简介：INTRODUCTIONSoilacidificationduetoaciddepositionhasbeenoneofthemajorenvironmentalprob-lemsconcernedbysoilscientistsandecologistsfortherecent20years(vanBreemen,1990).SoilacidificationwithamarkedpHdecreaseofforestsoilswithinvarioustimeintervalshasbeenreportedinGermany,Sweden,theNetherlands,AustraliaandtheUnitedStates(van

简介：Verticaltotalelectroncontent(VTEC)timeserieswereobtainedfrom22GPSstationsneartheepicenteroftheLushanearthquake.Inthispaper,wehaveadoptedaslidingaveragemethodtodetectandanalyzeanomalousVTECassociatedwiththeearthquake.Theresultsshowthatsignificant,negativeionosphereVTECanomaliesappearedoverthe5daysbeforetheearthquake,andonthedaywhenearthquakeoccurred.ThemaximumvalueofVTECanomaliesthatexceededthelowerboundreached20TECU.ThespatialdistributionofVTECanomaliesshowedaconjugatestructure,whichshiftedtothemagneticequator,andsubsequentlymovedwestwards.

简介：OnApril20th,2013,anearthquakeofmagnitudeMW6.6occurredatLushanofSichuanonthesouthernsegmentoftheLongmenshanfaultzone,withnotypicalcoseismicsurfacerupture.Thisworkplottedanisoseismalmapoftheearthquakeafterrepositioningover400post–earthquakemacro–damagesurveypointsfrompeakgroundacceleration(PGA)datarecordedbytheSichuanDigitalStrongEarthquakeNetwork.ThismapindicatesthattheLushanearthquakehasadamageintensityofIXontheLieduscale,andthatthemeizoseismalareadisplaysanoblateellipsoidshape,withitslongitudinalaxisintheNEdirection.Noobviousdirectivitywasdetected.Furthermore,therepositioningresultsof3323earlyaftershocks,seismicreflectionprofilesandfocalmechanismsolutionssuggeststhatthemajorseismogenicstructureoftheearthquakewastheDayiFault,whichpartlydefinestheeasternMengshanMountain.ThisearthquakeresultedfromthethrustingoftheDayiFault,andcausedshorteningofthesouthernsegmentoftheLongmenshanintheNW–SEdirection.CoseismalrupturewasalsoproducedinthedeepoftheXinkaidianFault.Basedontheaboveseismogenicmodelandthepresentationofcoseismicsurfacedeformation,itisspeculatedthatthereisariskofmoremajorearthquakesoccurringinthisregion.更多还原

简介：Usingthedouble-differencerelocationalgorithm,werelocatedthe20April2013Lushan,Sichuan,earthquake(MS7.0),andits4,567aftershocksrecordedduringtheperiodbetween20AprilandMay3,2013.Ourresultsshowedthatmostaftershocksarerelocatedbetween10and20kmdepths,butsomelargeaftershockswererelocatedaround30kmdepthandsmalleventsextendedupwardnearthesurface.Verticalcrosssectionsillustrateashovel-shapedfaultplanewithavariabledipanglefromthesouthwesttonortheastalongthefault.Furthermore,thedipangleofthefaultplaneissmalleraroundthemainshockthanthatinthesurroundingareasalongthefault.Theseresultssuggestthatitmaybeeasytogeneratethestrongearthquakeintheplacehavingasmalldipangleofthefault,whichissomewhatsimilartothegenesisofthe2008Wenchuanearthquake.TheLushanmainshockisunderlainbytheseismicallyanomalouslayerswithlow-VP,low-VS,andhigh-Poisson’sratioanomalies,possiblysuggestingthatthefluid-filledfracturedrockmatricesmightsignificantlyreducetheeffectivenormalstressonthefaultplanetobringthebrittlefailure.TheseismicgapbetweenLushanandWenchuanaftershocksissuspectedtobevulnerabletofutureseismicrisksatgreaterdepths,ifany.

简介：描述的这篇论文主要理想的四个基本模型作为Kunlunshan模型，在山Lushan国家公园美化Xumishan模型，基督教徒桃树花陆地模型，模型。在有象东方山谷的东方格罗夫庙，白鹿洞学院，简洁和宁静庙宇，Lushan山谷，和别墅簇一样的理想的风景特征的山Lushan的五个典型地方被分析，并且为每个地方的基本模型的集成被讨论让现实主义的风景遵循理想的需要。而且，讨论也包含了在资源，文化，结构，函数，进程，规模和区域被展示的理想的风景的特征。在结论，在山Lushan国家公园的理想的风景是在人和自然之间的相互作用的产品。山Lushan与超过1000年的历史继承中国传统的文化的本质；并且它也在不同文化之中和冲突和改编象在自然和人文学科之间的交换一样吸收西方的文化的吗哪。自然风景能被生态的计划的方法对幸存需求和人类的文化味觉满意。

简介：Aseismicarrayoftwentyfourseismometers(Qiaojiaarray)operatedbytheInstituteofGeophysics,ChinaEarthquakeAdministrationwassituatedalongtheZemuhefaultandthenorthendofXiaojiangfault,whichisapartoftheeastboundaryoftheChuan-Dian(Sichuan-Yunnan)rhombuscrustalmass.TheQiaojiaarraystartedoperationattheendofFebruary,2012.SincethentheApril20,2013LushanMS7.0earthquakeandtheAugust3,2014LudianMS6.5earthquakehaveoccurredinthevicinityoftheQiaojiaarray.TheearthquakecataloguerecordedbytheQiaojiaarraysinceMarch,2012isusedinthisstudy.ThetemporalvariationoftheearthquakecountbeforetheLushaneventandtheLudianeventisanalyzed.Theresultsareasfollows:①AverycleargraduallyincreasingvariationofthecountofM≥2.0earthquakeswithintheregion,whereallearthquakesrecordedbytheQiaojiaarraycoveragecanbefoundbeforetheLushaneventandtheLudianevent,andtheincreasingrangeanddurationofthecountbeforetheLudianeventarebothlargerthanthosebeforetheLushanevent.②IntheregioncoveredbytheQiaojiaarray,forearthquakeswithdepthh≤10kmarisingprocessofthecountwasmanifestedbeforebothevents,alongwithanearlysamedurationofaboutfiveandahalfmonths,andforearthquakeswithdepthsh>10kmarising-droppingprocessofthecountwasmanifestbeforetheLushanevent,beforewhichtherising-droppingprocessappearedagain.Thevariationofthecountforearthquakeswithdepthh≤10kmisthereverseofthatforearthquakeswithdepthh>10km.③WithinandneartheregioncoveredbytheQiaojiaarray,thevariationofthecountmanifestsarisingprocessforearthquakeswithdepthh≤10kmorh>10kmbeforetheLushaneventandonlyforearthquakeswithdepthh≤10kmbeforetheLudianevent.Thevariationofthecountmanifestsaweakeningprocessforearthquakeswithdepthh>10kmbeforetheLushanevent.Itisshownfromtheaboveresultsthattheseismicitywit

简介：Lushan地震(~Mw6.6)在2013年4月20日发生在中国的四川省，自从2008Wenchuan地震，是在Longmenshan差错带的最大的地震。更好理解它的破裂模式，我们集中了于对差错的差错参数的影响滑倒并且执行差错用Akaikes贝叶斯的信息滑动倒置标准(ABIC)方法。基于GPScoseismic数据，我们的转换结果证明差错滑倒主要在深度被限制。最大值滑倒振幅是大约0.7m，并且分级的地震时刻是大约9.47

简介：

简介：Thepost-earthquakerapidaccurateassessmentofmacroinfluenceofseismicgroundmotionisofsignificanceforearthquakeemergencyrelief,post-earthquakereconstructionandscientificresearch.TheseismicintensitydistributionmapreleasedbytheLushanearthquakefieldteamoftheChinaEarthquakeAdministration(CEA)fivedaysafterthestrongearthquake(M7.0)occurredinLushanCountyofSichuanYa’anCityat8:02onApril20,2013providesascientificbasisforemergencyrelief,economiclossassessmentandpost-earthquakereconstruction.Inthispaper,themeansforblindestimationofmacroscopicintensity,fieldestimationofmacrointensity,andreviewofintensity,aswellascorrespondingproblemsarediscussedindetail,andtheintensitydistributioncharacteristicsoftheLushan'4.20'M7.0earthquakeanditsinfluentialfactorsareanalyzed,providingareferenceforfutureseismicintensityassessments.

简介：Near-fieldstronggroundmotionsareusefulforengineeringseismologystudiesandseismicdesign,butdenseobservationnetworksofdamagingearthquakesarestillrare.Inthisstudy,basedonthestrong-motiondatafromtheMw6.6Lushanearthquake,thegroundmotionparametersindifferentspatialregionsaresystematicallyanalyzed,andthecontributionsfromdifferenteffects,likethehanging-walleffect,directivityeffect,andattenuationeffectareseparatedtotheextentpossible.DifferentengineeringparametersfromtheobservedgroundmotionsarecomparedwiththelocaldesignresponsespectraandanewattenuationrelationofWesternChina.Generalresultsindicatethatthehighfrequencygroundmotion,likethepeakgroundacceleration,ontwosidesofthefaultplaneissensitivetothehanging-walleffect,whereasthelowfrequencygroundmotion,likethelongperiodspectralacceleration,intherupturepropagationdirectionisaffectedbythedirectivityeffect.Moreover,althoughtheMw6.6Lushanearthquakeisnotalargemagnitudeevent,thespatialdifferenceofgroundmotionisstillobvious;thus,forathrustfaultingearthquake,inadditiontothehangingeffect,thedirectivityeffectshouldalsobeconsidered.

简介：M7.0Lushan地震触发了的s山崩的一个巨大的数字。印射的山崩危险性是很重要的。证据(悲痛)和逻辑回归(LR)的重量方法广泛地为LSM(印射的山崩危险性)被使用了。然而，限制仍然存在。悲痛能够估计每个因素的不同的班的影响，但是忽视在因素之间的关联。当它不能够评估不同的班的影响时，LR能在因素之中分析关系。这份报纸为LSM建议LR和悲痛的一个联合方法，利用他们的单个优点并且克服他们的限制。1289山崩的库存被使用：70%为为确认训练并且留下是选择随机的。11个山崩条件因素在模型被采用，结果用操作特征(巨鸟)曲线的接收装置被验证。结果证明LR悲痛模型比LR模型有更好的精确性，生产在有0.802成功的价值的曲线下面的一个区域并且0.791预兆，比LR模型的高(0.715成功并且0.722预兆)。悲痛和LR的联合方法能为印射的导致地震的山崩危险性提供精确性的有希望的水平，这因此被结束。