Effect of Weir Constructed at River Mouth on Promotion of Bay Seawater Entrainment due to River Water

• KIMURA Haruyasu

  Faculty of Agriculture, Kochi University

• KOSAKI Satosi

  Faculty of Agriculture, Kochi University

• SINOHARA Taiki

  Faculty of Agriculture, Kochi University

Bibliographic Information

Other Title

• 河川水の湾海水運行促進に及ぼす河口堰の効果に関する研究
• 河川水の湾海水連行促進に及ぼす河口堰の効果に関する研究
• カセンスイ ノ ワン カイスイ レンコウ ソクシン ニ オヨボス カコウゼキ ノ コウカ ニ カンスル ケンキュウ

Abstract

In this study, we proposed a method, which promotes the entrainment of seawater by equipping the river mouth with the weir, and the effect was examined based on experimental and theoretical analysis. These results could be summarized as follows : (1) The energy, in which the river water entrains bay-seawater, consists of kinetic energy and potential energy of the river water following into the bay. The former is evaluated by densimetoric Froude number of the river water, and the latter is evaluated by the water-level difference of bay and river. (2) The effect of the water-level difference of bay and river on entraining the seawater in the bay is more effective as the kinetic energy of river water is smaller.

Journal

• Journal of Fisheries Engineering

  Journal of Fisheries Engineering 37 (3), 179-186, 2001

  The Japanese Society of Fisheries Engineering

Keywords

• Weir
• River water
• Entrainment
• Estuarine circulation
• Environmental improvement

Details

• CRID: 1390564237990157696
• NII Article ID: 10008273895
• NII Book ID: AN10278554
• DOI: 10.18903/fisheng.37.3_179
• ISSN: 21897131
• ISSN: 09167617
• NDL BIB ID: 5722005
• Web Site: https://agriknowledge.affrc.go.jp/RN/2030661195
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5722005
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • CiNii Articles
• Abstract License Flag: Disallowed