolcanberetrieved.Inthispaper,thedailyaveragedcolumnabundanceofO3measuredinBeijingbydirectsunwascomparedwithDobsonspectrophotometernearby.Thetwodidnotshowsignificantdifference.

简介：

简介：被动tracer的概率分布函数(PDF)，由“一个吝啬的坡度”强迫了，被学习。首先，我们采取二条理论途径，Lagrangian和有条件的闭合形式体系，到学习如此的外部地强迫的被动示踪物的PDF。然后，我们在一个范围上并且为测试吝啬坡度的模型是否能被用于学习在中间的纬度混合的同温层的tracer的同温层的风遨游的中等范围的天气预报(ECMWF)的欧洲中心为理想化的随机的流动执行数字模拟地区，在哪个，并且是否一弱并且杆病房带平均数的坡度被示踪物漏通过极、热带的混合障碍维持在中间的纬度的示踪物变化的PDF与理论预言一致。数字模拟证明当散开的驱散被吝啬坡度的强迫平衡时，在随机的PDF流动，在ECMWF风中的南部半球的PDF显示出时间不变的指数的尾巴，与理论预言一致。在北半球，PDF展出non-Gaussian尾巴。然而，PDF尾巴不与理论期望一致。强迫的示踪物的PDF尾巴的长期的行为与腐烂的tracer的相比。腐烂的示踪物的PDF尾巴是时间依赖者，这被发现，并且演变向恭维比指数。

简介：Weaddnewmodulesforreceiverlunction(RF)analysisinSplitLabtoolbox,whichincludesthemanualRFanalysismodule,automaticRFanalysisandrelatedqualitycontrolmodules,andH-kstackingmodule.Theupdatedtoolbox(namedSplitRFLabtoolbox),especiallyitsautomaticRFanalysismodule,couldcalculatetheRFsquicklyandefficiently,whichisveryusefulinRFanalysiswithhugeamountofseismicdata.ChinaisnowconductingtheChinArrayprojectthatplanstodeploythousandsofportablestationsacrossChinesemainland.OurSplitRFLabtoolboxmayobtainreliableRFresultsquicklyatthefirsttime,whichprovideessentiallynewconstrainttothecrustalandmantlestructures.

简介：EstimatedGreen'sfunction(EGF)betweenstationshasbeenextractedfromambientseismicnoise,directsurfacewaveandcodawaves.Itisalsoconfirmedbylaboratoryexperimentsonultrasonicsandtheoreticalderivationsassumingdiffusivewavefield,equi-partitionofmodesorrandomsourcesonanenclosedsurface.Thismethodprovidesanewapproachtostudythecrustandmantlestructureatregionalscale,continentalscaleandglobalscale.Followingtheachievementswithseismometerrecords,therecordsofinfrasonicstation,hydrophoneandmicrophonewerealsousedtoobtaintheEGFsofdifferentwavefields.Sincesuperconductinggravimeterisabetterlongperiodinstrumentthanregularseismometer,EGFatlongerperiodisexpectedtobeobtainedwiththecrosscorrelationofgravitydata.Inthispaper,wewillshowtheEGFsextractedbycross-correlationsbetweenthesuperconductinggravimetersandtheseismometers.Boththetraveltimesanddispersioncurvesobtainedfromdifferentdatatypesareconsistent.Theresultshowsthatitispossibletoretrievethedeepstructurebythecrosscorrelationofgravitydata.

简介：基于资源卫星介绍的遥感数据的解释，这份报纸说事实在Donghai岛的陆地使用区域，位于Zhanjiang的南方，广东省，因为象陆地开垦那样的人的活动，从1986～2010在25年里由576.71hm2膨胀了；同时，在土地的类型的大变化在岛上盖住发生了。在陆地使用的明确的变化在它的生态系统服务价值导致显著转变。因此，由在这使用Costanza方法，quantificationally在它的生态系统分析变化的纸在这个岛上满足；Costanza方法是每统一岛的区域显示出服务价值的一种计算技术。它从1986～2010被发现那，特别在最近的年里，由于在僵化，钢和港口工业，栽培土地的区域，树林，草地和沙漠的快速的发展在不同的度减少了，当时为住处的陆地，工业和交通建设和水和沼泽地的区域增加了。因而，与RMB547.57漠?潦的数字相比？

简介：这研究在由使用实验直角的功能(文件结束)发生在东方亚洲夏天的500hPa检验波浪火车分析作为一个诊断工具，结果如下被总结:(1)从鄂霍次克海的海的在上游的区域发源到副热带的区域的一个波浪火车模式(OKJ模式)能在早、中间的summer.TheOKJ显示它的强壮的信号模式清楚地在欧亚大陆在第一个文件结束部件被认出(2)从Phi发源的另外的波浪火车模式

简介：Ithasbeenwellstudiedthattheγ-functionexplicitmethodcanbeeffectiveinprovidingfavorablenumericaldissipationforlinearelasticsystems.However,itsperformancefornonlinearsystemsisunclearduetoalackofanalyticalevaluationtechniques.Thus,anoveltechniqueisproposedhereintoevaluateitsefficiencyforapplicationtononlinearsystemsbyintroducingtwoparameterstodescribethestiffnesschange.Asaresult,thenumericalpropertiesanderrorpropagationcharacteristicsoftheγ-functionexplicitmethodforthepseudodynamictestingofanonlinearsystemareanalyticallyassessed.Itisfoundthattheupperstabilitylimitdecreasesasthestepdegreeofnonlinearityincreases;anditincreasesasthecurrentdegreeofnonlinearityincreases.Itisalsoshownthatthisintegrationmethodprovidesfavorablenumericaldissipationnotonlyforlinearelasticsystemsbutalsofornonlinearsystems.Furthermore,errorpropagationanalysisrevealsthatthenumericaldissipationcaneffectivelysuppressthesevereerrorpropagationofhighfrequencymodeswhilethelowfrequencyresponsesarealmostunaffectedforbothlinearelasticandnonlinearsystems.

简介：

简介：Basedonthemaximumentropyprincipleanewprobabilitydensityfunction(PDF)f(x)forthesurfaceelevationofnonlinearseawaves,X,isderivedthroughperformingacoordinatetransformofXandsolvingavariationproblemsubjecttothreeconstraintconditionsoff(x).ComparedwiththemaximumentropyPDFspresentedpreviously,thenewPDFhasthefollowingmerits:(1)ithasfourparameterstobedeterminedandhencecangivemorerefinedfittoobserveddataandhaswidersuitabilityfornonlinearwavesindifferentconditions;(2)theseparametersareexpressedintermsofdistributionmomentsofXinarelativelysimpleformandhenceareeasytobedeterminedfromobserveddata;(3)thePDFisfreeoftherestrictionofweaknonlinearityandpossibletobeusedforseawavesincomplicatedconditions,suchasthoseinshallowwaterswithcomplicatedtopography;and(4)thePDFissimpleinformandhenceconvenientfortheoreticalandpracticaluses.Laboratorywind-waveexperimentshavebeenconductedtotestthecompetenceofthenewPDFforthesurfaceelevationofnonlinearwaves.TheexperimentalresultsmanifestthatthenewPDFgivessomewhatbetterfittothelaboratorywind-wavedatathanthewell-knownGram-CharlierPDFandbetaPDF.

简介：新frontogenesis功能根据结果的变丑的绝对水平坡度的本地变化率被开发并且分析。与传统的frontogenesis功能不同，最新定义的变丑frontogenesis从动力学而非热力学的观点被导出。因此，因为温度和潮湿的isolines的压缩能被一个流动领域的变化直接导致，它为frontogenesis的学习是更直觉的。这新frontogenesis功能为因为mei-yu雨线典型地比温度坡度由一个强壮得多的潮湿坡度组成，在中国学习mei-yu前面是特别地有用的，并且包含大变丑流动。真实mei-yu的分析正面的降雨事件显示变丑frontogenesis功能显著地工作很好，基于潜在的温度坡度的一项措施比传统的frontogenesis功能生产更清楚的mei-yu前面。更重要地，变丑frontogenesis表演关上关联与随后(6h以后)降水模式和封面雨线为预后或甚至未来降水的预言的好、适用的意义。

简介：Thisstudyproposesanewidentificationalgorithmabouttheadmittancefunction,whichcanestimatethefullsetofsixaerodynamicadmittancefunctionsconsideringcrosspowerspectraldensityfunctionsabouttheforcesandtheturbulencecomponents.ThemethodwasfirstnumericallyvalidatedthroughMonteCarlosimulations,andthenadoptedtoestimatetheaerodynamicadmittanceofastreamlinedbridgedeck.Theidentificationmethodwasfurthervalidatedthroughacomparisonbetweenthenumericalcalculationandwindtunneltestsonamovingbridgesection.

简介：Basedontheexistingcontinuousboreholestrainobservation,themultiquadricfunctionfittingmethodwasusedtodealwithtimeseriesdata.Theimpactofdifferencekernelfunctionparameterswasdiscussedtoobtainavaluablefittingresult,fromwhichthephysicalconnotationoftheoriginaldataanditspossibleapplicationswereanalyzed.Meanwhile,abriefcomparisonwasmadebetweentheresultsofmultiquadricfunctionfittingandpolynomialfitting.