简介：ThedetailsofseismicmonitoringnetworkandseismologicalworkinThailand,includingsomeinformationonfeltearthquakesthatoccuredfrom2000toAugust2001,arereportedhere.

简介：Inthispaper,ahistoricalreviewoftheseismicnetworkofVietnamandtheabilityofthenetworktomonitorearthquakesispresented.TheseismicactivityofVietnamasacountryofhighseismictiyinthelastcenturyandsincethebeginningofthenewcenturyisdescribed.ThecurrentstateofseismologicalresearchinVietnamandcooperationwithinstitutionsoutsideofVietnamisoutlined.

简介：Thelastdecadeorsohasseenthedevelopmentofrefinedperformance-basedearthquakeengineering(PBEE)approachesthatnowprovideaframeworkforestimationofarangeofimportantdecisionvariables,suchasrepaircosts,repairtimeandnumberofcasualties.ThispaperreviewscurrenttoolsforPBEE,includingthePACTsoftware,andexaminesthepossibilityofextendingtheinnovativedisplacement-basedassessmentapproachasasimplifiedstructuralanalysisoptionforperformanceassessment.Detailsofthedisplacement-baseds+eismicassessmentmethodarereviewedandasimplemeansofquicklyassessingmultiplehazardlevelsisproposed.Furthermore,proposalsforasimpledefinitionofcollapsefragilityandrelationsbetweenequivalentsingle-degree-of-freedomcharacteristicsandmulti-degree-of-freedomstorydriftandflooraccelerationdemandsarediscussed,highlightingneedsforfutureresearch.Toillustratethepotentialofthemethodology,performancemeasuresobtainedfromthesimplifiedmethodarecomparedwiththosecomputedusingtheresultsofincrementaldynamicanalyseswithinthePEERperformance-basedearthquakeengineeringframework,appliedtoabenchmarkbuilding.Thecomparisonillustratesthatthesimplifiedmethodcouldbeaveryeffectiveconceptualseismicdesigntool.Theadvantagesanddisadvantagesofthesimplifiedapproacharediscussedandpotentialimplicationsofadvancedseismicperformanceassessmentsforconceptualseismicdesignarehighlightedthroughexaminationofdifferentcasestudyscenariosincludingdifferentstructuralconfigurations.

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简介：Duringtheperiodof1999～2002,theChineseseismologistsmadeaseriousofdevelopmentsinthestudyonseismicsourcesincludingobservations,experimentsandtheory.Inthefieldofobservation,themethodsoftheaccuracylocationofearthquakesources,theinversionofseismicmomenttensorandthemechanismofearthquakesourceareimprovedanddeveloped.Alotofimportantearthquakeeventsarestudiedbyusingthesemethods.Theruptureprocessesoftheseeventsareinvertedandinvestigatedcombinedwiththelocalstressfieldsandthetectonicmomentbyusingthemeasurementsofsurfacedeformation.Inthefieldsofexperimentsandtheory,manydevelopmentsareobtainedincauseofseismicformation,conditionofstressandtectonics,dynamicsofearthquakerupture,rockfractureandnucleationofstrongearthquakes.

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简介：ThedevelopmentofseismicwavestudyinChinainthepastfouryearsisreviewed.Thediscussionisdividedintoseveralaspects,includingseismicwavepropagationinlaterallyhomogeneousmedia,laterallyheterogeneousmedia,anisotropicandporousmedia,surfacewaveandseismicwaveinversion,andseismicwavestudyinprospectingandloggingproblems.Importantprojectsinthecurrentstudiesonseismicwaveissuggestedasthedevelopmentofhighefficientnumericalmethods,andapplyingthemtothestudiesofexcitationandpropagationofseismicwavesincomplexmediaandstronggroundmotion,whichwillformafoundationforrefinedearthquakehazardanalysisandprediction.

简介：ThepotentialfordevastatingearthquakesintheHimalayanorogenyhaslongbeenrecognized.The2015MW7.8Gorkha,Nepalearthquakehasheightenedthelikelihoodthatmajorearthquakeswilloccuralongthisorogenicbeltinthefuture.Reliableseismichazardassessmentisacriticalelementindevelopmentofpolicyforseismichazardmitigationandriskreduction.Inthisstudy,weconductprobabilisticseismichazardassessmentusingthreedifferentseismogenicsourcemodels(smoothedgridded,linear,andarealsources)basedonthecomplicatedtectonicsofthestudyarea.Twosetsofgroundmotionpredictionequationsarecombinedinastandardlogictreebytakingintoaccounttheepistemicuncertaintiesinhazardestimation.Long-termslipratesandpaleoseismicrecordsarealsoincorporatedinthelinearsourcemodel.Peakgroundaccelerationandspectralaccelerationat0.2sand1.0sfor2%and10%probabilitiesofexceedancein50yearsareestimated.Theresultingmapsshowsignificantspatialvariationinseismichazardlevels.TheregionoftheLesserHimalayaisfoundtohavehighseismichazardpotential.AlongtheMainHimalayanThrustfromeasttowestbeneaththeMainCentralThrust,largeearthquakeshaveoccurredregularlyinhistory;hazardvaluesinthisregionarefoundtobehigherthanthoseshownonexistinghazardmaps.Inessence,thecombinationoflongspanearthquakecatalogsandmultipleseismogenicsourcemodelsgivesimprovedseismichazardconstraintsinNepal.

简介：ＡＭｅｔｈｏｄｏｆＩｍｐｒｏｖｉｎｇＳｅｉｓｍｉｃＤａｔａＲｅｓｏｌｕｔｉｏｎ：ＣｏｍｐｒｅｈｅｎｓｉｖｅＩｎｖｅｒｓｉｏｎｏｆＷｅｌｌｌｏｇｇｉｎｇａｎｄＳｅｉｓｍｉｃＤａｔａＺｈａｎｇＹｕｆｅｎ；ＨｏｎｇＦｅｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＡｐｐｌ...

简介：分叉的河隧道和象长期的捱过和侵蚀的结果的山谷，山脉，山，和斜坡的共存形成唯一的黄土地形学。Changqing地球物理的公司，处于这些复杂条件工作，为高保真处理和地震数据的好解释建立了技术的一间套房。这篇文章介绍涉及处理的数据和解释的进程并且说明结果。关键词黄土高原-地震数据处理-静电干扰-箱优化-噪音变细-在教授水平的高级工程师数据解释第一作者江家玉从北京石油研究所在地球物理的探索毕业了，一所美国学院1970。她从事了关于地震数据的全面解释的研究。现在她在Dongfang地球物理的同伴的研究院的Changqing分割工作。26篇文章被出版。她授于我国家科学与技术的班奖金，和科学与技术的进步奖金由部和局进行四十次。

简介：盖住北方Shaanxi斜坡和Tianhuan消沉的黄土高原由地区性的单斜层组成，在东方高、在西方低，与不到10的剧降。在这个区域的结构的运动是弱的以便差错和本地结构很好没被开发。作为有大小的结果，众多的宽、轻轻的鼻子和小陷井，不到50m在大向西蘸的单斜层上被开发。包括在Ordos盆的中生代油水库和古生代的煤气的水库，水库是主导地有结构的水库的一个小数字的lithologic。单个水库与大侧面的变化，强壮的anisotropy，低孔，低渗透，和低丰富作为薄被描绘。为预言微妙的lithologic水库的水库厚度，物理性质，和烃潜力的一系列途径基于侵蚀表面的解释被建立。关键词当模特儿-侵蚀表面-解释-Seisnmic数据和水库预言

简介：在外壳和披风的地震形象的一个普通特征是一个layering模式。Layering结构确实在多重规模存在，例如在本地、地区性的规模的分层的阶层和不顺从，并且波动在外壳和披风中的地震断绝。然而，layering人工制品也在地震处理和数据范围由于限制存在。为到在地图上反射镜的地震叠的方法有一个趋势并且散布层进along-isochron。相反，地震断层摄影术方法与along-raypath油迹和人工制品趋于到在地图下面亚horizontal层各种各样贬低过程。更好在地震形象识别信号和人工制品，理解各种各样的人工制品的起源并且做在不同数据和方法的解决方案之间的小心的比较是必要的。

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

简介：TheFederalHighwayAdministration(FHWA)sponsoredalarge,multi-yearprojectconductedbytheMultidisciplinaryCenterforEarthquakeEngineeringResearch(MCEER)titled"SeismicVulnerabilityofNewHighwayConstruction"(MCEERProject112),whichwascompletedin1998.MCEERcoordinatedtheworkofmanyresearchers,whoperformedstudiesontheseismicdesignandvulnerabilityanalysisofhighwaybridges,tunnels,andretainingstructures.Extensiveresearchwasconductedtoproviderevisionsandimprovementstocurrentdesignanddetailingapproachesandnationaldesignspecificationsforhighwaybridges.Theprogramincludedbothanalyticalandexperimentalstudies,andaddressedseismichazardexposureandgroundmotioninputfortheU.S.highwaysystem;foundationdesignandsoilbehavior;structuralimportance,analysis,andresponse;structuraldesignissuesanddetails;andstructuraldesigncriteria.

简介：Thestabilityofsubmarinegeologicalstructureshasacrucialinfluenceontheconstructionofoffshoreengineeringprojectsandtheexploitationofseabedresources.Marinegeologistsshouldpossessadetailedunderstandingofcommonsubmarinegeologicalhazards.Currentmarineseismicexplorationmethodsarebasedonthemosteffectivedetectiontechnologies.Therefore,currentresearchfocusesonimprovingtheresolutionandprecisionofshallowstratumstructuredetectionmethods.Inthisarticle,thefeasibilityofshallowseismicstructureimagingisassessedbybuildingacomplexmodel,anddifferencesbetweentheseismicinterferometryimagingmethodandthetraditionalimagingmethodarediscussed.Theimagingeffectofthemodelisbetterforshallowlayersthanfordeeplayersbecausecoherentnoiseproducedbythismethodcanresultinanunsatisfactoryimagingeffectfordeeplayers.Theseismicinterferencemethodhascertainadvantagesforgeologicalstructuralimagingofshallowsubmarinestrata,whichindicatescontinuoushorizontalevents,ahighresolution,aclearfault,andanobviousstructureboundary.TheeffectsoftheactualdataappliedtotheShenhuareacanfullyillustratetheadvantagesofthemethod.Thus,thismethodhasthepotentialtoprovidenewinsightsforshallowsubmarinestrataimaginginthearea.

简介：Thispaperprovidesanoverviewoftheideasandmethodsoftheassessmentofseismicintensitybasedonremotesensinganddescribesthemodelsusedtoassesstheremotesensingbasedsyntheticseismicdamageindexandseismicintensity.Withthedataofdamageinformationextractedfromthehigh-resolutionaerialimagesintheearthquake-strickenareas(Jiegutown,Yushucity,Qinghai)ofthe2010MS7.1Yushuearthquake,andthedataobtainedthroughpost-earthquakefieldinvestigation,theseismicdamagedegreeandseismicintensityhavebeenestimated.TheanalysisoftheresultsshowsthattheseismicintensityinYushucityisestimatedasIXthroughtheRSassessmentmethod,whichisconsistentwiththeresultestimatedaccordingtothegroundsurveys.TheresultsarediscussedinthelastpartofthepaperandindicatethattheRStechniquesareexpectedtobeoneofthemainmethodsusedtoestimatetheseismicintensityvaluesintheemergencystage.

简介：高分辨率的浅地震方法是在近的表面描述的最广泛地使用的地球物理的方法。然而，在许多情况中，解释地震图象能是似是而非的。在这篇文章，我们在场因为不适当的限制，源于表面波浪(MASW)的地震思考，嘘波浪地震思考，和多信道的分析调查的P波浪的三案例研究不正确地在调查地点表面或表面下的条件上被解释。一个P波浪思考调查特征首先作为一个浅差错地区被解释，但是当获得通过了道路交叉，它以后决心源于背景噪音的高水平。一个嘘波浪地震思考调查特征被解释是一个反向的蘸滑倒差错，但是指向钻证明它是进基岩表面的深本地的侵蚀。在MASW调查，最后，一个陡峭地蘸的特征首先作为一条基岩山谷被解释。然而，以后探索的钻显示了特征是严重地抑制了大多数应用表面波浪频率乐队的很软的湖沉积的浅层。尽管起始的解释是不正确的，他们在地球物理学者和地质学家之中刺激了讨论并且以前为在科学家之间的有意义的合作和讲话强调了需要，在期间，并且在地球物理的数据获得以后。

简介：Thisstudyshowscrossholeseismictechnologycanoffernotonlyimagesofcrossholetomography,butalsoreflectsectionsofhighresolution.Properprocessingofcrossholeseismicreflectdataproducesahighqualitysectionbetweentwowells.Thinbeds,faultsandothergeologicphenomenacanbefoundclearlyinthissection.Sodetailedreservoirdescriptioncouldbeformedtoguidetheoilfielddevelopmentplan.Meanwhile,crossholetechnologycanbedirectlyusedtomonitortheprocessofoilfieldinjectionandenhancedoilrecovery,soithasawidescopeofusageinoilfielddevelopment.