EFFECTS OF ENTRANCE LENGTH OF SIDE-POCKET IN OPEN CHANNEL FLOW ON EVACUATION BEHAVIOUR OF <i>ZACCO PLATYPUS</i> IN FLOODS

• ONITSUKA Kouki

  九州工業大学大学院 建設社会工学研究系

• AKIYAMA Juichiro

  九州工業大学大学院 建設社会工学研究系

• SHISHIDO Akira

  日鉄住金テックスエンジ株式会社

• TAKEDA Tomohide

  九州工業大学大学院 工学府建設社会工学専攻

Bibliographic Information

Other Title

• 増水時のオイカワの避難行動に及ぼすわんど開口部長さの影響

Abstract

 In the environmental field of river, there is a problem that evacuation space for fish is scant. By previous investigation, it is figured out that fish evacuate to the low velocity zone. But the relationship between evacuation behavior and river structure is not fully elucidated. The porpose of this study is to make clear that geometric structure of effective wando which is important as a evacuation space. Side-pocket was set up and the entrance length of it was methodically changed. The swimming behaviors of Zacco Platypus (Oikawa) in floods were recorded with digital video camera. Changes in behavior doe to the difference of the entrance length were investigated. It is found that Zacco Platypus aggressively evacuated when the entrance length was 8 times longer than Zacco Platypus.

Journal

• Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)

  Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 72 (6), II_143-II_148, 2016

  Japan Society of Civil Engineers

Keywords

• Zacco Platypus
• open channel flow
• flood
• evacuation behaviour
• wando

Details

• CRID: 1390282680334552320
• NII Article ID: 130005589388
• DOI: 10.2208/jscejer.72.ii_143
• ISSN: 21856648
• Web Site: https://www.jstage.jst.go.jp/article/jscejer/72/6/72_II_143/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed