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1、Icarus225(2013)367–377ContentslistsavailableatSciVerseScienceDirectIcarusjournalhomepage:www.elsevier.com/locate/icarusAglobaltopographicmapofTitana,⇑bcdeRalphD.Lorenz,BryanW.Stiles,OdedAharonson,AntoineLucas,AlexanderG.Hayes,fgahiRandolphL.Kirk,HowardA.Ze
2、bker,ElizabethP.Turtle,CatherineD.Neish,EllenR.Stofan,jJasonW.Barnes,theCassiniRADARTeamaSpaceDepartment,JohnsHopkinsUniversityAppliedPhysicsLaboratory,11100JohnsHopkinsRoad,Laurel,MD20723,USAbJetPropulsionLaboratory,CaliforniaInstituteofTechnology,Pasaden
3、a,CA91109,USAcHelenKimmelCenterforPlanetaryScience,WeizmannInstituteofScience,Rehovot76100,IsraeldLaboratoireAIM,UniversitéParis7/CNRS/CEA,91191GifsurYvetteCedex,FranceeCornellUniversity,Ithaca,NY14853,USAfU.S.GeologicalSurvey,Flagstaff,AZ86001,USAgDepartm
4、entofElectricalEngineering,StanfordUniversity,Stanford,CA94305,USAhGoddardSpaceFlightCenter,Greenbelt,MD20771,USAiProxemyResearch,Rectortown,VA20140,USAjUniversityofIdaho,Moscow,ID83844,USAarticleinfoabstractArticlehistory:CassiniRADARSARtopoandaltimetryda
5、taareusedtoconstructaglobalgridded11°elevationmap,Received29January2013foruseinGlobalCirculationModels,hydrologicalmodelsandcorrelativestudies.Thedataaresparse,andRevised27March2013somostofthemapdomain(90%)ispopulatedwithinterpolatedvaluesusingasplinealg
6、orithm.TheAccepted2April2013highest(+520m)griddedpointobservedisat48°S,12°W.Thelowestpointobserved(1700mbelowAvailableonline18April2013a2575kmsphere)isat59°S,317°W:thismaybeabasinwhereliquidspresentlyinthenorthcouldhaveresidedinthepast.Ifthedeepestpointw
7、ereonceaseawiththearealextentofpresent-dayLigeiaMare,Keywords:itwouldbe1000mdeep.Wefindfourprominenttopographicrises,each200kmwide,radar-brightTitanandheavilydissected,distributedovera3000kmarcinthesoutheasternquadrantofTitan(40–60°S,Geologicalprocesses
8、15–150°W).Ó2013ElsevierInc.Allrightsreserved.1.Introductionslopesoftheorderof1/200,butblockedbyslopesof1/50ormore.ItisthereforeapitythatourknowledgeofTitan’stopographyisManygeological,hydrologicalandmeteorolo
