简介：Ｔｈｅａｐｐｌｉｃａｔｉｏｎｏｆｍｉｃｒｏｗａｖｅｒｅｍｏｔｅｓｅｎｓｉｎｇｔｅｃｈｎｏｌｏｇｙｉｎｒｏｃｋ　ｍｅｃｈａｎｉｃｓＮａｉ－ＧｕａｎｇＧＥＮＧ（耿乃光）；Ｚｈｅｎｇ－ＦａｎｇＦＡＮ（樊正芳）；Ｑｕａｎ－ＱｕａｎＪＩ（籍全权）；Ｃｈｅｎｇ－...

简介：AstudyoftheKunlunshanearthquakeofMS=8.1basedonobservedcoseismicstrainstepsfromtheboreholestrainmonitoringnetworkoverChinahasbeencarriedoutwithsomeinterestingresults.Firstly,manyrecordingsdisagreewiththeoreticcalculationusingstaticdislocationmodel.Secondly,abnormallylargestrainstepsareobservedatquiteafewstationsinthetectonicallyactiveeast-northernChina,whileintherelativelyinactiveeast-southernChinanoobviousstepsarerecorded.Itisinferredthatseismicstresstriggeringmaysignificantlyaffectremoteseismicstrainfield.Inotherwords,whetherremotefaultingbeseismicallytriggeredornotmaydeterminethepatternoflocalseismicstrainchanges.FurthercomparisonstudyresultsofMarch11,1999ZhangbeiearthquakeandNovember1,1999Datongearthquakeshowthatthespecificpatternofseismiczoneshasobviousinfluenceonseismicstrainchangesintheregion.Thissupportstheideathatobservedabnormalstrainstepsmightbeproducedbycoseismiclystress-triggeredlocalfaulting.

简介：Developmentandtestingofaseriallymultiplexedfiberopticsensorsystemisdescribed.Thesensordiffersfromconventionalfiberopticacousticsystems,asitiscapableofsensingAEemissionsatseveralpointsalongthelengthofasinglefiber.Multiplexingprovidesforsinglechanneldetectionofcracksandtheirlocationsinlargestructuralsystems.AnalgorithmwasdevelopedforsignalrecognitionandtaggingoftheAEwaveformsfordetectionofcracklocations.Laboratoryexperimentsonplainconcretebeamsandpost-tensionedFRPtendonswereperformedtoevaluatethecrackdetectioncapabilityofthesensorsystem.Theacousticemissionsensorwasabletodetectinitiation,growthandlocationofthecracksinconcreteaswellasintheFRPtendons.TheAEsystemispotentiallysuitableforapplicationsinvolvinghealthmonitoringofstructuresfollowinganearthquake.

简介：Inthispaper,theprogressanddevelopmentonremotesensingtechnologyappliedinearthquakemonitoringresearcharesummarized,suchasdifferentialinterferencesyntheticapertureradar(D-InSAR),infraredremotesensing,andseismo-ionosphericdetecting.Manynewmonitoringdatainthisdomainhavebeenused,andnewdataprocessingmethodshavebeendevelopedtoobtainhigh-precisionimagesaboutcrustaldeformation,outgoinglongwaveradiation(OLR),surfacelatentheatflux(SLHF),andionosphericparameters.Thedevelopmentinmonitoringtechnologyanddataprocessingtechniquelargelyenrichesearthquakeresearchinformationandprovidesnewtoolsforearthquakestereoscopemonitoringsystem,especiallyonthespacepart.Finally,newdevelopingtrendinthisareawasintroduced,andsomekeyproblemsinfutureworkwerepointedout.

简介：RemotesensingtechnologyhasbeenwidelyrecognizedforcontributingtoemergencyresponseeffortsaftertheWorldTradeCenterattackonSeptember11th,2001.Theneedtocoordinateactivitiesinthemidstofadense,yetrelativelysmallarea,madethecombinationofimageryandmappeddatastrategicallyuseful.Thispaperreviewstheroleplayedbyaerialphotography,satelliteimagery,andLIDARdataatGroundZero.Itexamineshowemergencymanagersutilizedthesedatasets,andidentifiessignificantproblemsthatwereencountered.Itgoesontoexploreadditionalwaysinwhichimagerycouldhavebeenused,whilepresentingrecommendationsformoreeffectiveuseinfuturedisastersandHomelandSecurityapplications.Toplanadequatelyforfutureevents,itwasimportanttocaptureknowledgefromindividualswhorespondedtotheWorldTradeCenterattack.Inrecognition,interviewswithkeyemergencymanagementandgeographicinformationsystem(GIS)personnelprovidethebasisofthispaper.Successfultechniquesshouldnotbeforgotten,orseriousproblemsdismissed.AlthoughwidelyusedafterSeptember11th,itisimportanttorecognizethatwithbetterplanning,remotesensingandGIScouldhaveplayedanevengreaterrole.Togetherwithadataacquisitiontimeline,anexpandeddiscussionoftheseissuesisavailableintheMCEER/NSFreport'EmergencyResponseintheWakeoftheWorldTradeCenterAttack:TheRemoteSensingPerspective'(HuyckandAdams,2002).

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