摘要
对1949—2000年间登陆我国的热带风暴的异常路径及其特征进行统计了分析。结果发现,路径异常热带风暴的偏折点主要出现在海南岛东南部海域、珠江口附近海域及台湾海峡。该类热带风暴多发生于7—9月。其发生频率有明显的年际、年代际变化,以20世纪70—90年代的频率较高。强度(中心风速)较弱和移速较慢的热带风暴易出现异常偏折。
The track-abnormalities of the tropical cyclones landing at China mainland coastal areas were statistically analyzed with yearbook data of tropical cyclones from 1949 to 2000. The results show that the abnormal turning-points of the track-abnormal tropical cyclones are mainly located in the sea area southeast to the Hainan Island, offshore area to the Pearl River delta region and the Taiwan Strait. The abnormal cases occurred mainly in July through September, especially during 1970s to 1990s, with significant features of interannual and interdecadal variations. The weak wind-speed and slow translating velocity are two necessary conditions for the occurrence of the track-abnormality of the tropical cyclones.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
2003年第2期93-96,共4页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
国家科技部重点基金资助项目(2002DIA20026)
