Composition of Titan's surface from Cassini VIMS

McCord, T. B.; Hansen, G. B.; Buratti, B. J.; Clark, R. N.; Cruikshank, D. P.; D’Aversa, E.; Griffith, C. A.; Baines, Ellyn K.; Brown, R. H.; Ore, C. M. Dalle; Filacchione, G.; Formisano, V.; Hibbitts, C. A.; Jaumann, R.; Lunine, Jonathan I.; Nelson, Robert M.; Sotin, C.

doi:10.1016/j.pss.2006.06.007

Cited by 95 publications

(91 citation statements)

References 30 publications

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“…Observations by Cassini VIMS-combined with RADAR and DISR measurementsconfirm earlier results, and also show compositional differences between surface geologic units (McCord et al 2006;, Soderblom et al 2007). Titan's surface can be divided into two main units: infrared (and radar) "bright" and "dark".…”

Section: Cassini Observations Of Titan's Surfacesupporting

confidence: 77%

Chemical Composition of Icy Satellite Surfaces

et al. 2010

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Much of our knowledge of planetary surface composition is derived from remote sensing over the ultraviolet through infrared wavelength ranges. Telescopic observations and, in the past few decades, spacecraft mission observations have led to the discovery of many surface materials, from rock-forming minerals to water ice to exotic volatiles and organic compounds. Identifying surface materials and mapping their distributions allows us to constrain interior processes such as cryovolcanism and aqueous geochemistry.The recent progress in understanding of icy satellite surface composition has been aided by the evolving capabilities of spacecraft missions, advances in detector technology, and laboratory studies of candidate surface compounds. Pioneers 10 and 11, Voyagers I and II, Galileo, Cassini and the New Horizons mission have all made significant contributions. Dalton (Space Sci. Rev., 2010, this issue) summarizes the major constituents found or inferred to exist on the surfaces of the icy satellites (cf. Table 1 from Dalton, Space Sci. Rev., 2010, this issue), and the spectral coverage and resolution of many of the spacecraft instruments that have revolutionized our understanding (cf. Table 2 from Dalton, Space Sci. Rev., A. Coustenis Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Observatoire de Paris-Meudon, 5, pl. Jules Janssen,

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Section: Cassini Observations Of Titan's Surfacesupporting

confidence: 77%

Chemical Composition of Icy Satellite Surfaces

et al. 2010

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“…Cassini mission [36][37][38], and its spectrum is consistent with either very low or zero water-ice content. Its specific nature as dry lakebeds of evaporite, however, was only recently proposed [11].…”

Section: Yalaing Terramentioning

confidence: 80%

Precipitation-induced surface brightenings seen on Titan by Cassini VIMS and ISS

et al. 2013

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Observations from Cassini VIMS and ISS show localized but extensive surface brightenings in the wake of the 2010 September cloudburst. Four separate areas, all at similar latitude, show similar changes: Yalaing Terra, Hetpet Regio, Concordia Regio, and Adiri. Our analysis shows a general pattern to the time-sequence of surface changes: after the cloudburst the areas darken for months, then brighten for a year before reverting to their original spectrum. From the rapid reversion timescale we infer that the process driving the brightening owes to a fine-grained solidified surface layer. The specific chemical composition of such solid layer remains unknown. Evaporative cooling of wetted terrain may play a role in the generation of the layer, or it may result from a physical grain-sorting process.

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“…Barnes et al (2005) speculated that the materials in Hotei Regio and Tui Regio could be eroded layers or recent deposits of CO 2 . McCord et al (2006McCord et al ( , 2008 described VIMS spectroscopic evidence for CO 2 . They noted that in the VIMS data, in addition to being bright at 5 lm, these features exhibit excess brightness at 2.8 lm (particularly when compared to their average brightness at 2.7 lm) and a spectral absorption feature at 4.92 lm, all of which might be attributed to fine-grained CO 2 ice.…”

Section: Introductionmentioning

confidence: 99%