Winds of Change on Titan

@article{Lorenz2010WindsOC,
  title={Winds of Change on Titan},
  author={R. Lorenz},
  journal={Science},
  year={2010},
  volume={329},
  pages={519 - 520}
}
  • R. Lorenz
  • Published 2010
  • Geology, Medicine
  • Science
Periodic strong winds blowing opposite to the prevailing wind may explain the dune orientation on Titan. On Saturn's moon Titan, giant sand dunes cover more than 20% of the surface. The orientation of thousands of dunes (1, 2) within Titan's equatorial belt indicates transport of sand from west to east (by “westerly” winds), whereas all the atmospheric circulation models suggest that the winds should be in the opposite direction. A new model by Tokano (3) may have found the resolution: Although… Expand

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References

SHOWING 1-10 OF 10 REFERENCES
Detection and mapping of hydrocarbon deposits on Titan
[1] We report the identification of compounds on Titan's surface by spatially resolved imaging spectroscopy methods through Titan's atmosphere, and set upper limits to other organic compounds. WeExpand
Relevance of fast westerlies at equinox for the eastward elongation of Titan’s dunes
Abstract Numerous linear dunes with eastward streamline pattern on Titan have mostly been interpreted as evidence of predominantly westerly (eastward) equatorial surface winds, although such windsExpand
An asymmetric distribution of lakes on Titan as a possible consequence of orbital forcing
A set of lakes filled or partially filled with liquid hydrocarbon and empty lake basins have been discovered in the high latitudes of Saturn's moon Titan. These features were mapped by the radarExpand
Global pattern of Titan's dunes: Radar survey from the Cassini prime mission
[1] We present a map of the orientation and extent of Titan's sand dunes derived from the complete radar imaging dataset from the Cassini prime mission. The 16,000 dune segments we have mapped coverExpand
In Dune Map, Titan's Winds Seem to Blow Backward
  • C. Wald
  • Medicine, Geology
  • Science
  • 2009
A new map of the dunes on Saturn9s moon Titan reveals that near-surface winds at the equator blow the wrong way: from west to east.
Multiple origins of linear dunes on Earth and Titan
The formation of dunes is controlled by the direction of the prevailing winds and the characteristics of the sediments. Linear dunes in the Qaidam Basin, China, are shown to form from cohesiveExpand
On the amount of heavy molecular ions in Titan's ionosphere
We present observational evidence that the ionosphere of Titan below an altitude of 1150 km is a significant source of heavy (4100 amu) molecular organic species. This study is based on measurementsExpand
The drying of Titan's dunes: Titan's methane hydrology and its impact on atmospheric circulation
[1] We explore the effect of a finite reservoir of methane on Titan's atmospheric circulation, precipitation patterns, and surface methane content. We develop a soil model that accounts for theExpand
Titan's inventory of organic surface materials
[1] Cassini RADAR observations now permit an initial assessment of the inventory of two classes, presumed to be organic, of Titan surface materials: polar lake liquids and equatorial dune sands.Expand
The Sand Seas of Titan: Cassini RADAR Observations of Longitudinal Dunes
TLDR
The most recent Cassini RADAR images of Titan show widespread regions that appear to be seas of longitudinal dunes similar to those seen in the Namib desert on Earth, and the distribution and orientation of the dunes support a model of fluctuating surface winds. Expand