简介：根据国家有关标准规定，凡更新地形图，都必须以新的图幅编号方法表示。而第一代地形图一律以旧式图幅编号方法表示为了方便新旧图号的互相检索，本文介绍了有关互换的数学模型，列举了互换例子，并据此编制了互换程序软件，可供各有关生产单位和组织生产部门参考使用

简介：针对传统分类方法精度不高、感兴趣目标分类不理想等缺陷，采用多特征组合的支持向量机影像分类方法，利用颜色矩、颜色集和灰度共生矩阵进行特征提取，总体精度、Kappa系数和混淆矩阵作为评价指标对单一特征、组合特征的不同分类结果进行分析。实验结果表明，该方法有效地解决了单数据源分类不完整、精度低等问题，对高维输入向量具有较高的推广力。

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简介：Inthispaper,researchofaftershockmechanismsisreviewed,includingheterogeneityofmediumandstress,mechanicalloading,fluidintrusionandstresscorrosion,andratestatedependence.Previousstudieshaveindicatedthattheheterogeneityofmediaandstressisthebasicpremiseofaftershocksgenerated.Fromthepointviewofmechanics,transientcreepandafterslipcanexplainthedecayofaftershocksinashorttimeafteramainshockandtherelaxationofstresstendstointerpretthecharacteristicsoflong-termaftershocks.Fluidintrusionandstresscorrosioncontroltheevolutionprocessoftheaftershocksundercertainconditions.Theinteractionbetweenthefaultsperturbedbythemainshockalwaysexistsduringtheaftershockactivities.Allkindsofmodelsandthetheorieswanttocomplywiththetwobasicpower-lawrelationships---theG-RlawandOmorilawtosomeextent.

简介：2012年7.21特大暴雨期间,香山街道公主坟15号院边坡出现垮塌并造成了破坏,边坡亟需治理。本文介绍了该边坡的基本特征,分析了边坡的变形情况及影响因素并确定了边坡的破坏模式,并选用瑞典圆弧法评价了边坡的稳定性。根据边坡的实际情况,选择了适于土质边坡防治的新型支挡加固措施一格构锚固工程,并辅以挡土墙工程及绿化工程,作为边坡治理的工程措施。

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简介：ＤｅｆｏｒｍａｔｉｏｎｄａｔｕｍｉｎｓｏｕｒｃｅｍｅｃｈａｎｉｓｍｉｎｖｅｒｓｉｏｎＳＨＯＵ－ＷＥＮＧＯＮＧ（巩守文，ＱＩＮＧ－ＬＩＡＮＧＷＡＮＧ（王庆良），ＹＩ－ＱＩＮＧＺＨＵ（祝意青）ａｎｄＢＩＮＧＣＨＥＮ（陈兵）（ＳｅｃｏｎｄＣｒｕｓｔａｌＤｅ...

简介：Ｓｅｉｓｍｏｇｅｎｉｃ　ｍｅｃｈａｎｉｓｍ　ｏｆ　ｔｈｅ　Ｌａｎｃａｎｇ　ａｎｄ　Ｇｅｎｇｍａ　ｅａｒｔｈｑｕａｋｅｓ（俞维贤）（周瑞琦）（候学英）（周光全）ＳｅｉｓｍｏｇｅｎｉｃｍｅｃｈａｎｉｓｍｏｆｔｈｅＬａｎｃａｎｇａｎｄＧｅｎｇｍａｅａｒｔｈ...

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简介：试用被坝所围住的水从2008年9月27日在三座峡水库被继续。在Hefeng有强壮的变丑和失败()山崩当水库水水平从173m的高度下降了时。它显示变丑是仔细与水库水变化有关。为这个原因，在变丑的水库水的效果被学习，拿象在这篇文章的一个例子的Hefeng山崩。首先，强壮的变丑区域的地质的特征和变丑状况被分析透露内在的因素和在水的条件下面的变丑的模式铺平变化。第二，山崩的稳定性在升起并且下降的过程，和在水库水水平变化和山崩变丑之间的相应关系期间被计算进一步被识别。最后，渗出物领域和在井的线下面的山崩身体的力量条件被分析揭示水库水的效果。而且，为更好可渗透的水库山崩，在水库水升起期间，渗出物力量的有利效果削弱相反的效果，这能被结束高举强迫水库水升起稳定性上的小效果，和没有变丑被引起了；但是在下降水库期间流水，渗出物力量的相反的效果在uplift力量的相反的效果上被附加，它引起稳定性戏剧性地减少并且在山崩前面导致累积身体的失败。

简介：ApossiblemechanismisputforwardinthispaperforElNinoeventsfromtheviewpointofplatetec-tonicsandoceanicgeology.Anumberofthedataarecitedtoillustratetheviewsthatsea-bottomvolcanicac-tivitiesandhotspringsmaycauseElNinoevents.

简介：设计了基于资源三号卫星融合影像修测1∶5万地形图的方案。根据方案首先对试验区资源三号卫星影像进行正射纠正、影像融合等影像处理，然后将软件Mapstore用于资源三号卫星融合影像进行地形图修测，经过遥感影像目视解译、人机交互操作、后期编辑等处理，完成了1∶5万矢量地形图修测。试验结果表明，修测设计方案合理，资源三号卫星融合影像修测地图精度能达到国家成图规范要求，可用于1∶5万地形图修测。

简介：HAB(harmfulalgalbloom)isaseriousmarineecologicaldisaster.Uptonowthereisnodefiniteconclusionaboutitsmechanismofoccurrence.TheobservationresultsshowthattheHABbreakoutintheXiangshanBaywasmainlycausedbyphysicalconvergencecapacity,andthebreakoutprocesshadnodirectrelationtoeutrophication.AsanewideaitisthoughtthattheprocessoftheHABbreakoutismainlyaphysicalconvergenceoraccumulationprocessinsomeareas.AhypothesisaboutdynamicmechanismoftheHABappearingintheareaofftheChangjiangEstuaryisputforwardaccordingtohydrologyandtopographyandthepastwork,andabreakthroughisexpectedtobemadefordoingfurtherresearch.

简介：1,209earthquakesoccurredinXianyou,FujianfromAugust4,2010toOctober4,2013.ThelargestearthquakewasML5.0onSeptember4,2013.InordertostudytheXianyouearthquakesequenceandunderstandthecausativestructureandstressfieldofXianyou,thefocalmechanismsolutionsofsixearthquakes(ML>3.5)intheXianyouearthquakesequencearecalculatedusingthebroadbanddigitaldataoftheFujianSeismicNetworkwiththeseismicmomenttensorinversemethod.Theresultsshowthatthefocalfaultsofthesixearthquakesaresimilar,whichareallstrike-slipfaultsstrikingtothenorthwestwithhighdipangles.ThedirectionoftheprincipalcompressivestressaxesisnearSN,whichisdifferentfromthestressfieldofFujianregion.TheXianyouearthquakesequencemayhavebeeninducedbythestressadjustmentaftertheimpoundmentofJinzhongreservoir.

简介：Forskarntypedeposits,therearetwokindsofskarns,skarnformedbyfiltrating-diffusingmetasomatismandveinskarnformedbyfilling.Theveinskarn,discussedthispaperandconsideredtobemagmaticgenesis,ischaracterizedby:(1)occurringasveinwithdistinctboundarieswithcountryrocks,yetjustthesameeveninmarbleeasytobereplaced;(2)composedofamineralassemblagesimi-lartothatofgranite,containingpegmatiteaswellascoarseskarnmineralpockets,andsometimestran-sitedwithdikerocks;(3)clearcrystallinefeatureofdeposition;(4)sideronintietexture;(5)showingvesicular,bean-likeandflowstructures;(6)verycommonliquidimmiscibility;(7)verticalzoningofgravitationaldifferentiationcausedbyvolatileconcentrationupwards;(8)associatedandtransitedwithiron-copperorebodiesofmagmaticgenesisandtungsten-bearingquartzveinsofsilicatemagmaticgene-sisrichinvolatile;(9)meltinclusions.Twooriginsofskammagma,originatedbyassimilationofsilicatemagmaatitsemplacem

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简介：Withhypermediatechnologythestructureofapublicationcanbere-arrangedtoaccommodatemoreeasycognitionoftheideaandconceptbylinkingtheconceptswhicharerepresentedbydifferentmediaformsintoanintegratedconcept.Essentially,multimediaelectronicatlasisakindofelectronicpublication,whichhasmanycommoncharacterswithordinaryCD-ROMpublications.Forthedeeperexplorationofelectronicatlasitisveryimportanttounderstandtheinternalandgeneralstructureofthenewmediastructure.Theaimofthispaperistodiscusstheinternalstructureofmultimediaelectronicatlasasawholebyapplyingthemethodologyoflinguistics.

简介：ＴＨＥＣＩＳＫＭＥＣＨＡＮＩＳＭＡＮＤＴＨＥＩＮＥＲＴＩＡＬＧＲＡＶＩＴＡＴＩＯＮＡＬＷＡＶＥＳＩＮＳＨＥＡＲＦＬＯＷＷｕＨｏｎｇ（吴洪）；ＸｉａＹｏｕｌｏｎｇ（夏友龙）ａｎｄＺｈｅｎｇＺｕｇｕａｎｇ（郑祖光）（ＢｅｉｊｉｎｇＩｎｓｔｉｔｕｔｅｏｆＭ...

简介：TheQiangtangbasinislocatedbetweenKekexili-JingshajiangsuturebeltandBangong-Lujiangsuturebelt,andisdividedintothenorthpartandsouthpartbythecentralupliftthathasnocropoutofMesozoicstrata.WhentheJinshajiangOceanwasclosed,thesubductingplatewassubductedsouthward.InthecentralpartoftheQiangtangbasin,thecushioningeffectoftheasthenosphereresultedinthethermaldomingofthemantleandsubsequentlarge-scaleanatexis.Mantlesourcematerialsandantecticmaterialswereupwelledandextrudedintothemiddlecrust,leadingtothethickeningofthemiddlecrustandtheheatingandweakeningofthemiddletouppercrust,andresultingintherapiddeformation(detachment)andtectonicerosion,andintheisostaticupliftingandtheformationofmetamorphiccorecomplex.Theupwellingofanatecticmaterialswouldfurtherenhancethebuoyantrepercussion,whichwouldcombinewiththesidestressduefromextrusioninresultingintheformationofanextensionalstressfield.Theextensionalstructureanddetachmentfaultareformedundertheinfluenceofthelosingstabilizedgravitation.Inthedeformationareainboththeupperpartandthelowerpart,anextensionaldepositionareawouldbeformed,andthisisthegenerationofanewbasin.Themetamorphiccorecomplexofthecentralupliftiscomprisedofgneiss,whichisitselfoverlainbynon-metamorphictoweaklymetamorphiccoveringstrataintersectedbyfaults.