Consider the following statements about Barchans: 1. These landforms

Consider the following statements about Barchans:

1. These landforms are found in Thar desert in India.
2. The windward side has concave slope with maximum height at the centre.
3. Two ends of the barchan are called horns.

Which of the statements given above is/are correct?

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1 and 2 only

2 and 3 only

1 and 3 only

3 only

Answer is Right!

Answer is Wrong!

This question was previously asked in

UPSC CAPF – 2023

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Statement 1 is correct; Barchan dunes are common landforms found in various deserts, including the Thar Desert in India. Statement 3 is correct; the two tapering ends of a crescent-shaped barchan dune, which point downwind, are called horns. Statement 2 is incorrect; the windward side of a barchan dune has a gentle, *convex* slope where sand is pushed up by the wind. The leeward side is the steep *concave* slip face.

Barchans are characteristic crescent-shaped dunes formed by unidirectional wind, commonly found in sand deserts. Their structure includes a gentle, convex windward slope, a steep, concave leeward slip face, and horns pointing in the direction of the wind.

Barchans typically form where there is a limited supply of sand and a relatively constant wind direction. Their movement is primarily determined by wind speed and direction. Statement 2 incorrectly describes the windward slope as concave; it is the leeward slip face that is concave and steep.

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