Relation between Moving Speed of Typhoon and Properties of Strong Wind

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  • Kudo Aika
    Department of Urban Design, Planning and Disaster Management, Graduate School of Human-Environment Studies, Kyushu University
  • Tomokiyo Eriko
    Department of Architecture and Urban Design, Faculty of Human-Environment Studies, Kyushu University
  • Maeda Junji
    Department of Architecture and Urban Design, Faculty of Human-Environment Studies, Kyushu University

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Other Title
  • 台風移動速度と強風分布特性との関係
  • タイフウ イドウ ソクド ト キョウフウ ブンプ トクセイ ト ノ カンケイ

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Abstract

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.

Journal

  • 都市・建築学研究

    都市・建築学研究 22 45-50, 2012-07-15

    Faculty of Human-Environment Studies, Kyushu University

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