Posts

Showing posts with the label Sediment transport

Resultant Features of Wind Deposition

Image
  The following are the Resultant Features of Wind Deposition: Sand Dunes are Low ridge of sand accumulated by wind deposition. Types of sand dunes Barchans this is a crescent-shaped mound of sand in a desert. barchans forming process Sand accumulates around an obstacle lying on the path of the wind . Deposition continues making the mound grow bigger. The wind blows sand over the leeward side creating a smooth gentle windward slope. Wind eddies act on the leeward slope, making it to be steep and concave. Sidewind moves the sand grains on the sides forward creating the two edges which are curved e.g. in the Sahara and Arabia Desert. Characteristics of sand dunes Crescent/moon shaped Smooth gentle windward slope Steep concave leeward slope Horns or 2 curved edges Occurs individually or in groups ii) Seif Dunes this is Ridge shaped mounds of sand lying parallel to the path of the prevailing wind. seif dunes forming process The wind blows between barchan dunes. Wind eddies move sand to...