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投稿时间：2006-12-04 修订日期：2007-07-06
投稿时间：2006-12-04 修订日期：2007-07-06
中文摘要: 利用灾后调查资料、常规天气图及永州多普勒雷达资料，分析2006年4月10日凌晨发生在湖
南省双牌县理家坪乡出现的严重风灾。结果表明：这是永州市自有气象记载以来首次确认的
龙卷灾害；该龙卷为超级单体龙卷，具有非常经典的钩状回波特征；强的水平风垂直切变和
热力不稳定环境促使了超级单体中的中气旋的产生，中低层的辐合最终在中气旋中形成龙卷.
Abstract:The severe wind which took place in the morning of April 10, 2006 in Lij
iaping town, Shuangpai County, Hunan Province was analyzed based on the post di
saster inspection data, conventional weather data and Yongzhou Doppler radar dat
a. It shows that the severe wind was the first confirmed tornado in Yongzhou Cit
y in normal meteorological records. It was a supercell tornado, and had classica
l tornado hook characteristics in the radar base reflectivity. The strong vertic
al wind shear and thermodynamic instability resulted in a meso cyclone in the s
upercell. The convergence of on low and middle level atmosphere in the mesocycl
one resulted in the tornado finally.
keywords: tornado supercell hook echo vorticity equation
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引用文本：
唐小新,廖玉芳,2007.湖南省永州市2006年4月10日龙卷分析[J].气象,33(8):23-28.
Tang Xiaoxin,Liao Yufang,2007.An Analysis of a Tornado in Yongzhou, Hunan Province[J].Meteor Mon,33(8):23-28.
唐小新,廖玉芳,2007.湖南省永州市2006年4月10日龙卷分析[J].气象,33(8):23-28.
Tang Xiaoxin,Liao Yufang,2007.An Analysis of a Tornado in Yongzhou, Hunan Province[J].Meteor Mon,33(8):23-28.