简介：ＳｏｍｅＧｅｏｃｈｅｍｉｃａｌＣｈａｒａｃｔｅｒｓｏｆＫｉｍｂｅｒｌｉｔｅｓｉｎＥａｓｔｅｒｎＮｏｒｔｈＣｈｉｎａＰｌａｔｆｏｒｍａｎｄＨｅｔｅｒｏｇｅｎｅｉｔｙｏｆＴｈｅｉｒＳｏｕｒｃｅｓＺｈｅｎｇＪｉａｎｐｉｎｇ；ＬｕＦｅｎｇｘｉａｎｇ；Ｗａｎｇ...

简介：在在灰尘天气的半球和它的可能的角色的低频率摆动在2002在诺思中国上袭击事件作为案例研究被分析。结果证明阿留申群岛之土人Low在3060天的摆动上在南半球与环极涡旋被连接，与趋于加深可能对尘暴事件的产生有用的阿留申群岛之土人Low的弱环极涡旋。在这后面的可能的机制是吝啬的经向环流的内部半球的相互作用，与在东亚上的主要可变性。在在上面的水平对流层的南半球的高纬度的带的吝啬的偏午可以带北半球的，它然后在北半球影响地方性环流。因此，低频率摆动电视连接是在在诺思中国上在南半球发行量和灰尘事件之间联合的一个可能的连接。然而，内部低频率摆动的年变化是不清楚的。

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简介：Thetriangulationofredspriteswasobtained,basedonconcurrentobservationsoveramesoscaleconvectivesystem(MCS)inNorthChinafromtwostationsseparatedbyabout450km.Inaddition,broadbandsfericsfromthesprite-producinglightningweremeasuredatfivegroundstations,makingitpossibletolocateandidentifytheindividualcausativelightningdischargesfordifferentelementsinthisdancingspriteevent.TheresultsofouranalysesindicatethatthespriteswereproducedabovethetrailingstratiformregionoftheMCS,andtheirparentstrokeswerelocatedmainlyintheperipheralareaofthestratiform.Thelateraloffsetbetweenspritesandcausativestrokesrangesfromafewkmtomorethan50km.Inaparticularlybrightsprite,withadistincthalofeatureandstreamersdescendingdowntoanaltitudeofapproximately48km,thespritecurrentsignalidentifiedintheelectricsferic,measuredatarangeofabout1,110km,peakedatapproximately1msafterthereturnstroke.

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简介：历史的地震活动在北方中国区域是强烈的。然而，自从Ms6.2地震，没有中号的地震在Zhangbei区域在这个区域发生在最后十年在1998。中等、强烈的地震的静止在诺思中国是相当突出的。在这篇论文，我们在1970~使用小地震记录2009学习背景在北方中国区域的地震活动。地震参数的空间分布被介绍，包括b值，最大的大小和M/6的地震的年度出现概率。0。我们有低b值的结果表演区域在太行山块在山西裂缝，位于Tancheng-Lujiang差错地区的Suqian区域和Shijiazhuang区域包括Yuncheng区域。我们seismicity的合成空间模式上的分析显示在北方中国区域的seismicity被深结构的地区性的动态因素主要影响。

简介：在Changjiang河口的北方经过隧道的背淤泥力量的时间、空间的变化是调查u-sing实验直角的函数(文件结束)方法，与目的到决定强加的进程和时间规模。自从2000年3月，在隧道的每个挖出的单位的back-siltingquantity上的数据被收集了，主要一次15d。背淤泥力量的文件结束分析揭示二个重要模式，它完全解释58。第一个文件结束模式显示出的33%全面变化，和相应过程和time-scales.The是的一个清楚的年度周期由河流的水和输沙量决定了从在上游。第二个文件结束模式揭示在back-siltingstrength和工程活动之间的一种靠近的关系。因为这些过程极大地在这个学习案例中被互连，为41的另外的文件结束模式财务。67%全部的变化不显示出清楚的过程andtime规模。

简介：Thechangeoftheconfinedaquiferlevelreflectstheporepressurechange,andtheporepressurechangeoftheaquiferiscloselyrelatedtotheaquiferpressure.ThispaperusesthetidalresponseofthewellwaterleveldataintheNorthChinaregiontocalculatethetidalfactorofeachwellandextracttheeffectivewatertrendinformation.Then,thevolumetricstrainofanexistingconfinedaquiferwellintheNorthChinaregionisinverted,andthecontourmapsareplottedonahalf-yearscalefrom2009to2012.ResultsshowthatitcanreflectthestateofstressandstrainindeepcrusttoacertainextentintheNorthChinaregion.

简介：Inthisstudy,weadoptanimprovedBayesianapproachbasedonfree-knotB-splinebasestostudythespatialandtemporaldistributionoftheb-value.SynthetictestsshowthattheimprovedBayesianapproachhasasuperiorperformancecomparedtotheBayesianapproachaswellasthewidelyusedmaximumlikelihoodestimation(MLE)methodinfittingtherealvariationofb-values.WethenapplytheimprovedBayesianapproachtoNorthChinaandfindthattheb-valuehasaclearrelevancetoseismicity.Temporalchangesofb-valuesarealsoinvestigatedintwospecificareasofNorthChina.Weinterpretsharpdecreasesintheb-valuesasusefulmessagesinearthquakehazardanalysis.

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简介：有M≥的五地震的构造特征和研究问题7.0在论文在在最后300年的北方中国平原上被探讨包括在1966Xingtai地震没有扎根的破裂的认知，这个问题由Tangshan地震的地震差错和1830Cixian地震的theseismotectonic环境的讨论的戳活动引起了。作者认为为在在这个区域的强震tectonics的研究的问题的主要原因是主要tectonics的活动的地位在期间晚第四级是未知的。这影响为强震在诺思中国平原的地震构造学成立辨别标准。从差错的大数字区别全新统活断层是为在在未来的区域的地震危险评价的最有效的方法。

简介：Theverticaldeformationgradientcanreflecttherateofverticalchangeinunitdistance,andtheverticaldeformationvelocitygradientcanreflectthestrengthoftheearth'scrusttectonicactivities.Inthispaper,usinglongperiodlevelingdatacombinedwithGPSdata,theverticaldeformationgradientvaluesarecalculated.LevelingdataandGPSdataaretwodifferentmeansofmonitoringdeformation,buttheresultisapproximatelythesameverticaldeformationgradient.Theresultsshowthatthespatialdistributionoftheverticaldeformationvelocitygradientandtectonicdistributionhasanobviouscorrelation.ThemostsignificantgradientanomaliesalongtheNorth-SouthSeismicBeltareXianshuihefault,LongmenshanfaultandXiaojiang-Zemuhefault,whilethesecondgradientanomaliesinthenortheasternQinghai-TibetanplateauareZhuanglanghefaultandLenglonglingfault.TheMenyuanM_S6.4earthquakein2016occurredinthisabnormalarea.However,accordingtotheverticaldeformationhighgradientareadistribution,thereisalsothepossibilityofanearthquakeoccurrenceintheTianzhuandJingtaiarea.TheareaofconvergenceofthreemajorfaultzonesisthestrongesttectonicallyactiveregionoftheNorth-SouthSeismicBelt.

简介：TheearthresistivityandgeomagneticobservationdataoftheZcomponentfrommanystationsinnear-epicentralareasofstrongearthquakesarecombinedandcalculatedbyusingaspatiallinearitymethodandanewcharacteristicvalue,thespatiallinearitya,describingtheprecursoryfieldinnear-epicentralareaofstrongearthquake,isobtained.Theanalysisandcalculationresultsofgeoelectricandgeomagneticobservationdatapriorto8earthquakeswithM≥5.5occurringintheNorthChinaregionshowthatavalueneartheepicentralareatendstodecreasesignificantlyhalfayearbeforestrongearthquakes.

简介：Basedonthestatisticsofsurfacedrifterdataof1979–2011andthesimulationofnuclearpollutantparticulatemovementssimulatedusinghighqualityoceanreanalysissurfacecurrentdataset,thetransportpathwaysandimpactstrengthofFukushimanuclearpollutantsintheNorthPacifichavebeenestimated.Theparticulatesareusedtoincreasethesamplingsizeandenhancetherepresentativenessofstatisticalresults.Thetrajectoriesofthedriftersandparticulatesarefirstexaminedtoidentifytypicaldriftingpathways.Theresultsshowthattherearethreetypesoftransportpathsfornuclearpollutantsatthesurface:1)mostpollutantparticlesmoveeastwardandarecarriedbytheKuroshioandKuroshio-extensioncurrentsandreachtheeastsideoftheNorthPacificafterabout3.2–3.9years;2)someparticlestravelwiththesubtropicalcirculationbranchandreachtheeastcoastofChinaafterabout1.6yearsaccordingtoonedriftertrajectoryandabout3.6yearsaccordingtoparticulatetrajectories;3)alittleofthemtravelwithlocal,smallscalecirculationsandreachtheeastcoastofChinaafterabout1.3–1.8years.Basedontheparticulates,theimpactstrengthofnuclearpollutantsatthesetimescalescanbeestimatedaccordingtothetemporalvariationsofrelativeconcentrationcombinedwiththeradioactivedecayrate.Forexample,Cesium-137,carriedbythestrongNorthPacificcurrent,mainlyaccumulatesintheeasternNorthPacificanditsimpactstrengthis4%oftheinitiallevelattheoriginatingFukushimaareaafter4years.Duetolocaleddies,Cesium-137inthewesternNorthPacificis1%oftheinitialpollutantlevelafter1.5yearsandcontinuouslyincreasesto3%after4years.Theverticalmovementofradioactivepollutantsisnottakenintoaccountinthepresentstudy,andtheestimationaccuracywouldbeimprovedbyconsideringthree-dimensionalflows.

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简介：Thispaperanalyzesthecharacteristicsofsupertyphoons(STYs)overthewesternNorthPacific(WNP)from1965to2005anddescribestheseasonalvariabilityofSTYactivity.TherelationbetweenSTYactivityandtheElNio-SouthernOscillation(ENSO)aswellasthepossiblereasonfortheinfluenceoftheENSOonSTYactivityarealsoinvestigated.Theresultsshowedthataboutonefifthofthetropicalcyclones(TCs)overtheWNPcouldreachtherankofSTY.MostSTYsappearedfromJulytoNovem-berwhiletherewasahighestratiobetweennumberofSTYsandtotalnumberofTCsinNovember.MostSTYsappearedeastofthePhilippineSea.InElNioyears,affectedbyseasurfacetemperature(SST),monsoontroughandweakverticalwindshear,TCfor-mationlocationsshiftedeastwardandthereweremoreSTYsthaninLaNiayearswhentheaffectingfactorschanged.

简介：由在20052007的春天和秋天期间从30架班机在诺思中国上分析在空中的观察，在在诺思中国的各种各样的地点的0.3%过度饱和的喷雾器和云冷凝作用原子核(CCN)的垂直分布的特征被调查。测量采样在象平原，高原，和海那样的不同表面上被进行。结果证明累积模式喷雾器的数字集中比在春天在秋天是更大的，但是颠倒为CCN是真的。这意味着有比100nm小的直径的更多的喷雾器能在春天作为CCN被激活，并且这能导致更高的喷雾器激活效率。在Taihang山附近的平原上的喷雾器激活效率比在秋天在春天是更大的，并且它比在土地上在海上是更大的。在在Bashang高原上的边界层上面的喷雾器激活效率是很低的。基于一阵喷雾器和CCN的否定指数的垂直分布，象在诺思中国上的喷雾器激活效率一样的喷雾器和CCN的一个空间parameterization模型被建议。因为它被喷雾器和周围的大气的条件的地区性的物理、化学的特征主要影响，结果证明喷雾器激活效率不清楚地依赖于高度。吝啬的喷雾器激活效率分别地是0.66，与在春天和秋天的0.70和0.53的价值。

简介：Thisstudyfocusesonthehydrochemicalcharacteristicsof47watersamplescollectedfromthermalandcoldspringsthatemergefromtheHammamRighageothermal?eld,locatedinnorth-centralAlgeria.TheaquiferthatfeedsthesespringsismainlysituatedinthedeeplyfracturedJurassiclimestoneanddolomiteoftheZaccarMount.Measureddischargetemperaturesofthecoldwatersrangefrom16.0to26.5°Candthehotwatersfrom32.1to68.2°C.Allwatersexhibitedanear-neutralpHof6.0–7.6.Thethermalwatershadahightotaldissolvedsolids（TDS）contentofupto2527mg/l,whiletheTDSforcoldwaterswas659.0–852.0mg/l.Chemicalanalysessuggestthattwomaintypesofwaterexist:hotwatersintheup?owareaoftheCa–Na–SO4type（HammamRigha）andcoldwatersintherechargezoneoftheCa–Na–HCO3type（ZaccarMount）.Reservoirtemperatureswereestimatedusingsilicageothermometersand?uid/mineralequilibriaat78,92,and95°CforHR4,HR2,andHR1,respectively.Stableisotopicanalysesoftheδ18OandδDcompositionofthewaterssuggestthatthethermalwatersofHammamRighaareofmeteoricorigin.Weconcludethatmeteoricrechargein?ltratesthroughthefractureddolomiticlimestonesoftheZaccarMountandisconductivelyheatedatadepthof2.1–2.2km.ThehotwaterstheninteractatdepthwithTriassicevaporiteslocatedinthehydrothermalconduit（fault）,givingrisetotheCa–Na–SO4watertype.Astheyascendtothesurface,thethermalwatersmixwithshallowerMg-richgroundwater,resultinginwatersthatplotintheimmaturewater?eldintheNa–K–Mgdiagram.Themixingtrendbetweencoldgroundwatersfromtherechargezonearea（ZaccarMount）andhotwatersintheup?owarea（HammamRigha）isapparentviaachloride-enthalpydiagramthatshowsamixingratioof22.6\R\29.2%.WesummarizetheseresultswithageothermalconceptualmodeloftheHammamRighageothermal?eld.