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transverse dune

   Also found in: Encyclopedia 0.02 sec.
transverse dune  (trns-vûrs, trnsvûrs)
A large, strongly asymmetrical, elongated dune lying at right angles to the prevailing wind direction. Transverse dunes have a gently sloping windward side and a steeply sloping leeward side. They generally form in areas of sparse vegetation and abundant sand. Most beach dunes are transverse dunes. See illustration at dune. Compare longitudinal dune.
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According to the study, this leads to a complete change in dune form from transverse dunes to linear dunes, even though the wind speed and direction does not change.
Scientists propose new mechanism for dune formation on Saturn's ... by Asian News International
When there's abundant sand and little or no plant cover, the crests of the so-called transverse dunes are perpendicular to the wind.
Shifting sands: dunes hold heaps of material--and climate clues, too by Perkins, Sid / Science News
Arrayed like threads in a tapestry and scores of kilometers long, Mars' transverse dunes angle across the direction of the dominant winds, with widely varied distances separating successive ridges or crests.
The sandy face of Mars: astronomers ponder the awesome dimensions of ... by Eberhart, Jonathan / Science News
 
 
 
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