学科分类
/ 4
67 个结果
  • 简介:Stressrelaxationandattenuationoffluid-saturatedsandstoneatlowfrequencyDao-YingXI(席道瑛),Ai-WenLIU(刘爱文)andWeiLIU(刘卫)(Universityo...

  • 标签: SANDSTONE saturated FLUID ATTENUATION
  • 简介:硅酸盐perovskites((Mg,Fe)SiO3和CaSiO3)被相信是在更低的披风的主要成分矿物质。阶段关系,稳固的答案,铁的旋转状态和与更低的披风perovskite有关的水溶解度具有地球的内部的地球动力学上并且在矿石矿化作用上的大效果。以前的研究显示大量铁结合了铝能合并到镁perovskite,但是这与disproportionation是不和的(Mg,Fe)SiO3perovskite进没有铁的MgSiO3perovskite和六角形的阶段(Mg0.6在地球的更低的披风的Fe0.4)SiO3。MnSiO3是证实强烈在MnSiO3愿望的更低的披风,和增加以磅条件与MgSiO3perovskite与CaSiO3perovskite和完全的稳固的答案形成宽范围固体答案的第一个化学部件影响在MgSiO3和CaSiO3之间的相互的溶解度。铁的旋转状态是深深地取决于Fe3+或Fe2+,的地点职业合成和样品的退火的条件。然而,看起来,在更低的披风perovskite的Fe2+的旋转状态能作为高纺纱被解决中间的纺纱的存在或在perovskite的Fe2+的低旋转状态没被澄清。而且,不同结果也在perovskite为Fe3+的旋转状态被报导了。更低的披风perovskite的水溶解度与它的作文被联系。在纯MgSiO3perovskite,不到500仅仅ppm水被报导。在更低的披风的Al-MgSiO3perovskite或Al-Fe-MgSiO3perovskite提供1100~1800ppm的水。进一步的实验是必要的为perovskite固体答案澄清详细条件,并且为深深地理解地球的内部和矿石矿化作用的地球动力学在不同的层比较不同阶段的水溶解度,到可靠地在共存分析铁的原子价和旋转状态忍受铁的阶段。

  • 标签: 钙钛矿 下地幔 水溶性 固溶体 亚铁 旋转
  • 简介:有流动上的不同安排密度的纵的酒吧介绍的不同沉没障碍和一个scour洞的形态学的效果在清楚的水条件下面被调查。声学的Dopplervelocimetry(副词)数据被使用阴谋三维的速度和狂暴的轮廓的垂直分布。试验性的结果显示那安排密度(能也代表孔),结构的材料(灵活或稳固),并且sidewall效果是影响狂暴的动能和形态学的主要因素搜索洞。为灵活植被,床表面附近的最大的狂暴的动能与安排密度增加了。为一样的结构,深度和scour洞的侧面的扩大的大小也与安排密度增加了。因为偏转和安排密度,灵活植被减少了scour洞的深度。大量scour在结构在灵活植被比作很好那些的固体的在上游、中间的节发现了。多孔的灵活植被的偏转下游地搬运了狂暴的动能,在沉积床附近减少了狂暴的动能,并且增加了酒吧的稳定性。灵活植被酒吧能在正常条件下面保护河岸和一条河的床,使他们成为在河的管理和恢复的一个好其他的图案。

  • 标签: 河床冲刷 固体结构 植被 酒吧 淹没 多普勒测速仪
  • 简介:在这份报纸,我们以光线参数导出SS波浪思考系数和S波浪光线橡皮阻抗(SREI)的表示的近似。SREI能被S波浪发生角度或P波浪思考角度表示,分别地叫作SREIS和SREIP。我们用从真实木头大小导出的有弹性的模型的学习证明SREIP比SREIS和常规S波浪为岩性学和液体辨别有更好的能力橡皮阻抗(SEI)。我们从Castagna和史密斯(1994)用25组样品评估SREIP可行性。每个样品组被使用页岩构造,盐水沙,并且煤气沙。理论评估也显示全体的那SREIP事件角度比常规液体指示物对液体更敏感。真实地震数据申请也显示出角度计算了高效地使用P波浪和S波浪阻抗罐头的全体的那SREIP描绘紧密煤气沙。

  • 标签: 流体识别 弹性阻抗 波射线 岩性 SMITH 弹性模型
  • 简介:ThederivationofGreenfunctioninatwo-layerfluidmodelhasbeentreatedindifferentways.Inatwo-layerfluidwiththeupperlayerhavingafreesurface,thereexisttwomodesofwavespropagatingduetothefreesurfaceandtheinterface.ThispaperisconcernedwiththederivationofGreenfunctionsinthethreedimensionalcaseofastationarysourceoscillating.Thesourcepointislocatedeitherintheupperorlowerpartofatwo-layerfluidoffinitedepth.Thederivationiscarriedoutbythemethodofsingularities.Thismethodhasanadvantageinthatitinvolvesrepresentingthepotentialasasumofsingularitiesormultipolesplacedwithinanystructuresbeingpresent.Furthermore,experienceshowsthatthesystemsofequationsresultedfromusingasingularitymethodpossessexcellentconvergencecharacteristicsandonlyafewequationsareneededtoobtainaccuratenumericalresults.Validationisdonebyshowingthatthederivedtwo-layerGreenfunctioncanbereducedtothatofasinglelayeroffinitedepthorthattheupperGreenfunctioncoincideswiththatofthelower,foreachcase.Theeffectofthedensityontheinternalwavesisdemonstrated.Also,itisshownhowthesurfaceandinternalwaveamplitudesarecomparedforboththewavemodes.Thefluidinthiscaseisconsideredtobeinviscidandincompressibleandtheflowisirrotational.

  • 标签: 流体脉动 GREEN函数 格林函数 两层流体 不可压缩流动 自由表面
  • 简介:Goldenrichmentmechanismofore-formingfluidistheessenceofgoldmetallization.Thispapersummarizesthedistinguishingsymbolsofmantlefluidandeffectofcrust-mantlestructureonfluidmovement.Fluidmovingprocessesincludeosmosis,surge,gas-liquidalterna-tionandmutationoffluidspeed.Duringfluidmovement,goldwillbeenrichedgradually.Final-ly,alayeredcirculatorysystemisillustratedinthispaper.

  • 标签: 地壳-地层相互作用 金矿床 聚集运动 富集机制 储集层流动系统
  • 简介:Unsteadymotionofaverticallyfallingnon-sphericalparticlehasattractedconsiderableattentionduetoitsfrequentapplicationsinnatureandindustry.Aseriesofsemi-analyticalmethodshavebeenusedtoraisetheresults’accuracyaswellaswideningtheregionofconvergence.Thecurrentstudypursuedanewanalyticalsolutionfortheunsteadymotionofarigidnon-sphericalparticleinaquiescentNewtonianfluid,basedontheOptimalHomotopyAnalysisMethod.Withaviewtowardsobtainingthehighestlevelofaccuracyandensuringtheconvergenceoftheanalyticalresults,theaveragedresidualerrorswereobtainedandminimized.Inadditiontoflexibility,itwasalsoproventhattheproposedmethodcanleadtocompletelyreliableandpreciselyaccurateresults.Basedontheseriessolution,theeffectsofphysicalparametersontheterminalsettlingvelocity(i.e.thegreatestvelocitythatafallingbodymayreach)andtheaccelerationtime(i.e.thetimethataparticlereachesthesettlingvelocity)areinvestigated.

  • 标签: 非球形颗粒 粘性流体 非定常运动 沉降速度 加速时间 牛顿流体
  • 简介:Two-DimensionalModelofHydraulicFracturinginGeosciences:Effects of Fluid BuoyancyYoshitoNakashima;MitsuhiroToriumi(GeologicalI...

  • 标签: BUOYANCY crack propagation DYKE HYDRAULIC FRACTURING
  • 简介:Basedonananalysisofthefractalstructuresandmasstransportmechanismoftypicalshear-fluid-oreformationsystem,thefractaldispersiontheoryofthefluidsystemwasusedinthedynamicstudyoftheoreformationsystem.Themodelofpoint-sourcediffusiveilluviationoftheshear-fluid-oreformationsystemwasconstructed,andthenumericalsimulationofdynamicsoftheoreformationsystemwasfinished.Theresultshowsthat:(1)Themetallogenicsystemhavenestedfractalstructure.Differentfractaldimensionvaluesindifferentsystemsshowunbalanceandinhomogeneityofore-formingprocessesinthegeohistory.Itisanimportantparametertosymbolizetheprocessofremobilizationandaccumulationofore-formingmaterials.Alsoitcanindicatethedynamicsofthemetallogenicsystemquantitativelytosomeextent.(2)Inessence,thefractaldispersiveore-formingdynamicsisacombinationofmulti-processesdominatedbyfluiddynamicsandsupplementedbymoleculedispersioninfluidsandfluid-rockinteraction.Itchangescomponentsandphysico-chemicalpropertiesofprimaryrocksandfluids,favouringdepositionandmineralizationofore-formingmaterials.(3)Goldore-formingprocessesindifferenttypesofshearzonesarequitedifferent.(1)Inametallogenicsystemwithinhomogeneousvolumetricchangeandinhomogeneousshear,mineralizationoccursinstructuralbarriersinthecentreofashearzoneandingeochemicalbarriersintheshearzonenearitsboundaries.Butthereislittlepossibilityofmineralizationoutoftheshearzone.(2)Astoametallogenicsystemwithinhomogeneousvolumetricchangeandsimpleshear,mineralizationmayoccuronlyinstructuralbarriersnearthecentreoftheshearzone.(3)Inametallogenicsystemwithhomogeneousvolumetricchangeandinhomogeneousshear,mineralizationmayoccuringeochemicalbarriersbothwithinandoutoftheshearzone.

  • 标签:
  • 简介:Fluidinclusionstudiesof5golddepositsconnectedwithalkalinerocksshowthatquartzseparatedfromauriferousquartzveinscontainsabundantthree-phaseCO2-NaCl-H2Oinclusionsandtwo-phaseCO2-dominatedones,measuring5-20umindiameter,Homogenizationtemperaturesofthefluidinclusionsaremostlywithintherangeof150-300℃,andthesalinities,mainly0.2wt%-12wt%(NaCl),Goldmineralizationsoccurredatdepthsof1.4-2.8km,Themoststrikingcharacteroffluidcompositionisthatamongthecations,Na^+indominant,followedbyK^+,Ca^2+,amongtheanions,Cl^-isslightlyhigherthanSO4^2-,Intheevaporate,H2Oisdominant,followedbyCO2,ThepHvaluesaremainlywithintherangeof6.5-8.5,indicatingthattheore-formingsolutionsarealkalineinnature.Thehydrogenandoxygenisotopicratiosindicatethattheorefluidiscomposedmainlyofmagmaticwater.Withthedroppingoftemperatureintheorefluid,thecontentsofCO2decreasedwhilethesalinityincreased.TherelationsbetweenAuandothercomponentsoftheorefluidarediscussedinthepaper,anditisconcludedthatinthesedeposits,Chlorides,H2S,SiO2,CO2,etc.inthefluidallareinvolvedinthemigrationandconcentrationofAu.

  • 标签: 金矿床 碱性岩 地球化学 流体包裹体 成矿作用
  • 简介:ExperimentshavebeenperformedonthesystemMgO-SiO2-Cr-Oat0-2.88GPaand1100-1450℃,focusingonthestabilityofCr^2+inolivine(O1),orthopyroxene(Opx)andspinel(Sp)anditspartitioningbetweenthesephases.Analyticalreagentgradechemicals,MgO,SiO2,Cr2O3.andCrwereusedtomakestartingmixtures.ExcessCr(50%)wasthenaddedinthesemixturestoensurethattheresultantphaseswereinequilibriumwiththemetalCr.FluxofBaO+B2O3(%)wasaddedforfacilitatingexperimentalequilibriumandcrystalgrowth.Crwasusedascapsulematerial.AllphasesintheproductwereidentifiedbyX-rayandanalyzedbyelectronmicroprobe,ThecontentsofCrOinthedifferentphases(O1,OpxandSp)werecalculatedaccordingtostoichiometry.TheobtainedresultsofcalculationindicatethatCr^3+inOlandOpxisnegligible.Theexperimentalresultsshow;(a)withincreasingtemperatureanddecreasingpressure,Cr^2+solubilityinOl,OpxandSpincreases;(b)withincreasingtemperature,thepartitioningcoefficientofMgandCr^2+betweenOlandOpxdecreases,thatbetweenOpxandSpincreases,andthatbetweenOlandSpremainsalmostunchanged;(c)theeffectofpressureonallpartitioningcoefficientsisnegligible.

  • 标签: 铬离子 可溶性 橄榄石 尖晶石 化学反应
  • 简介:Asloshingmitigationconcepttakingadvantageoffloatinglayersofsolidfoamelementsisproposedinthepresentstudy.Physicalexperimentsarecarriedoutinaliquidtanktoinvestigatethehydrodynamicmechanismofthisconcept.Effectsofthefoam-layerthickness,excitationamplitude,andexcitationfrequencyonthesloshingpropertiesareanalyzedindetail.Itisfoundthatthefloatinglayersofsolidfoamelementsdonotevidentlyaffectthefundamentalnaturalsloshingfrequencyoftheliquidtankevidentlyamongtheconsideredcases.Attheresonantcondition,themaximumwaveheightanddynamicpressurearegreatlyreducedasthefoam-layerthicknessincreases.Higher-orderpressurecomponentsonthetanksidegraduallyvanishwiththeincreaseofthefoam-layerthickness.Caseswithdifferentexcitationamplitudesarealsoanalyzed.Thephenomenonisobservedwhenthewavebreakinginthetankcanbesuppressedbysolidfoamelements.

  • 标签: anti-sloshing SLOSHING FLOATING foam potential flow
  • 简介:基于性质,构造和Huatugou油的反常压力系统的分发在Qaidam回答的核心样品,很好严峻的数据,和水库液体的全面学习盆被讨论。在压力系统和烃累积之间的关联被分析相应液体特征探讨。结果证明整个的Huatugou油领域有低形成压力和低液体精力;因此,烃是难的移居,它便于形成主要水库。学习水库,在Xiayoushashan形成定位了(N21)和Shangganchaigou形成(N1)是相对浅的并且有中等的孔和低渗透。他们分别地是有0.61和0.72的一个平均形成压力系数的反常低压的水库。根据压力系数和地热的异例,N1和N21形成属于二个独立温度压力系统,和前者有稍微更高的精力。低压的分隔空间作为主要身体由远侧的工具条组成,专业版三角洲泥作为最高的边界,和岸和浅湖泥或海藻的墩作为底部边界。他们垂直地被重叠并且水平地paralleled。形成水充满Cl−离子并且能与高咸度作为CaCl2类型被分类,它显示反常低压的分隔空间处于好封上的状况并且为油和煤气的累积和保藏有益。

  • 标签: 花土沟油田 柴达木盆地 流体系统 异常压力 答复 特征
  • 简介:Basedonanalysesofthespatio-temporalevolutionarycharacteristicsofteleseismicresponserecordedbyFu-jiansubsurfacefluidnetworkandincombinationwithearthquakeshappenedinFujianprovinceduringthesameperiod,thispaperpointsoutthatthestep-likerisingofwaterlevelafterdistantearthquakesmayincludesomeregionalstressfieldinformation,andtheareawherewaterlevelstep-likerisescouldbethepositionthatthestressconcentratedonandwherethefutureearthquakeswouldoccur.Ifcombinedwithotherimpendingprecursors,thelocationoftheeventsmaybepredictedtoacertaindegree.

  • 标签: 地震预报 流体网络 福建省 同震效应 水位上升 区域应力场
  • 简介:Asthekeypointinsexhormoneanalysis,samplepre-treatmenttechnologyhasattractedscientists’attentionallovertheworld,andthedevelopmenttrendofsamplepreparationforwardedtofasterandmoreefficienttechnologies.Takingeconomicandenvironmentalconcernsintoaccount,subcriticalfluidextractionasafasterandmoreefficientmethodhasstoodoutasasamplepre-treatmenttechnology.Thisnewextractiontechnologycanovercometheshortcomingsofsupercriticalfluidandachievehigherextractionefficiencyatrelativelylowpressuresandtemperatures.Inthisexperiment,asimple,sensitiveandefficientmethodhasbeendevelopedforthedeterminationofdiethylstilbestrol(DES)infishtissueusingsubcritical1,1,1,2-tetrafluoroethane(R134a)extractionincombinationwithgaschromatography-massspectrometry(GC-MS).Afterextraction,freezing-lipidfiltrationwasutilizedtoremovefattyco-extract.FurtherpurificationstepswereperformedwithC18andNH2solidphaseextraction(SPE).Finally,theanalytewasderivedbyheptafluorobutyricanhydride(HFBA),followedbyGC-MSanalysis.Responsesurfacemethodology(RSM)wasemployedtooptimizingtheextractioncondition,andtheoptimizedwasasfollows:extractionpressure,4.3MPa;extractiontemperature,26℃;amountofco-solventvolume,4.7mL.Underthiscondition,ataspikedlevelof1,5,10μgkg-1,themeanrecoveryofDESwasmorethan90%withrelativestandarddeviations(RSDs)lessthan10%.Finally,thedevelopedmethodhasbeensuccessfullyusedtoanalyzingtherealsamples.

  • 标签: GC-MS测定 己烯雌酚 流体萃取 亚临界 鱼组织 气相色谱-质谱联用分析
  • 简介:TheDuolanasayigolddeposit,60kmNWofHabaheCountyinXinjiang,isamedi-um-largescalegolddepositcontrolledbythecoupledore-formingprocessesinvolvingbrittle-duc-tileshearing,albititeveins,andpost-stagemagmasolution.Fluidinclusionstudiesindicatethatthehomogenizationtemperaturesrangefrom160℃to315℃withthepeakvaluesof220-300℃.Mineralizationpressuresarefrom21.0MPato64.5MPa.OrefluidinclusionscontainCa2+,K+,Na+,Mg2+;HCO3-,SO242-,HS-,F-,Cl-andAu+(maximum:5.3×10-6),andthemineralizingfluidisaH2O-CO2system.Sulfur,hydrogen,oxygenandstrontiumisotop-iccompositions(δS=-2.46‰--7.02‰,δ18OH2O=1.65‰-12.4‰,δD=-132.2‰--51.8‰,(Sr/Sr)i=0.7043-0.7073)suggestthattheore-formingfluidisthemixtureofmagmaticwater,meteoricwater,metamorphicwaterandformationwatersealedinrocksandstrata.Itismainlymagmaticwaterintheearlystage,andmixingfluidofwater,meteoricwater,metamorphicwaterandformationwaterthatoccurredinrocksandstratainthemajormineraliza-tionstage.Theore-formingmaterialswerederivedfromtheuppermantleorlowercrust.

  • 标签: 流体包裹体 地质学 金矿床 新疆 地球化学特征 成矿作用
  • 简介:在为低温度、浅、高的冰点油水库折断处理期间,首要的问题是由注射冷液体克服uncompleted故障,折断液体的uncompletedcleanup和形成的冷损坏。避免那些问题,采用被建议一新包含了在这篇论文描述了的产生热的水力的断裂液体系统。第一,二种化学产生热的系统我们再学习,NH_4Cl-NaNO_2系统被选择。根据系统的反应特征,草酸酸被选择为反应的催化剂并且包含由阶段分离方法把乙醇纤维素和石蜡用作涂层材料。有折断液体的hydroxypropyl-guar的NH_4Cl-NaNO_2-encapsulated草酸酸的相容性也在论文被讨论。结果证明包含的水力的断裂液体包含了heat-generatingagents兔好稳定性和相容性。当断裂的液体包含2.0摩尔·L~时(-1)NH_4Cl-NaNO_2,0.93%每硫酸盐包含了草酸酸和0.08%铵,山峰温度罐头到达78.0℃和剩余液体的粘性是在4个小时以后的3.12mPa·s。

  • 标签: 水力压裂 流动性 压缩方式 兼容性 凝胶体 天然气
  • 简介:ThreelogarithmiclinearequationsbetweenDMeV/Land[mNaCl],andtherelationshipofDMeV/LversusF/ClorK/NamoleratioshavebeenestablishedbytheexperimentsofthepartitioningofPbandZnbetweengraniticsilicatemeltandaqueousfluid.Theseresultshavebeenusedtoquantitativelystudysomeessentialproblems,suchasthepossibilityanddegreeofPb-Znmineralizationinthesystemofgraniticmagmaandhydrothermalfluid,andtheinfluenceoftherelativecontentsofalkaliandvolatilesonthePb-Znmineralizationinthesamesystem.Somenewpointshavebeenputforwardinthispaper.

  • 标签: hydrothermal quantitatively SILICATE partitioning POSSIBILITY MAGMA
  • 简介:在在活动的沙沙丘上的狂暴的液体运动和沉积粒子运动之间的关系被在在USDA-ARS-National沉积实验室执行的实验室实验使用激光Doppler速度计和一个声学的反散射系统调查。当以活动沙丘bedforms的速度下游地翻译两台测量设备时,从粒子和at-a-point骚乱数据的声学的反散射的侧面被收集。产生数据集合被用来检验波动的反散射和液体速度信号基于标准差在超过了大小阀值的频率(复发频率)()本地速度和大小从推迟的粒子源于反散射的声学的信号。下游、垂直的速度复发频率的斜坡通常与增加举起显示了一逐渐地增加的复发时间。为声学的反散射数据的复发频率不与举起是强烈可变的。在在1大小阀值的沉积反散射和垂直速度的复发频率之间的最靠近的通讯被X/L在一个区域定义<0.4并且y<6厘米。下游的速度是最仔细与在在0.4点的一个小区域的反散射有关

  • 标签: 泥沙 实验室 沉积物 流动性 测量法