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

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简介：Thephysicalmeasuresofmacroscopicseismicintensityhavebeenextensivelystudiedbasedonthenewunderstandingofseismicintensityandthenewanalyticalmethodandnewdatabaseofstronggroundmotion.Newphysicalmeasuresofseismicintensityhavebeenproposed.

简介：真实波浪是multidirectional波浪。在现在的学习，为为产生multidirectional的开车信号挥动的波浪制造者的计算方法在物理波浪盆组织被建议。它的有效性被事件边界条件被建议方法的使用为决定的一个数字模型首先证实。然后，multidirectional波浪组的物理模拟在实验室波浪盆被执行。multidirectional飘动与的试验性的结果表演期望波浪groupiness，它包括不仅它的组高度而且它的组长度，能令人满意地在物理波浪盆在指定位置被产生。

简介：Thetheoreticalframeworkofvisualsimulationinvirtualrealityisdiscussed.Thenewconceptofvisualimagespaceissupposed.Onthebasisofvisualimagespace,invisualperceptivesense,VRisconsideredasaspatialsimulation.Theobjectiveofthespatialsimulationistotransformphysicalspacetovisualimagespace.Last,theprototypesystem,surveying&mappingvirtualReality(SMVR),isdeveloped,andthespacesimulationaboveisrealized.ByuseofSMVR,thereal3Drepresentation,3Dvisualanalysis,virtualplananddesignscanbeimplemented.

简介：AmovablebedphysicalmodelwasconstructedtoinvestigatehydraulicdesiltationbyflushingandlateralerosionintheTapureservoir,Taiwan.Themodelscalingisbasedontherequirementfordynamicsimilarityofcohesivesedimentdepositinitiationinflushingprocesses.Formodelscaling,flumeexperimentsinvestigatingtheinitiationofcohesivesedimentdepositswerecarriedouttoestablishtherelationshipbetweencriticalshearstressoftheflowanddrydensityofthedeposit.Experimentsinthephysicalmodelwerethenperformedtomeasurethevariationsofthereservoirwaterlevel,theoutletdischargeandtheoutflowsedimentdischarge.Theprocessesofemptyingandflushingwereobservedandanalyzedinthemainflushingchannel.Oneoftheexperimentswasconductedtosimulatetheon-siteflushingoperationsonJune11,1997.Theresultsshowedthatthetotalcumulativeflushedsedimentvolumebyphysicalmodelingwasclosetothatbynumericalsimulation.Todealwiththefloodplaindeposits,experimentsoflateralerosionasanauxiliarymethodwerealsoconductedinthephysicalmodeltoinvestigatetheeffectivenessandapplicabilityfortheTapureservoir.

简介：ThestudiesonthestructureandphysicalpropertiesoftheEarth'sinteriordonebyChinesegeophysicistsfrom1999to2002werereviewedinthispaper.Itincludesseveralresearchareas:thestructureoftheEarth'sinteriorsusingseismictomography,anisotropyoftheuppermantleinChinaanditsadjacentareas,qualityfactorQβforSwaves,subductionzone,mantlediscontinuities,physicalpropertiesofEarth'smaterialsandothers.Thereviewconcernsmainlythecontents,themethodsandtheresultsofthestudies.ItcanbeseenthatnewprogressinthestudyonthestructureandphysicalpropertiesoftheEarth'sinteriorhasbeenmadeinthelast4yearsinChina.Itisshownonthreeaspects:advancementmadeonsomepreexistentareas;pioneeringonsomenewfieldsandnewmethodsadopted.

简介：Basedontherelationshipbetweenrockphysicalpropertiesandatomicstructuresofchemicalelements,thispaperdissertatesthecharacteristicsbetweenthedifferenceandchangeinthecomprehensivephysicalpropertiesofrocks,suchasdensity,elasticity,electricalpropertyandradioactivity,etc.Theexamplesinthispapershowthatthechangeofthecomprehensivephysicalparametersofrocksreflectsthechangeofatoms,molecules,mineralsandtheirconstitutionsinrocks,andtherearesomecorrelationsbetweentheseparameters.

简介：-Basedonfieldwavedata,anempiricalformulaofwaveenvelopespectrumisgiveninthispaper.Thenthemethodsofbothnumericalandphysicalsimulationofseawavegroupswiththegivenspectrumandgroupinessparametersaresuggested.

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简介：XishuangbannaofYunnanProvinceisafamoustropicalfoggyregion.AfieldexperimentwascarriedoutfromNovember23to30of1997duringwhichfogsoccurredregularlyeveryday.Inthepaperthecharacteristicsofmacrostructureoffogareanalyzedandthephysicalprocessesofformationanddissipationoffogarestudied.TheresultsshowthattheXishuangbannavalleyfogformsfirstlyintheloweratmospherewithtwo-layerstructuresandthendevelopssuddenlyintheverticaldirectionafterreachingtheground.Furthermore,thevegetationeffectontheformationanddissipationoffogisdiscussedspecially.

简介：高周波的地震变细通常被归因于有弹性的吸收。在这篇论文，我在场高周波的地震变细上的三研究并且建议物理机制源于有弹性的显微镜的多重散布波浪的干扰。首先，我在基于为波浪繁殖的基本单位是一个nano团点的概念的二阶段的媒介在波浪繁殖上建议一个新理论。由于毛孔液体和岩石框架的弹性变化，微多重散布波浪将在通过二阶段的媒介和他们的干扰的震波的波长出现，重叠将产生高周波的地震变细。第二，我在场由当模特儿的地震播送波浪的频率反应的研究与比毛孔直径没有大的厚度薄层。结果显示高周波的震波在一个近表面的水地区稍微稀释，但是在一个近表面的煤气的地区显著地腐烂。第三，我在Songliao盆用双井的射击在近表面的水和煤气的地区里分析地震变细特征，并且证明高周波的震波在水地区稍微稀释，但是在气体，宣传的1601600Hz挥动的地区显著地腐烂。来自观察与当模特儿的结果与一致的地的地震变细特征。理论上从这些研究得出的结论支持地震变细恢复。

简介：当前的学习为词法床变化的预言集中于一个三维的数字模型的申请。在一座水库的沉积免职在10-year-flood期间被调查，模拟的结果被验证，数据源于物理模型研究。因为在原型的小谷物尺寸，合成成粒在物理模型被使用。数字计算领域是物理模型的繁殖，包括谷物尺寸和粒子的密度，以便保证相似性。CFD代码SSIIM，它解决跑方程在三尺寸，被用于模拟。在SSIIM的沉积运输被划分成推迟的沉积运输，由解决传送对流散开方程，和水流带来的碎石运输计算了，由一个实验公式计算。数字模拟的结果对应于很好物理模型学习的结果。模仿的地点和在水库的沉积免职的模式是在物理模型的观察分发的一个精确代表。

简介：Ｇｅｏｍｅｔｒｉｃａｌｔｅｘｔｕｒｅｓｏｆｆａｕｌｔｓ，ｅｖｏｌｕｔｉｏｎｏｆｐｈｙｓｉｃａｌｆｉｅｌｄａｎｄｉｎｓｔａｂｉｌｉｔｙｃｈａｒａｃｔｅｒｉｓｔｉｃｓＪＩＮＭＡ（马瑾），ＳＨＥＮＧ－ＬＩＭＡ（马胜利），ＬＩ－ＱＩＡＮＧＬＩＵ（刘力强），Ｚ...

简介：ＴｈｅｐｈｙｓｉｃａｌｉｍｐｌｉｃａｔｉｏｎｏｆｃｏｄａａｍｐｌｉｔｕｄｅｒａｔｉｏａｎｄｉｔｓｐｏｓｓｉｂｌｅａｐｐｌｉｃａｔｉｏｎＴＩＡＮ－ＺＨＯＮＧＺＨＡＮＧ（张天中）ＹＵＮ－ＳＨＥＮＧＭＡ（马支生）ＲＯＮＧ－ＬＩＡＮＧＨＵＡＮＧ（黄蓉良）Ｉｎ...

简介：Insub-tropicalcoastalwatersaroundHongKong,algalbloomsandredtidesareusuallyfirstsightedintheMirsBay,intheeasternwatersofHongKong.Acalibratedthree-dimensionalhydrodynamicmodelforthePearlRiverEstuary(Delft3D)hasbeenappliedtothestudyofthephysicalhydrographyofHongKongwatersanditsrelationshipwithalgalbloomtransportpatternsinthedryandwetseasons.Thegeneral3Dhydrodynamiccirculationandsalinitystructureinthepartially-mixedestuaryarepresented.ExtensivenumericalsurfacedroguetrackingexperimentsareperformedforalgalbloomsthatareinitiatedintheMirsBayunderdifferentseasonal,windandtidalconditions.TheprobabilityofbloomimpactontheVictoriaHarbourandnearbyurbancoastalwatersisestimated.Thecomputationsshowthat:I)Inthewetseason(May～August),algalbloomsinitiatedintheMirsBaywillmoveinaclockwisedirectionoutofthebay,andbetransportedawayfromHongKongduetoSWmonsoonwindswhichdrivetheSWtoNEcoastalcurrent;ii)Inthedryseason(November～April),algalbloomsinitiatedinthenortheastMirsBaywillmoveinananti-clockwisedirectionandbecarriedawayintosouthernwatersduetotheNEtoSWcoastalcurrentdrivenbytheNEmonsoonwinds;thebloomtypicallyflowspasttheeastedgeoftheVictoriaHarbourandnearbywaters.Finally,theroleofhydrodynamictransportinanimportantepisodicevent-thespring1998massiveredtide-isquantitativelyexamined.ItisshownthatthestrongNEtoEwindduringlateMarchtoearlyApril,coupledwiththediurnaltideatthebeginningofApril,significantlyincreasedtheprobabilityofbloomtransportintothePortShelterandEastLammaChannel,resultinginthemassivefishkill.Theresultsprovideabasisforriskassessmentofharmfulalgalbloom(HAB)impactonurbancoastalwatersaroundtheVictoriaHabour.

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简介：Themechanismsofseismically-inducedliquefactionofgranularsoilsunderhighconfiningstressesarestillnotfullyunderstood.Evaluationofthesemechanismsisgenerallybasedonextrapolationofobservedbehavioratshallowdepths.ThreecentrifugemodeltestswereconductedatRPI'sexperimentalfacilitytoinvestigatetheeffectsofconfiningstressesonthedynamicresponseoradeephorizontaldepositofsaturatedsand.Liquefactionwasobservedathighconfiningstressesineachofthetests.Asystemidentificationprocedurewasusedtoestimatetheassociatedshearstrainandstresstimehistories.Thesehistoriesrevealedaresponsemarkedbyshearstrengthdegradationanddilativepatterns.Therecordedaccelerationsandporepressureswereemployedtogeneratevisualanimationsofthemodels.Thesevisualizationsrevealedaliquefactionfronttravelingdownwardandleadingtolargeshearstrainsandisolationofuppersoillayers.

简介：IntroductionRutile,acommonoxidemineral,widelyoccursindifferentgeologicalenviron-ments.Inigneousrocks,especiallyinplutonicrocks,itexistsasaminormineralingranularform,sometimesintheformoflargecrystalsinpegmatites.Asanaccessarymineral,rutilecanbefoundinmanymetamorphicrockssuchasamphiboliteandeclogite.Itisnotararecasetofindrutileinsedimentsasadetritalmineral.

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