简介：在以后简短考察摄影测量学的历史在中国，大学生的开发和毕业生节目的教育，和相应课程设计被数据的使用从摄影测量学作为thestate水平钥匙纪律在被授于的武汉大学分析。大学里的摄影测量学的学术教育程序下雨了在摄影测量的职业的所有地里执行任务的学生。在最近的年里，摄影测量学的性质正在变化，多学科的geomatics很快发展中，摄影测量学的教育程序也在新概念和结构变化了改编很新的技术和这域的扩展。最后，为多学科的geomatics的要求的摄影测量学教育的前景被建议。对快、精确的3D的Thegrowing兴趣空间数据收集(例如城市建模和数字土)是导致摄影测量学的增加的需要主要工具，摄影测量的球场因此被请求新并且为大学geomatics和遥感度节目成为一个种有点职业的球场。

简介：ThispaperpresentsamethodforthecomputationoftheStokesfor-mulausingtheFastHartleyTransform（FHT）techniques.Thealgorithmismostsuitableforthecomputationofrealsequencetransform,whiletheFastFourierTransform（FFT）techniquesaremoresuitableforthecomputatonofcomplexse-quencetransform.Amethodofsphericalcoordinatetransformationispresentedinthispaper.Bythismethodtheerrors,whichareduetotheapproximatetermintheconvolutionofStokesformula,canbeeffectivelyeliminated.Somenumericaltestsaregiven.ByacomparisonwithbothFFTtechniquesandnumericalintegra-tionmethod,theresultsshowthattheresultingvaluesofgeoidalundulationsbyFHTtechniquesarealmostthesameasbyFFTtechniques,andthecomputation-alspeedofFHTtechniquesisabouttwotimesfasterthanthatofFFTtechniques.

简介：ThecoastallowlandsinnorthernJiangsuProvince,China,ischaracterizedbylowreliefandlowwatersurfacegradientinstreams.Thefloodingstagesarecommonlylowerthanthehigh-tidelevelandthetidalrangeisrelativelysmall.Allthesefactorsprohibitrapiddischargeoffloodwaterandmakethefloodregimeshereextremelysensitivetothesealevelrise.The1991PlumRainwasexamined,whenprecipitationwassignificantlyhigherthannormal.Theone-dimensionalopen-channelnon-conservativeflowmodelwasusedtosimulatethestreamflowinthechannelnetworkofstudiedarea.GIStechnologywasusedtodelineatethemaximuminundatedareabyanalyzingtheDEMs.

简介：为测试作为这个区域拿中国，新卫星严肃技术的潜力，为改进地区性的重力场模型的精确性追踪的satellite-to-satellite被学习。与是的WDM94引用，三个模型，的严肃异例剩余最近二个优雅全球重力场模型(EIGEN_GRACE02S，GGM02S)并且EGM96，被计算并且比较。为在三个模型的剩余之中的差别的原因被讨论。在剩余之间的Thecomparison证明在选择区域，EIGEN_GRACE02S或GGM02S比在更低的度部分(不到110度)的EGM96好。通过模型严肃异例剩余的分析，另外，有期刊性质的一些系统的错误在EIGEN和GGM模型，的更高的度部分存在，这被发现结果能也在SST严肃数据的确认作为引用被拿。

简介：Thispaperusesmulti-quadricequationsinterpolationtoes-tablishawidelycoveredandvaluablespeedfieldmodelofChina,withwhichthehorizontalcrustalmovementpatternsareobtained.Thepresent-dayverticalcrustalmovementvelocityim-ageofChinaisalsoexpressedbyGPSobservations,fromwhichwecanknowtheverticalcrustalmovementpatterns.

简介：Anewmethodologyforprecisegeoiddeterminationwithfinestlocaldetailsbasedonellipsoidalapproximationispresented.Thismethodologyisformulatedthroughthe'fixed-freetwo-boundaryvalueproblem'basedontheobservableofthetypemodulusofgravityintensity,gravityaccelerationandgravitypotentialattheGPSpositionedstations,withsupportoftheknowngeoid'spotentialvalue,W0.

简介：这份报纸在稻田在Fuzhou区域印射上介绍ENVISATASAR数据申请，用在2005获得的多时间的ASAR双极化数据。为这里处理的ASAR数据的过程为反散射从振幅包括数据刻度，图象登记，点缀减小和数据格式的变换到dB。米饭的反散射与种阶段的米饭增加，它与另外的陆地封面不同。基于图象差别技术，6个计划与ASAR被设计不同时间并且为稻田印射的极化数据。在在米饭庄稼的早时期和成长或成熟的时期的图象之间的差别图象，比在在一样的日期的不同极化之间的那些差别图象对米饭抽取更合适。最精确的结果近来，米饭抽取基于在10月和8月获得的HH极化数据的差别被完成。因此为稻田印射，时间的信息比极化信息更重要。数据为印射的高精确性米饭在米饭的早成长的季节期间是很重要的。

简介：自从1980年代，评论在Yangtze三角洲在环境发展和环境考古学的研究上被进行。以前的环境发展和环境考古学的研究结果能被总结进4个方面：1)泰胡·莱克的形成和进化；2)在全新统时代的违反和海平面的变化；3)史前的环境的重建；并且4)在人的文明(文化打断的形成)的上升和秋天的环境变化的影响。基于这评论，在现在的研究方法的一些限制和可能的结果在这篇论文被指出。

简介：Althoughitiswellknownthatcoseismicgravitychangestakeplaceduringanearthquake,previousresearchhasnotyieldedconvincingevidencedemonstratingthatsignificantgravitychangesoccurbeforelargeearthquakes.Furthermore,evenifwesuspectthatgravitychangesoccurbeforelargeearthquakes,wehaveyettodemonstratehowtoconsistentlyobservethesechangesforusefulearthquakeforecastthatwouldbringbenefitstosociety.Weanalyzedgroundgravitysurveydataobtainedin1998,2000,2002,and2005atstationsoftheCrustalMovementObservationNetworkofChina(CMONOC)andexaminedgravitychangesbe-foretheoccurrenceofninelarge(Ms≥6.8)earthquakesthatrupturedwithinornearmainlandChinaandTaiwanfromNovember2001toAugust2008.Resultsfromthisanalysisshowthatsignificantgravitychangesoccurredacrossalargeregionbeforeeachoftheseninelargeearthquakes,andthesechangesweredetectedbyrepeatedgroundgravitysurveysthroughCMONOC.Althoughthesegravitychangesweresignificant,moreresearchisneededtoinvestigatewhetherthesegravitychangescouldbeviewedasprecursorsoflargeearthquakes.Limitationsanduncertaintiesinthedataincludesparsenessofthegravitymonitoringnetwork,longtimeintervalsbetweenconsecutivegravitysurveys,inevitablemeasurementerrors,hydrologicaleffectsongravity,andeffectsofverticalcrustalmovementsongravity.Basedontheseobservations,wemakeseveralrecommendationsaboutpossiblefuturedirec-tionsinearthquake-relatedresearchusinggravitymonitoringdata.

简介：ThispaperfocusesonthestudyofoceanbathymetricinversionfromsatellitealtimeterdatabyusingFFTtechnique.Inthisstudy,thefree-airgravityanomaliesovertheSouthChinaSeaaredeterminedbythesatellitealtimeterdataofGEOSAT,ERS-1,ERS-2andT/P.Andthe2.5′×2.5′bathymetrymodelinSouthChinaSeaiscalculatedfromthegravityanomalieswiththeinversionmodelgiven.Aftertheanalysisoftheinversionandthecomparisonbetweentheresults,someconclusionscanbedrawn.

简介：Coastallowlandshavelargeareasofhazardimpactandrelativelylowcapacityofpreventiontothewaterrelatedhazards,whichhavebeenindicatedbythewide-spreadfloodhazards,highpercentagesoflandwithhighfloodvulnerability.Increasingpopulationpressureandtheshiftofresourcesexploitationfromlandtoseawillforcemoreandmorecoastallowlandstobedevelopedinthefuture,furtherenhancingthedangerofwater-relatedhazards.Inthispaper,thecoastallowlandsinthenorthernJiangsuprovince,China,wereselectedasacasestudy.TheInterpretationStructuralModel(ISM)wasemployedtoanalyzethedirectandindirectimpactsamongtheelementswithinthesystem,andthereby,toidentifythecausalelements,middlelinkages,theirexpressions,andrelations.

简介：BasedonthedevelopingtendencyofpresentChina'sbasicGIS,thispaperdiscussesthedesigningideaforscalesof1∶10000,1∶50000,1∶250000and1∶1000000pyramidlikemultilayerandmultiresolutionofthebasicGIS.AtechnicallinefortheconstructionofbasicGISofthewholecountryandvariousprovincesforsustainabledevelopmentisputforward.AndsomeimportanttheoreticalGISissuestouchedbythetechnicalprocessarediscussed.

简介：ThepolicyoftheChinesegovernmentconcerningthehorizontalexpansionofthecultivatedlandthroughthereclamationofdesertsoilsresultinatotalincreaseof665.985km2duringtheperiod1987-1999inNorthShaanxi.Thisincreaseislessthanthelossinarablelandbyurbanization.Theacceleratedrateofchangeinagriculturalareascallsformorerapidsurveysofurbanizationandlossofarableland.Remotesensinghasanumberofadvantagesoverground-basedmethodsforsuchsurveys.Themulti-scaleconceptofremotesensingdatahelpusstudytheprobleminfourtowns.Severalmapswereproducedtoanalyzethesituationofurbancoverageindifferenttimes.Theevaluationofthestatus,rateandriskofurbanizationarebasedonanacceptedaverageofurbanincreaseas2%ofpopulationgrowthperyear.

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简介：OnthebasisofthecharacteristicoftheperfectspatialdistributionoftheT/Paltimeterdata,aspatialharmonictidalanalysisisperformed,whichtransferstidalharmonicconstantsHandgofeachconstituentintoapairofparameters:thecosinepartUandsinepartV.Andeachpartisexpandedintoapolynomial.Thepolynomialcoefficientsareestimatedwithaltimeterdataupontheleastsquarescriteria.ThusthemodelsofprincipaltidalwavesintheSouthChinaSeaareestablished.72cyclesofT/Pdatafromcycle11through82areincludedinthecalculation.Themodelsareevaluatedwithdifferentapproachesanddataset.Theconclusionsarethatthetidemodescanprovidepartialtideamplitudeswith3cmaccuracy,andthatphaselagsdeviationofthosetideswithamplitudelargethan10cmarewithin±10°.

简介：Anewcomputationalprocedureforderivationofmarinegeoidona2.5′×2.5′gridinanon-tidalsystemovertheSouthChinaSeaandthePhilippineSeafrommulti-satellitealtimeterseasurfaceheightsisdiscussed.Single-anddual-satellitecrossoverswereperformed,andcomponentsofdeflectionsoftheverticalweredeterminedatthecrossoverpositionsusingSand-well'scomputationaltheory,andgriddedontoa2.5′×2.5′resolutiongridbyemployingtheShepard'sinterpolationprocedure.2.5′×2.5′gridofEGM96-derivedcomponentsofdeflectionsoftheverticalandgeoidheightswerethenusedasreferenceglobalgeopotentialmodelquantitiesinaremove-restoreproceduretoimplementtheMolodensky-likeformulavia1D-FFTtechniquetopredictthegeoidheightsovertheSouthChinaSeaandthePhilippineSeafromthegriddedaltimeter-derivedcomponentsofdeflec-tionsofthevertical.Statisticalcomparisonsbetweenthealtimeter-andtheEGM96-derivedgeoidheightsshowedthattherewasaroot-mean-squareagreementof±0.35mbetweentheminaregionoflesstectonicallyactivegeologicalstructures.However,overareasoftectonicallyactivestructuressuchasthePhilippinetrench,differencesofabout-19.9mwereobtained.

简介：高度表数据和海洋潮模型的质量对沿海的严肃异例的恢复批评。在这贡献，三重新追踪方法(阀值，改进阀值和Beta-5)与在一个浅水区域上改进高度表数据的目的被调查。比较显示改进阀值是在中国海上的最好重新追踪的方法。二个海洋潮模型，NAO99b和CSR4.0，被分析。不同的潮模型在处理高度表数据使用了的结果表演可以导致差别在恢复沿海的严肃异例的超过10mGal。另外，NAO99b是比在中国海的浅水区域上的CSR4.0更合适的。最后，在中国海上的严肃异例被最少的广场搭配从重新追踪的Geosat/GM和ERS-1/GM数据计算。有shipbornegravimetry数据的比较证明从重新追踪的数据的严肃异例比从non-retracked数据的那些显著地优异。当另外的二导出高度表的严肃当模特儿，我们的结果有一样的顺序：Sandwell&Smith(V16)和DNSC08。

简介：光合地活跃的放射(同等)的大小，为模仿植物生长和生产率不可缺少，通常是很少见的。这研究试图为估计在波伊昂·莱克公民自然保护区以内到达地球表面的每日的同等比较二个推测和推测插值方法，中国。在南昌气象学的车站的每天全球的太阳的放射记录和在在波伊昂·莱克附近的九个气象学的车站的每日的阳光持续时间大小被获得完成目的。使用的同等的二个推测方法记录了并且估计分别地，在自然保护区附近的南昌车站和三个车站(Yongxiu，Xingzi和Duchang)的全球太阳的放射被执行并且联合triangulated的一个空间插值方法不规则的网络(锡)和反的距离weighting(IDW)被实现估计每日的同等。用同等的三个方法的表演评估在Dahuchi保存车站测量了(测量=的天数字105天)揭示了那：(1)空间插值方法完成了最好的同等评价(R2=0.89，s.e=0.99，F=830.02，P<0.001)；(2)来自南昌车站的推测方法获得了不偏的结果(R2=0.88，s.e=0.99，F=745.29，P<0.001)；然而，(3)从Yongxiu，Xingzi和Duchang车站的推测方法不对为他们的偏导的评价的这个特定的地点合适。就支持推测和插值方法的假设和原则而言，作者断定空间插值方法比推测方法生产更可靠的结果并且在所有测试方法，和更多的同等大小保持最大的潜力应该被记录评估季节，为他们到波伊昂·莱克的整个自然保护区的申请的这些模型的每年、空间的稳定性。

简介：Itisnecessarytoestimateheavymetalconcentrationswithinsoilsforunderstandingheavymetalcontaminationsandforkeepingthesustainabledevelopmentsofecosystems.Thisstudy,withthefloodplainalongLe'anRiveranditstwobranchesinJiangxiProvinceofChinaasacasestudy,aimedtoexplorethefeasibilityofestimatingconcentrationsofheavymetallead(Pb),copper(Cu)andzinc(Zn)withinsoilsusinglaboratory-basedhyperspectraldata.Thirtysoilsampleswerecollected,andtheirhyperspectraldata,soilorganicmattersandPb,CuandZnconcentrationsweremeasuredinthelaboratory.Thepotentialrelationsamonghyperspectraldata,soilorganicmatterandPb,CuandZnconcentrationswereexploredandfurtherusedtoestimatePb,CuandZnconcentrationsfromhyperspectraldatawithsoilorganicmatterasabridge.Theresultsshowedthattheratioofthefirst-orderderivativesofspectralabsorbanceatwavelengths624and564nmcouldexplain52%ofthevariationofsoilorganicmatter;thesoilorganicmattercouldex-plain59%,51%and50%ofthevariationofPb,CuandZnconcentrationswithestimatedstandarderrorsof1.41,48.27and45.15mg·kg-1;andtheabsoluteestimationerrorswere8%-56%,12%-118%and2%-22%,and50%,67%and100%ofthemwerelessthan25%forPb,CuandZnconcentrationestimations.Weconcludedthatthelaboratory-basedhyperspectraldataholdpotentialsinesti-matingconcentrationsofheavymetalPb,CuandZninsoils.Moresamplingpointsorotherpotentiallinearandnon-linearregressionmethodsshouldbeusedforimprovingthestabilitiesandaccuraciesoftheestimationmodels.