The Sand Seas of Titan: Cassini RADAR Observations of Longitudinal Dunes

@article{Lorenz2006TheSS,
  title={The Sand Seas of Titan: Cassini RADAR Observations of Longitudinal Dunes},
  author={Ralph D. Lorenz and Stephen D. Wall and Jani Radebaugh and G. M. Boubin and E. G. Reffet and Michael A. Janssen and Ellen R. Stofan and R. M. C. Lopes and Randolph L. Kirk and Charles Elachi and Jonathan I. Lunine and Karl Mitchell and Federica Paganelli and Laurence A. Soderblom and Charles A. Wood and Lauren C. Wye and Howard A. Zebker and Yanhua Anderson and Steven Jeffrey Ostro and M. Allison and R. A. Boehmer and Philip S. Callahan and Pierre J. Encrenaz and Gian Gabriele Ori and G. Francescetti and Yonggyu Gim and Gary Hamilton and Scott Hensley and William T. K. Johnson and K. D. Kelleher and Duane O. Muhleman and Giovanni Picardi and Francesco Posa and L. E. Roth and Roberto Seu and Scott J. Shaffer and Bryan W. Stiles and Sergio Vetrella and Enrico Flamini and Robert A. West},
  journal={Science},
  year={2006},
  volume={312},
  pages={724 - 727}
}
The most recent Cassini RADAR images of Titan show widespread regions (up to 1500 kilometers by 200 kilometers) of near-parallel radar-dark linear features that appear to be seas of longitudinal dunes similar to those seen in the Namib desert on Earth. The Ku-band (2.17-centimeter wavelength) images show ∼100-meter ridges consistent with duneforms and reveal flow interactions with underlying hills. The distribution and orientation of the dunes support a model of fluctuating surface winds of ∼0… 

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  • R. Lorenz
  • Environmental Science, Geology
    Science
  • 2010
A new model by Tokano (3) may have found the resolution: Although the winds are usually easterlies, there is a blast of wind from the west for a brief interval around each equinox, and it is these stronger winds that dominate the dune orientation.
...

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