Damage Investigation of Gust Wind and Storm Surges Disasters in Tokyo Bay Area by Typhoon No.15 (Faxai) in 2019

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  • YAMAMOTO Haruhiko
    Graduate School of Sciences and Technology for Innovation, Yamaguchi University
  • KANEMITSU Naoki
    Faculty of Agriculture, Yamaguchi University
  • MIYAKAWA Yuta
    Faculty of Agriculture, Yamaguchi University
  • OHTANI Yuki
    Faculty of Agriculture, Yamaguchi University
  • WATANABE Yuka
    Graduate School of Sciences and Technology for Innovation, Yamaguchi University
  • SAKAMOTO Kyoko
    Graduate School of Sciences and Technology for Innovation, Yamaguchi University
  • IWAYA Kiyoshi
    Graduate School of Sciences and Technology for Innovation, Yamaguchi University

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Other Title
  • 2019年台風15号(Faxai)により東京湾沿岸で発生した強風，高潮・高波災害の被害調査
  • 2019ネン タイフウ 15ゴウ(Faxai)ニ ヨリ トウキョウワン エンガン デ ハッセイ シタ キョウフウ,タカシオ ・ タカナミ サイガイ ノ ヒガイ チョウサ

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Abstract

In 2019, typhoon No.15 (Faxai) headed north in the Pacific Ocean during the evening of September 8 and passed Izu-Oshima Island at midnight on September 9. Then it traveled across the Miura Peninsula at around 2:30 and headed northeast on Tokyo Bay, making landfall at Chiba City. by 7:30 that morning, it had passed the southern part of Ibaraki Prefecture and went offshore near Kashima-Nada. With the passage of the typhoon, the maximum instantaneous wind speeds observed were 57.5 m/s in Chiba and 49.0 m/s in Kisarazu. Strong winds raged mainly on the Boso Peninsula located on the eastern side of the typhoon’s course. There, damages were incurred including the scattering of roof tiles of houses, and a long blackout period ensued due to the collapse and other damage to poles carrying electricity, caused by strong winds and fallen trees. In addition, inundation and flood damage were caused by storm surges in the Tokyo Bay area. As a result of strong winds that accompanied the typhoon, a steel tower collapsed at a driving range, there was a breakdown at the mega-solar- power water station, large public buildings such as school gymnasia sustained damages, and residential housing and agricultural buildings collapsed in Chiba Prefecture. In addition, due to storm surges that accompanied the typhoon, facilities and vehicles at a wharf were damaged and flood damage occurred at industrial estates in Yokohama City.

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