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Small grains which are lifted into the air (or into the water from a river bed) may fall back to the ground again. When they hit the ground they may induce a nearby grain to fly into the air (or water). This skipping and jumping motion of small grains is called "saltation".
Saltation is initiated by sand grains which are high enough off the ground to be in the local wind stream. These grains may break off or roll away, kicking up other particles when they land. Abrasion from saltation is controlled by wind
The movement of sand grains in air or water creates ripples and dunes along the surface.
Small grains which are lifted into the air (or into the water from a river bed) may fall back to the ground again. When they hit the ground they may cause a nearby grain to fly into the air (or water). This skipping and jumping motion of small grains is called "saltation".
Saltation is started by sand grains which are high enough off the ground to be in the local wind stream. These grains may break off or roll away, kicking up other particles when they land.
The movement of sand grains in air or water creates ripples and dunes along the surface.
Small grains which are lifted into the air (or into the water from a river bed) may fall back to the ground again. When they hit the ground they may cause a nearby grain to fly into the air (or water). This skipping and jumping motion of small grains is called "saltation".
Saltation is started by sand grains which are high enough off the ground to be in the local wind stream. These grains may break off or roll away, kicking up other particles when they land.
The movement of sand grains in air or water creates ripples and dunes along the surface.
