TY - GEN
T1 - Numerical simulation of beach changes on seisho coast by typhoon jongdari
AU - Nishida, Y.
AU - Shibayama, T.
AU - Takabatake, T.
AU - Esteban, M.
N1 - Funding Information:
The authors are grateful to Ministry of Land, Infrastructure, Transport and Tourism for providing bathymetry survey data and wave observation records. The work was financially supported by Penta-Ocean Construction Co., Ltd. The present work was performed as a part of activities of Research Institute of Sustainable Future Society, Waseda Research Institute for Science and Engineering, Waseda University.
Publisher Copyright:
© Springer Nature Singapore Pte Ltd. 2020.
PY - 2020
Y1 - 2020
N2 - The Seisho coastline, in Kanagawa Prefecture, Japan, has historically suffered the consequences of the many typhoons that traverse the area. In 2018, this part of the country was damaged by Typhoon Jongdari, which was a very rare typhoon that moved from the east to the west of the Japanese main island of Honshu. The goal of this study is to attempt to reproduce the beach changes that took place along the Seisho coast during the passage of this typhoon by means of a numerical simulation. First, the authors simulated the wavefield by using the SWAN model, with the maximum simulated significant wave height (5.25 m at 21:10 on 28th July) being in good agreement with observed values (5.14 m). Mean wave period and wave direction also showed close agreement with observed records. The XBeach model was then used to simulate the hydrodynamic and morphodynamic processes on Seisho coast, which indicated significant cross-shore sediment transport near the shoreline, resulting in shoreline erosion. This matched bathymetric surveys that were carried out by the government some months after the event.
AB - The Seisho coastline, in Kanagawa Prefecture, Japan, has historically suffered the consequences of the many typhoons that traverse the area. In 2018, this part of the country was damaged by Typhoon Jongdari, which was a very rare typhoon that moved from the east to the west of the Japanese main island of Honshu. The goal of this study is to attempt to reproduce the beach changes that took place along the Seisho coast during the passage of this typhoon by means of a numerical simulation. First, the authors simulated the wavefield by using the SWAN model, with the maximum simulated significant wave height (5.25 m at 21:10 on 28th July) being in good agreement with observed values (5.14 m). Mean wave period and wave direction also showed close agreement with observed records. The XBeach model was then used to simulate the hydrodynamic and morphodynamic processes on Seisho coast, which indicated significant cross-shore sediment transport near the shoreline, resulting in shoreline erosion. This matched bathymetric surveys that were carried out by the government some months after the event.
KW - SWAN
KW - Sediment transport
KW - Typhoon
KW - XBeach
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U2 - 10.1007/978-981-15-0291-0_69
DO - 10.1007/978-981-15-0291-0_69
M3 - Conference contribution
AN - SCOPUS:85106698591
SN - 9789811502903
T3 - APAC 2019 - Proceedings of the 10th International Conference on Asian and Pacific Coasts
SP - 503
EP - 508
BT - APAC 2019 - Proceedings of the 10th International Conference on Asian and Pacific Coasts
A2 - Viet, Nguyen Trung
A2 - Tung, Tran Thanh
A2 - Xiping, Dou
PB - Springer
T2 - 10th International Conference on Asian and Pacific Coasts, APAC 2019
Y2 - 25 September 2019 through 28 September 2019
ER -