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Surface albedo spectral properties of geologically interesting areas on Titan

hal.structure.identifierJet Propulsion Laboratory [JPL]
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
dc.contributor.authorSOLOMONIDOU, A.
hal.structure.identifierLaboratoire de Planétologie et Géodynamique [UMR 6112] [LPG]
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
dc.contributor.authorHIRTZIG, M.
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
dc.contributor.authorCOUSTENIS, A.
hal.structure.identifierLaboratoire Traitement et Communication de l'Information [LTCI]
dc.contributor.authorBRATSOLIS, E.
hal.structure.identifierLaboratoire de Planétologie et Géodynamique [UMR 6112] [LPG]
dc.contributor.authorLE MOUÉLIC, S.
hal.structure.identifierLaboratoire de Planétologie et Géodynamique [UMR 6112] [LPG]
dc.contributor.authorRODRIGUEZ, Sébastien
dc.contributor.authorSTEPHAN, K.
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
dc.contributor.authorDROSSART, P.
hal.structure.identifierLaboratoire de Planétologie et Géodynamique [UMR 6112] [LPG]
dc.contributor.authorSOTIN, C.
dc.contributor.authorJAUMANN, R.
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorBROWN, R.
dc.contributor.authorKYRIAKOPOULOS, K.
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorLOPES, R.
hal.structure.identifierNational and Kapodistrian University of Athens [NKUA]
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique [LESIA]
dc.contributor.authorBAMPASIDIS, G.
dc.contributor.authorSTAMATELOPOULOU-SEYMOUR, K.
hal.structure.identifierDepartment of Physics [Athens]
dc.contributor.authorMOUSSAS, X.
dc.date.issued2014-08
dc.identifier.issn2169-9097
dc.description.abstractEnWe investigate the nature and possible formation processes of three areas on Titan's surface which have been suggested as geologically interesting: Hotei Regio, Tui Regio, and Sotra Patera. We also reanalyze the spectral characteristics of the Huygens Landing Site. We apply a statistical Principal Component Analysis (PCA) and a radiative transfer (RT) method on the Visual and Infrared Mapping Spectrometer Datacubes in order to retrieve the surface albedo of distinct spectral units in the near infrared. We have been able to exploit only a subset of the currently available Hotei Regio data, which are, in general, not optimal in terms of geometry for an analysis with a plane-parallel RT code. Our inferred surface albedos present generally higher values from 1 to 2 μm and lower ones at 0.94 and in the 2.6-5 μm region. The Regions of Interest (RoIs) within Hotei Regio, Tui Regio, and Sotra Patera are always significantly brighter than the surrounding areas. The largest variations are found longward of 2 μm and mainly at 5 μm. This higher surface albedo with respect to the surrounding area and, in general, the fact that the spectral behavior is different for each of these areas, is probably indicative of diverse chemical compositions and origins. We compare the spectral albedos with some suggested surface candidates on Titan (such as H 2 O, CO 2 , and CH 4 ices, as well as tholin) and discuss possible chemical composition variations as well as other interpretations.
dc.language.isoen
dc.publisherWiley-Blackwell
dc.rights.urihttp://hal.archives-ouvertes.fr/licences/copyright/
dc.title.enSurface albedo spectral properties of geologically interesting areas on Titan
dc.typeArticle de revue
dc.identifier.doi10.1002/2014JE004634
dc.subject.halPhysique [physics]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]
bordeaux.journalJournal of Geophysical Research. Planets
bordeaux.page1729-1747
bordeaux.volume119
bordeaux.issue8
bordeaux.peerReviewedoui
hal.identifierhal-02544482
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02544482v1
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