The wind exerts the same kind of force on particles on the land surface that river currents exert on it's bed. Turbuence and forward motion combine to lift particles into the windstream. Particles are also lifted into the air by means of saltation.
The force a wind can exert on a surface not only depends upon the wind speed, but also upon the roughness of the surface over which the wind blows. The greater the roughness of the surface, the greater the turbulence induced in the wind as it blows over the surface. As turbulence increases, the ability of the wind to lift particles from and erode a surface also increases.
The wind exerts the same kind of force on particles on the land surface that river currents exert on it's bed. Turbuence and forward motion combine to lift particles into the windstream. Particles are also lifted into the air by means of saltation.
The force a wind can exert on a surface not only depends upon the wind speed, but also upon the roughness of the surface over which the wind blows. The greater the roughness of the surface, the greater the turbulence induced in the wind as it blows over the surface. As turbulence increases, the ability of the wind to lift particles from and erode a surface also increases.
The wind exerts the same kind of force on particles on the land surface that river currents exert on it's bed. Turbuence and forward motion combine to lift particles into the windstream. Particles are also lifted into the air by means of saltation.
The force a wind can exert on a surface not only depends upon the wind speed, but also upon the roughness of the surface over which the wind blows. The greater the roughness of the surface, the greater the turbulence induced in the wind as it blows over the surface. As turbulence increases, the ability of the wind to lift particles from and erode a surface also increases.
