Erosion by Wind: Principles

Authored by: Larry D. Stetler

Encyclopedia of Environmental Management

Print publication date:  December  2012
Online publication date:  December  2012

Print ISBN: 9781439829271
eBook ISBN: 9781351235860
Adobe ISBN:

10.1081/E-EEM-120001553

 Download Chapter

 

Abstract

Erosion of sediment and soil by wind arises when the kinetic energy in the passing airstream exceeds the energy employed in adhering the grain to the surface. Initial grain motion is achieved at this instant and the grain will be transported in saltation as a series of short hops along the surface. Each time the grain impacts the surface, additional grains are released into the flow until at some distance downwind the carrying capacity of the wind is reached. From this point on, the mass of sediment in transport remains relatively constant; e.g., it is self-balanced. However, mass is lost from the process primarily through deposition of heavy particles behind surface roughness elements. In addition, suspendable particles of fine dust are released vertically through the saltation layer. Many additional factors, such as climate and surface conditions, complicate the simple mechanics involved.

 Cite
Search for more...
Back to top

Use of cookies on this website

We are using cookies to provide statistics that help us give you the best experience of our site. You can find out more in our Privacy Policy. By continuing to use the site you are agreeing to our use of cookies.