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American Geophysical Union, Journal of Geophysical Research: Planets, 2(121), p. 233-251, 2016

DOI: 10.1002/2015je004920

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Composition, seasonal change and bathymetry of Ligeia Mare, Titan, derived from its microwave thermal emission: Microwave Radiometry of Ligeia Mare

Journal article published in 2016 by Alice Le Gall, M. J. Malaska ORCID, R. D. Lorenz, M. A. Janssen, T. Tokano, A. G. Hayes, M. Mastrogiuseppe, J. I. Lunine, G. Veyssière, P. Encrenaz, O. Karatekin
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This paper is available in a repository.

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Abstract

For the last decade, the passive radiometer incorporated in the Cassini RADAR has recorded the 2.2 cm wavelength thermal emission from Titan's seas. In this paper, we analyze the radiometry observations collected from February 2007 to January 2015 over one of these seas, Ligeia Mare, with the goal of providing constraints on its composition, bathymetry, and dynamics. In light of the depth profile obtained by Mastrogiuseppe et al. (2014) and of a two-layer model, we find that the dielectric constant of the sea liquid is