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Detailed chemical c...
Detailed chemical composition analysis of the Soi crater region on Titan
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- Solomonidou, A. (författare)
- Hellenic Space Center, Athens, Greece.; LESIA–Observatoire de Paris, CNRS, UPMC Univ. Paris 06, Univ. Paris-Diderot, Meudon, France.
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- Malaska, M. J. (författare)
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA.
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- Lopes, R. M.C. (författare)
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA.
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- Coustenis, A. (författare)
- LESIA–Observatoire de Paris, CNRS, UPMC Univ. Paris 06, Univ. Paris-Diderot, Meudon, France.
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- Schoenfeld, A. M. (författare)
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA.
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- Schmitt, B. (författare)
- Institut de Planétologie et d'’Astrophysique de Grenoble, Université Grenoble Alpes, CNRS, Grenoble, France.
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- Birch, S. P.D. (författare)
- Department of Earth, Atmospheric, and Planetary Science, Massachusetts Institute of Technology, Cambridge, MA, USA.
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- Le Gall, A. (författare)
- Institut LATMOS/IPSL, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, France.; Institut Universitaire de France, Paris, France.
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- Lawrence, K. (författare)
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA.
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- Matsoukas, Christos (författare)
- KTH,Beräkningsvetenskap och beräkningsteknik (CST)
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- Wall, S. D. (författare)
- California Institute of Technology, Pasadena, CA, USA.
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- Elachi, C. (författare)
- California Institute of Technology, Pasadena, CA, USA.
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Hellenic Space Center, Athens, Greece; LESIA–Observatoire de Paris, CNRS, UPMC Univ. Paris 06, Univ. Paris-Diderot, Meudon, France. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA. (creator_code:org_t)
- Elsevier BV, 2024
- 2024
- Engelska.
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Ingår i: Icarus. - : Elsevier BV. - 0019-1035 .- 1090-2643. ; 421
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The Soi crater region (0° to 60°N, 180°W to −110°W), which includes the well-preserved Soi crater in its center, spans a region from Titan's aeolian-dominated equatorial regions to fluvially-dominated high northern latitudes. This provides a rich diversity of landscapes, one that is also representative of the diversity encountered across Titan. Schoenfeld et al. (2023) mapped this region at 1:800,000 scale and produced a geomorphological map showing that the area consists of 22 types of geomorphological units. The Visual and Infrared Mapping Spectrometer (VIMS) coverage of the region enabled the detailed analysis of spectra of 261 different locations using a radiative transfer technique and a mixing model, yielding compositional constraints on Titan's optical surface layer. Additional constraints on composition on the near-surface substrate were obtained from microwave emissivity. We have derived combinations of top surface materials between dark materials, tholins, water-ice, and methane suggesting that dark mobile organic material at equatorial and high latitudes indicates “young” terrains and compositions, while tholin/water-ice mixtures that dominate areas around latitude 35°N show a material that is older plains deposits that we interpret to be the end stage of aeolian and fluvial transport and deposition. We found no spectral evidence of CO2, HC3N, and NH3 ice. We use the stratigraphic relations between the various mapping units and the relation between the geomorphology and the composition of the surface layers to build hypotheses on the origin and evolution of the regional geology. We suggest that sedimentary deposits, likely aeolian, are dominant in the region with fluvial activity and leaching changing the nature of the top surfaces of the midlatitude areas of the Soi crater region.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geology (hsv//eng)
Nyckelord
- Icy satellites
- Ocean worlds
- Radiative transfer
- Surface composition
- Titan
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Solomonidou, A.
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Malaska, M. J.
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Lopes, R. M.C.
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Coustenis, A.
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Schoenfeld, A. M ...
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Schmitt, B.
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Birch, S. P.D.
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Le Gall, A.
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Lawrence, K.
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Matsoukas, Chris ...
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Wall, S. D.
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Elachi, C.
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