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中国沙漠 ›› 1997, Vol. 17 ›› Issue (4): 442-446.

• 研究论文 • 上一篇    下一篇

河西走廊最近一次强沙尘暴的调查分析

常兆丰, 刘虎俊, 纪永福   

  1. 甘肃省治沙研究所, 武威 733000
  • 收稿日期:1996-07-17 修回日期:1996-09-26 出版日期:1997-12-20 发布日期:1997-12-20
  • 作者简介:常兆丰,男,1957年生,工程师。长期从事治沙科研工作。

INVESTIGATION AND ANALYSIS TO THE LATEST STRONG SAND-DUST STORM OCCURED IN HEXI CORRIDOR

CHANG Zhao-fen, LIU Hu-jun, JI Yong-fu   

  1. Gansu Institute of Sand Control Research, Wuwei 733000
  • Received:1996-07-17 Revised:1996-09-26 Online:1997-12-20 Published:1997-12-20

摘要: 1996年5月29~31日在甘肃河西走廊又出现了一次强沙尘暴天气。从这次强沙尘暴和1993年"5·5"强沙尘暴的比较分析可知,春季在河西走廊周围易形成以沙漠为中心的高温低压区,与西西伯利亚向东南方向移动的高压冷气流形成明显的气压梯度,这就是大风的动力源。大风前期,在气温、压温比等方面有明显的预兆,由此可进行强沙尘暴的预测预报。

关键词: 河西走廊, 强沙尘暴

Abstract: Another strong sand-dust storm occured in the Hexi Corridor during 29~30 May 1996.We have compared this sand-dust storm with the sand-dust storm occured on 5 May 1993.It is concluded that high temperature and low pressure air mass appear frequently near the Hexi Corridor in Spring.There is obvious pressure gradient between this air mass and high pressure(cold) air current moving southeastward from western Siberia,which is the force source of strong storm.The results of investigation also show that there are obvious signs on air temperature,wind direction,the ratio of pressure and temperature etc.prior to occurence of a strong sand-dust storm.Therefore,it is possible to predict the coming of a strong sand-dust storm.

Key words: Hexi Corridor, Strong sand-dust storm

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