简介：AnM8.1earthquakethatoccurredwestoftheKunlunMountainsPasshascausedmorethan20collapsebodiesorzones,whicharemainlydistributednearthesurfaceseismicrupturezone,westofHohSaiLake.Thecollapsesareoffourtypes,bedrock,soilmassandicemasscollapsesandavalanches.Thespatialdistributionandthecharacteristicsofdevelopmentofthecollapsesareanalyzedinthepaper.Comparisedwiththosecausedbyotherearthquakes,thecollapsesaresmallerinscale.Inadditiontothelithologicalcharacteristicsofthecrustalmedia,topographic,geomorphicandclimaticfactors,weakerseismicgroundmotionisanimportantcauseforformationofthesmaller-scalecollapses.Thelongsurfacerupturezoneandweakergroundmotionareimportantfeaturesoftheseismicrupture,whichmayberelatedtothestructureofthepreexistingfault.

简介：TheTianqiaogou-Huangyangchuanfaultlieseastofthemainpeak,LenglonglingMount,intheeastpartoftheQilianMountainsandisoneofthemajoractivefaultsontheeasternsectionoftheQilianMountains.ThefaultisseparatedintotwosegmentsatGuanjiataivillage,theeasternandwesternsegments,andhasundergoneobviousmovementsincetheHolocene.Sixtrencheswereexcavatedtostudythepaleoseismicactivityalongthefault.Integratedandcomparativeanalysisofsedimentsinthetrenchesreveals7paleoseismiceventsandahistoricearthquakeonthefaultsincetheHolocene.Theiragesare:eventⅠis(10743±343)aBP,eventⅡ(9038±39)aBP,eventⅢ(7050±577)aBP,eventⅣ(4847±185)aBP,eventⅤ(3562±190)aBP,eventⅥ(2476±194)aBP,andeventⅦ(1505±253),respectively,andeventⅧisthe1927GulangMs8.0earthquake.Itindicatesthatthefaultmighthavecontributedtothe1927GulangMs8.0earthquake.Thetemporalandspatialdistributionofthepaleoseismiceventsisrelativelyuniformandischaracterizedapproximatelybyaquasiperiodicrecurrence.

简介：Thethin-skinnedstructureinthecrustofthenorthernTianshanpiedmontisexploredbyan86-km-long,NS-trendingdeepseismicreflectionprofilethroughtheürümqidepressionofthenorthmarginoftheTianshanmoun-tains.OntheCDPstackingsection,thefirst-andsecond-rowparalleltoanticlinesinthenorthmarginoftheTian-shanmountainsareshownonthesegmenttothesouthoftheShihezi.Thedetachments,correspondingtothereflectioneventsatTWT2.5~3.0sand5.5~6.0srespectively,jointhecrustaldeepstructuretothereversefault-foldzone.TheManasthrustextendsdownwardsinlistricshape,mergesintothedetachmentataboutTWT2.5sandjoinstotheQingshuihethrust.Thereflectioneventson5.5~6.0sarecorrespondingtothemaindetachment,whichjoinsthelowerManasanticline,andfinallyconvergetotheJunggarSouthernMarginalFault.A12~14km-thicksedimentarybasinexistsontheregioninthenorthtotheShihezi.ThedepthoftheMohodiscontinuitybe-neaththeJunggarbasinisabout45km,andincreasessouthwardsto50km.ThecrustalstructureinferredfromthedeepseismicsoundingprofileandtheBougueranomalyinthesameregionisconsistentwiththeimagefromthedeepseismicreflectionprofile.Theseismogenicmodelofthe1906Manasearthquakeisrelatedtothefaultsystem,whichconsistsoftheQingshuihethrust,thedetachmentsandtheshallowManasramp.

简介：ThelocationandlateQuaternaryactivityoftheCentral-NorthSegmentoftheTaihangMountainsPiedmontfaultzonehavebeenstudiedbyshallowseismicsurveyandcombineddrillexploration.OurresultsshowthattheBaoding-ShijiazhuangfaultandtheXushuifaultwereactiveinthelatePleistocene,butthesouthXushuifaulthasbeeninactivesincethelatePleistocene.Themaximummagnitudeofpotentialearthquakeofthefaultsis6.0.

简介：TheinvestigationondamagestofrozensoilsitesduringtheWestKunlunMountainsPassearthquakewithMs8.1in2001showsthatthefrozensoilintheseismicareaiscomposedmainlyofmoraine,alluvialdeposit,diluvialdepositandlacustrinedepositwiththedepthvaryinggreatlyalongtheearthquakerupturezone.Thedeformationandruptureoffrozensoilsitesaremainlyintheformofcoseismicfracturezonescausedbytectonicmotionandfissures,liquefaction,seismicsubsidenceandcollapseresultingfromgroundmotion.Theearthquakefracturezonesonthesurfacearemainbrittledeformations,which,undertheeffectofsinistralstrike-slipmovement,arerepresentedbyshearfissures,tensionalcracksandcompressivebulges.Thedistributionandconfigurationpatternsofdeformationandrupturesuchasfissures,liquefaction,seismicsubsidenceandlandslidesareallrelatedtotheambientrockandsoilconditionsoftheearthquakearea.Thedistributionofearthquakedamageischaracterizedbylarge-scalerupturezones,rapidintensityattenuationalongtheQinghai-Xizang(Tibet)Highway,wherebuildingsdistributeandpredominanteffectofrockandsoilconditions.

简介：这份报纸处理从Hubin弹簧射出的气体的geochemical特征。Hubin弹簧地区，一个强壮的热排放地区，是在Tianchi火山口湖的北方边的locatedd。与不明确的爆发日期一起的很年轻的存款在Tianwenfeng的最高的区域上被发现，它可能在最近的爆发或千年爆发之一被形成了。从Hubin弹簧学习射出的气体的地球化学特征理解Tianchi火山的活动具有意义。系统地取样并且分析从Hubin弹簧射出并且讨论了他们的地球化学特征的气体的这份报纸。结果证明有深导出的气体的一个高内容，例如在Hubin弹簧地区的CO2，他，CH4和Ar。同位素的比率他躺在4之间。18和5。95Ra。平均披风导出从^4He/2^20Ne比率计算的煤气的内容并且他内容到达67.1%。Hubin触发的所有这些表演位于在高紧张和大规模释放的深气体的一条特殊的带。氦同位素的空间分发被凹度描绘，证明这个特殊区域可能与暴烈的大厦有关。释放气体从Tianchi火山代表最近的爆发的剩余气体样品，是高度可能的。然而，更多的详细研究被要求。