Through systematic sampling of the sand dunes around the Crescent Moon Spring, combined with regional wind conditions data, this paper made an analysis of the particle size distribution and grain size characteristics. The pyramid dune to the north of the Crescent Moon Spring's particle size is relatively coarse and sorting is poor, with a distribution of more positive skewness, while the liner sand dune to the south of the Crescent Moon Spring mainly consists of fine sand and better sorting, with a distribution of positive skewness. From the northwest and southwest slopes to the east slope, sediment grains becomes finer, and sorting becomes better, but the trend is not significant, indicating that there is no significant movement of the pyramid dune. However, on the liner sand dune, from the southern slope to the north slope, sand particle size becomes finer and sorting changes better, showing that the movement of linear sand dune to south of the Crescent Moon Spring is obvious. Analysis of wind power environment and the grain size characteristics indicates that the blown sand disaster to the Crescent Moon Spring mainly comes from the northward movement of the linear sand dune movement.
Zhang Hao
,
Zhang Kecun
,
An Zhishan
,
Pang Yingjun
. Grain Size Characteristics of Sand Dunes around the Crescent Moon Spring in Dunhuang, China[J]. Journal of Desert Research, 2014
, 34(3)
: 645
-649
.
DOI: 10.7522/j.issn.1000-694X.2013.00367
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