Landform Created by action of Wind

Landform is created depending upon the action of wind i.e. land-form may be due to deposition or due to erosion cause  by wind. Here are some land-forms:

Sand Dunes:

• Dune sands are usually very uniform in size and shape.
• For sand dunes to form there must be an abundant supply of sand and steady winds.
• At a spot where winds meet with an obstacle, speed of wind gets slow down , and dunes formed due to deposition of sand carried by the wind.
• The side of the dunes facing the wind has a gentle slope and the opposite side has a steep side.
• Because of the slow speed of the wind, the sand on the gentle slope gets carried to the top and comes down the steep slope on the other side and in this manner sand dunes gradually move forward.

Loess:

• Loess is another major deposit created by wind.
• Loess is a soil finer than sand and important for humans because it creates very fertile soils.
• Because of its small size it can be held in suspension and carried great distances by wind.
• Loess transported from the desert regions of Central Asia has been deposited in layers in China.

Barchan or Barkhan:

• Crescent-shaped dune whose long axis is transverse to the dominant wind direction
• Barchans usually form where there is a limited supply of sand, reasonably flat ground, and a fairly even flow of wind from one direction.