Variations of Dynamical Elements During a Sand-storm Passing the Tengger Desert Region

LU Ping; DONG Zhibao; ZHANG Zhengcai; ZHAO Aiguo

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Variations of Dynamical Elements During a Sand-storm Passing the Tengger Desert Region

- Variations of Dynamical Elements During a Sand-storm Passing the Tengger Desert Region
- Bulletin of Soiland Water Conservation Vol. 29, Issue 3, Pages: 104-106(2010)
- 作者机构：
  
  中国科学院沙漠与沙漠化重点实验室,甘肃,兰州,730000
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- Published：2010
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LU Ping, DONG Zhibao, ZHANG Zhengcai, et al. Variations of Dynamical Elements During a Sand-storm Passing the Tengger Desert Region[J]. Bulletin of Soiland Water Conservation, 2010, 29(3): 104-106.
DOI：

LU Ping, DONG Zhibao, ZHANG Zhengcai, et al. Variations of Dynamical Elements During a Sand-storm Passing the Tengger Desert Region[J]. Bulletin of Soiland Water Conservation, 2010, 29(3): 104-106. DOI：

摘要

利用中国科学院风沙科学观测场的近地层观测资料

分析了腾格里沙漠地区沙尘暴天气过程地面摩阻速度、空气动力学粗糙度以及床面剪切力的变化特征。结果表明

在沙尘暴过境时

地面摩阻速度、空气动力学粗糙度以及床面剪切力并不是保持一成不变

而是随时间不断发生变化

各高度层风速之间相关系数大于0.9

具有很显著的相关性。

Abstract

Based on the data collected at the Sand Drift Observation Station of Chinese Academy of Sciences

the characteristics of friction velocity

aerody namicroughness length

and shear stress during a sand-storm passing the Tengger Desert region were analyzed. Results show that the elements vary with time during the passage of the sand storm. The variation of wind speed is highly correlated with the height and the coeff icient correlations are all bigger than 0. 9.

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