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2004 Fiscal Year Final Research Report Summary

A quasi-3D numerical modeling of beach scarp generation due to longshore sediment transport mechanism.

Research Project

Project/Area Number 14550514
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 水工水理学
Research InstitutionKagoshima University

Principal Investigator

NISHI Ryuichiro  Kagoshima Univ., Faculty of Engineering, Associate Professor, 工学部, 助教授 (30189253)

Project Period (FY) 2002 – 2004
KeywordsBeach and dune scarp / shoreline change / beach erosion / filed study / numerical simulation / shore protection works
Research Abstract

Beach and dune scarps can be seen often after a typhoon, hurricane and northeaster. In general, beach scarp and resulted shoreline recession are computed using a cross-shore sediment transport model in EU countries and US. On the other hand, beach scarp due to longshore sediment transport mechanics has been often estimated using N-line model in Japan. There is still unknown factor to distinguish which process is dominant to cause beach and dune scarp in natural condition. Here, field studies were conducted after typhoons and evidence to proof that at least longshore process could cause beach scarp in sandy beach. Then, a quasi 3-D model to simulate a beach scarp generation is developed based on longshore sediment transport calculation and resulted shoreline position. The new concept is applied to an idealized bathymetry condition.

  • Research Products

    (2 results)

All 2005

All Journal Article (2 results)

  • [Journal Article] 浜崖形成予測のための擬似三次元海浜変形モデルの開発と応用に関する基礎的研究2005

    • Author(s)
      西 隆一郎, 山口博, 細川和範
    • Journal Title

      第30回海洋開発シンポジウム論文集 (印刷中)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] A quasi-3D numerical modeling of beach and dune scarp generation due to longshore sediment transport mechanism.2005

    • Author(s)
      Ryuichiro Nishi, Hiroshi Yamaguchi, Kazunori Hosotani
    • Journal Title

      Proceedings of the 30'th Ocean Development Symposium (in printing)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2006-07-11  

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