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

1997 Fiscal Year Final Research Report Summary

Environmental Impact due to the Effects of River Inflow Load in the Estuaries of Ariake Sea

Research Project

Project/Area Number 08458164
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 環境保全
Research InstitutionKUMAMOTO UNIVERSITY

Principal Investigator

TAKIKAWA Kiyoshi  Kumamoto University Dept.of Civil and Environmental Eng.Professor, 工学部, 教授 (80040450)

Co-Investigator(Kenkyū-buntansha) YAMADA Fumihiko  Kumamoto University Dept.of Civil and Environmental Eng.Research Associate, 工学部, 助手 (60264280)
TABUCHI Yoshinobu  Kumamoto University Dept.of Civil and Environmental Eng.Lecture, 工学部, 講師 (40037966)
HARADA Hiroyuki  Kumamoto University Dept.of Civil and Environmental Eng.Associate Professor, 工学部, 助教授 (20222234)
OHMOTO Terunori  Kumamoto University Dept.of Civil and Environmental Eng.Associate Professor, 工学部, 助教授 (30150494)
FURUKAWA Kenji  Kumamoto University Dept.of Civil and Environmental Eng.Professor, 工学部, 教授 (60029296)
Project Period (FY) 1996 – 1997
KeywordsEnvironment of Ariake Sea / Environment of Estuary / Effects of River Inflow-Load / Tidal Flat / Denitrification of Tidal Flat / Tidal Current / Air-Born Sea-Salt / Suspended Sediment
Research Abstract

(1)Numerical analysis of tidal flows and ocean waves were performed for all of Ariake-sea and the both estuary of Sirakawa and Midorikawa rivers. Velocity field characteristics and concentration distributions of suspended solids in those areas were evaluated as a function of tidal levels and river inflow rates. Also, numerical methods for analyzing the form of tidelands and their gullies were developed.
(2)Long term (1924-1990) variation of the tidal flat topography measured by Kumamoto prefecture was considered. In addition, tidal flow and concentration of suspended solids were measured over the tidal flat, which vertical characteristics were discussed.
(3)The Pollutant levels of sediments in the estuaries of Shirakawa and Midorikawa rivers were discussed through the ecological survey results of benthos.
(4)The current study presents the results of chemical analyzes of the potential denitrification and nitrification rates, COD,H_2S in samples collect from 30 study plots located in a grid … More (200m*200m) in Ariake-sea. Four sampling points located at different distance and Different depth, near estuary-far estuary, from Midorikawa river, were selected in order to investigation the water quality in Ariake coastal.
(5)The in-vitro effect of Nereis Divesicolor has studied in PVC tubes filled with a coastal marine sediment defaunated by sieving. The aim of this experiment was to determine the effect of sediment defaunation of denitrification.
(6)Field measurements of the space distribution of air-born sea-salt were carried out at the Yokosima reclamation by the drainage field in Tamana county. Numerical models that take into account fall velocities of sea-salt particles and sea-salt concentration diffusion due to rainfall effects were developed. Distribution characteristics of the air-born sea-salt as effected by meteorological conditions were also investigated. Furthermore, the investigation of the perceptions and awareness about environmental factors to inhabitants living in coastal area were performed by using a questionnaire survey. Less

  • Research Products

    (30 results)

All Other

All Publications (30 results)

  • [Publications] 滝川 清: "有明海の流況と環境特性に関する研究" 熊本大学地域共同研究センター技術セミナー概要集. No.10. 53-58 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 滝川 清: "有明海域における流況特性と環境特性について" 平成9年度土木学会西部支部研究発表会概要集 第II部門. 366-367 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 滝川 清: "有明海の流動場に関する研究" 熊本大学地域共同研究センター技術セミナー概要集. No.9. 57-62 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 滝川 清: "河口域での陸水流入に伴う流況特性解析" 平成8年度土木学会西部支部研究発表会概要集 第II部門. 358-359 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 滝川 清: "有明海沿岸域での飛来塩分特性と気象特性に関する研究" 平成9年度土木学会西部支部研究発表会概要集 第II部門. 352-353 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 滝川 清: "横島干拓地における飛来塩分特性解析とその防御策について" 熊本大学地域共同研究センター技術セミナー概要集. No.10. 47-52 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 山田 文彦: "降雨による飛来塩分濃度の減衰(希釈)効果に関する研究" 第52回土木学会年次学術講演会 第II部門. 130-131 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 山田 文彦: "有明海沿岸域における飛来塩分の拡散機構とその数値モデルに関する研究" 海岸光学論文集. 第44(2). 1216-1220 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 滝川 清: "熊本県沿岸域における飛塩量特性" 平成8度土木学会西部支部研究発表会概要集 第II部門. 280-281 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 滝川 清: "有明海域の飛来塩分量特性に関する研究" 熊本大学地域共同研究センター技術セミナー概要集. No.9. 51-56 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 滝川 清: "内海沿岸域における飛来塩分特性とその対策について" 海岸工学論文集. 第43(2). 1176-1180 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 大本 照憲: "緑川河口域における流れと干潟の相互作用について" 平成9度土木学会西部支部研究発表会概要集 第II部門. 248-249 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 原田 浩幸: "干潟底泥の脱窒機能評価に関する基礎的実験" 熊本大学バイオサイエンスシンポジウム. 21 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 原田 浩幸: "干潟底生生物が底泥の脱窒機能に及ぼす影響" 日本水環境学会九州支部研究発表会講演要旨集. 64-65 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 原田 浩幸: "干潟底泥の脱窒機能について" 日本水環境学会九州支部研究発表会講演要旨集. 76-77 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 原田 浩幸: "熊本県干潟域の浄化能に関する研究" 平成8度土木学会西部支部研究発表会概要集 第VII部門. 918-919 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Takikawa: "Characteristics of Tidal Current and Environment in Ariake Sea" Proc.10^<th> Technical Seminar of Cooperative Research Center Kumamoto University. 53-58 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Takikawa: "Tidal Current and Environment in Ariake Sea" Proc.Annu.Conf.Western Branch of JSCE. II. 366-367 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Takikawa: "Tidal Current in Ariake Sea" Proc.9^<th> Technical Seminar of Cooperative Research Center Kumamoto University. 57-62 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Takikawa: "Numerical Analysis of Tidal Current due to River Inflow in Estuary of Ariake Sea" Proc.Annu.Conf.Western Branch of JSCE. II. 358-359 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Takikawa: "Characteristics of Air-Born Sea-Salt and Atmospheric Phenomena in the Coast of Ariake Sea" Proc.Annu.Conf.Western Branch of JSCE. II. 352-353 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Takikawa: "Numerical Analysis of the Sea-Salt concentration and it's Protective System in Yokoshima Reclamation Land" Proc.10^<th> Technical Seminar of Cooperative Research Center Kumamoto University. 47-52 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] F.Yamada: "Study on a Diffusion Mechanism and Numerical Analysis of a Sea-Salt Concentration by a Rain Fall" Proc.of Coastal Engineering, JSCE. Vol.44(2). 1216-1220 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Takikawa: "Characteristics of Air-Born Sea-Salt in the Coastal Area of Kumamoto Prefecture" Proc.Annu.Conf.Western Branch of JSCE. II. 280-281 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Takikawa: "Characteristics of Wind-Brown Sea-Salt in Ariake Sea" Proc.9^<th> Technical Seminar of Cooperative Research Center Kumamoto University. 51-56 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Takikawa: "Characteristics of Air-Born Sea-Salt in Inland Coastal Area" Proc.of Coastal Engineering, JSCE. Vol.43(2). 1176-1180 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Oomoto: "Interaction of Tidal-Current and Tidal-Flat in the Midorikawa Estuary" Proc.Annu.Conf.Western Branch of JSCE. II. 248-249 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Harada, K.Furukawa, K.Takikawa: "Potential of Denitirificationrates of Marine Sediment" Annual Meeting of Water Environment Kyushu Branch. 76-77 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Harada, K.Furukawa, K.Takikawa: "Effect of bioturbation on Denitirification in a Marine Sediment" Annual Meeting of Water Environment Kyushu Branch. 64-65 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Harada, K.Furukawa, K.Takikawa: "Effect of bioturbation on Denitirification in Ariake Costal Sediment. Prelimerly result" Bio-seience symposium in Kumamoto Univ.21 (1998)

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

URL: 

Published: 1999-03-16  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi