Japan Geoscience Union Meeting 2021

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[J] Oral

O (Public ) » Public

[O-03] How to cope with meteorological disasters under rapidly changing climate

Sun. Jun 6, 2021 9:00 AM - 10:30 AM Ch.02 (Zoom Room 02)

convener:Jun Matsumoto(Deaprtment of Geography, Tokyo Metropolitan University), Akira Wada(Tokyo Institute of Technology), Yukihiro Takahashi(Department of Cosmosciences, Graduate School of Science, Hokkaido University), Chairperson:Yukihiro Takahashi(Department of Cosmosciences, Graduate School of Science, Hokkaido University), Akira Wada(Tokyo Institute of Technology), Jun Matsumoto(Deaprtment of Geography, Tokyo Metropolitan University)

9:45 AM - 10:00 AM

[O03-04] Why was coastal damage due to T1915 concentrated in the Port of Yokohama?

★Invited Papers

*Hitoshi Tamura1 (1.Port and Airport Research Institute)

Keywords:Typhoon1915, Coastal damage, Tokyo Bay

Typhoon Faxai (T1915), which occurred in September 2019, was one of the strongest typhoons on record to make landfall in the Tokyo metropolitan area and it caused extensive damage along the coast in Tokyo Bay. Two intriguing phenomena are reported by a post-event survey, which motivated this study. The first was that although the storm impacted the whole bay, significant damage was concentrated in a small area near the Port of Yokohama. The second was about the direction of the hazardous waves, which came from both the northeast and the southeast. The underlying wave dynamics that lead to these events were unknown. Here, we elucidate characteristics of the waves incident to the Port of Yokohama that caused a concentration of severe damage, and we clarify the mechanism responsible for the two disparate wave directions observed.