CHARACTERISTICS OF SURFACE WINDS IN TAKLA-MAKAN DESERTS AND THEIR RELATIONSHIP TO THE ORIENTATION OF DUNES IN NEIGHBORING REGIONS

Zu Ruiping; Zhang Kecun; Qu Jianjun; Ling Yuquan

Vol.16, NO.4, 2005

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2005 > 16(4): 468-475

Zu Ruiping, Zhang Kecun, Qu Jianjun, et al. Characteristics of surface winds in Takla-Makan Deserts and their relationship to the orientation of dunes in neighboring regions. J Appl Meteor Sci, 2005, 16(4): 468-475.

Citation:

Zu Ruiping, Zhang Kecun, Qu Jianjun, et al. Characteristics of surface winds in Takla-Makan Deserts and their relationship to the orientation of dunes in neighboring regions. J Appl Meteor Sci, 2005, 16(4): 468-475.

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CHARACTERISTICS OF SURFACE WINDS IN TAKLA-MAKAN DESERTS AND THEIR RELATIONSHIP TO THE ORIENTATION OF DUNES IN NEIGHBORING REGIONS

Key Laboratory of Desert and Desertification, Cold and Arid Environmental and Engineering Research Institute, CAS, Lanzhou 730000

Received Date: 2004-07-06
Rev Recd Date: 2005-03-14
Publish Date: 2005-08-31

Abstract

Abstract

Study is performed of the near-surface wind fields in the Takla-Makan Deserts by use of 17-station winds and the high-level circulation situation, with focus on the relation between wind-filed features and dunes arranged in the neighboring areas. Results suggest that in the background of upper-air westerlies, the near-surface wind features are produced from the dynamic bifurcation and lifting by Tibetan Plateau and Tianshan Mountain Ranges, as shown in the following: in winter easterly (westerly) winds prevail east (west) of the Niya River; in summer northwesterly and westerly (northeasterly) winds are prevalent west (east) of the Keriya River; the NE (NW) winds get decreased (increased) form east to west, with N—S wind strength changing in a complex manner; the sand transport potential is less than 200 VU in the Takla-Makan Deserts except Ruoqiang County, the Deserts falling into a low-energy wind environment dominated by a single-peak or an acute bi-peak form, with the energy higher in the eastern and middle parts and low in the western and southern portions of the Deserts; the orientation of dunes depends largely on the concluded angle between the major and minor winds for carrying sands and the ratio of their transported sands, with the orientation perpendicular to the maximum sand amount transferred.
- Takla-Makan Deserts;
- Wind regime;
- Change in wind direction;
- Sand drift potential;
- Orientation of dunes

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References(30)

Figures and Tables

图 1 站点分布图

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图 2 塔克拉玛干沙漠东西向主风向变化频数百分比 (a) 北部边缘, (b) 中部, (c) 南部边缘

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图 3 塔克拉玛干沙漠南北向主风向变化频数百分比 (a) 东部边缘, (b) 中部, (c) 西部边缘

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图 4 塔克拉玛干沙漠各站输沙势计算结果 (单位:VU)

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图 5 输沙方向与沙丘排列关系 (引自文献[28])

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表 1 中文塔克拉玛干沙漠各站起沙风频数百分比标题

表 2 塔克拉玛干沙漠部分区域几个方向参数与沙丘排列关系对比

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