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With an aid of a diagram, describe how a barchan is formed.

      

With an aid of a diagram, describe how a barchan is formed.

  

Answers


gregory
It develops in arid areas when sand accumulates around an obstacles that lies in the
path of the wind.
- The gradual accumulation of sand forms a hill.
- Eddy currents on the leeward side of the dune causesthe formation of a shallow
depression / concave slope / steep slope.
- With time the prevailing wind forces the sand at the edge of the dune to move forward
forming the horns.
- The continuous extension extension of the hornslead to a crescent shaped feature
called barchan.



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gregorymasila answered the question on February 27, 2018 at 04:49


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