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Mapping and interpretation of Sinlap crater on Titan using Cassini VIMS and RADAR data

hal.structure.identifierLaboratoire de Planétologie et Géodynamique [UMR 6112] [LPG]
dc.contributor.authorLE MOUÉLIC, Stéphane
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorPAILLOU, Philippe
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorJANSSEN, M.
hal.structure.identifierNASA Ames Research Center [ARC]
dc.contributor.authorW. BARNES, Jason
hal.structure.identifierDépartement d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée [DAPNIA]
dc.contributor.authorRODRIGUEZ, S.
hal.structure.identifierLaboratoire de Planétologie et Géodynamique [UMR 6112] [LPG]
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorSOTIN, C.
hal.structure.identifierLunar and Planetary Laboratory [Tucson] [LPL]
dc.contributor.authorBROWN, R. H.
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorH. BAINES, Kevin
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorBURATTI, B.
hal.structure.identifierUS Geological Survey [Denver]
dc.contributor.authorCLARK, R.
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorCRAPEAU, M.
hal.structure.identifierObservatoire de Paris - Site de Meudon [OBSPM]
dc.contributor.authorENCRENAZ, P.
hal.structure.identifierDLR Institute of Planetary Research
dc.contributor.authorJAUMANN, Ralf
hal.structure.identifierDLR Microwaves and Radar Institute
dc.contributor.authorGEUDTNER, Dirk
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorPAGANELLI, F.
hal.structure.identifierUS Geological Survey [Flagstaff]
dc.contributor.authorSODERBLOM, L.
hal.structure.identifierLaboratoire de Planétologie et Géodynamique [UMR 6112] [LPG]
dc.contributor.authorTOBIE, Gabriel
hal.structure.identifierLaboratoire de Planétologie et Géodynamique [UMR 6112] [LPG]
dc.contributor.authorWALL, S.
dc.date.issued2008
dc.identifier.issn2169-9097
dc.description.abstractEnOnly a few impact craters have been unambiguously detected on Titan by the Cassini- Huygens mission. Among these, Sinlap is the only one that has been observed both by the RADAR and VIMS instruments. This paper describes observations at centimeter and infrared wavelengths which provide complementary information about the composition, 45 topography, and surface roughness. Several units appear in VIMS false color composites of band ratios in the Sinlap area, suggesting compositional heterogeneities. A bright pixel possibly related to a central peak does not show significant spectral variations, indicating either that the impact site was vertically homogeneous, or that this area has been recovered by homogeneous deposits. Both 50 VIMS ratio images and dielectric constant measurements suggest the presence of an area enriched in water ice around the main ejecta blanket. Since the Ku-band SAR may see subsurface structures at the meter scale, the difference between infrared and SAR observations can be explained by the presence of a thin layer transparent to the radar. An analogy with terrestrial craters in Libya supports this interpretation. Finally, a tentative model describes the geological 55 history of this area prior, during, and after the impact. It involves mainly the creation of ballistic ejecta and an expanding plume of vapor triggered by the impact, followed by the redeposition of icy spherules recondensed from this vapor plume blown downwind. Subsequent evolution is then driven by erosional processes and aeolian deposition.
dc.language.isoen
dc.publisherWiley-Blackwell
dc.title.enMapping and interpretation of Sinlap crater on Titan using Cassini VIMS and RADAR data
dc.typeArticle de revue
dc.identifier.doi10.1029/2007JE002965
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]
bordeaux.journalJournal of Geophysical Research. Planets
bordeaux.page11304003L
bordeaux.volume113
bordeaux.issue4
bordeaux.peerReviewedoui
hal.identifierhal-00261442
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00261442v1
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