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ELUCIDATION OF THE DEVELOPMENT AND MOVEMENT MECHANISM OF GIANT CUSP AT RIVER MOUTH

Research Project

Project/Area Number 08650589
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 水工水理学
Research InstitutionTOHOKU UNIVERSITY

Principal Investigator

MANO Akira  FACULTY OF ENGINEERING GRADUATE SCHOOL TOHOKU UNIVERSITY,Professor, 大学院・工学研究科, 助教授 (50111258)

Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1997: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1996: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsLONGSHORE DRIFT / SAND SPIT / RlVER FLOW / GIANT CUSP / 阿武隈川 / 火焦線
Research Abstract

In order to get better knowledge of sediment transport near river mouths, the mechanism of development and movement in a giant cusp, which often appears at the Abukuma River mouth, has been studied. River flow and longshore currents are considered as the external forces for the transport. The efflux flow field of the river and longshore current field are given by the two dimensional jet model Longuet-Higgins (1970). Along the stream line of the linearly composed velocity field of two currents continuity equation of sediments is solved. Where Meyer-Peter Muller formula is used for the transport rate.
Based on the observed data of river flow and waves, seven computational cases have been performed for various wave height, wave direction and velocity of river flow. The computational results show that a narrow long cusp is formed at the weather side of the longshore current at the river mouth, especially for the height velocity of the river flow. This results agree well with the observation.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] Mano, Sawamoto: "Interactions between a sand barrier and flood terrace at the Abukuma River Mouth" Coastal Engineering. 25. 4505-4516 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 佐藤, 真野, 沢本: "阿武隈川河口の流送土砂" 海岸上学論文集. 43. 621-625 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Mano, Sugiki, Sawamoto: "Obsenvations and analyses of fine grains in flood flows at the Abukuma River mouth" J.Global Environ mental Eng.3. 53-63 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Hamada, Mano: "Threedimensional flow field measunement of brealcing wave" Coastal Dynamics. 4(印刷中). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Mano, Suzuki: "A dimenslonless parameter describiny sea cliff erosion" Coastal Engineering. 26(印刷中). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 福上, 真野, 沢本: "河口における大規模カスプ地形の生成機構" 海洋開発論文集. 14(印刷中). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] MANO AND SAWAMOTO: "INTERACTION BETWEEN SAND BARRIER AND FLOOD TERRACE AT THE ABLUKUMA RIVER MOUTH" COASTAL ENGINEERING. 25. 4505-4516 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] SATOU,MANO AND SAWAMOT: "SEDIMENT TRANSPORT AT THE ABUKUMA RIVER MOUTH" PROC.COASTAL ENGINEERING,JSCE. 43. 621-625 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] MANO,SUGIKI AND SAWAMOTO: "OBSERVATIONS AND ANALYSES OF FINE GRAINS IN FLOOD FLOWS AT THE ABUKUMA RIVER MOUTH" JOURNAL OF GLOBAL ENVIERONMENTAL ENGINEERING. 3. 53-63 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] HAMADA AND MANO: "THREE DIMENSIONAL FLOW FIELD MEASUREMENT OF BREAKING WAVE" COASTAL DYNAMICS. 4, (IN PRESS). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] MANO AND SUZUKI: "A DIMENSIONLESS PARAMETER DESCRIBING SEA CLIFF EROSION" COASTAL ENGINEERING. 26, (IN PRESS). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] FUKUSHI,MANO AND SAWAMOTO: "FORMATION MECHANISM OF GIANT CUSP AT A RIVER MOUTH" PROC.CIVIL ENGINEERING IN THE OCEAN. 14, (IN PRESS). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 福上・真野・澤本: "河口周辺における流れの計算" 東北地域災害科学研究. 34(印刷中). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 福上・真野・澤本: "河口における大規模カスプ地形の生成機構" 海洋開発論文集. 14(印刷中). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 佐藤芳信・真野明・沢本正樹: "阿武隈川河口の流速土砂" 海岸工学論文集. 43. 621-625 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Akira Mano and M.Sawamoto: "Interaction between a sand barrier and flood terrace at the Abukuma River Houth" Proc.Int.Conf.Coastal Engineering. 25(印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 成岡正祥・真野 明: "火焦点付近の波向き線解析" 東北地域災害科学研究. 33(印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 佐藤芳信・真野明・沢本正樹: "阿武隈川河口部の堆積土砂" 東北地域災害科学研究. 33(印刷中). (1997)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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