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简介：ＡｕｎｉｆｏｒｍｃａｔａｌｏｇｏｆｅａｒｔｈｑｕａｋｅｓｆｏｒｓｅｉｓｍｉｃｈａｚａｒｄａｓｅｓｍｅｎｔｉｎＩｒａｎＮｏｏｒｂａｋｈｓｈＭｉｒｚａｅｉ１，２）ＭＥＮＧ－ＴＡＮＧＡＯ１）（高孟谭）ＹＵＮ－ＴＡＩＣＨＥＮ１）（陈运泰）ＪＩＡＮＷＡＮＧ１...

简介：TheprimarygoalofthedemonstrationprojectendorsedbytheScientificandTechnicalCommitteeforIDNDRin1992istoensurethatnationalagenciesareabletoassessseismichazardinaregionallycoordinatedfashionbyusingadvancedmethods.China,asaRegionalCenterofCentralSouthernAsia,hascontactedwithcountriesoftheregiontorealisticallypracticeseismichazardassessmentsofContinentalAsia.AtestarealocatedinthecollisionboundarybetweentheIndianandEurasianplateswaschosentoexaminetheseismichazardassessmentapproachintheregionalcoordinates.TheseismotectonicsandthreeversionsofseismicsourcesofthetestareaaredescribedinthispaperandundertheGlobalSeismicHazardAssessmentProgram(GSHAP),guidelinesanearthquakecatalogueofthetestareawasassembled.Becauseoftheincompletenessofearthquakedataindifferentcountries,weadoptdifferenttimewindowsfordifferentmagnitudeintervalsinordertoobtaintheseismicityparametersofsources.Byu

简介：以中文Ｗｉｎｄｏｗｓ３．１为系统运行环境，以ＷＩＮＧＩＳ为基础，用ＭｉｃｒｏｓｏｆｔＶｉｓｕａｌＢａｓｉｃ４０作为开发工具，建立了荒溪分类和危险区制图模型及其信息系统．该系统由文件管理子系统、属性数据管理子系统、图形数据管理子系统、应用模型子系统等构成．应用结果验证了系统模型的各项功能，表明系统设计合理，运行稳定、安全．

简介：ThispaperselectssomerepresentativeregionstoobtaintheirG-Rrelationcurvesaccordingtotheirseismicitycharacteristics,byusingML≥2.0microseismicitydata(1970~1993)inNorthChina.TheannualoccurrencerateofeventsofeachmagnitudecanbeinferredfromtheG-Rrelation.Atthesametune,theactualannualoccurrencerateofearthquakesofhighermagnitudescanbecalculatedfromhistoricalearthquakes(1300-1993)recordedinthesameregion.Itseemsthatbothresultsarealmostthesame.Therefore,therateofeventsofhighermagnitudescanbeobtainedbyusingmicroseismicitydatawhentheproperregionisselected.However,twopointsshouldbenoticed:(1)Themethodcanonlygivetheannualoccurrencerateinaseismicitysystemandestimatethewholesituationofthesystem.(2)Whenthereisaverylargeearthquakeinandneartheperiodinwhichthemicroseismicitydataareapplied,theactualoccurrencerateofthesystem,includingthislargerearthquake,cannotbeobtainedbythismethod.

简介：ＳｙｎｔｈｅｓｉｚｅｄＰｏｉｓｓｏｎａｎｄｒｅｎｅｗａｌｍｏｄｅｌａｎｄｉｔｓａｐｐｌｉｃａｔｉｏｎｉｎｓｅｉｓｍｉｃｈａｚａｒｄａｎａｌｙｓｉｓＨａｎ－ＹａｏＣＨＥＮ（陈汉尧）ａｎｄＹｕ－ＸｉａｎＨＵ（胡聿贤）（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｐｈｙｓ...

简介：ＡｃｔｉｖｅＮｏｒｔｈｅｒｎＨｕａｓｈａｎＰｉｅｄｍｏｎｔＦａｕｌｔＺｏｎｅａｎｄＧｅｏｌｏｇｉｃａｌＨａｚａｒｄｉｎＳｈａａｎｘｉＰｒｏｖｉｎｃｅ￥ＨｏｕＪｉａｎｊｕｎ；ＨａｎＭｕｋａｎｇ；ＢａｉＴａｉｘｕ（ＤｅｐａｒｔｍｅｎｔｏｆＧｅｏｌｏｐ，Ｐ...

简介：Theauthorsstudythestructure,functionsanddataorganizationforthehazardanalysissystemofurbanpost-earthquakefireontheplatformofGIS.Ageneralhazardanalysismodelofthepost-earthquakefireispresented.TakingShanghaicentraldistrictasbackground,asystemforhazardanalysisofthepost-earthquakefireandauxili-arydecision-againstfireisdeveloped.

简介：Basedonlefttruncatedandrightcensoreddependentdata,theestimatorsofhigherderivativesofdensityfunctionandhazardratefunctionaregivenbykernelsmoothingmethod.Whenobserveddataexhibitα-mixingdependence,localpropertiesincludingstrongconsistencyandlawofiteratedlogarithmarepresented.Moreover,whenthemodeestimatorisdefinedastherandomvariablethatmaximizesthekerneldensityestimator,theasymptoticnormalityofthemodeestimatorisestablished.

简介：WecompilearegionalcatalogueofearthquakeswithmomentmagnitudeoftheCenter-SouthernAsiatestarea(20°-35°N,85°-105°E)fortheGlobalSeismicHazardAssessmentProgram(GSHAP).Therearesignificantinhomogeneousanduncompleteddata,andnuniformityofearthquakemagnitudesinthistestareabecausethisregionissituatedontheboundariesofmanycountries,suchasChina,India,Nepal,Vietnam,etc.WeestablisharelationshipbetweenGutenbergsurface-wavemagnitudeandIASPEIsurface-wavemagnitude,whichcanbeusedforconversionofdifferentmagnitudescalesintomomentmagnitudeforthiscatalogue.AcatalogueofeventswithMw≥6.0ofthistestareaisgivenattheendofthispaper.

简介：PhysiographyandsoilinMaeRimwatershed,ChiangMaiProvince,Thailandwereinvestigatedbyusingaerialphotographsandsatelliteimageinconjunctionwithfieldwork,andsoilinfiltrationrateandsoilshearresistanceweremeasuredinfield.ManyfactorsaffectingrunoffwereanalyzedusigtheIntegratedLandandWaterInformaitonSystem(ILWIS).Asaresult,amodeldeterminingfloodhazarwassetup.Threempsincludingrunoffcurvenumbermap,runoffcoefficentmap,andfloodinumdationmapwerecreated,Inaddition,thetimeofconcentrationwaspredicted.