Barchan’ landforms are associated with which of the following physical regions?

🔑 Key Points
Barchan Landforms
→ 'Barchan' landforms are associated with the Desert region.
→ Dry hot deserts are good places for sand dune formation.
→ Crescent-shaped dunes are called barchans.
→ It has the points or wings directed away from the wind direction, i.e., downwind.
→ It forms where the wind direction is constant and moderate and where the original surface over which sand is moving is almost uniform.

📌 Important Points
→ Parabolic dunes form when sandy surfaces are partially covered with vegetation.
→ That means parabolic dunes are reversed barchans with wind direction being the same.
→ Seif is similar to barchan with a small difference.
→ Seif has only one wing or point. This happens when there is a shift in wind conditions.
→ The lone wings of seifs can grow very long and high.
→ Longitudinal dunes form when the supply of sand is poor and wind direction is constant. They appear as long ridges of considerable length but are low in height.
→ Transverse dunes are aligned perpendicular to the wind direction. These dunes form when the wind direction is constant and the source of sand is an elongated feature at right angles to the wind direction. They may be very long and low in height.