Flow geometry of overflowing tsunamis around coastal dykes

Takahito Mikami, Shunya Matsuba, Tomoya Shibayama

    研究成果: Conference contribution

    3 引用 (Scopus)

    抄録

    Japan has a long stretch of coastal dykes along its shoreline to protect against many types of coastal disasters. The 2011 Tohoku Tsunami caused serious damage to these coastal dykes along the long coastaline. One of the main reasons of the coastal dyke failure was overflowing tsunamis. Thus, after the 2011 Tohoku Tsunami, many studies on coastal dyke failure due to overflowing tsunamis have been conducted. The present study aimed to analyze the basic hydraulic characteristics of overflowing tsunamis on coastal dykes. First, the characteristics of overflowing tsunamis on coastal dykes observed during the 2011 tsunami were described using field data. The field data showed that there were different types of overflowing tsunamis during the 2011 tsunami and these types could be related to coastal dyke failure. Then, flow geometry were discussed based on the classification presented by Hom-ma (1940). Finally, the relationships between the hydraulic characteristics of overflowing tsunamis around coastal dykes (velocity field and pressure profile) and coastal dyke failure were discussed in detail by means of both laboratory investigations and numerical experiments.

    元の言語English
    ホスト出版物のタイトルProceedings of the Coastal Engineering Conference
    出版者American Society of Civil Engineers (ASCE)
    2014-January
    ISBN(印刷物)9780989661126
    出版物ステータスPublished - 2014
    イベント34th International Conference on Coastal Engineering, ICCE 2014 - Seoul, Korea, Republic of
    継続期間: 2014 6 152014 6 20

    Other

    Other34th International Conference on Coastal Engineering, ICCE 2014
    Korea, Republic of
    Seoul
    期間14/6/1514/6/20

    Fingerprint

    Tsunamis
    tsunami
    geometry
    Geometry
    dike
    Hydraulics
    hydraulics
    Disasters
    disaster
    shoreline
    damage

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Ocean Engineering
    • Oceanography

    これを引用

    Mikami, T., Matsuba, S., & Shibayama, T. (2014). Flow geometry of overflowing tsunamis around coastal dykes. : Proceedings of the Coastal Engineering Conference (巻 2014-January). American Society of Civil Engineers (ASCE).

    Flow geometry of overflowing tsunamis around coastal dykes. / Mikami, Takahito; Matsuba, Shunya; Shibayama, Tomoya.

    Proceedings of the Coastal Engineering Conference. 巻 2014-January American Society of Civil Engineers (ASCE), 2014.

    研究成果: Conference contribution

    Mikami, T, Matsuba, S & Shibayama, T 2014, Flow geometry of overflowing tsunamis around coastal dykes. : Proceedings of the Coastal Engineering Conference. 巻. 2014-January, American Society of Civil Engineers (ASCE), 34th International Conference on Coastal Engineering, ICCE 2014, Seoul, Korea, Republic of, 14/6/15.
    Mikami T, Matsuba S, Shibayama T. Flow geometry of overflowing tsunamis around coastal dykes. : Proceedings of the Coastal Engineering Conference. 巻 2014-January. American Society of Civil Engineers (ASCE). 2014
    Mikami, Takahito ; Matsuba, Shunya ; Shibayama, Tomoya. / Flow geometry of overflowing tsunamis around coastal dykes. Proceedings of the Coastal Engineering Conference. 巻 2014-January American Society of Civil Engineers (ASCE), 2014.
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