Breakwater damage in Okushiri Port due to the Hokkaido Nansei-Oki earthquake tsunami

Katsutoshi Kimura; Yuzo Mizuno; Hiroichi Tsuruya; Yasuyuki Nakagawa

doi:10.1061/9780784402429.364

Breakwater damage in Okushiri Port due to the Hokkaido Nansei-Oki earthquake tsunami

Katsutoshi Kimura, Yuzo Mizuno, Hiroichi Tsuruya, Yasuyuki Nakagawa

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

A tsunami caused by the Hokkaido-Nansei-oki earthquake struck Okushiri Island and the southwest coast of Hokkaido damaging many port facilities. This paper describes typical breakwater damage at Okushiri Port and the applicability of Tanimoto's formula for tsunami wave forces on vertical walls based on prototype failure analyses and the result of numerical simulations. The armor stability and the rubble mound scourings were examined from the results of 3-D model tests at a scale of 1/15. The damage patterns at the narrow opening of breakwaters were reproduced by the tests. The necessary weight of armor blocks and foot-protection blocks for breakwater heads were calculated by the C.E.R.C. formula using averaged flow speed at the peak of tsunami.

Original language	English
Pages (from-to)	4676-4688
Number of pages	13
Journal	Proceedings of the Coastal Engineering Conference
Volume	4
DOIs	https://doi.org/10.1061/9780784402429.364
Publication status	Published - 1997
Externally published	Yes
Event	Proceedings of the 1996 25th International Conference on Coastal Engineering. Part 1 (of 4) - Orlando, FL, USA Duration: Sept 2 1996 → Sept 6 1996

All Science Journal Classification (ASJC) codes

Ocean Engineering

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10.1061/9780784402429.364

Cite this

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title = "Breakwater damage in Okushiri Port due to the Hokkaido Nansei-Oki earthquake tsunami",

abstract = "A tsunami caused by the Hokkaido-Nansei-oki earthquake struck Okushiri Island and the southwest coast of Hokkaido damaging many port facilities. This paper describes typical breakwater damage at Okushiri Port and the applicability of Tanimoto's formula for tsunami wave forces on vertical walls based on prototype failure analyses and the result of numerical simulations. The armor stability and the rubble mound scourings were examined from the results of 3-D model tests at a scale of 1/15. The damage patterns at the narrow opening of breakwaters were reproduced by the tests. The necessary weight of armor blocks and foot-protection blocks for breakwater heads were calculated by the C.E.R.C. formula using averaged flow speed at the peak of tsunami.",

author = "Katsutoshi Kimura and Yuzo Mizuno and Hiroichi Tsuruya and Yasuyuki Nakagawa",

year = "1997",

doi = "10.1061/9780784402429.364",

language = "English",

volume = "4",

pages = "4676--4688",

journal = "Proceedings of the Coastal Engineering Conference",

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note = "Proceedings of the 1996 25th International Conference on Coastal Engineering. Part 1 (of 4) ; Conference date: 02-09-1996 Through 06-09-1996",

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T1 - Breakwater damage in Okushiri Port due to the Hokkaido Nansei-Oki earthquake tsunami

AU - Kimura, Katsutoshi

AU - Mizuno, Yuzo

AU - Tsuruya, Hiroichi

AU - Nakagawa, Yasuyuki

PY - 1997

Y1 - 1997

N2 - A tsunami caused by the Hokkaido-Nansei-oki earthquake struck Okushiri Island and the southwest coast of Hokkaido damaging many port facilities. This paper describes typical breakwater damage at Okushiri Port and the applicability of Tanimoto's formula for tsunami wave forces on vertical walls based on prototype failure analyses and the result of numerical simulations. The armor stability and the rubble mound scourings were examined from the results of 3-D model tests at a scale of 1/15. The damage patterns at the narrow opening of breakwaters were reproduced by the tests. The necessary weight of armor blocks and foot-protection blocks for breakwater heads were calculated by the C.E.R.C. formula using averaged flow speed at the peak of tsunami.

AB - A tsunami caused by the Hokkaido-Nansei-oki earthquake struck Okushiri Island and the southwest coast of Hokkaido damaging many port facilities. This paper describes typical breakwater damage at Okushiri Port and the applicability of Tanimoto's formula for tsunami wave forces on vertical walls based on prototype failure analyses and the result of numerical simulations. The armor stability and the rubble mound scourings were examined from the results of 3-D model tests at a scale of 1/15. The damage patterns at the narrow opening of breakwaters were reproduced by the tests. The necessary weight of armor blocks and foot-protection blocks for breakwater heads were calculated by the C.E.R.C. formula using averaged flow speed at the peak of tsunami.

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JF - Proceedings of the Coastal Engineering Conference

T2 - Proceedings of the 1996 25th International Conference on Coastal Engineering. Part 1 (of 4)

Y2 - 2 September 1996 through 6 September 1996

ER -

Breakwater damage in Okushiri Port due to the Hokkaido Nansei-Oki earthquake tsunami

Abstract

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