Tidal and Sediment Processes in Kojima Bay, Okayama, Japan

DOI

Bibliographic Information

Other Title
  • 岡山県児島湾における潮汐過程と底質移動

Abstract

Tidal resonances among dominant components are detected by means of spectral analyses of temperature records obtained in- and outside Kojima Bay, Okayama Prefecture. The resonant modes are diurnal, semi-diurnal, and higher constituents with frequencies of N cycles per day (N<6) and they are considered as longitudinal internal seiches or oscillation of the embayment scale. Near the closed end of the bay, the uni- and bi-nodal modes of lateral internal seiches are found to be dominant and the internal waves with periods of a few days are also noticed in the lower layer. Bed material around seiching nodes is expected to be coarser and the fact is reported in the reference. The finer sediment is moving with nutrients toward the mouth to the inland sea. The longer retention in the sediment is one of the biggest issues in the coastal environment.

Journal

  • Laguna

    Laguna 20 (0), 31-44, 2013

    Japanese Association for Estuarine Science

Keywords

Details 詳細情報について

  • CRID
    1390862623772018176
  • DOI
    10.60290/laguna.20.0_31
  • ISSN
    21852995
    13403834
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Allowed

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