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中国沙漠 ›› 2007, Vol. 27 ›› Issue (6): 1077-1079.

• 天气与气候 • 上一篇    下一篇

盐池地区沙尘暴期间风沙运动若干特征研究

王鹏祥1,2; 孙兰东1; 岳 平1,2; 牛生杰2   

  1. 1.中国气象局兰州干旱气象研究所/甘肃省(中国气象局)干旱气候变化与减灾重点(开放)实验室, 甘肃 兰州 730020; 2.南京信息工程大学, 江苏 南京 210044
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-11-20 发布日期:2007-11-20

Features of Dust Aerosol Transportation during Sandstorms over Yanchi Area of Ninxia Autonomous Region

WANG Peng-xiang1, 2; SUN Lan-dong1; YUE Ping1,2; NIU Sheng-jie2   

  1. 1.Gansu Province & China Meteorological Administration Key Laboratory of Arid Climatic Changes and Reducing Disaster; Lanzhou Institute of Arid Meteorology, China Meteorological Administration, Lanzhou 730020, China; 2.Nanjing University of Information Science and Technology, Nanjing 210044, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-11-20 Published:2007-11-20

摘要: 通过沙尘暴期间的实际观测资料,对宁夏盐池地区沙尘暴期间风蚀起沙的几个相关特性进行了研究。结果表明:当地10 m高度的临界起沙速度为5.0 m·s-1,临界摩擦速度为0.32 m·s-1;采用凌裕泉提出的“最大可能输沙量”计算方法,得出盐池地区沙尘暴期间的输沙量为12.42 kg·m-1;当地沙尘气溶胶粒子传输距离为1.4×105~1.4×106 km。

关键词: 沙尘暴, 风蚀, 临界起沙速度, 临界摩擦速度

Abstract: This paper studied the dust aerosol transporting distance and the relation between wind speed and dust erosion based on the in situ measurement measured by APS-3310A(U.S.A.made) in Yanchi area of Ningxia Autonomous Region during April to May of from 1966 to 1999. Dust transporting distance was calculated according to Kaman empirical formula, and the relation between wind speed and dust erosion were calculated following Bagnold calculation. The results show that the aerosol particle transportation distance is about 1.4×105~1.4×106 km, and the threshold sand-moving wind speed is 5.0 m.s-1 in the study area.

Key words: sandstorm, threshold sand-moving wind speed, threshold friction wind speed

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