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Relationships among groundwater flow system, discharge types, and nitrate attenuation zone in upland-lowland boundary region

Research Project

Project/Area Number 14380030
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 自然地理学
Research InstitutionUniversity of Tsukuba

Principal Investigator

TASE Norio  University of Tsukuba, Graduate School of Life and Environmental Sciences, Professor, 大学院・生命環境科学研究科, 教授 (40133011)

Co-Investigator(Kenkyū-buntansha) TSUJIMURA Maki  University of Tsukuba, Graduate School of Life and Environmental Sciences, Assistant Professor, 大学院・生命環境科学研究科, 講師 (10273301)
SUGITA Fumi  Chiba University of Commerce, Associate Professor, 商経学部, 助教授 (40275962)
Project Period (FY) 2002 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥8,600,000 (Direct Cost: ¥8,600,000)
Fiscal Year 2004: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2003: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2002: ¥6,800,000 (Direct Cost: ¥6,800,000)
Keywordsnitrate nitrogen / groundwater contamination / attenuation / denitrification / groundwater flow / upland / wetland / spring / 地下水
Research Abstract

Transitional zones from upland to lowland have been focused as an important attenuation zone of nitrate in groundwater. We have been studying relationships among geology, landform, groundwater flow and nitrate concentration, in order to clarify nitrate fate in a typical small hillslope-wetland zone in Tsukuba, through intensive observation network of wells and piezometers.
The results are summarized as follows :
1)Groundwater flow system in this region is controlled basically by landform, that is, water table is consistent with landform.
2)High nitrate(-100mg/L) in groundwater is attenuated near or below the black clay layer distributed in the small valley bottom. The attenuation zone or front is distributed like horseshoe-shaped along the valley bottom.
3)The attenuation process is attributed to denitrification by organic carbon as an electron donor under anaerobic condition. The black clay layer with high organic contents supplies dissolved organic carbon and reduced groundwater.
4)The attenuation front moves forward or backward with low or high hydraulic gradients in the black clay layer. That is, when downward flow is dominant in the black clay layer to the sand layer, attenuation occurs actively and the front moves backward or upstream.
5)There are three types of spring, that is, seepage, upwelling, and pipe-flow types in this region. The nitrate concentrations are generally higher in pipe-flow type than others. The seepage type is subject to natural attenuation.

Report

(4 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • Research Products

    (21 results)

All 2005 2004 2003 Other

All Journal Article (13 results) Publications (8 results)

  • [Journal Article] Role of small valleys and wetlands in attenuation of arural-area groundwater contamination2005

    • Author(s)
      Gallardo, A., Tase, N.
    • Journal Title

      IAHS Publication 294

      Pages: 86-92

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Role of small valleys and wetlands in attenuation of a rural-area groundwater contamination.2005

    • Author(s)
      Gallardo, A., Tase, N.
    • Journal Title

      IAHS Publication 294

      Pages: 86-92

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Role of small valleys and wetlands in attenuation of a rural-area groundwater contamination2005

    • Author(s)
      Gallardo, A., Tase, N.
    • Journal Title

      IAHS Publication 294

      Pages: 86-92

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 茨城県筑波台地、斜面-湿地プロットでの地下水帯における硝酸イオンの還元場2004

    • Author(s)
      井岡聖一郎, 田瀬則雄
    • Journal Title

      地下水学会誌 46・2

      Pages: 131-144

    • NAID

      10012967147

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] 台地末端部における硝酸イオン浄化ゾーンの3次元分布2004

    • Author(s)
      菅原洋平, 田瀬則雄
    • Journal Title

      地下水・土壌汚染とその防止対策に関する研究集会 第10回講演集

      Pages: 383-390

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] 硝酸・亜硝酸性窒素による地下水汚染の現状と動向2004

    • Author(s)
      田瀬則雄
    • Journal Title

      環境管理 40・3

      Pages: 47-55

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] 地下水中の硝酸イオンに対するシルト、粘土層の役割-水理的バリアか生物化学的バリアか-2004

    • Author(s)
      井岡聖一郎, 田瀬則雄
    • Journal Title

      地下水学会誌 46・1

      Pages: 37-50

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Nitrate reduction zone in groundwater at a slope-wetland plot in Tsukuba upland, Ibaraki Prefecture2004

    • Author(s)
      Ioka, S., Tase, N.
    • Journal Title

      Jour.of Groundwater Hydrology 46(2)

      Pages: 131-144

    • NAID

      10012967147

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Three-dimensional distribution of nitrate attenuation zone.2004

    • Author(s)
      Sugawara, Y., Tase, N.
    • Journal Title

      Proc.Of the Tenth Symp.On Groundwater and Soil Contami-Nation and Remediation

      Pages: 383-390

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Groundwater contamination by nitrate and nitrite2004

    • Author(s)
      Tase, N.
    • Journal Title

      Environmental Management 40(3)

      Pages: 47-55

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] The role of silt and clay layer on nitrate in groundwater -hydraulic barrier or biochemical barrier.2004

    • Author(s)
      Ioka, S., Tase, N.
    • Journal Title

      Jour.of Groundwater Hydrology 46(1)

      Pages: 37-50

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 硝酸・亜硝酸性窒素による水質汚染の現状と動向2003

    • Author(s)
      田瀬則雄
    • Journal Title

      水環境学会誌 26・9

      Pages: 546-550

    • NAID

      10011755584

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Present situation and research on nitrate contamination in groundwater2003

    • Author(s)
      Tase, N.
    • Journal Title

      Jour.of Japan Soc.on Water Environment 26(9)

      Pages: 2-6

    • NAID

      10011755584

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] 田瀬則雄: "硝酸・亜硝酸性窒素による水質汚染の現状と動向"水環境学会誌. 26・9. 546-550 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 井岡聖一郎, 田瀬則雄: "地下水帯における硝酸性窒素の自然減衰場"地下水・土壌汚染とその防止対策に関する研究集会第9回講演集. 294-297 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 杉田 文: "畑地地域を流れる小河川への硝酸態窒素の負荷源と流入経路について:カナダ・オンタリオ州ストロベリークリークの例"千葉商大紀要. 41・3. 125-142 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 井岡聖一郎, 田瀬則雄: "地下水中の硝酸イオンに対するシルト、粘土層の役害-水理的バリアか生物化学的バリアか-"地下水学会誌. 46・1. 37-50 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 田瀬則雄: "硝酸・亜硝酸性窒素による地下水汚染の現状と動向"環境管理. 40・3. 47-55 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 菅原洋平, 田瀬則雄: "台地末端部における硝酸イオン浄化ゾーンの3次元分布"地下水・土壌汚染とその防止対策に関する研究集会第10回講演集. (発表予定). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 田瀬則雄, 井岡聖一郎: "氷文地質と地下水・土壌汚染"地下水学会誌. 45・1. 49-58 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] 田瀬則雄, 井岡聖一郎: "地下水体における硝酸性窒素の消失と水文地質条件について"環境科学会2002年会プログラム. 90-91 (2002)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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