Figure 6
From: The sand-deposition impact of artificial gravel beds on the protection of the Mogao Grottoes
Distribution of sand accumulation rates at various heights on the artificial gravel bed under different initial wind speeds.
(a1) Variations in sand accumulation rates (g/(min·m)) at various heights on a medium gravel (2–4 cm) bed with coverage of 30% under different initial wind speeds (6 m/s, 8 m/s, 10 m/s, 12 m/s and 14 m/s). (a2) On a medium gravel (2–4 cm) bed with coverage of 40%. (b1) On a large gravel (4–6 cm) bed with coverage of 30%. (b2) On a large gravel (4–6 cm) bed with coverage of 40%.
