简介：Tworocksampleswithdifferentstructuresandmaterialsweredeformedunderabiaxialloadingsystem,andmulti-pointstrainmeasurementswereperformedforeachsample.ThedistributionofstrainanomaliesduringthedeformationandtheinstabilityprocesswereanalyzedbyusingCvvalueputforwardbyWANGXiao-qingandCHENXue-zhong,etal,aparametertodescribetheheterogeneousdistributionofearthquakeprecursors,soastoexaminethemethodofCvvalueandtoexploreitsphysicalmeaningexperimentally.TheresultshowsthatthechangeofCvvalueiscorrelatedtothechangeofdeformationcharacteristicsandisaneffectiveparametertodescribetheheterogeneityofprecursordistribution.Cvvalueincreasesfirstlyandthendecreasesbeforetheinstability,andtheinstabilityoccurswhenCvvaluedecreasestothelevelbeforeincreasing.ThisindicatesthatCvvaluemaybeausefulparameterforearthquakeprediction.

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简介：Linnan潜水艇下垂是Linpan油地区的主要的油制片人。基于油组作文，煤气的层析数据和简历标记分析，从不同油矿的原油在组作文极大地变化了并且在先锋类型，原油成熟和烃depositional的方面显示出明显的异质，这被显示。根据源岩的特征，三张油人口能被区分，即，南部、北、过渡的油人口。根据水库以后的重做的过程，而且，媒介在成熟，六个油家庭和12个亚科产生烃的环境和差别调节是distinquished。综合研究建议在原油作文导致如此的异质的因素主要包括不同源岩，多级式在油/气体移植，水库异质和各种各样的水库以后的第二等的改变期间油/气体收费、geo色析法的效果。

简介：Heterogeneityofpermeabilityinfracturedmediaisahotresearchtopicinhydrogeology.Numerousapproacheshavebeenproposedtocharacterizeheterogeneityinthelastseveraldecades.However,littleattentionhasbeenpaidtocorrelatepermeabilityheterogeneitywithgeologicalinformation.Inthepresentstudy,severalcausesofpermeabilityheterogeneity,thatis,lithology,tectonism,anddepth,areidentified.Theunitabsorptionvalues(denotedasω),whichareresultsobtainedfromthepackertest,areemployedtorepresentpermeability.Thevariabilityofpermeabilityinsandstone-mudstoneissosignificantthatthevalueofunitabsorptionsspan3-4ordersofmagnitudeatanydepthwithseveraltestsections.Bydeclustering,ithasbeenfoundthatunderasimilartectonichistory,themeansofpermeabilitydiffergreatlyatdifferentformationsasaresultofdifferentmudrockcontents.Ithasalsobeenfoundthatinthesameformation,permeabilitycanbesignificantlyincreasedasaresultoffaulting.Thewell-knownphenomenon,thedecreaseinpermeabilitywithdepth,isfoundtobecausedbythefracturesintherockmass,andtherelationshipbetweenpermeabilityanddepthcanbeestablishedintheformoflogω-logd.Aftersubtractingthetrendofωwithabsolutedepth,themeanoftheresidualvalueateachrelativedepthcanbewellcorrelatedwiththedistributionofmudstone.Themethodsproposedinthispapercanbeutilizedtoresearchinsimilarstudyareas.

简介：EarthquakeeventsfromtheIndonesiansubductionzonerecordedinnorthernAustraliashowalongandhigh-frequencycodaassociatedwithbothPandSwaves.RegionaleventsrecordedbyWarramungaarrayinnorthernAustraliacanseparateoutwavepropagationthroughthemantlebyfocusingonthecoherentsignalacrossthemedium-aperturearray.Mostoftheincoherentwavecomponentsresultfromstructuresinthevicinityofthearraywithsmall-scalelengthsof1–2kmorsmaller.Thecoherentphaseswithrelativelyrapidchangesinwaveformsareassociatedwiththescatteringofseismicwavesbycrustalandmantleheterogeneity,butinsomecasecanberelatedtostructuraleffectsnearthesource.Asthedepthofthesourceincreases,thecoherentportionoftheseismicwavefieldtendstobecomemuchsimpler,whichsuggeststhattheheterogeneitytendstoweakenatdepthwithlarger-scalelength.WecomparethecoherentsignalfeaturesofearthquakesfromtheIndonesiansubductionzonethathaveoccurredinrecentyearswiththoseintheearly1980s,firststudiedbyKennett(PhysEarthPlanetInter47:319–332,1987).Thegeneralcharacteristicsofthecoherentsignalvariationwithdepthinrecentyearsarethesameasthoseobservedin1980s,butthevariationsarelarger.Thischangesuggestsastringervariationinheterogeneitywithdepththanbefore,whichmaybearimportantinformationaboutthedynamicprocessesandevolutionofthecrustanduppermantle.

简介：ResearchonthelargescalespatialheterogeneityofgreatintraplateshallowearthquakesontheChinesemainlandandadjacentareasdiscussedinthispapershowsthat(1)therearefourmainhighseismicityareas:theNorthChinaseismicareaintheeasternpartofChina(30°-42°N),theSoutheasternCoastseismicareaintheeasternpartofChina(19°-25°N),theNorth-SouthseismicareainthewesternpartofChinaanditsadjacentareas(Burma-China-Mongolia),andtheCentralAsianseismicareainthewesternpartofChinaanditsadjacentareas(Pamir-TianshanMountains-Baikal);(2)thefourintraplateseismicareasthatareapproximatelyperpendiculartothosesectionsoftheEurasiaplateboundarythatsurroundstheChinesemainlandanditsadjacentareas,wheretheEurasiaplatehasastrongseismiccouplingwiththeNorthAmerica-PacificOcean-PhilippineSeaplateandtheIndiaplate;and(3)thelargescalespatialheterogeneityofintraplateseismicityinChinaanditsadjacentareasthatmightbecontrol