transverse dune


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transverse dune

[trans¦vərs ′dün]
(geology)
A sand dune with a nearly straight ridge crest formed by the merger of crescentic dunes; elongated at right angles to the direction of prevailing winds, with a gentle windward slope and a steep leeward slope.
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References in periodicals archive ?
Dynamics of secondary airflow and sediment transport over and in the lee of transverse dunes.
Typically, transverse dunes are formed by winds from a narrow directional range while longitudinal or linear dunes are formed by winds from two obliquely opposing directions.
When there's abundant sand and little or no plant cover, the crests of the so-called transverse dunes are perpendicular to the wind.
These areas develop narrow, moderately to gently-sloping sand beaches, backed by extensive coastal transverse dunes developed from coalescent parabolic dunes.
Trough and saucer blowouts (terminology of Cooper 1967; Hesp and Hyde 1996) are developed in the coastal transverse dunes.
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.

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