A Statistical Study of Tornadoes and Waterspouts in Japan from 1961 to 1993
| Autor: | Tokunosuke Fujitani, Hiroshi Niino, Nobuyuki Watanabe |
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| Rok vydání: | 1997 |
| Předmět: | |
| Zdroj: | Journal of Climate. 10:1730-1752 |
| ISSN: | 1520-0442 0894-8755 |
| DOI: | 10.1175/1520-0442(1997)010<1730:assota>2.0.co;2 |
| Popis: | A database on tornadoes and waterspouts in Japan from 1961 to 1993, which is believed to be most reliable at present, was compiled after an extensive survey of apparently almost all existing literature. Six hundred and seventy-seven tornadoes and 148 waterspouts were cataloged in the database, which is operated on a personal computer basis. Various statistical characteristics of tornadoes and waterspouts have been examined: 1) On average 20.5 tornadoes and 4.5 waterspouts occur per year in Japan. 2) Tornadoes occur most frequently in September and least frequently in March. Waterspouts occur most frequently in October. 3) Both tornadoes and waterspouts have high activities during daytime. The activity of tornadoes has two peaks between 1000 and 1100, and between 1500 and 1600 JST (Japan Standard Time). 4) About two-fifths of the tornadoes occur on multiple-tornado days. 5) The average lifetimes of tornadoes and waterspouts are 12 and 14 min, respectively. 6) About 15% of tornadoes are anticycloni... |
| Databáze: | OpenAIRE |
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