月表典型区撞击坑形态分类及分布特征-论文.pdf

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1、第19卷第6期地学前缘(中国地质大学(北京)；北京大学)Vo1．19No．62012年l1月EarthScienceFrontiers(ChinaUniversityofGe。sciences(Beng)；PekingUniversity)NOV．2O12月表典型区撞击坑形态分类及分布特征何姝琚，陈建平，李珂，王翔，李智强1．中国地质大学(北京)地球科学与资源学院，北京1000832．北京市国土资源信息开发研究重点实验室，北京100083HeShujun，ChenJianping，LiKe，WangXiang，LiZhiqiang1．Schoolo

2、fEarthSciencesandResources，ChinaUniversityofGeosciences(Beijing)，Beijing100083，China2．LandResourcesInformationDevelopmentandResearchKeyLaboratory0厂Beijing，Beijing100083，ChinaHeShujun，ChenJianping，LiKe，eta1．Themorphologicalclassificationanddistributioncharacteristicsofthecrater

3、sintheLQ-4Area．EarthScienceFrontiers，2012，19(6)：083—089Abstract：Themajorcircularstructureson1unarsurfacearecraters，volcanicringsandlunarfornix．Themostwidespreadgeologictectonicelementson1unarsurfacearecraters．Becausethereareagreatnumberandalargevarietyofcraters，theirformationp

4、rocessesareproceedingalongwiththeevolutionoftheentirelunargeology．TheselunarsurfacestructuresmaygiveUSanearlycompleterecordoftheprocessesandtypesoftransformationoflunarsurfacelandformsovertime，andthehistoryoftheplanet．Onthebasisoftheremotesensingimagesandthemorphologicalcharac

5、teristicsoftheimpactcraters，thecratersonthemooncanbeclassiftedinto7types，includingthenormal，bowl—shaped，flat—bottomed，centralmound，complicatedandresidu—alcraters．UsingtheChang’e_IimagesandtheLROCdataandviewingfromthestructureandmaterialas—pects，wehavecompiledthenewmorphologic(

6、craterfloor，craterrimcrest，craterwail，craterrim，craterrimmaterial，andcentralpeak)andmorphometrie(diameter，depth，longitudeandlatitude)dataofthecratersintheIQ4area．TheresultsshowedthatthecratersintheLQ-4areacouldbecategorizedaccordingtotheirspatialdistribution，i．e．，thoseinlunarm

7、areareaandthoseinhighlandarea．Inthelunarhighlandarea，thecratersaremainlysmallormedium-sized，distributedwithhighdensityandinhomogeneous，andthoseinthelunarmareareaarefresh，withlargerdiameters，distributedwithlowdensity．Keywords：Chang’e-Isatellite；craters；morphologicalcharacterist

8、ics；distributioncharacteristics摘要：月球表面环形构造主要有撞击坑、火山口和月海穹窿3种，其