On Titan's Xanadu region

Robert H. Brown, Jason W. Barnes, H. Jay Melosh

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A large, circular marking ∼1800 km across is seen in near-infrared images of Titan. The feature is centered at 10°S, 120°W on Titan, encompasses much of Titan's western Xanadu region, and has an off-center, quasi-circular, inner margin about 700 km across, with lobate outer margins extending 200-500 km from the inner margin. On the feature's southern flank is Tui Regio, an area that has very high reflectivity at 5. μm, and is hypothesized to exhibit geologically recent cryovolcanic flows (Barnes, J.W. et al. [2006]. Geophys. Res. Lett. 33), similar to flows seen in Hotei Regio, a cryovolcanic area whose morphology may be controlled by pre-existing, crustal fractures resulting from an ancient impact (Soderblom, L.A. et al. [2009]. Icarus, 204). The spectral reflectivity of the large, circular feature is quite different than that of its surroundings, making it compositionally distinct, and radar measurements of its topography, brightness temperature and volume scattering also suggest that the feature is quite distinct from its surroundings. These and several other lines of evidence, in addition to the feature's morphology, suggest that it may occupy the site of an ancient impact.

Original languageEnglish (US)
Pages (from-to)556-560
Number of pages5
JournalIcarus
Volume214
Issue number2
DOIs
StatePublished - Aug 2011

Fingerprint

Titan
margins
reflectivity
crustal fractures
reflectance
radar measurement
brightness temperature
marking
near infrared
topography
scattering
radar

Keywords

  • Cratering
  • Titan, surface

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Brown, R. H., Barnes, J. W., & Melosh, H. J. (2011). On Titan's Xanadu region. Icarus, 214(2), 556-560. https://doi.org/10.1016/j.icarus.2011.03.018

On Titan's Xanadu region. / Brown, Robert H.; Barnes, Jason W.; Melosh, H. Jay.

In: Icarus, Vol. 214, No. 2, 08.2011, p. 556-560.

Research output: Contribution to journalArticle

Brown, RH, Barnes, JW & Melosh, HJ 2011, 'On Titan's Xanadu region', Icarus, vol. 214, no. 2, pp. 556-560. https://doi.org/10.1016/j.icarus.2011.03.018
Brown, Robert H. ; Barnes, Jason W. ; Melosh, H. Jay. / On Titan's Xanadu region. In: Icarus. 2011 ; Vol. 214, No. 2. pp. 556-560.
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