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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (6): 1629-1635    DOI: 10.7522/j.issn.1000-694X.2013.00185
Desert and Desertification     
Grain Size Characteristics of Different Parts of the Crescent Dunes in Karakum Desert, Xinjiang, China
YU Sheng-qing1, Abdu Mijiti2, ZHOU Xiang-ling1, HUANG Xiao-jun1
1.Department of Physics, Kashgar Teachers College, Kashgar 844006, Xinjiang, China;
2.Kashgar Forestry Survey and Design Team, Kashgar 844000, Xinjiang, China
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Abstract  

The analysis on the sand particle grain size from different parts of selected crescent dunes in Karakum Desert of Xinjiang, China shows that the surface layer and the underlying sediments layer are both mainly the fine sand and extreme fine sand with content more than 82%. The average grain size of the underlying layer sediments is 2.16 Φ and the surface sediments is 2.09 Φ. The underlying layer sediments has a better sorting characteristics than the surface layer sediments, the standard variation values of those two layers are 0.48 and 0.62 respectively. Both the surface layer and the underlying layer sediments skewness are positive, SK values are 0.21 and 0.24 respectively. Kurtosis are both narrow and pointed, Kg values are 1.18 and 1.11 respectively. The average sand particle grain size of the dune crest is the coarsest, and sand from the dunes root of leeward slope is the finest. The sand particle grain size of crescent dunes gradually become coarser from dune root to dune crest. And the average sand particle grain size is also well related to other particle size parameters. The sand particle grain size characteristics of crescent dunes in Karakum Desert is not only restricted by provenance background, but also constrained by regional tectonic, desert landforms, vegetation, climate, complex aeolian sand dynamic process and many other factors.

Key words:  Karakum Desert      crescent dune      grain size     
Received:  10 April 2013      Published:  27 May 2013
ZTFLH:  喀拉库姆沙漠| 新月形沙丘| 粒度  

Cite this article: 

YU Sheng-qing1, Abdu Mijiti2, ZHOU Xiang-ling1, HUANG Xiao-jun1. Grain Size Characteristics of Different Parts of the Crescent Dunes in Karakum Desert, Xinjiang, China. JOURNAL OF DESERT RESEARCH, 2013, 33(6): 1629-1635.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00185     OR     http://www.desert.ac.cn/EN/Y2013/V33/I6/1629

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