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简介：AccordingtothestatisticalanalysisoftheChinaAssociationofAutomobileManufacturers,becauseoftheimpactoftheSpringFestivalholiday,productionandsalesoftheautomobilesshowedarelativelyfastmonth-on-monthdecline,andthedeclineofpassengercarswasmoreobviousinFebruary2019.

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简介：Ｃａｔａｌｏｇｕｅｏｆｅａｒｔｈｑｕａｋｅｓ（Ｄｅｃｅｍｂｅｒ，１９９３──Ｆｅｂｒｕａｒｙ，１９９４）Ｐｅｉ－ＳｈａｎＣＨＥＮ（陈培善）（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｐｈｙｓｉｃｓ，ＳｔａｔｅＳｅｉｓｍｏｌｏｇｉｃａｌＢｕｒｅａｕ，Ｂｅｉｊｉｎｇ１...

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简介：(1)Dec.2-10,invitedbyCAFIU,ChiefEditorofthemagazineContinentofKazakhstanMr.SultanAkimbekovaccompaniedbyothertwopersonsvisitedChina.InBeijing,CAFIUadvisorandViceMinisterofInternationalDepartmentofCPCCentralCommittee(IDCPCCC)Mr.CaiWumetwithandentertainedtheguests.

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简介：TheFebruary12,2014,MS7.3,earthquakeinYutian,Xinjiang,China,occurredasaresultofshallowstrike-slipfaultinginthetectonicallycomplexregionofthenorthernTibetanPlateau,withadepthof17km.ThisearthquakeoccurredseveralhundredkilometersnorthoftheconvergentIndia-Eurasiaplateboundary.TheepicenterlocationoftheYutianearthquake,36.1°N,82.5°E,is110kmnorthofYutianCounty,HotanPrefecture.AlargenumberofaftershocksfromML2.0toML3.0occurreduntil12:00oclock,February23,2014andthelargestaftershock,MS5.7,occurredat17:24p.m.,February12,2014.ThebandhvalueofYutiansequenceare0.70and1.29,respectively.ThewaitingtimemethodrevealsthatthestrongaftershocksaboveML4.5complywithalinearrelationship,whichisconsistentwiththecharacteristicsofamainshock-aftershocksequence.Furthermore,wecalculatethesourceparametersandanalyzetheruptureprocessbasedontheempiricalrelationshipsfortheYutianearthquake,andtheresultsindicateafrictionalundershootbehaviorinthedynamicsourceprocessoftheYutianearthquake,whichisalsoinagreementwiththelowerandsimilarbvaluescomparedwiththe2008MS7.3Yutianearthquakeandthe2012MS6.2Yutianearthquake.

简介：ＢｏｄｙｗａｖｅｆｏｒｍｉｎｖｅｒｓｉｏｎｆｏｒｔｈｅｓｏｕｒｃｅｐｒｏｃｅｓｏｆｔｈｅＦｅｂｒｕａｒｙ３，１９９６Ｌｉｊｉａｎｇ，ＹｕｎｎａｎｅａｒｔｈｑｕａｋｅＹＡＮＧＸＵ１）（徐扬）ＭＡＳＡＹＵＫＩＫＩＫＵＣＨＩ２）（菊地正幸）ＹＯＵ－ＪＩＮ...

简介：ThedistributionalfeaturesoftemperatureandsalinityinthenorthernTaiwanStraitshavebeenanalyzedbasedontheCTDdataduringFebruary-March,1998.Thecharacteristicsoftemperatureandsalinityaresummarizedasfollows:(1)thereexistsacoastalwateralongthewesterncoastoftheTaiwanStraits,withlowtemperatureandlowsalinityattheupperlayer;(2)ahightemperatureandhighsalinitywatertongueextendsnortheastwardalongtheeasterncoastoftheTaiwanStrait.

简介：TheYutianearthquakewithM_S7.3happenedonFebruary12,2014.Theprecursormonitoringabilityisweakinthatarea.Wefoundtendencyanomaliesandmiddle-andshort-termanomaliesfrommetalpendulumtiltmeasurementsinHotanseismicstationbeforetheearthquake.AndwealsocomparedtheanomalieswiththatoftheM_S7.3YutianearthquakeonMarch21,2008.Thetendencyanomaliesmeasuredbythemetalpendulumtiltmeterappearedsince2012astiltingeastward.Whilethemiddle-andshort-termanomalieswerecharacterizedbyacceleration,pauseandrapidchangeoftiltrateintwodirections.Thetendencyanomaliesofmetalpendulumtiltrecordsarethesamebeforethetwoearthquakes.Theybothhappenedintheeastdirection.However,therearedifferencesinduration,characteristicandearthquakeintervalsforthemiddle-andshort-termanomalies.

简介：ThepaperinvertsthefocalmechanismsolutionsoftheYutianM_S7.3mainshock,foreshocksandM_S≥3.5aftershocksbyusingtheCAPmethod,basedonthebroadbandwaveformsrecordedbytheXinjiangandTibetDigitalSeismicNetworks.TheresultsshowthattheM_S7.3strongearthquakeisofstrike-sliptypewithanormalfaultingcomponent,andcombinedwiththeanalysisoffocalstructureandtheaftershockdistribution,thenodalplaneIwithstrike241°,dip90°andrake-22°isconsideredtobetheseismogenicfaultplaneofthemainshock.ThedirectionofP-axisforthemainshockis194°,closetothenearNSdirectionoftheprincipalstressP-axisofhistoricalstrongearthquakesinthisregion.ThefocalmechanismsolutionoftheM_S5.4foreshockhasagoodconsistencywiththatofthemainshock.Amongthe18aftershocks,10areofstrike-sliptype,6areofnormalfaultingtypeand2areofthrusttype.70%oftheaftershocksinthesequencehaveafocalmechanismwithP-axisinthenear-NSdirection.ThefocaldepthsofthisM_S7.3earthquakesequencesaredistributedintherangeof5km-28km,withthemajorityinthedepthrangeof15km-20km,slightlydeeperthanthedepthof10kmofthemainshockascalculated.