简介：R’。‘’L学校代码10425L卜可11S0401071L1，，，，，一，。。』中国石油大学硕士研究生学位论文华东申请工学硕士学位波动方程变网格步长有限差分数值模拟学科专业培养方向硕士生指导教师地球探测与信息技术地球物理探测方法与技术李胜军孙成禹副教授入学F__I期2004年9月论文完成日期2007年4月WAVEEQUATIONNUMERICALMODELINGONAMESHOFVARYINGSPACINGLISHENGDUNGEOPHYSICALPROSPECTINGANDINFORMATIONTECHNOLOGYDIRECTEDBYASSOPROFESSORSUNCHENGYUABSTRACTFINITEDIFFERENCEISONEOFTHEPOPULARMETHOFORSEISMICWAVEFIDDMODELING，SINCEITSRECORDMAYCONTAINABUNDANTINFORMATIONANDTHEALGORITHMISEASYTOBEREALIZEDTHETRADITIONALFINITEDIFFERENCEALGORITHMHASTHEPROBLEMOFINSTABILITYAND／ORNUMERICALDISPERSIONWHENDEAL吣WITHAMODELWITHLOWSPEEDSURFACEMEDIUMORLOW／HIGHSPEEDINTERLAYERTOGETSIMULATIONRESULTSWITH】1IGHERP陀CISIOLL，AMETHODOFDECREASINGGRIDSTEPSISADOPTEDUSUALLYBUTWHICHMAKESTHECOMPUTINGTIMELONGERANDCOMPUTERMEMORYBEWASTEDTOSOLVETHEABOVEPROBLEM，BASEDONTHEFOUNDATIONOFTHEPRECEDINGRELATEDRESEARCHAVARYINGGRIDALGORITHMINTHELONGITUDINALDIRECTIONISINTRODUCEDANDIMPROVEDINTHISPAPERWHICHISEASYTOBEREALIZEDWITHOUTWAVEFIELDINTERPOLATIONCANIMPROVECOMPUTATIONEFFICIENCYANDSAVEMEMORYRESOURCESEFFICIENTLYCOMPAREDWITHIMDITIONALONEFORVEIL刖NGTHEVALIDITYOFALGORITHM，SEVERALPRACTICALMODELSARETESTEDCOMPAREDWITHTHETRADITIONALFINITEDIFFERENCEALGORITHMFROMTHEASPECTOFSIMULATIONPRECISIONCOMPUTATIONEFFICIENCYANDMEMORYREQUIREMENT，THERESULTSIILD|CATCTHATTHENEWMETHODISMUCHBETTERTHANTHECONVENTIONALONEANDCANDECREASENUMERICALDISPERSIONEFFECTIVELYWHICHISREGARDEDASAN1II

简介：分类号UDC密级单位代码10094讶L￡解菡尤孥硕士学位论文HSPF水文模型机理及应用研究～一以河北太行山区绿化方案制订为例张哲指导教师蔓塞凰熬拯专业名称自筮地理堂研究方向盗近迁盆当互挂缝剩周申请学位级别亟二OO七年四月六日HSPF模型的内部主模块包括透水地段水文水质模拟模块PERLND、不透水地段水文水质模拟模块IMPLND以及地表水体模拟模块RCHRES，其中，其中PWATER水文子模块是透水地段水文水质模拟模块的运转基础，应用于水量计算和构成分析，是预报可渗透流域地段出口的河川径流总量的关键，也是本次研究所采用的核心子模块。HSPF模型外都组件主要包括BASINS系统、GENSEN和WDMUTIL，它们都是模型正常运转所不可或缺的模型外围组成部分。本研究还对模型内部运算机制、下渗及壤中流运算机制以及土壤柱假设等方面的模型机理进行了详细阐述。本文所选取的研究对象河北太行山区流域，是阻隔太平洋水汽的天然屏障，是山前平原地下水的重要涵养区，也是开垦和破坏较为严重、生态环境安全危机较为明显的地区。该区域既适合进行土地利用／覆被改变的流域水文循坏要素响应机制的研究，又有根据该研究制订区域绿化方案的实际需求。本文制订绿化方案时，首先以径流量为突破点，通过研究区土地利用／覆被、土壤、气象等时空数据，建立起河北太行山区降水径流模型，并加以验证。其次，在确定区域径流量模型成立后，分别实现了区域蒸发量、区域含沙量的模拟。第三，根据区域状况，设定综合情景，对河北太行山整体进行模拟，以确定和把握这些假设情景对水文要素改变的整体趋势。第四，将太行山区按照海拔分为亚高山地区、中山地区、低山地区以及丘陵岗坡和山前平原区，以便制订具有针对性的对策。第五，根据具体区域设定不同情境进行模拟。最后，对模拟结果进行综合分析，制订出切实可行的河北太行山区绿化方案。关键词水文模型HSPF模型子流域模拟

简介：河海大学硕士学位论文地震灾害及决策的灰色模型研究姓名童蕾申请学位级别硕士专业防灾减灾及防护工程指导教师宫必宁20050301ABSTRACTWITHTHEDEVELOPMENTOFSOCIETYANDECONOMY,EARTHQUAKEDISASTERSWILLBRINGMOREANDMORESEVERELOSSESFORHUMANBEINGS．THEREFORE，STUDIESONEARTHQUAKEDISASTERSANDDECISIONSHAVEVERYIMPORTANTTHEORYMEANINGANDSOCIALECONOMICALEFFECT．FIRSTLY,THEAFTERSHOCKPREDICTIONFORMAJORAFTERSHOCKSISSTUDIED．NATURALANALOGISMMETHOD，TIME‘SPACETRANSFERCOEFFICIENTMETHODANDJUDGEMENTBYTHEBVALUEOFEARTHQUAKESEQUENCEAREUSEDTODIVIDETHETYPESOFEARTHQUAKES．BASEDONTHEM，THEGRAYMODELINGMETHODSAREUSEDTOSIMULATETHEEARTHQUAKESEQUENCE，ANDTHEGM1，1MODELISESTABLISHEDTOPREDICTAFTERSHOCK．MOREOVER,POSTERIORVARRIANCETESTANDGREYRELATIONANALYSISALESTUDIED．THESEMETLIODSAREAPPLIEDTOSIMULATETHEEARTHQUAKESEQUENCEHAPPENEDATSUMTRA，INDONESIAINDEC．2004．SECONDLY,THEMETHODSTOASSESSTHEDISASTERLOSSESOFEARTHQUAKEARESTUDIED．THEDISASTERSOFEARTHQUAKEARECLASSIFIEDANDASSESSEDBYGREYCLUSTERMETHODANDGREYRELATIONANALYSIS，THEGREYRELATIONSHIPSBETWEENTHEDISASTERLOSSESOFEARTHQUAKEANDSEVERALFACTORSAREANALYZEDINORDERTOQUANTIFYTHEQUALITATIVEANALYSESOFECONOMICLOSSESUSINGSEISMOSOCIOLOGYANDEXPLAINTHEIMPACTOFURBANIZATIONANDHUMANBEINGSONTHEDISASTERLOSSESOFEARTHQUAKE．MEANTIME，THETOTALPROBABILITYMODELANDDYNAMICCORRECTMODELAREINTRODUCED．MANYEXAMPLESATCHINAREUSEDTOTESTTHESEMETHODSSINCETHEYNEEDDETAILEDANDCONCRETEDATA．FINALLY,AFTERCOMPLETINGEARTHQUAKEDISASTERSASSESSMENTANDDETERMININGTHESCALEOFAID，ANALYTICHIERARCHYPROCESSANDAREUSEDTOSTUDYTHEDISTRIBUTIONOFMATERIALSFORDISASTERRELIEFANDREBUILDINGPLANNING．MOREOVER,THESEMETHODSAREALSOAPPLIEDTOBAMEARTHQUAKEATIRANINDEC．2003．THERESULTSSHOWTHATTHEABOVEGREYMODELINGMETHODSAREVALUABLETOBERESEARCHEDANDPERFECTEDATTHEFIELDSOFAFTERSHOCKPREDICTION．ASSESSMENTFORTHCDISASTERLOSSESOFEARTHQUAKEANDDISASTERRELIEFDECISION，WHICHCANBEAPPLIEDONTHESCIENTIFICALDECISIONBYGOVERNMENT．KEYWORDSOREYMODEL，EARTHQUAKEDISASTER,ASSESSMENTOFEARTHQUAKEDISASTER,DECISIONONDISASTERRELIEF,MAINAFTERAHOCKTYPE，NATURALANALOGISMMETHOD，TIMESPACETRANSFERCOEFFICIENTMETHOD，GM1，1，GREYRELATIONANALYSIS，GREYCLUSTERMETHOD，TOTALPROBABILITYMODEL

简介：河海大学硕士学位论文塔里木河流域水文循环的大气过程研究姓名赵芬申请学位级别硕士专业水文学及水资源指导教师陆桂华20080301摘要主要的输出边界。关键词塔里木河流域大气过程；水汽含量；降水效率水汽输送；辐合辐散水汽收支11

简介：中国科学院寒区旱区环境与工程研究所硕士学位论文祁连山七一冰川气象水文分析姓名陈亮申请学位级别硕士专业自然地理学指导教师王宁练段克勤20070501陈亮中科院研究生院硕I学位论文祁连山七一冰川气象水文分析ABSTRACTOFTHESISTHESURFACEENERGYBALANCEOFAGLACIERDESCRIBESTHEPHYSICALCONNECTIONBETWEENICE／SNOWABLATIONANDCLIMATICFORCINGMODELLINGMELTANDRUNOFFFROMSNOWANDICECOVEREDCATCHMENTSISIMPORTANTFORWATERRESOURCEANDHAZARDMANAGEMENTANDFORTHESCIENTIFICSTUDYOFGLACIERHYDROLOGY，DYNAMICSANDHYDROCHEMISTRYWEANALYZEDMETEOROLOGICALDATAOFTHEPERIOD9JUNETO28SEPTEMBER，2006FROMANAUTOMATICWEATHERSTATIONONQIYIGLACIER，QILIANMOUNTAINS，TOSTUDYTHERELATIONSHIPBETWEENCLIMATEANDABLATIONTHEWEATHERSTATIONSISLOCATEDINTHEABLATIONAREAWHEREWEANALYZEDTHEENERGYBALANCEANDTHESPECIFICMASSBALANCEOVERTHISTIMEPERIOD，QIYIGLACIER’SABLATIONAREAWASCHARACTERIZEDBYANAVERAGETEMPERATUREOF11OCANDANAVERAGEWINDSPEEDOF24M／S，MEASUREDAT14MABOVETHESURFACETHECALCULATIONOFENERGYBALANCECOMPONENTSSHOWTHATNETRADIATIONANDTURBULENTHEATFLUXESAREMAJORELEMENTSOFTHEENERGYBALANCEDURINGTHEPERIOD，THEAVERAGENETRADIATION，SENSIBLEHEATFLUXANDLATENTHEATFLUXWERE655W／M2，14W／M2，AND102W／M2RESPECTIVELYBASEDONTHEMEASUREDHYDROLOGICALDATAFROM13JUNETO30SEPTEMBER2006，THECHARACTERISTICSOFMELTWATERRUNOFFDRAININGFROMQIYIGLACIERWEREANALYSISEDTHEDAILYCHANGEDCHARACTERISTICSOFTHEMELTWATERRUNOFFWASOBVIOUSLYANDTHEFLUCTUATEOFWATERLEVELINTHEINTENSIVEMELTINGSEASONWASMORETHANTHEOTHERTYPESOFGLACIER，MEANWHILE，THEMAXDISCHARGEWASNINETIMESTHANMINDISCHARGEINONEDAYTHEINTENSIVEMELTINGSEASONWASJUNEANDAUGUSTGLACIERABLATIONISRELATEDTOAIRTEMPERATUREANDTHECOEFFICIENTOFCORRELATIONBETWEENAVERAGEDISCHARGEANDTEMPERATUREIS084THEMOREBARENESSHILLSIDEINTHEHYDROLOGICALSECTIONANDTHELONGTIMEOFCONTINUOUSPRECIPITATION，THEMOREMELTWATERRUNOFFDEPENDENTONPRECIPITATIONTHEINFILTRATIONOFQIYIGLACIERWASHIGHLYANDTHEWASTAGEOFINFILTRATIONBETWEENTWOHYDROLOGICALSECTIONACCOUNTFOR1／3OFMELTWATERRUNOFFOFSIIISO，THEINFILTRATIONISANIMPORTANTFACTORINTHEANALYSISOFDISCHARGEANDQUANTIFYOFTHISCANIMPROVEACCURACYOFHYDROLOGICALOBSERVATIONSTHERUNOFFDEPTHWAS618MMANDTHERUNOFFMODULUSWAS6441LS。1KM。2FROMJUNETO

简介：西安理工大学博士学位论文基于空气、冰与水的电导率检测冰厚的理论与应用研究姓名秦建敏申请学位级别博士专业水文学及水资源指导教师沈冰20050401西安理工大学博士学位论文2电层（冰层）和良导电层（冰下自然水）的划分方法电层（冰层）和良导电层（冰下自然水）的划分方法，系统的提出了利用电导率识别冰层上、下界面的冰层厚度检测方法及其系统结构。C研制成功了新型的研制成功了新型的“冰层厚度传感器冰层厚度传感器”，实现了对冰层的定点连续自动检测。D将单片机技术，数字电子信息处理技术及移动通信技术融为一体，设计并研制成功数字化定点冰情遥测系统。设计并研制成功数字化定点冰情遥测系统。E利用移动通信中的GSM短消息数据传输技术作为辅助手段，提出了对河道区域范围内离散监测点冰层厚度与冰下水位的自动化定点连续检测的方法。F将研制成功的冰层厚度传感器及数据采集系统应用于国家第21次南极科学考察对“暜里兹湾海冰”及中山站周边湖泊及冰川变化进行观察与研究项目中。关键词关键词冰层厚度；水位；电导率；传感器；GSM本研究得到国家自然科学基金重点项目（40233032）、国家自然科学基金面上项目（60274028）、山西省自然科学基金项目（20021036）的资助。

简介：河海大学硕士学位论文喀斯特地区土地利用景观及流域蓄水能力分析姓名康薇薇申请学位级别硕士专业地理信息系统与遥感指导教师张友静20080601同分析植被生长状况和流域蓄水能力之间的关系。降雨量对于流域的蓄水能力有较大的影响，降雨越多蓄水能力越强；流域内植被覆盖度高的流域蓄水能力强；流域边界密度小，景观破碎度小，聚集度指数高，连通性强，有利于植被生长，流域蓄水能力强。人类活动对于流域的植被类型影响明显，人口密度较大，人为开垦严重，蓄水能力较弱。社会经济因素也是影响流域蓄水能力的重要因素，社会经济水平高的地区人类活动剧烈，植被破坏严重，流域蓄水能力弱。关键词喀斯特、土地利用景观、NPP、蓄水率、生态蓄水指标、蓄水指数

简介：长沙理工大学硕士学位论文湘江流域中长期水文预报姓名宋荷花申请学位级别硕士专业水力学及河流动力学指导教师胡国华李正最20080501ABSTRACTMEDIUMLONGTERMHYDROLOGICALFORECASTPLAYSANIMPORTANTROLEINFLOODCONTROLANDDROUGHTRELIEFRESERVOIROPERATIONWATERRESOURCESPLANNINGANDMANAGEMENTETCATPRESENTMEDIUMLONGTERMHYDROLOGICALFORECASTISAFIELDFALLINGBEHINDRELATIVELYINHYDROLOGYSTILLINTHESTAGEBEINGEXPLORINGANDDEVELOPING耽EXIANGJIANGRIVERISTHELARGESTRIVERINDONGTINGLAKEWATERSYSTEMITHASFREQUENTLYBEENTHREATENEDBYFLOODRISKSFORALONGTIMEINADDITIONTHEACCURACYOFTHECURRENTMEDIUM10NGTERMHYDROLOGICALFORECASTREMAINSLOWWHICHISDIFFICULTTOEFFECTIVELYGUIDETHEPRODUCTIONPRACTICENLEREFORETHESTUDYOFMEDIUM10NGTERMHYDROLOGICALFORECASTOFTHEXIANGJIANGRIVERBASINISOFGREATSIGNIFICANCEFORFLOODCONTROLANDDROUGHTRELIEEASWELLASSTORAGEOFWATERINTHEDONGTINGLAKEINTHISPAPERTHEPREDICTORSSUCHASRAINFALLANDATMOSPHERICCIRCULATIONWHICHAFFECTTHEHYDROLOGICALPHENOMENONINEARLIERSTAGEATXIANGTANSTATION，WHICHISSELECTEDASTHEREPRESENTATIVESTATIONOFTHEXIANGJIANGRIVERBYCOMBININGCAUSEANDEFFECTANDSTATISTICALANALYSISWITHFUZZYANALYSISBASEDONTHIS，THEMEDIUMLONGTERMHYDROLOGICALFORECASTINGMODELOFFUZZYPATTEMRECOGNITION，ARTIFICIALNEURALNETWORKANNANDMULTIVARIATEMIXEDREGRESSIONMMRARESETUPTOFORECASTTHEANNUALMAXIMUMPEAKDISCHARGEANDMONTHLYDISCHARGEASUITABLE，SIMPLE，PRACTICALANDHIGHERFORECASTACCURACYFORECASTINGMODELOFXIANGT锄STATION，ISDESIREDTOESTABLISHMAINRESULTSANDCONCLUSIONSAREASFOLLOWSBASEDONFUZZYPATTERNRECOGNITION，ARTIFICIALNEURALNETWORKMODELANDMULTIVARIATEMIXEDREGRESSIONTHEQUALIFIEDRATESOFAB11UALMAXIMUMPEAL【DISCHARGEANDMONTHLYDISCHARGEOFXIANGJIANGRIVERBASINAREMORETHAN80PERCENT，THEREASONABLEANDHIGHRELIABILITYOFTHEMEDIUMLONGTERMHYDROLOGICALFORECASTOUTCOMEINXIANGJIANGXIANGTANSTATIONAREAUTHENTICATEDMUTUALLYFROMTHEFORECASTSANDERRORRESULTSOFANNUALMAXIMUMPEAKDISCHARGEANDMONTHLYDISCHARGE，ITISOBVIOUSLYTHATTHEARTIFICIALNEURALNETWORKMODELSHASTHESMALLESTERRORANDTHEHIGHESTFORECASTACCURACYINTHESPECIALY，EAROFLARGEANDSMALLDISCHARGESATISFACTORYRESULTSCALLBEGOTTENWHENTHEANNMODELSIMULATINGERRORISABOUT10％～LL％FORREFERENCEMULTIPLECORRELATIONTOEF矗CIENTISTAKENASANIMPORTANTPARAMETERTOAPPRAISINGMODELFORECASTINGWHENMULTIPLECORRELATIONTOEFJFICIENTNOLESSTHAN075，THEMODELWORKSOUTSATISFACTORILYINAWORD，THERESEARCHRESULTSHAVEIMPORTANTREFERENCEVALUETOFLOODPREVENTIONANDDROUGHTEONTROLOFXIANGJIANGRIVERANDTHESTORAGEOFDONGTINGLAKEKEYWORDSMEDIUMLONGTERMHYDROLOGICALFORECAST；ANNUALMAXIMUMPEAKDISCHARGE；MONTHLYDISCHARGE；FUZZYPATTERNRECOGNITION；ARTIFICIALNEURALNETWORK；MULTIVARIATEMIXEDREGRESSION；XIANGJIANGRIVERBASINH

简介：华东师范大学博士后学位论文ONKEYMECHANISMSDRIVINGTHEENVIRONMENTALCHANGESINJIAOZHOUBAYSTATISTICALANALYSISOFABRUPTCHANGESANDMODELLINGSTUDYONWATERAGEANDNUTRIENTSTRANSPORTINJIAOZHOUBAY姓名刘哲申请学位级别博士后专业自然地理学指导教师张经20060901SURROUNDINGRIVERSSHOWSLON西TUDINALGRADIEMIN恤ENORTH雒LDLATITLLDINAI伊ADIENTINTHESOUTH．THEIMERACTIONANDCOMBINATIONOF也ERIVCRSAROUNDJZBKADSTO也ECOMPLEXREASONSFORT11EEUTROPHICAT王ONPIDCESSES．IF廿1EADVECTJONISOVENVHELNLEDD嘶NGTLLEMATERIAL把MSPONPROCESS，THEWATERAGECANBECALCULATEDBYINSITUMEASUREMEMOFTHECONCENTRATIONSOFMECONSEN，ATIVETRACERSANDRADIOACTIVEISOTODES．A3DBI0109ICALMODELWASDEVCLOPEDA11DCOUPLEDTOAHYDRODYN锄ICMODEL，I．E．，PRINCETONOCEANMODEL，FORSIRNULATINGⅡLESE船ONALVARI撕ONANDBUDGETOFDISSOLVEDINO唱ANICNIⅡOGEN，PHOSPHATEAILDSILICATE，INJIAOZHOUBAY．THEMODELLEDNUTRIENTSDIS仃IBUTIONPATTEMISCONSISTENT晰TLLOBSERVATION．SILICATE，THEMOSTIMPORTANTLIMITINGELEMEMFORPHYTOPLANKTONGMWCLL，ISCHARACTERIZEDBYCOILSUMPTIONINSPRIR培，INCREASEINSUMMERANDAUTUMN，ANDACCUMULATIONINWINTER，WHIIEDISSOLVEDINO唱ANICILITROGENA11DPHOSPHOMUSKEEPMCREASINGTRENDWITHLOWRATESINSPRIRLG，OWINGTOEXCESSIVERIVCRLOADS．PHYTOPLANKTONPLAYSAILIMPORTANTROLEIN叫TRIENTRENEWALMROUGHPHOTOSYLLTLLESIS趾DRESPIRATIONPROCESSES．DUDNGANANNUALCYCLE，7．83103TN，O．28X103TP孤D3．93X103TSIARETRANSPONEDTOMEBAY’SOU嘧SEA，IE，THEYELLOWSEA，SUGGES曲GMATJIAOZHOUBAYISASI蛐FIC趾TNUTRIENTSSOURCEFORTHEYELLOWSEA．THESPATIALDISTRIBUTIONOFNUTRIEMSISCHARACTERIZEDBYVENLCALLYHOMOGENEOUSPROFILES，HI曲CONCEN仃ATIONINSIDEMEBAYALLDLOWCONCEMRATIONTOWARDTHEBAYCHANNEL．THCSEFEATURESARCMAINLY90VEMEDBYSTRONGTURBULEMMIXING，NUVIALINNLL【，WATEREXCHALLGERATEAILDYELLOWSEAWATERINTMSION．NUMERICALEXPERIINEMSSUGGESTTLLAT也EGOVEMMENTSHOULDPAYENOU曲ATTENTIONTOPMPERLAYOUTFORSEWAGEDMIILAGE．“

简介：分类号密级中国地震局地球物理研究所硕士学位论文地震活动性模型在地震危险性分析中的方法研究及其应用STUDYONTHEMETHODOFSEISMICITYMODELLINGOFSEISMICHAZARDANALYSISANDITSAPPLICATION学科专业研究方向王猩丝震堂指导教师一直重湮学位级别亟二OO八年七月，≯IF一产目录摘要IABSTRACT第一章前言1第二章地震活动性预测并划分未来地震发生的潜在区域方法研究721方法8，22命中次数百分数的统计分析1323估计P值1424对我国不同构造环境区域的分析15241东北地区15242华北地区16243湖南地区17244四川地区1825结论。19第三章历史地震资料用于震中和震级的定量估算23引言2331方法原理2432烈度数据2533华北地区烈度一震级一震中距关系2734烈度震级标定3135震中区估算。3236震级估算3837方法验证383711679年三河一平谷地震383721969年渤海地震曲4038讨论4239结论43第四章湖南地区空间光滑地震活动性模型在地震危险性分析中应用45I；II吉1145J。R’，41区域地震地质概况46411区域地震构造概况46412区域地震活动性概况4742地震资料及完整性分析。49421地震目录49

简介：西安理工大学硕士学位论文旱区水库抑制水面蒸发试验研究姓名武金慧申请学位级别硕士专业水文学及水资源指导教师李占斌李鹏20080301西安理工大学硕士学位论文5对比分析了三种材料覆盖条件下抑制水面蒸发措施的经济效益。从节水的产出效益方面衡量，经济效益高低顺序依次为聚乙烯软片聚苯乙烯泡沫塑料板石蜡。采用聚乙烯软片抑制水面蒸发的措施当年即可收回成本，建议在实际生产中推广。关键词水库蒸发；抑制水面蒸发措施；抑制水面蒸发模型；灰色拓扑预测；干旱半干旱地区

简介：同济大学海洋地质与地球物理系硕士学位论文多波多分量处理方法研究与应用姓名李彦鹏申请学位级别硕士专业固体地球物理指导教师马在田王卫华20000301。IO；JJJ0嚣毫ABSTRACTJL一。奠。●“MULTICOMPONENTSEISMICDATAPROCESSINGISQUIETDIFFERENTFROMCONVENTIONALPWAVEPROCESSINGTHEMAINDIFFERENTPOINTSARESWAVESTATICS，FASTANDSLOWSWAVEFIELDSEPARATION，PANDPSVWAVEFIELDSEPARATION，COMMONCONVERTEDPOINTCCPGATHERSORTING，PSVWAVEVELOCITYANALYSISANDSTACKINGINTHETHESIS，IPRESENTSOMENEWAPPROACHESTOSOLVETHESEPROBLEMSFIRSTLYLINEARRADONTRANSFORMAFTERCOORDINATESTRETCHBEAPPLIEDTOSHOTGATHERDIFFERENTWAVECANBEENFOCUSEDINTOSMALLAREADUETODIFFERENTVELOCITYSOWAVEFIELDSEPARATIONCANBEDONEINTRANSFORMEDDOMAIN；SECONDLY’THECCPGATHERCANBEACQUIREDTHROUGHSAMPLE’SHORIZONTALMOVINGINCOMMONOFFSETGATHER；THENANEQUIVALENTOFFSETTRANSFORMISINTRODUCEDTOPERFORMPSVVELOCITYANALYSIS；FINALLYNOSTRETCHINGSTACKINGSHOULDBEUSEDTOELIMINATETHEEFFECTOFNMOSTRETCHINGTHESEMETHODPRESENTEDINTHETHESISAREUSEDTOPROCESSTHEPRACTICALMULTICOMPONENTSEISMICDATA，AQUITEGOODRESULTHASBEENACQUIREDTHROUGHTHESEMETHODS’PROCESSINGWHENSWAVETRAVELSTHROUGHANISOTROPHYMEDIA，BIREFRINGENCEWILLHAPPENINTHETHESIS，IPUTFORWARDAMETHODTHATGETNATURALCOORDINATEAZIMUTHANDTIMELAGSIMULTANEITYACCORDINGTOTHERELATIONBETWEENTHEAUTOCORRELATIONANDCROSSCORRELATIONOFRTCOMPONENTSYNTHETICDATAPROCESSINGINDICATESTHATTHEMETHODISACCURATEANDEFFICIENT，FIELDDATAPROCESSINGALSOGETASOUNDRESULTKEYWORDCONVERTEDWAVE，FASTANDSLOWSWAVE，BIREFRNGENCE，WAVEFIELDSEPARATION。CCPGATHER，SWAVESTATIC，EQUIVALENTOFFSETCORRECTION

简介：中南大学硕士学位论文从遥感图像分析地壳运动兼对地震的认识姓名童琼申请学位级别硕士专业构造地质学指导教师高光明20090501ABSTRACTEARTHQUAKEISONEOFTHEMOSTSERIOUSNATURALDISASTERTOHUMANBEING．OURCOUNTRYISLOCATEDINBOTHEURASIANSEISMICBELTANDCIRCUMPACIFICSEISMICBELT，WHEREEARTHQUAKEDISASTERFREQUENTLYOCCURS．ASAMATTEROFFACT，SEISMICORIGINANDEARTHQUAKEPREDICTIONBECOMEHOTANDDIMCULTPROBLEMSDUETOTHECOMPLEXITYOFEARTHQUAKEANDIMPENETRABILITYOFLITHOSPHEREANDLOWPROBABILITYOFSEISMICEVENTS．ONTHEBASISOFPLATETECTONICSANDSEISMOLOGY,WEANALYZEEARTHQUAKESTRESSBYTAKINGTHETYPICALDESTRUCTIVEEARTHQUAKESSINCE2008ASEXAMPLESANDRESEARCHINGOFCHARACTERISTIESOFACTIVEFAULTSWITHTHEHELPOFREMOTESENSINGIMAGE．THEARTICLEFOCUSONTHEANALYSISOFGEOLOGICSTRUCTUREBACKGROUND，SEISMICORIGINANDEPICENTERMIGRATIONOFWENCHUANM8．0EARTHQUAKEHAPPENEDONMAY12，ASWELLASANALYZEDANDCOUNTTHESTRUCTURE，ORIGINANDEPICENTEROFTHE1WATEMIYAGIINLANDEARTHQUAKEHAPPENEDONJULY14，PANZHIHUAEARTHQUAKEHAPPENEDONAUG．30ANDPAKISTANEARTHQUAKEHAPPENEDONOCT．29，TRIESTOSUMMARIZERULESANDANALYSISREGIONTHATISPRONETOEARTHQUAKES，ANDDORESEARCHONEARTHQUAKEPREDICTION．ACCORDINGTOTHEANNUALDISPLACEMENTOFPACIFICPLATEEURASIANPLATEFROMGOOGLEEARTH，THEEXTRUSIONFROMTHEPACIFICPLATETOTHEEURASIANPLATEISAMAJORFACTORCAUSED舱NCHUANEARTHQUAKE。WHILEEXTRUSIONOFINDIANPLATETOWARDEURASIANPLATEISIUSTAUXILIARY．TOCOMBINETHEDATAINBANDS7。4AND1OFETMIMAGESISABLETOPROVIDEABUNDANTINFORMATIONOFGEOLOGICALANDTERRESTRIALSURFACEENVIRONMENTDATA．BYIMAGERYINTERPRETATIONOFLINEARITYSTRUCTURAL，EXTRACTIONOFSTRUCTURALINFORMATIONANDISOLINEMAPOFLINEARITYSTRUCTURALDENSITY,WEFOUNDTHATTHEMACROSEISMICAREA，WHEREISPOSSIBLEOFSTRESSCONCENTRATIONPOINT，ISALWAYSTHEINTERSECTIONOFLINEAMENT．THENWECANDEDUCETHATOTHERLINEAMENTINTERSECTIONSAREPRONETOEARTHQUAKES．BASEDONTHECRUSTMOMENTLAWANDTOSUMMARIZESEISMICCHARACTERISTICS，WECANFINDTHATTHEINTERSECTIONAREAOFFAULTSAND‘HONGLIEGEOLOGICALBELT’ISALSOSTRESSCONCENTRATIONAREA．W．ESHOULDMONITORAREASWHERESTRESSII

简介：点击查看更多小流域产流产沙过程的模型试验研究.pdf精彩内容。

简介：南昌大学硕士学位论文飞行器远尾区及极光带下层区电双层的分析研究姓名廖晶晶申请学位级别硕士专业光学指导教师刘三秋20100601ABSTRACTABSTRACTDOUBLELAYERISALOCALSTRUCTUREINTHEPLASMACAPABLEOFSUSTAININGHIGHPOTENTIALDROPS．TYPICALLY,THEYAREQUOTEDASHAVINGAWIDTHOFTENSOFDEBYELENGTHSTHECORRELATIONLENGTHFORPOTENTIALFLUCTUATIONSINAPLASMA．AL’PERTETA1．SHOWEDTHATDOUBLELAYERISFORMEDINTHEWAKEREGIONOFSPACEVEHICLESMOVINGTHROUGHIONOSPHERE．STUDYINGTHISSTRUCTUREISIMPORTANTFORDETECTINGASPACEVEHICLEWITHASTEALTHCHARACTERISTICANDPREVENTINGSPACEVEHICLESBEINGHARMEDBYDOUBLELAYER．BESIDES，THEMEASUREMENTSBYTHEFASTFASTAURORALSNAPSHOTSATELLITEREVEALDOUBLELAYERSWHICHCANBEPOSSIBLEMECHANISMOFACCELERATINGELECTRONSALSOEXISTINTHEDOWNWARDCURRENTREGIONOFTHEAURORA．FIRST，ONTHEBASISOFTHENONSTEADYNONLINEARCOUPLINGEQUATIONSOFLOWFREQUENCYPOTENTIAL，HIGHFREQUENCYFIELDANDDENSITYDISTURBANCEINTHEFARWAKEREGIONOFSPACEVEHICLESBYLIETA1．，WEHAVENUMERICALLYSOLVEDTHECOUPLINGEQUATIONS，ANDOBTAINEDTHEEVOLUTIONOFLOWFREQUENCYPOTENTIAL．THERESULTSSHOWTHATDOUBLELAYERISFORMEDINTHEFARWAKEREGIONOFSPACEVEHICLES．THECOMBINEDEFFECTSOFTHECOLLAPSEDENSITYARISINGFROMTHECOLLAPSEFIELDANDTHEINTERACTIONOFTHEVEHICLEWITHPLASMASLEADTOTHEFORMATIONOFTHEDOUBLELAYER．THERAMPPOTENTIALANDTHICKNESSOFTHEDOUBLELAYERTHATWEOBTAINARETENSOFKT,|ETANDTENSOFDEBYELENGTHSRESPECTIVELY,WHICHAREINAGREEMENTWITHTHEPREVIOUSCALCULATEDRESULTSBYAL’PERTETA1．SECOND，ONTHEBASISOFTHENONLINEARCOUPLINGEQUATIONSOFLOWFREQUENCYPOTENTIAL，HIGHFREQUENCYFIELDANDDENSITYDISTURBANCEINSTRONGTURBULENTPLASMAS，WEHAVENUMERICALLYCALCULATEDTHENONLINEARCOUPLINGEQUATIONS．THEEVOLUTIONOFLOWFREQUENCYPOTENTIALISOBTAINED．THERESULTSSHOWTHATDOUBLELAYERINTHEDOWNWARDCURRENTREGIONOFTHEAURORAISFORMEDBYLOCALIZEDDROPINDENSITYOWINGTOCOLLAPSEDHIGHFREQUENCYFIELD．THESTRUCTUREISADOUBLEDOUBLELAYERANDANONLINEARENTITYCAVITON．ANDTHERAMPPOTENTIALOFTHEDOUBLELAYERISINRANGEOF1440VANDTHETHICKNESSOFTHESTRUCTUREISBETWEENL00AND200M，ROUGHLYTENSOFDEBYELENGTHS，WHICHAREALLINHARMONYWITHTHEMEASUREMENTSBYFASTSATELLITE．1II