Titan's topography, strange.... |
Titan's topography, strange.... |
Apr 12 2009, 12:44 PM
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#1
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Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
Recent article in Science by Zebker et al.:
Zebker et al. Science in press, "Size and Shape of Saturn's Moon Titan". doi: 10.1126/science.1168905 (published online April 2, 2009) Link to abstract (pay-for article): http://www.sciencemag.org/cgi/content/abstract/1168905 Article on spaceref discusses this paper: http://www.spaceref.com/news/viewpr.html?pid=27912 Figure 3 from the Science article is a global elevation map relative to barycenter. Key points of article:
"Xanadu seems to be systematically lower than other parts of the equatorial belt, and not uplifted like most mountainous areas on Earth." (quote from Fig. 3 caption in article) -Mike -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Apr 12 2009, 08:44 PM
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Member Group: Members Posts: 276 Joined: 11-December 07 From: Dar es Salaam, Tanzania Member No.: 3978 |
Forgive my ignorance ngunn but exactly what was that observational evidence that indicates light and porous material in Xanadu?
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Apr 15 2009, 03:31 AM
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Member Group: Members Posts: 613 Joined: 23-February 07 From: Occasionally in Columbia, MD Member No.: 1764 |
Forgive my ignorance ngunn but exactly what was that observational evidence that indicates light and porous material in Xanadu? As another post noted, Xanadu has very peculiar dielectric properties - its radar echo is quite depolarized, suggestive of porosity (see the Janssen paper) There is also the result published by Buratti et al of the VIMS team suggesting that the near-IR phase function of Xanadu suggests rougher material (at the microscale, IIRC) |
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