简介：Theauthorsstudiedtheseismicactivity,precursoryanomaliesandabnormalanimalbehaviorbeforetheApril14,2010MS7.1Yushuearthquake.AnalysisshowedthatanomalieswerenotrichbeforetheMS7.1Yushuearthquake,butprominentanomalieswereobserved,suchasthelongandmid-termtrendanomalycharacterizedbytheseismicquiescenceofMS6.0,MS5.0andMS4.0earthquakes,andtheanomaliesinprecursorobservationofsurfacewatertemperatureinYushuandDelinghaandelectromagneticmeasurementinPingan.Therewerealargenumberofanimalbehavioranomaliesappearingoneweekbeforetheearthquake.AnM4.7earthquakeoccurred130minutesbeforethemainshock.Inthispaper,westudiedthedynamicprocessoftheYushuearthquakepreparationusingtheearthquakefocalmechanismsolutionsontheBayanHarblockboundarysince1996.TheresultsshowthattheKalakunlunM7.1earthquakein1996,theManiM7.5earthquakeandtheYushuMS7.1earthquakehavethesamedynamicprocess.Longandmid-termtrendanomaliesmayberelatedtothedynamicsofevolutionofdifferentearthquakes.Thispaperalsodiscussestherecurrenceintervalofstrongearthquakes,foreshockidentificationandprecursorobservationoftheYushuMS7.1earthquake.

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简介：Basedondatacollectedfromatemporalseismicnetwork,andinadditiontothedatafromsomenearbypermanentstations,weinvestigatethevelocitystructureandseismicityintheRongchanggasfield,wheresignificantinjection-inducedseismicityhasbeenidentified.First,weusereceiverfunctionsfromdistantearthquakestoinvertdetailed1-Dvelocitystructuresbeneathtypicalstations.Then,weusethedouble-differencehypocenterlocationmethodtore-locateearthquakesofthe2010ML5.1earthquakesequencethatoccurredintheregion.There-locatedhypocentersshowthatthe2010ML5.1earthquakesequencewasdistributedinasmallareasurroundingmajorinjectionwellsandclusteredmostlyalongpre-existingfaults.Majorearthquakesshowafocaldepthlessthan5kmwithadominantdepthof～2km,adepthofmajorreservoirsandinjectionwells.Wethusconcludethatthe2010ML5.1earthquakesequencemighthavebeeninducedbythedeepwellinjectionofunwantedwateratadepth～3kmintheRongchanggasfield.

简介：Basedonthefittingonpaleoearthquakedataofintra-plateregionsinthenorthernpartofChi-naandgivingastatisticalmodeloftimeinterdependence,thepotentialdamageearthquakesinadefinitefutureperiodandcharacteristicsofpresentshocksalongtheLingwufaulthavebeenanalyzedbyusingdangerousprobabilityfunctionandsomenewdataconcerned.Wehavein-ferredthatthefaulthasenteredaperiodthatearthquakeswillprobablyoccur.ThereexistsapotentialdangerthatastrongearthquakewithMs7.0-7.5willoccurin10-100a.

简介：统计分析九江1井2008--2011年水位、水温在多次大震中的同震响应特征，结果显示：水位通常表现为在正常背景下振荡，水温则通常表现为突降后恢复正常，水位和水温对远场大震的同震响应存在着一致性。同时，九江1井水位对地震的同震响应灵敏性优于同井水温观测，但水位观测受降雨影响．且气压效应明显。

简介：论述1∶1000数字化地形测量产品作业方法与主要技术。

简介：将兰州台的VSQ与CZB-1仪的观测资料质量、变化趋势、潮汐响应函数及映震能力进行了对比分析，认为：VSQ的观测资料的质量比CZB-1要好，因CZB-1的资料存在漂移现象；在潮汐因子和相位滞后方面，VSQ比CZB-1反应灵敏；但CZB-1的映震能力比VSQ强。

简介：正Thethesisofthepaper,whichistheobjectofthisDiscussion,isthattheconsiderabledamagesufferedbytheBasilica,aftertheearthquakeofL'Aquilain2009,wastheexclusiveresultoftheinterventionofseismicimprovementofthenaves,madein2000;such