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The sand-deposition impact of artificial gravel beds on the protection of the Mogao Grottoes.

ABSTRACT: Gravel beds can prevent sand-dust emission and weaken sand-dust flux. We used wind-tunnel experiments and field observations on artificial gravel beds above the Mogao Grottoes to quantify their impact. In the report, we identified a significant correlation between gravel roughness and its ability to trap wind-transported sand. The optimal combinations of gravel diameter and coverage were determined. The greatest roughness is achieved when small gravel coverage is 75%, medium 40% and large 45%. We found that initial wind speed and gravel coverage are the key factors controlling the amount of sand trapped by the gravel beds.

SUBMITTER: Li GS

PROVIDER: S-EPMC3949251 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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The sand-deposition impact of artificial gravel beds on the protection of the Mogao Grottoes.

Li Guo Shuai GS Qu Jian Jun JJ Li Xu Zhi XZ Wang Wan Fu WF

Scientific reports 20140311

Gravel beds can prevent sand-dust emission and weaken sand-dust flux. We used wind-tunnel experiments and field observations on artificial gravel beds above the Mogao Grottoes to quantify their impact. In the report, we identified a significant correlation between gravel roughness and its ability to trap wind-transported sand. The optimal combinations of gravel diameter and coverage were determined. The greatest roughness is achieved when small gravel coverage is 75%, medium 40% and large 45%. W ...[more]

PMID: 24614183

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