LUNINE, J.I.; ELACHI, C.; WALL, S. D.; ALLISON, M. D.; ANDERSON, Y.; BOEHMER, R.; CALLAHAN, P.; ENCRENAZ, P.; FLAMINI, E.; FRANCESCHETTI, G.; GIM, Y.; HAMILTON, G.; HENSLEY, S.; JANSSEN, M.; JOHNSON, W. T. K.; KELLEHER, K.; KIRK, R. L.; LOPES, R. M.; LORENZ, R.; MUHLEMAN, D. O.; OROSEI, R.; OSTRO, S. J.; PAGANELLI, F.; PAILLOU, Philippe; PICARDI, G.; POSA, F.; RADEBAUGH, J.; ROTH, L. E.; SEU, R.; SHAFFER, S.; SODERBLOM, L. A.; STILES, B.; STOFAN, E. R.; VETRELLA, S.; WEST, R.; WOOD, C. A.; WYE, L.; ZEBKER, H.; ALBERTI, Giovanni; KARKOSCHKA, E.; RIZK, B.; MCFARLANE, E.; SEE, C.; KAZEMINEJAD, B.

doi:10.1016/J.ICARUS.2007.12.022

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Licence d’utilisation du document

LUNINE, J.I.
Lunar and Planetary Laboratory [Tucson] [LPL]
Jet Propulsion Laboratory [JPL]
Istituto di Fisica dello Spazio Interplanetario [IFSI]

ELACHI, C.
Jet Propulsion Laboratory [JPL]

WALL, S. D.
Jet Propulsion Laboratory [JPL]

LUNINE, J.I.
Lunar and Planetary Laboratory [Tucson] [LPL]
Jet Propulsion Laboratory [JPL]
Istituto di Fisica dello Spazio Interplanetario [IFSI]

ELACHI, C.
Jet Propulsion Laboratory [JPL]

WALL, S. D.
Jet Propulsion Laboratory [JPL]

ALLISON, M. D.
NASA Goddard Institute for Space Studies [GISS]

ANDERSON, Y.
Jet Propulsion Laboratory [JPL]

BOEHMER, R.
Jet Propulsion Laboratory [JPL]

CALLAHAN, P.
Jet Propulsion Laboratory [JPL]

ENCRENAZ, P.
Observatoire de Paris - Site de Paris [OP]

FLAMINI, E.
Facoltá di Ingegneria

FRANCESCHETTI, G.
Facoltá di Ingegneria

GIM, Y.
Jet Propulsion Laboratory [JPL]

HAMILTON, G.
Jet Propulsion Laboratory [JPL]

HENSLEY, S.
Jet Propulsion Laboratory [JPL]

JANSSEN, M.
Jet Propulsion Laboratory [JPL]

JOHNSON, W. T. K.
Jet Propulsion Laboratory [JPL]

KELLEHER, K.
Jet Propulsion Laboratory [JPL]

KIRK, R. L.
US Geological Survey [Flagstaff] [USGS]

LOPES, R. M.
Jet Propulsion Laboratory [JPL]

LORENZ, R.
Lunar and Planetary Laboratory [Tucson] [LPL]

MUHLEMAN, D. O.
Caltech Division of Geological and Planetary Sciences

OROSEI, R.
Istituto di Astrofisica Spaziale e Fisica cosmica - Roma [IASF-Roma]

OSTRO, S. J.
Jet Propulsion Laboratory [JPL]

PAGANELLI, F.
Jet Propulsion Laboratory [JPL]

PAILLOU, Philippe
Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]

PICARDI, G.
Università degli Studi di Roma "La Sapienza" = Sapienza University [Rome] [UNIROMA]

POSA, F.
Dipartimento Interateneo di Fisica

RADEBAUGH, J.
Lunar and Planetary Laboratory [Tucson] [LPL]

ROTH, L. E.
Jet Propulsion Laboratory [JPL]

SEU, R.
Università degli Studi di Roma "La Sapienza" = Sapienza University [Rome] [UNIROMA]

SHAFFER, S.
Jet Propulsion Laboratory [JPL]

SODERBLOM, L. A.
US Geological Survey [Flagstaff] [USGS]

STILES, B.
Jet Propulsion Laboratory [JPL]

STOFAN, E. R.
Proxemy Research Inc

VETRELLA, S.
Facoltá di Ingegneria

WEST, R.
Jet Propulsion Laboratory [JPL]

WOOD, C. A.
Planetary Science Institute [Tucson] [PSI]

WYE, L.
Stanford University

ZEBKER, H.
Department of Electrical Engineering [Stanford]

ALBERTI, Giovanni
CO.RI.S.T.A.

KARKOSCHKA, E.
Lunar and Planetary Laboratory [Tucson] [LPL]

RIZK, B.
Lunar and Planetary Laboratory [Tucson] [LPL]

MCFARLANE, E.
Lunar and Planetary Laboratory [Tucson] [LPL]

SEE, C.
Lunar and Planetary Laboratory [Tucson] [LPL]

KAZEMINEJAD, B.
European Space Department

< Réduire

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Ce document a été publié dans

Icarus. 2008, vol. 195, n° 1, p. 415-433

Elsevier

Résumé en anglais

Cassini's third and fourth radar flybys, T7 and T8, covered diverse terrains in the high southern and equatorial latitudes, respectively. The T7 synthetic aperture radar (SAR) swath is somewhat more straightforward to understand in terms of a progressive poleward descent from a high, dissected, and partly hilly terrain down to a low flat plain with embayments and deposits suggestive of the past or even current presence of hydrocarbon liquids. The T8 swath is dominated by dunes likely made of organic solids, but also contain somewhat enigmatic, probably tectonic, features that may be partly buried or degraded by erosion or relaxation in a thin crust. The dark areas in T7 show no dune morphology, unlike the dark areas in T8, but are radiometrically warm like the dunes. The Huygens landing site lies on the edge of the T8 swath; correlation of the radar and Huygens DISR images allows accurate determination of its coordinates, and indicates that to the north of the landing site sit two large longitudinal dunes. Indeed, had the Huygens probe trajectory been just 10 km north of where it actually was, images of large sand dunes would have been returned in place of the fluvially dissected terrain actually seen?illustrating the strong diversity of Titan's landscapes even at local scales.< Réduire

Mots clés en anglais

Titan

Radar observations

Satellites

surfaces

Geological processes

Geophysics

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Titan's diverse landscapes as evidenced by Cassini RADAR's third and fourth looks at Titan

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Mots clés en anglais

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