Numerical simulation of beach changes on seisho coast by typhoon jongdari

Y. Nishida, T. Shibayama, T. Takabatake, M. Esteban

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationAPAC 2019 - Proceedings of the 10th International Conference on Asian and Pacific Coasts
EditorsNguyen Trung Viet, Tran Thanh Tung, Dou Xiping
PublisherSpringer
Pages503-508
Number of pages6
ISBN (Print)9789811502903
DOIs
Publication statusPublished - 2020
Event10th International Conference on Asian and Pacific Coasts, APAC 2019 - Hanoi, Viet Nam
Duration: 2019 Sep 252019 Sep 28

Publication series

NameAPAC 2019 - Proceedings of the 10th International Conference on Asian and Pacific Coasts

Conference

Conference10th International Conference on Asian and Pacific Coasts, APAC 2019
Country/TerritoryViet Nam
CityHanoi
Period19/9/2519/9/28

Keywords

  • SWAN
  • Sediment transport
  • Typhoon
  • XBeach

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology, Evolution, Behavior and Systematics
  • Ecology

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