One term used is drifting.
Migration
Moving dunes is what is in my book...
Large piles of sand are called dunes.
The movement of sand by short jumps and bounces that is caused by wind is called deflation. This is considered to be a form of erosion.
parabolic dunes
parabolic dunes
The wind causes movement
The valley or trough between dunes is called a slack
The massive wind blown piles of sand are called sand dunes. This is when sands blow into a pile.
dunesdunes i thinkMounds of loose sand are called dunes. A valley or trough between dunes is called a slack. Dunes are built up by wind or water.
That they are not called the same.duhhh
Sand dunes in every desert are in almost constant movement. They are simply hills of sand and the wind changes them easily and often.