• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2000 Fiscal Year Final Research Report Summary

Summarizing of river mouth processing method based on comparative study on river mouth in Japan

Research Project

Project/Area Number 10305036
Research Category

Grant-in-Aid for Scientific Research (A).

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

Principal Investigator

TANAKA Hitoshi  Tohoku University, Graduate School of Eng., Professor, 大学院・工学研究科, 教授 (30171755)

Co-Investigator(Kenkyū-buntansha) UCHIJIMA Kunihide  Kitami Inst. Tech., Faculty of Engineering, Assoc Professor, 工学部, 助教授 (40003181)
MANO Akira  Tohoku University, Graduate School of Eng., Professor, 大学院・工学研究科, 教授 (50111258)
SAWAMOTO Masaki  Tohoku University, Graduate School of Eng., Professor, 大学院・工学研究科, 教授 (90016519)
TOHMA Satoshi  Muroran Inst. Tech., Faculty of Eng., Professor, 工学部, 教授 (00002915)
KUROKI Mikio  Hokkaido University, Graduate School of Eng., Assoc Professor, 大学院・工学研究科, 助教授 (50002001)
Project Period (FY) 1998 – 2000
KeywordsRiver mouth / River / Coast / Sedimentation / Littoral drift
Research Abstract

There have been several countermeasures against river mouth blockage due to high waves, such as training jetties, gate, culvert and artificial dredging. The relative advantages and disadvantages of each method are summarized based on a numerous field observations at various river mouths in Japan. Among these, it is noted that an artificial dredging method has quite less influence to adjacent coastal and estuarine environments. But, the presence of sand spit at a river mouth interrupts effluent flood flow into the sea. An appropriate flushing of the sand spit can reduce flooding intensity in the adjoining areas. Initial sand spit elevation influences initiation and development of flushing through a complex interaction of effluent flood discharge, tidal level and sediment transport processes. To investigate this complicated process, a numerical computation method is developed. After verification, it is used to investigate the influence of initial sand spit level on the time-variation of river stage and corresponding development of bed topography under the actions of both tide and high flood flow. Furthermore, sedimentation process around a river mouth is studied in connection with sand budget in a river basin and beach processes.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 田中仁,山本秀和: "河道掘削による感潮面積増加がもたらした河口水位変動特性・底生生物相の変化"海岸工学論文集. 47. 1136-1140 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 本堂亮,泉典洋,田中仁: "河口流出土砂の推積特性及び数値計算"海岸工学論文集. 47. 536-540 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tanaka,H.,Nagabayashi,H.and Yamauchi,K.: "Observation of wave Set-up height in a river mouth."Proc.27th International Conference on Coastal Engineering.. 27(印刷中). (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Itonaga,N.,Sana,A.,Tanaka,H.and Samad,M.A.: "Effect of grid spacing on the prediction of Sediment movement in a curved channel"Proc.4th International Conference on Hydro dynamics.. 1. 653-658 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Konno,O.,Mano,A.and Tahaka,H.: "Current and Water quality profile measurements for seawater intrusion at the Abukuma River Mouth"Proc.12th Congress of APD-IAHR. 545-552 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 青木伸一,小畑浩子: "汀線および前浜断面の短期変動に及ぼす異常潮位の影響"海岸工学論文集. 47. 586-590 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tanaka, H.and Yamamoto, H.: "Annual change of hydraulic characteristics and benthos distribution caused by dredging in a tidal compartment at a river mouth"Proceedings of Coastal Engineering. Vol.47 (in Japanese). 1136-1140 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hondo, A., Izumi, N.and Tanaka, H.: "Field observation and numerical computation of delta formation at a river mouth"Proceedings of Coastal Engineering. Vol.47 (in Japanese). 536-540 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tanaka, H., Nagabayashi, H.and Yamauchi, K.: "Observation of wave set-up height in a river mouth"Proceedings of 27th International Conference on Coastal Engineering. (in press). (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Itonaga, N., Sana, A., Tanaka, H.and Samad, M.A.: "Effect of grid spacing on the prediction of sediment movement in a curved channel"Proceedings of 4th International Conference on Hydrodynamics. Vol.1. 653-658 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Konno, O., Mano, A.and Tanaka, H.: "Current and water quality profile measurements for seawater intrusion at the Abukuma River mouth"Proceedings of 12th Congress of APDIAHR. 545-552 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Aoki, S.and Obata, H.: "Influence of unusual high sea level on short-term variation of shoreline and foreshore profile"Proceedings of Coastal Engineering. Vol.47 (in Japanese). 586-590 (2000)

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

URL: 

Published: 2002-03-26  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi