What is wind erosion?

wind erosion is a natural process by which the soil forms are changed by wind action. This can happen in two main ways. The wind can release and transport soil, mud and sand particles, sometimes carry them over long distances and store them in other areas and can wear surfaces with an abrasive effect of small, airy mineral particles, resulting in a number of characteristic formations. Soil erosion is a serious problem in many parts of the world and can have a great economic impact. This problem was deteriorated by human activities in many areas. The thin vegetation also contributes to the effects of wind erosion, as the roots of the plants help hold the soil together, while the stems and leaf tend to prevent wind. The transport of the material through the wind can take the form of a suspension, where they remain very small particlesususpended in the air and can be transmitted for long distances and salinity, where larger particles are bouncing along the surface, sometimes more particles are released when they move. This results in someThe areas are exhausted in small particles and other areas where these particles are stored and transformed by massing dust, mud or sand.

The process of removing small particles from the soil surface is called deflation. The result is a decrease in soil surface, in some areas they form deflationary cavities and on a surface composed mostly or completely from larger particles that remained behind, known as a desert sidewalk. The material is usually stored through a wind, where there is a certain obstruction, such as rocks, vegetation or artificial structures of the wind is reduced where it flows through the obstacle and the material descends to the ground. The stored material can be an obstacle that causes the accumulation of other blown wind material, as is the case with sand dunes, which can cover very large areas, such as large Eastern ERG and large western ERG in the Sahara desert of North Africa. Dust and mud -mounted wind are known jaKo loess and can also cover wide areas.

wear of rock surfaces using wind blown particles is known as abrasion and the resulting rock molds are known as ventifacts. Among the most common ventifacts observed in desert areas are flat, smooth rock surfaces facing the predominant wind and angle at 30-60 degrees to horizontal, often with distinctive grooves and pits. The presence of these rock forms in sediments in the past is an indicator of arid climate. Long, wind comb, which narrows the wind, are known as yardangs and can be seen in many desert areas. Ventifacts were also observed on the Mars surface.

soil wind erosion can render large areas of LA uncultivation and can lead to desert expansion, because the ground exhausted by soil and less particles is less able to maintain moisture. Although soil erosion occurs naturally, intense agriculture and deforestation caused the soil to be more vulnerable to wind erosion by revealing the surface, increaseby giving evaporation and removing the protective cover. Wind dust due to soil erosion can also pose a risk of reducing the quality and visibility of air, clogging machines and pilinging in rivers, increasing the river and increasing the risk of floods. One of the worst examples of wind soil erosion was the "dust bowl" over the age of 30 in the southern and central large plains of America, and it is still a problem in arid parts of the world.