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| Characteristics of dust deposition and particle size in spring in the southeastern Tengger Desert |
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Abstract Detailed data acquired on shifting dune field in the southeast of Tengger Desert was used to analyze the amount of dust deposition and particle size distribution. Results indicated that dust deposition was the greatest in May, and followed by April and March, and mean dust deposition amount being 1053. 3kg/hm2in spring. Mean particle size was greater and mainly of sand, and belonged to the poor and well sorted, skewness belonged to the nearly symmetrical and very positive, and kurtosis belonged to the platy-kurtic and very leptokurtic. Due to the wind speed, surface roughness and sand supply, the particle size distribution mode was mainly of bi-mode. Saltation was dominant, accounting for about 90%, shorter distance suspension accounting for about 7%, and long distance suspension accounting for about 4%. Thus, the sediment deposition was mainly of local origin.
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Received: 16 February 2011
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