10 years of observation of Titans lakes with the Cassini RADAR RadiometerReport as inadecuate

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1 IMPEC - LATMOS LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales 2 JPL - Jet Propulsion Laboratory 3 LERMA - Laboratoire d-Etude du Rayonnement et de la Matière en Astrophysique 4 Department of Astronomy Ithaca 5 APL - Johns Hopkins University Applied Physics Laboratory Laurel, MD

Abstract : Since 2004, the Cassini RADAR Mapper has been exploring at a wavelength of 2.2-cm Saturn-s moon Titan, the only planetary body besides Earth whose surface presently exhibits significant accumulations of liquids in the forms of lakes and seas. In its passive, or radiometry; mode of operation, the Cassini RADAR Radiometer measures the microwave thermal emission from the surface. Doing so, it provides unique insight into properties such as physical temperature, overall composition and structure roughness, heterogeneity…. To date, the Cassini Radiometer has mapped almost the whole surface of Titan. In this paper, we review the radiometry data acquired over Titan-s lakes searching for new constraints on their composition, bed depth and potential regional and seasonal variations.

Author: Alice Le Gall - Michael A. Janssen - Gaëlle Veyssière - Pierre Encrenaz - Jonathan I. Lunine - Alexander G. Hayes - Ralph D. Lo

Source: https://hal.archives-ouvertes.fr/


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