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Pressure formation mechanism for unstable infiltration with finger flow development in initially dry soil

Research Project

Project/Area Number 18580247
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Irrigation, drainage and rural engineering/Rural planning
Research InstitutionSaga University

Principal Investigator

CHO Hiroyuki  Saga University, 農学部, 准教授 (90136599)

Project Period (FY) 2006 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥3,890,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥390,000)
Fiscal Year 2008: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2007: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2006: ¥2,200,000 (Direct Cost: ¥2,200,000)
Keywords土壌圏現象 / 水循環 / 農業工学 / 森林工学 / 土壌学 / 浸潤 / 逆圧力勾配 / 浸潤前線 / 浸潤の不安定性 / マイクロテンシオメータ / 負圧 / 砂丘砂 / 散水実験 / 浸潤の不安定化
Research Abstract

強度に乾燥した砂質土壌に対し, 継続的な水分供給を行うと, 浸潤前線が不安定化しやすく, 不均一な流れが生じやすくなる。このような流れは, 灌漑計画を組み立てる上で障害になるばかりでなく, 肥料や汚染物質等の溶液成分を土壌に吸着させることなく速い速度で地下水面にまで輸送し, 地下水汚染を発生させる原因の一つとなっている。本研究では, このように流れが不安定になる原因を室内実験で明らかにし, 解析的に示すことができた。

Report

(4 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (25 results)

All 2009 2008 2007 2006

All Journal Article (21 results) (of which Peer Reviewed: 11 results) Presentation (4 results)

  • [Journal Article] 乾燥土壌への散水に伴う浸潤の不安定化に関する研究2009

    • Author(s)
      長裕幸, 井上光弘
    • Journal Title

      土壌の物理性 111号

      Pages: 53-60

    • NAID

      130008084868

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] 種々の電気伝導度条件に対する静電容量式土壌水分センサーの校正法2009

    • Author(s)
      宮本英輝, 長裕幸, 伊藤祐二, 筑紫二郎, 江口壽彦
    • Journal Title

      植物環境工学 (印刷中)

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Identification of the composite parameters of the BBH-B model specifying the effects of biohydrologic processes on the water balance of crop fields2009

    • Author(s)
      T. Kobayashi, J. Teshima, M. Mori, D. Yasutake, W. Wang, H. Cho
    • Journal Title

      Biologia 64/3

      Pages: 478-482

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Analysis of salts transport affected by root absorption capacity in surface-irrigated fields in the upper Yellow River basin2009

    • Author(s)
      D. Yasutake, T. Araki, W. Wang, T. Kobayashi, H. Cho, M. Mori, M. Kitano
    • Journal Title

      Biologia 64/3

      Pages: 570-574

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Water and salt movement in soil driven by crop roots: a controlled column study2009

    • Author(s)
      M. Kitano, K. Urayama, Y. Sakata, Y. Sonoda, K. Ebihara, Y. Sago, H. Yoshikoshi, T. Araki, D. Yasutake, H. Cho, T. Kobayashi
    • Journal Title

      Biologia 64/3

      Pages: 474-477

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] 乾燥土壌への散水に伴う浸潤の不安定化に関する研究2009

    • Author(s)
      長 裕幸
    • Journal Title

      土壌の物理性 111(印刷中)

    • NAID

      130008084868

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 種々の電気伝導度条件に対する静電容量式土壌水分センサーの校正法2009

    • Author(s)
      宮本英輝
    • Journal Title

      植物環境工学 21(2)(印刷中)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Wetting Solution and Electrical Double Layer Contributions to Bulk Electrical Conductivity of Sand-Clay Mixtures2008

    • Author(s)
      M.A. Mojid, H. Cho
    • Journal Title

      Vadose Zone Journal Vol.7, No.3

      Pages: 972-980

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Preliminary Column Experiment on Dynamics of Water and Ion Transport in Soil Affected by Root Absorption2008

    • Author(s)
      K. Urayama, K. Sakata, Y. Sonoda, K. Ebihara, T. Araki, Y. Sago, H. Yoshikoshi, D. Yasutake, H. Cho, T. Kobayashi, M. Kitano
    • Journal Title

      Journal of the Faculty of Agriculture(Kyushu University) 54

      Pages: 543-547

    • NAID

      120001036693

    • Related Report
      2008 Final Research Report
  • [Journal Article] Column Experiments on the Salt Accumulation in Adjoining Different-Textured Soil Profiles with a Shallow Water Table2008

    • Author(s)
      T. Kobayashi, D. Yokoyama, K. Ebihara, K. Sakata, Y. Sonoda, K. Urayama, H. Cho, H. Yoshikoshi, M. Kitano
    • Journal Title

      Journal of the Faculty of Agriculture(Kyushu University) 54

      Pages: 529-534

    • NAID

      120001036691

    • Related Report
      2008 Final Research Report
  • [Journal Article] Experiments on the Control of Salinity and Sodicity in Surface-Irrigated Fields in the Upper Yellow River Valley(IV)Tools for Analyzing Soil Salinity and Sodicity and Related Properties of the Field Soils2008

    • Author(s)
      T. Kobayashi, D. Yasutake, Y. Wu, K. Urayama, K. Tagawa, W. Wang, H. Cho
    • Journal Title

      Journal of the Faculty of Agriculture(Kyushu University) 53(2)

      Pages: 535-541

    • Related Report
      2008 Final Research Report
  • [Journal Article] Experiments on the Control of Salinity and Sodicity in Surface Irrigated Fields in the Upper Yellow River Valley(III)The State of Salinization and Alkalization in and around the Pingbu Experimental Field2008

    • Author(s)
      D. Yasutake, T. Araki, M. Kitano, W. Wang, K. Urayama, H. Cho, T. Kobayashi
    • Journal Title

      Journal of the Faculty of Agriculture(Kyushu University) 53(1)

      Pages: 265-270

    • Related Report
      2008 Final Research Report
  • [Journal Article] Experiments on the Control of Salinity and Sodicity in Surface-Irrigated Fields in the Upper Yellow River Valley(II)Observation System and Calibration2008

    • Author(s)
      H.Yoshikoshi, W. Wang, H. Cho, T. Araki, D. Yasutake, J. Zhou, K.Urayama, Y. Wu, T. Kobayashi, M. Kitano
    • Journal Title

      Journal of the Faculty of Agriculture(Kyushu University) 53(1)

      Pages: 257-263

    • Related Report
      2008 Final Research Report
  • [Journal Article] Experiments on the Control of Salinity and Sodicity in Surface-Irrigated Fields in the Upper Yellow River Valley(I)Objectives and Methodology2008

    • Author(s)
      W. Wang, T. Kobayashi, D. Yasutake, M. Kitano, H. Cho, T. Araki, H. Yoshikoshi
    • Journal Title

      Journal of the Faculty of Agriculture(Kyushu University) 53(1)

      Pages: 251-256

    • Related Report
      2008 Final Research Report
  • [Journal Article] Wetting Solution and Electrical Double Layer Contributions to Bulk Electrical Conductivity of Sand-Clay Mixtures.2008

    • Author(s)
      M. A. Mojid
    • Journal Title

      Vadose Zone Journal 7(3)

      Pages: 972-980

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Experimehts on the control of salinity and sodicity in surface-irrigated Fields in the upper Yellow River valley (I2008

    • Author(s)
      Weizhen Wang
    • Journal Title

      J.Fac.Agr.Kyushu Univ 53

      Pages: 251-256

    • Related Report
      2007 Annual Research Report
  • [Journal Article] Experiments on the control of salinity and sodicity in surface-irrigated Fields in the upper Yellow River valley (II2008

    • Author(s)
      Hisashi Yoshikoshi
    • Journal Title

      J.Fac.Agr.Kyushu Univ 53

      Pages: 257-263

    • Related Report
      2007 Annual Research Report
  • [Journal Article] An improvement on the BBH model made for estimating evapotranspiration from cornfields in the upper Yellow River2007

    • Author(s)
      T. Kobayashi, J. Teshima, R. Iwanaga, D. Ikegami, D. Yasutake, W. He, H. Cho
    • Journal Title

      Journal of Agricultural Meteorology 63(1)

      Pages: 1-10

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] An improvement in the BBH model for estimating evapotranspiration from cornfields in the upper Yellow River2007

    • Author(s)
      Tetsuo Kobayashi
    • Journal Title

      J.Agric.Meteorol 63

      Pages: 1-10

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Response of the ECH_2O Soil Moisture Probe in Electrically COnductive Soils2006

    • Author(s)
      M.A.Mojid
    • Journal Title

      Environmental Control of Biology 44(3)

      Pages: 225-230

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Estimatinf the fully developed diffuse double layer thickness from the bulk electrical conductivity in clay2006

    • Author(s)
      M.A.Mojid
    • Journal Title

      J.of Applied Clay Science 33

      Pages: 278-286

    • Related Report
      2006 Annual Research Report
  • [Presentation] 散水浸潤における浸潤前線の不安定化に関する研究2007

    • Author(s)
      長 裕幸
    • Organizer
      農業・農村工学会
    • Place of Presentation
      松江市
    • Year and Date
      2007-08-29
    • Related Report
      2007 Annual Research Report
  • [Presentation] 散水浸潤における浸潤前線の不安定化に関する研究2007

    • Author(s)
      長裕幸
    • Organizer
      農業土木学会
    • Place of Presentation
      松江
    • Related Report
      2008 Final Research Report
  • [Presentation] 乾燥地土壌における散水浸潤に伴う浸潤前線の不安定化に関する研究2007

    • Author(s)
      長裕幸, 井上光弘
    • Organizer
      乾燥地研究センター全国共同利用研究発表会
    • Place of Presentation
      鳥取
    • Related Report
      2008 Final Research Report
  • [Presentation] Measuring dynamic water entry suctions with microtensiometers during non-ponding infiltration in various soil materials, Soil Science Society of America2006

    • Author(s)
      H. Cho, G.H. de Rooij, M. Inoue
    • Organizer
      International Annual Meeting
    • Place of Presentation
      Indianapolis, USA
    • Related Report
      2008 Final Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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