Publication Abstracts

Radebaugh et al. 2008

Radebaugh, J., R.D. Lorenz, J.I. Lunine, S.D. Wall, G. Boubin, E. Reffet, R.L. Kirk, R.M. Lopes, E.R. Stofan, L. Soderblom, M. Allison, M. Janssen, P. Paillou, P. Callahan, C. Spencer, and Cassini Radar Team, 2008: Dunes on Titan observed by Cassini Radar. Icarus, 194, 690-703, doi:10.1016/j.icarus.2007.10.015.

Thousands of longitudinal dunes have recently been discovered by the Titan Radar Mapper on the surface of Titan. These are found mainly within ±30° of the equator in optically-, near-infrared-, and radar-dark regions, indicating a strong proportion of organics, and cover well over 5% of Titan's surface. Their longitudinal duneform, interactions with topography, and correlation with other aeolian forms indicate a single, dominant wind direction aligned with the dune axis plus lesser, off-axis or seasonally alternating winds. Global compilations of dune orientations reveal the mean wind direction is dominantly eastwards, with regional and local variations where winds are diverted around topographically high features, such as mountain blocks or broad landforms. Global winds may carry sediments from high latitude regions to equatorial regions, where relatively drier conditions prevail, and the particles are reworked into dunes, perhaps on timescales of thousands to tens of thousands of years. On Titan, adequate sediment supply, sufficient wind, and the absence of sediment carriage and trapping by fluids are the dominant factors in the presence of dunes.

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BibTeX Citation

@article{ra07500u,
  author={Radebaugh, J. and Lorenz, R. D. and Lunine, J. I. and Wall, S. D. and Boubin, G. and Reffet, E. and Kirk, R. L. and Lopes, R. M. and Stofan, E. R. and Soderblom, L. and Allison, M. and Janssen, M. and Paillou, P. and Callahan, P. and Spencer, C. and Cassini Radar Team},
  title={Dunes on Titan observed by Cassini Radar},
  year={2008},
  journal={Icarus},
  volume={194},
  pages={690--703},
  doi={10.1016/j.icarus.2007.10.015},
}

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RIS Citation

TY  - JOUR
ID  - ra07500u
AU  - Radebaugh, J.
AU  - Lorenz, R. D.
AU  - Lunine, J. I.
AU  - Wall, S. D.
AU  - Boubin, G.
AU  - Reffet, E.
AU  - Kirk, R. L.
AU  - Lopes, R. M.
AU  - Stofan, E. R.
AU  - Soderblom, L.
AU  - Allison, M.
AU  - Janssen, M.
AU  - Paillou, P.
AU  - Callahan, P.
AU  - Spencer, C.
AU  - Cassini Radar Team
PY  - 2008
TI  - Dunes on Titan observed by Cassini Radar
JA  - Icarus
VL  - 194
SP  - 690
EP  - 703
DO  - 10.1016/j.icarus.2007.10.015
ER  -

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