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Communication Dans Un Congrès Année : 2023

The chemical composition of the Soi crater region on Titan.

Résumé

The Soi crater region, with the well-preserved Soi crater in its center, covers almost 10% of Titan’s surface. Schoenfeld et al. (2023) [1] mapped this region at 1:800,000 scale and produced a geomorphological map showing that the area consists of 22 distinct geomorphological units. The region includes the boundaries between the equatorial regions of Titan and the mid-latitudes and extends into the high northern latitudes (above 50o). We analyzed 262 different locations from several Visual and Infrared Mapping Spectrometer (VIMS) datacubes using a radiative transfer technique [2] and a mixing model [3], yielding compositional constraints on Titan’s optical surface layer and near-surface substrate compositional constraints using RADAR microwave emissivity. We have derived combinations of top surface materials between dark materials, tholin-like materials, water-ice, and methane. We found no evidence of CO2 and NH3 ice. We discuss our results in terms of origin and evolution theories.
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Dates et versions

insu-04489187 , version 1 (04-03-2024)

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Anezina Solomonidou, Michael Malaska, Rosaly Lopes, Athena Coustenis, Ashley Schoenfeld, et al.. The chemical composition of the Soi crater region on Titan.. EGU23, the 25th EGU General Assembly, Apr 2023, Vienna, Austria. pp.EGU23-6487, ⟨10.5194/egusphere-egu23-6487⟩. ⟨insu-04489187⟩
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