Figure 7
From: The sand-deposition impact of artificial gravel beds on the protection of the Mogao Grottoes
Distribution of sand weights at various heights in the shifting sand area and the gravel paving area above the Mogao Grottoes during the great dust storm of June 2, 2011.
The wind direction of the storm was northwest. Staged sand accumulation instruments of height 1 m were set up on the shifting sand area and the artificial gravel area along a NW → SE orientation.
