| Desert and Desertification |
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| Blown Sand Activities in Spring in the Desert Transitional Zone of the Taklimakan Desert—A Case in Xiaotang Area |
| YANG Xing-hua1,2, LI Hong-jun1,2, HE Qing1,2, Ali Mamtimin1,2, HUO Wen1,2, LIU Xin-chun1,2 |
1.Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China;
2.Taklimakan Desert Atmosphere and Environment Observation Experiment Station, Tazhong 841000, Xinjiang, China |
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Abstract The characteristics of blown-sand activities in spring in the desert transitional zone (Xiaotang area) of the Taklimakan Desert are studied through data statistics and calculation of wind velocity, saltation particles number and sand transporting quantity. At the height of 2 m above ground surface, the instant sand-laden wind velocity for naturally mixed sands is about 4.9 m·s-1 at one-second interval, and it is about 4.4 m·s-1 at one-minute interval. With the increase of wind velocity, its frequency decreases gradually, and the most are from 4.4 m·s-1 to 8.4 m·s-1. Similar to the distribution of t sand-laden wind velocity, the distribution of drift potential and sand transporting quantity is mainly in ENE, E and ESE directions. During the observation period from April 15 to May 14, the total drift potential is 80.8 VU, the resultant drift potential is 13.7 VU, resultant drift potential direction is 241°; the total maximum possible sand transporting quantity is 1 921.8 kg·m-1, the resultant sand transporting quantity is 286.8 kg·m-1, and the resultant sand-transporting direction is 235.
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Received: 24 October 2011
Published: 04 January 2012
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2012, Vol. 32 
