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Natural lakes in Hokkaido

Research Project

Project/Area Number 05555147
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 水工水理学
Research InstitutionChuo University

Principal Investigator

YAMADA Tadashi  Chuo Univ., Scien.& Eng., Prof., 理工学部, 教授 (80111665)

Co-Investigator(Kenkyū-buntansha) YAMASHITA Toshihiko  Hokkaido Univ., Eng., Ass.Pro., 工学部, 助教授 (80143692)
UCHIJIMA Kunihide  Kitami Inst.of Eng., Ass.Pro., 工学部, 助教授 (40003181)
SADO Kimiaki  Kitami Inst.of Eng., Eng., Pro., 工学部, 教授 (90003201)
HASEGAWA Kazuyoshi  Hokkaido Univ., Eng., Ass., 工学部, 助手 (70001328)
FUJITA Mutsuhiro  Hokkaido Univ., Eng., Prof., 工学部, 教授 (80001139)
Project Period (FY) 1993 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥7,100,000 (Direct Cost: ¥7,100,000)
Fiscal Year 1995: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1994: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1993: ¥4,000,000 (Direct Cost: ¥4,000,000)
KeywordsAoshio / Aoko / fresh water / lake environment / eutrophication / saline wedge / flow / stratification / 自然湖沼の開発の可能性 / 淡水化工法 / 融雪出水 / 塩水の吐き出し / 管理運用システム / 2成層流体 / 塩水くさび / 大型回転水槽
Research Abstract

This study was carried out for the purpose of making clear the hydrogical and hydraulic properties of Lake abashiri which located in northeast of Hokkaido Island in Japan, and suggesting purification method of the lake. From the field observations in 1993. We concluded that ecological system and environment of the lake have been influenced by two-layr structure of fresh and salt water and eutrophication in the lake. Based on these results and numerical analysis, we predicted the long-term behavior of the salinecline, and investigated behaviors of jet induced by river flow into the lake in 1994. We found that the salinecline gradually has been rising, closely linked with decreasing of annual precipitation in the Abashiri Basin in these 60 years. It is necessary to consider coriolis force in small sized lake like Lake Abashiri. In 1995, we made clear the relationships between two-layr structures and flow of the lake, and suggested methods for freshwater in the lake. We found that the flow around center of the lake formed four-layr structure in vertical direction, influenced by dense layr structure, wind, formation, coriolis force and river. Aoshio occured with the strong wind which blows for a long time. In order to control Aoshio, it is effective descending the boundary surface between fresh and salt water. We confirmed that it is necessary to induce artificial method for fresh water.

Report

(4 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • 1993 Annual Research Report
  • Research Products

    (29 results)

All Other

All Publications (29 results)

  • [Publications] 山田 正: "網走湖における塩淡二成層の形成と挙動に関する研究" 水工学論文集. 40. 589-594 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 山田 正: "内部波の浅水変形に関する基礎的研究" 水文・水資源学会1995年研究発表会要旨集. 128-129 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 山田 正: "網走湖における塩淡境界の変動に関する研究" 土木学会第50回年次学術講演会講演概要集. 2-A. 520-521 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 山田 正: "回転系の流れの場における地形の影響について" 水文・水資源学会1994年研究発表会要旨集. 324-325 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 山田 正: "融雪期における網走湖の塩淡境界の挙動に関する研究" 水文・水資源学会1994年研究発表会要旨集. 360-361 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 山田 正: "塩淡二成層を形成している網走湖の塩水流出入に関する研究" 水工学論文集. 37. 305-312 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tadashi Yamada: "Formation and behavior of the two-layrs structure of salt and fresh water in Lake Abashiri" Annual journal of hydraulic engineering, JSCE. Vol.40. 589-594 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tadashi Yamada: "Deformation of shape evolution of internal waves" Proceedings of 1995 annual conference, Japan Society of Hydrology and Water Resources. 128-129 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tadashi Yamada: "Behavior of the boundary surface between fresh and salt water in Lake Abashiri" Proceedings of the 50th annual conference of the Japan Society of Civil Engineers. 2-A. 520-521 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tadashi Yamada: "Influence of landscape on rotational flow" Proceedings of 1994 annual conference, Japan Society of Hydrology and Water Resources. 324-325 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tadashi Yamada: "Behavior of the boundary surface between fresh and salt water in Lake Abashiri during snowmelt" Proceedings of 1994 annual conference, Japan Society of Hydrology and Water Resources. 360-361 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tadashi Yamada: "Long and short term behavior of Lake Abashiri with two layrs of fresh and salt water" Annual journal of hydraulic engineering, JSCE. Vol.37. 305-312 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 山田正: "網走湖における塩淡二成層の形成と挙動に関する研究" 水工学論文集. 40. 589-594 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 山田正: "網走川における塩水遡上に関する研究" 第23回土木学会関東支部技術研究発表会講演概要集. 200-201 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 山田正: "閉鎖性水域に流入する遅い流れの挙動に関する実験的研究" 第23回土木学会関東支部技術研究発表会講演概要集. 326-327 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 山田正: "内部波の浅水変形に関する基礎的研究" 水文・水資源学会1995年研究発表会要旨集. 128-129 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 山田正: "網走湖における塩淡境界の変動に関する研究" 土木学会第50回年次学術講演会講演概要集. 2-A. 520-521 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 山田正: "急拡部をもつ開水路流れの数値解析" 土木学会第50回年次学術講演会講演概要集. 2-A. 330-331 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 山田正: "回転系の流れの場における地形の影響について" 水文・水資源学会1994年研究発表会要旨集. 324-325 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 山田正: "融雪期における網走湖の塩淡境界の挙動に関する研究" 水文・水資源学会1994年研究発表会要旨集. 360-361 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 山田正: "疑似降雨モデルを用いた網走湖における塩淡境界長期変動に関する研究" 第49回土木学会年次学術講演会講演概要集. 2-A. 448-449 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 山田正: "内部波における緩勾配方程式と浅水変形に関する基礎的研究" 第22回土木学会関東支部技術研究発表会講演概要集. 100-101 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 山田正: "小規模スケールの水域における回転効果と地形の影響に関する実験的研究" 第22回土木学会関東支部技術研究発表会講演概要集. 132-133 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 山田 正: "Short-and Long-term Behavior of Salicline in Lake Abashiri" 寒地河川シンポジウム講演集in Denver. 291-296 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 山田 正: "塩淡2成層を形成している網走湖の塩水の流出入に関する研究" 土木学会水工学論文集. 37. 305-312 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 山田 正: "北海道網走湖への海水流入に関する現地観測" 水文・水資源学会1993年研究発表会要旨集. A-1. 127-134 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 山田 正: "網走湖の塩淡境界と網走川の海水遡上に関する現地観測" 第48回土木学会年次学術講演会講演概要集. 128-129 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 山田 正: "網走湖における塩淡境界の長期変化に関する研究" 第48回土木学会年次学術講演会講演概要集. 620-621 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 山田 正: "大型回転水槽を用いた回転流体に関する基礎的研究" 第21回土木学会関東支部技術研究発表会講演概要集. 37. 154-155 (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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