Question

What is a barkhan? Where is it formed

Answer 1

Answer:

Barkhan is crescent-shaped dunes in desert of central Asia it is found in desert

Answer 2

Answer:

A crescent-shaped dune is known as a barchan or barkhan dune. it was formed in 1881 by Russian naturalist Alexander von Middendorf

Explanation:

• Barchans are formed by wind activity that mostly comes from one direction and face the wind, looking convex. These arc-shaped, noticeably asymmetrical, with a slight slope toward the wind sand ridge, well-sorted sand-containing landforms are highly widespread in sandy deserts all over the world.

• The slip face, or steeper of the two "horns" on this sort of dune, faces away from the wind, downwind, at the angle of repose of the sand in question, which is around 30-35 degrees for medium-fine dry sand. The wind has compressed the upwind side, which is at a 15-degree angle. Barchans may be between 9 and 30 metres tall and 370 metres broad at its bases when measured perpendicular to the wind.

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