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Tsunami ascending in rivers as an undular bore

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Abstract

At time of the 1983 Japan Sea tsunami, waves in the form of a bore ascended many rivers. In some cases, bores had the form of one initial wave with a train of smaller waves, and in other cases, such a wave train did not appear and only a step with a flat water surface behind was observed. In the present study, it is clarified that both undular-type and nonundular-type bores can be recognized as solutions of the KdV-Burger's equation which was introduced by Johnson in 1972. Numerically obtained analytical solutions and results of laboratory experiments are compared.

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Authors and Affiliations

  1. Earthquake Research Institute, University of Tokyo, Yayoi 1-1-1, 113, Bunkyo-Ku, Tokyo, Japan

    Yoshinobu Tsuji, Takashi Yanuma, Isao Murata & Chizuru Fujiwara

Authors
  1. Yoshinobu Tsuji
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  2. Takashi Yanuma
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  3. Isao Murata
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  4. Chizuru Fujiwara
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Tsuji, Y., Yanuma, T., Murata, I. et al. Tsunami ascending in rivers as an undular bore. Nat Hazards 4, 257–266 (1991). https://doi.org/10.1007/BF00162791

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  • DOI: https://doi.org/10.1007/BF00162791

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