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Titan's inventory of organic surface materials

hal.structure.identifierJohns Hopkins University Applied Physics Laboratory [Laurel, MD] [APL]
dc.contributor.authorLORENZ, Ralph D.
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorMITCHELL, Karl L.
hal.structure.identifierUS Geological Survey [Flagstaff]
dc.contributor.authorKIRK, Randolph L.
hal.structure.identifierDivision of Geological and Planetary Sciences [Pasadena]
dc.contributor.authorHAYES, Alexander G.
hal.structure.identifierDivision of Geological and Planetary Sciences [Pasadena]
dc.contributor.authorAHARONSON, Oded
hal.structure.identifierDepartment of Electrical Engineering [Stanford]
dc.contributor.authorZEBKER, Howard A.
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
dc.contributor.authorPAILLOU, Philippe
hal.structure.identifierDepartment of Geological Sciences [BYU]
dc.contributor.authorRADEBAUGH, Jani
hal.structure.identifierLunar and Planetary Laboratory [Tucson] [LPL]
dc.contributor.authorLUNINE, Jonathan I.
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorJANSSEN, Michael A.
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorWALL, Stephen D.
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorLOPES, Rosaly M.
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorSTILES, Bryan
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorOSTRO, Steve
hal.structure.identifierJet Propulsion Laboratory [JPL]
dc.contributor.authorMITRI, Giuseppe
hal.structure.identifierProxemy Research Inc
dc.contributor.authorSTOFAN, Ellen R.
dc.date.issued2008
dc.identifier.issn0094-8276
dc.description.abstractEnCassini RADAR observations now permit an initial assessment of the inventory of two classes, presumed to be organic, of Titan surface materials: polar lake liquids and equatorial dune sands. Several hundred lakes or seas have been observed, of which dozens are each estimated to contain more hydrocarbon liquid than the entire known oil and gas reserves on Earth. Dark dunes cover some 20% of Titan's surface, and comprise a volume of material several hundred times larger than Earth's coal reserves. Overall, however, the identified surface inventories (>3 × 104 km3 of liquid, and >2 × 105 km3 of dune sands) are small compared with estimated photochemical production on Titan over the age of the solar system. The sand volume is too large to be accounted for simply by erosion in observed river channels or ejecta from observed impact craters. The lakes are adequate in extent to buffer atmospheric methane against photolysis in the short term, but do not contain enough methane to sustain the atmosphere over geologic time. Unless frequent resupply from the interior buffers this greenhouse gas at exactly the right rate, dramatic climate change on Titan is likely in its past, present and future.
dc.language.isoen
dc.publisherAmerican Geophysical Union
dc.subject.enPlanetary Sciences: Solar System Objects: Titan
dc.subject.enPlanetary Sciences: Solid Surface Planets: Surface materials and properties
dc.subject.enPlanetary Sciences: Solid Surface Planets: Remote sensing
dc.subject.enPlanetary Sciences: Solid Surface Planets: Atmospheres (0343
dc.subject.en1060)
dc.title.enTitan's inventory of organic surface materials
dc.typeArticle de revue
dc.identifier.doi10.1029/2007GL032118
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.journalGeophysical Research Letters
bordeaux.page02206
bordeaux.volume35
bordeaux.peerReviewedoui
hal.identifierhal-00261487
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00261487v1
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