| Popis: |
Besides peak gust speeds, a gust factor and duration of strong wind affects extent of structural damage. Typhoon Mireille (No.19 in 1991) had features of high gust factors and a high moving speed. On the other hand, a movement speed of Typhoon Talas (No.12 in 2011) was very slow. In this paper, relations between moving speeds of six typhoons which caused damage after 1990's and characteristics of strong winds were compared. The following features were found: (1) ・Although a relation between moving speed of typhoons and wind speeds varied widely, "typhoon gust factor", which is a ratio of peak gust speed and maximum wind speed resulting from typhoons, seems to increase as moving speeds of typhoons become high. (2) Wind speeds and gust factors recorded at points on the right side of a typhoon path become larger than those on the left side. |
