Mathematics – Logic
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.p31c1543b&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #P31C-1543
Mathematics
Logic
[5410] Planetary Sciences: Solid Surface Planets / Composition, [5419] Planetary Sciences: Solid Surface Planets / Hydrology And Fluvial Processes, [5462] Planetary Sciences: Solid Surface Planets / Polar Regions, [6281] Planetary Sciences: Solar System Objects / Titan
Scientific paper
Near-infrared spectral mapping of Titan's north polar lake district from the Cassini Visual and Infrared Mapping Spectrometer (VIMS) during the T69 flyby (2010 June 5) shows numerous, isolated ice-free spectral units. Comparison of the spectral map to RADAR data reveals that many of these units sit at the bottom of empty lakes as identified by the RADAR team. Because not all lakes show the spectral signature, and because nearby terrains and channel beds do not show it either, we interpret these deposits to be evaporites. On Titan, these would form by dissolution of haze or surface material by liquid methane, which then flows into seas and precipitates the solutes out as the methane evaporates. Most of the available soluble chemicals in Titan's environment are organic, thus we expect that the composition of the evaporites is organic as well, though we are as yet unable to make a positive chemical identification. The presence of evaporitic deposits on Titan signifies a critical role for the methanological cycle in transporting and concentrating organic compounds, constrains the formation of Titan's lakes, and suggests that other areas with similar spectral character (Tui and Hotei Regios) could plausibly represent lakebeds as well. This is a combined RADAR and VIMS view of the area south of Ligeia Mare on Titan that is to be the subject of the talk. Here in HSV color space VIMS has been assigned hue and saturation, and RADAR is the value. The evaporitic areas appear orange in this view, and many (but not all ) correspond to steep-walled empty lakes as seen by RADAR.
Baines Kevin Hays
Barnes Jason W.
Bow Jacob
Brown Harvey R.
Buratti Bonnie Jean
No associations
LandOfFree
Cassini/VIMS Discovery of Organic Evaporite Deposits in Titan's Dry Lakebeds does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Cassini/VIMS Discovery of Organic Evaporite Deposits in Titan's Dry Lakebeds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cassini/VIMS Discovery of Organic Evaporite Deposits in Titan's Dry Lakebeds will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1496463