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Journal Articles Planetary Science Year : 2013

Precipitation-induced surface brightenings seen on Titan by Cassini VIMS and ISS

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Jason Barnes
Bonnie Buratti
Jacob Bow
  • Function : Author
Paul Dalba
  • Function : Author
Jason Perry
Robert Brown
Kevin Baines
Michael Malaska
Thomas Mccord
  • Function : Author
Roger Clark
Paul Hayne
  • Function : Author
Philip Nicholson
Jason Soderblom
Laurence Soderblom
  • Function : Author

Abstract

Observations from Cassini VIMS and ISS show localized but extensive surface brightenings in the wake of the 2010 September cloudburst. Four separate areas, all at similar latitude, show similar changes: Yalaing Terra, Hetpet Regio, Concordia Regio, and Adiri. Our analysis shows a general pattern to the time-sequence of surface changes: after the cloudburst the areas darken for months, then brighten for a year before reverting to their original spectrum. From the rapid reversion timescale we infer that the process driving the brightening owes to a fine-grained solidified surface layer. The specific chemical composition of such solid layer remains unknown. Evaporative cooling of wetted terrain may play a role in the generation of the layer, or it may result from a physical grain-sorting process.
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Dates and versions

hal-03657806 , version 1 (03-05-2022)

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Jason Barnes, Bonnie Buratti, Elizabeth Turtle, Jacob Bow, Paul Dalba, et al.. Precipitation-induced surface brightenings seen on Titan by Cassini VIMS and ISS. Planetary Science, 2013, 2 (1), pp.1. ⟨10.1186/2191-2521-2-1⟩. ⟨hal-03657806⟩
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