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1、NaturalHazardsandEarthSystemSciences(2003)3:135–149NaturalHazardscEuropeanGeosciencesUnion2003andEarthSystemSciencesSeismictriggeringoflandslides,PartA:FieldevidencefromtheNorthernTienShanH.-B.Havenith1,A.Strom2,D.Jongmans1,3,K.Abdrakhmatov4,D.Delvaux5,andP.Trefois´51GeomaC-LGIH,UniversityofL
2、iege,B52,4000SartTilman,Liege,Belgium2HydroprojectInstitute,VolokolamskojeShosse2,125933Moscow,Russia3LIRIGM,UniversiteJosephFourierGrenoble,BP53,38041Grenoblecedex9,France´4KyrgyzInstituteofSeismology,Mkr.Asanbai52/1,720060Bishkek-60,Kyrgyzstan5Africamuseum,DepartmentofGeology–RemoteSensing,
3、Stw.OpLeuven13,3080Tervuren,BelgiumReceived:12August2002–Accepted:24October2002Abstract.Landslidestriggeredbystrongearthquakesoftenorsoilfalls,andonlyafewofthemaffectlargevolumescausedmostoftheglobaldamageandmostofallcasualtiesofsoilorrockmaterial(Jibsonetal.,1994;HarpandJib-relatedtotheevent
4、s,suchasshownbytheM=7.7Peruson,1995).Thelatter,however,representthehighestrisktoearthquakein1970,bytheM=7.6ElSalvadorearthquakebothconstructionandlife.Awell-knowncatastrophicland-in2001orbytheM=7.4Khait(Tajikistan)earthquakeslideistheHuascaranrock-debrisavalanchetriggeredbythein1949.Theobviou
5、simpactofalandslideonthepopula-M=7.7Peruearthquakein1970,causingthedeathofmoretionisdirectlyrelatedtoitsmovement.Yet,predictionofthan18000peopleandburyingtwovillagesonitscoursefuturefailurepotentialandhencefuturerisktopopulation(Plafkeretal.,1971).Furtherexamplesarereviewedbyisnecessaryinorde
6、rtoavoidfurthercatastrophesandin-Keefer(1984),HansenandFranks(1991),Faccioli(1995)volvestheanalysesoftheoriginofseismicinstability.TheandSchusterandHighland(2001),suchasthecataclysmseismiclandslidepotentialismainlydeterminedbytheinter-(100000casualties)relatedtoloess-landslidestriggeredbyacti
7、onbetweentheregionalseismichazardandlocalgeolog-theM=8.5Haiyuanearthquake(NWChina)in1920,icalconditions.Atalocalscale,seismicfactorsinterferingtheenormousdestructioncausedbythehugeseismicallyin-withgeologicalconditionscanproducesite-specificgr