Post-event survey of locally concentrated disaster due to 2019 Typhoon Faxai along the western shore of Tokyo Bay, Japan

Takayuki Suzuki, Yoshimitsu Tajima, Masashi Watanabe, Naoki Tsuruta, Hiroshi Takagi, Tomoyuki Takabatake, Kojiro Suzuki, Takenori Shimozono, Yoshinori Shigihara, Tomoya Shibayama, Shingo Kawaguchi, Taro Arikawa

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Abstract

Typhoon Faxai caused severe damages along the western shore of Tokyo Bay, Japan in September 2019. Retaining a relatively small radius of maximum wind, Faxai passed across the center of Tokyo Bay and caused intensive wind and waves. While the sea level anomaly recorded at several tide gauge stations along Tokyo Bay were at most 1 m, and no significant surge-induced inundation was found, locally concentrated damages and wave-induced hazards were observed around Yokohama, on the middle-western shore of Tokyo Bay. The observed inundation height around Yokohama was TP (Tokyo Peil) 4.2 m on average, and the highest runup, TP 10.8 m, was observed at a small hill directly behind the seawall in Fukuura, Yokohama. The estimated wave overtopping directions at each location varied from the northeast to southeast, and no clear correlation was found between the wave overtopping directions and the extent of observed coastal hazards. Based on these findings and investigations of recorded data such as wind and waves, it was deduced that locally concentrated damages and hazards around the middle western shore of Tokyo Bay may be explained by the unique features of a relatively compact Faxai and the topographical characteristics of Tokyo Bay.

Original languageEnglish
Pages (from-to)146-158
Number of pages13
JournalCoastal Engineering Journal
Volume62
Issue number2
DOIs
Publication statusPublished - 2020 Apr 2

Keywords

  • coastal disaster
  • storm surge
  • Stormy wave
  • wave overtopping

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Modelling and Simulation
  • Ocean Engineering

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    Suzuki, T., Tajima, Y., Watanabe, M., Tsuruta, N., Takagi, H., Takabatake, T., Suzuki, K., Shimozono, T., Shigihara, Y., Shibayama, T., Kawaguchi, S., & Arikawa, T. (2020). Post-event survey of locally concentrated disaster due to 2019 Typhoon Faxai along the western shore of Tokyo Bay, Japan. Coastal Engineering Journal, 62(2), 146-158. https://doi.org/10.1080/21664250.2020.1738620