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  1. 防災科研関係論文

Tsunami inundation modeling of the 2011 Tohoku earthquake using three-dimensional building data for Sendai, Miyagi prefecture, Japan

https://nied-repo.bosai.go.jp/records/2752
https://nied-repo.bosai.go.jp/records/2752
627ed88f-cba1-4b03-9ff4-77f9df17a622
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 en
タイトル Tsunami inundation modeling of the 2011 Tohoku earthquake using three-dimensional building data for Sendai, Miyagi prefecture, Japan
言語
言語 eng
著者 Toshitaka Baba

× Toshitaka Baba

en Toshitaka Baba

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Narumi Takahashi

× Narumi Takahashi

en Narumi Takahashi

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Yoshiyuki Kaneda

× Yoshiyuki Kaneda

en Yoshiyuki Kaneda

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Yasuyuki Inazawa

× Yasuyuki Inazawa

en Yasuyuki Inazawa

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Mariko Kikkojin

× Mariko Kikkojin

en Mariko Kikkojin

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抄録
内容記述タイプ Other
内容記述 In conventional modeling of tsunami inundation, based on nonlinear shallow water theory in a finite-difference scheme, the effect of buildings and structures is represented by a bottom friction parameter rather than by three-dimensional (3D) building shapes. But large, strong buildings should offer direct protection against an incoming tsunami, like seawalls. In this study, therefore, we incorporated 3D building data obtained from lidar measurements in modeling the tsunami from the 2011 Tohoku earthquake at the port of Sendai, Miyagi Prefecture, Japan, and compared the results from conventional modeling based on a digital elevation model. In the model incorporating 3D building data, the maximum inundation height was greater than in the conventional model at the front of coastal buildings and structures and smaller behind them. High-velocity currents appeared in the corridors between these buildings, and the tsunami inundation area was smaller in the residential zone because of the obstacles that buildings presented to the tsunami. These results mean that solid buildings and structures have a significant influence on the propagation of tsunamis on land. The effects of the 3D shapes of buildings and structures should be further investigated for detailed tsunami hazard assessments in urban areas.
言語 en
書誌情報 en : Advances in Natural and Technological Hazards Research

巻 35, p. 89-98, 発行日 2014
出版者
言語 en
出版者 Springer Netherlands
ISSN
収録物識別子タイプ ISSN
収録物識別子 2213-6959
DOI
関連識別子 10.1007/978-94-007-7269-4_3
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