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Active shoreline of Ontario Lacus, Titan: A morphological study of the lake and its surroundings

Wall, S. and Hayes, A. and Bristow, C. and Lorenz, R. and Stofan, E. and Lunine, J. and Le Gall, A. and Janssen, M. A. and Lopes, R. and Wye, L. and Soderblom, L. and Paillou, P. and Aharonson, O. and Zebker, H. and Farr, T. and Mitri, G. and Kirk, R. and Mitchell, K. and Notarnicola, C. and Casarano, D. and Ventura, B. (2010) Active shoreline of Ontario Lacus, Titan: A morphological study of the lake and its surroundings. Geophysical Research Letters, 37 (5). L05202. ISSN 0094-8276.

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Of more than 400 filled lakes now identified on Titan, the first and largest reported in the southern latitudes is Ontario Lacus, which is dark in both infrared and microwave. Here we describe recent observations including synthetic aperture radar (SAR) images by Cassini's radar instrument (λ = 2 cm) and show morphological evidence for active material transport and erosion. Ontario Lacus lies in a shallow depression, with greater relief on the southwestern shore and a gently sloping, possibly wave-generated beach to the northeast. The lake has a closed internal drainage system fed by Earth-like rivers, deltas and alluvial fans. Evidence for active shoreline processes, including the wave-modified lakefront and deltaic deposition, indicates that Ontario is a dynamic feature undergoing typical terrestrial forms of littoral modification.

Item Type:Article
Related URLs:
URLURL TypeDescription
Janssen, M. A.0000-0001-5476-731X
Soderblom, L.0000-0002-0917-853X
Aharonson, O.0000-0001-9930-2495
Mitri, G.0000-0001-8390-458X
Kirk, R.0000-0003-0842-9226
Additional Information:© 2010 American Geophysical Union. Received 19 November 2009; accepted 14 January 2010; published 6 March 2010. We acknowledge contributions made by the Cassini RADAR Instrument Development Teams, both at Alenia Aerospazio and at JPL; the RADAR Instrument Operations Team; and the Cassini Project spacecraft development and operations teams. The Cassini Program is a joint venture of the National Aeronautics and Space Administration (NASA), the Italian Space Agency (ASI), and the European Space Agency (ESA). J.L. was funded in part by the program ‘Incentivazione alla mobilità di studiosi stranieri e italiani residenti all’estero’ of Italy. Portions of this work were performed at Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA.
Funding AgencyGrant Number
Incentivazione alla mobilità di studiosi stranieri e italiani residenti all’esteroUNSPECIFIED
Subject Keywords:Titan
Issue or Number:5
Record Number:CaltechAUTHORS:20100324-111400821
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Official Citation:Wall, S., et al. (2010), Active shoreline of Ontario Lacus, Titan: A morphological study of the lake and its surroundings, Geophys. Res. Lett., 37, L05202, doi:10.1029/2009GL041821.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:17792
Deposited By: Jason Perez
Deposited On:30 Mar 2010 22:51
Last Modified:09 Mar 2020 13:19

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