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Modeling Gas Transport in Soils and its Application to the Environmental Risk Assessment

Research Project

Project/Area Number 18360224
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Geotechnical engineering
Research InstitutionSaitama University

Principal Investigator

KOMATSU Toshiko  Saitama University, 大学院・理工学研究科, 教授 (80034396)

Co-Investigator(Kenkyū-buntansha) KAWAMOTO Ken  埼玉大学, 大学院・理工学研究科, 准教授 (50292644)
HASEGAWA Syuichi  北海道大学, 大学院・農学研究科, 教授 (10333634)
MIZOGUCHI Masaru  東京大学, 大学院・農学生命科学研究科, 教授 (00181917)
Research Collaborator MOLDRUP PER  Aalborg University, Department of Chemistry, Biotechnology, and Environmental Engineering, Professor
ROLSTON Dennis E.  Dept. of Land, Air, and Water Resources, Univ. of California, Davis, Professor
Project Period (FY) 2006 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥15,150,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2007: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2006: ¥10,600,000 (Direct Cost: ¥10,600,000)
Keywordsガス拡散係数 / 通気係数 / パラメータ予測モデル / 不撹乱土壌 / 拡散係数空間分布 / 無効間隙率 / 火山灰土壌 / 土壌水分特性 / パラメタ予測モデル
Research Abstract

本研究では, 環境リスク評価に適用できる統合モデルの構築を目指して, 土壌内におけるガスの挙動を測定し, ガス挙動に与える土壌特性の影響を調べるとともに, トランスポート・パラメータ(拡散係数, 分散係数, 通気係数, 溶質拡散係数)のモデル化を行った. 土壌ガスのトランスポート・パラメータについては, 火山灰土壌, 砂質土を用いて実測を行い, 間隙構造や粒径分布, 有機物含有量などの土壌特性を考慮した多くの新しい予測モデルを提案した. 従来のモデルの検証も行った. また, 同一カラムで3つの土壌ガスのトランスポート・パラメータ(拡散係数, 分散係数, 通気係数)を測定できる新しい方法を開発した. 構造異方性のある泥炭土の乾燥過程におけるガス拡散係数, 通気係数を測定し, 泥炭土のガス輸送機構は泥炭の内間隙と外間隙の水分状態に応じて大きく3つに区分されることが示唆された. 溶質拡散についてはこれまでに報告例の少ない火山灰土壌の拡散係数を測定し, 火山灰土壌は団粒内間隙と団粒間間隙という複雑な土壌構造を持つため, 拡散係数が他の土壌に比べて特異な挙動を示すことがわかった. 土壌特性(粘土, 有機物含有量)と土壌構造(間隙径分布)を考慮した新しい溶質拡散係数の予測モデルも提案した. このように多くの実測とともに, 最終目標とする統合モデルの構築の基盤となる多くの簡便で正確な予測モデルを提案した.

Report

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

    (78 results)

All 2009 2008 2007 2006

All Journal Article (33 results) (of which Peer Reviewed: 26 results) Presentation (45 results)

  • [Journal Article] Unified Measurement System for the Gas Dispersion Coefficient, Permeability and DiffusionCoefficient, and their Interrelations in Variably-Saturated Soil2009

    • Author(s)
      Hamamoto S., P. Moldrup, K. Kawamoto, T. Komatsu, and D. E. Rolston
    • Journal Title

      Submitted to Soil Science Society of American Journal (掲載決定)

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] 境界条件が原位置通気係数の算出に用いられる形状係数に及ぼす影響2009

    • Author(s)
      濱本昌一郎, 川本健, 長森正尚, 小松登志子, Per Moldrup
    • Journal Title

      土木学会論文集 (掲載決定)

    • NAID

      130004943055

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] The Solute Diffusion Coefficient in Variably-Compacted, Unsaturated Volcanic Ash Soils2009

    • Author(s)
      Hamamoto S., M. S. A. Perera, A. Resurreccion, K. Kawamoto, S. Hasegawa, T. Komatsu, and P. Moldrup
    • Journal Title

      Submitted to Vadose Zone Journal (掲載決定)

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Effect of Particle Size and Soil Compaction on Gas Transport Parameters in Variably-Saturated, Sandy Soils2009

    • Author(s)
      Hamamoto S., P. Moldrup, K. Kawamoto, and T. Komatsu
    • Journal Title

      Vadose Zone Journal (掲載決定)

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Effect of Particle Size and Soil Compaction on Gas Transport Parameters in Variably-Saturated, Sandy Soils2009

    • Author(s)
      Hamamoto S.
    • Journal Title

      Vadose Zone Journal (掲載決定)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The. Solute Diffusion Coefficient in Variably-Compacted, Unsa turated Volcanic Ash Soils.2009

    • Author(s)
      Hamamoto S.
    • Journal Title

      Vadose Zone Journal (accepted)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 境界条件が原位置通気係数の算出に用いられる形状係数に及ぼす影響2009

    • Author(s)
      濱本昌一郎
    • Journal Title

      土木学会論文集 (accepted)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Unified Measurement System for the Gas Dispersion Coefficient, Permeability and Diffusion Coefficient, and their Interrelationsin Variably-Saturated Soil.2009

    • Author(s)
      Hamamoto S.
    • Journal Title

      Soil Science Society of American J. (accepted)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 泥炭土のガス拡散・透気特性に脱水収縮が及ぼす影響2008

    • Author(s)
      飯塚健仁, 川本健, 小松登志子, 長谷川周一
    • Journal Title

      土木学会論文集G Vol.64, No.3

      Pages: 242-249

    • NAID

      130004468784

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] A Gas Diffusivity Model Based on Air-, Solid-, and Water-Phase Resistance in Variably Saturated Soil2008

    • Author(s)
      Thorbjorn, A., P. Moldrup, H. Blendstrup, T. Komatsu, and D.E. Rolston
    • Journal Title

      Vadose Zone Journal Vol.7, No.4

      Pages: 1230-1240

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Linear Model to Predict Soil-Gas Diffusivity from Two Soil-Water Retention Points in Unsaturated Volcanic Ash Soils2008

    • Author(s)
      Resurreccion, A. C., K. Kawamoto, T. Komatsu, K. Sato, and P. Moldrup
    • Journal Title

      Soils and Foundation Vol.48, No.3

      Pages: 397-406

    • NAID

      110007327346

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Variable Pore Connectivity Factor Model for Gas Diffusivity in Unsaturated, Aggregated Soil2008

    • Author(s)
      Resurreccion, A. C., P. Moldrup, K. Kawamoto, S. Yoshikawa, D.E. Rolston, and T. Komatsu
    • Journal Title

      Vadose Zone Journal Vol.7, No.2

      Pages: 397-405

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Variable Pore Connectivity Factor Model for Gas Diffusivity in Unsaturated, Aggregated Soil2008

    • Author(s)
      Resurreccion, A.C.
    • Journal Title

      Vadose Zone Journal Vol.7, No.2

      Pages: 397-405

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Linear Model to Predict Soil-Gas Diffusivity from Two Soil-Water Ret2008

    • Author(s)
      Resurreccion, A.C.
    • Journal Title

      Soils and Foundation Vol.48, No.3

      Pages: 397-406

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Gas Diffusivity Model Based on Air-, Solid-, and Water-Phase Resistance in Variably Saturated Soil2008

    • Author(s)
      Thorbjorn, A.
    • Journal Title

      Vadose Zone Journal Vol. 7, No. 4

      Pages: 1230-1240

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 泥炭土のガス拡散・透気特性に脱水収縮が及ぼす影響2008

    • Author(s)
      飯塚健仁
    • Journal Title

      土木学会論文集G Vo1. 64, No, 3

      Pages: 242-249

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Gas transport parameters along field transects of a volcanic ash soil2007

    • Author(s)
      Resurreccion, A. C., K. Kawamoto, T. Komatsu, P. Moldrup, N. Ozaki, and D.E. Rolston
    • Journal Title

      Soil Sci Vol.172, No.1

      Pages: 3-16

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Gas diffusivity and air permeability in a volcanic ash soil profile : Effects of organic matter and water retention2007

    • Author(s)
      Resurreccion, A. C., K. Kawamoto, T. Komatsu, P. Moldrup, N. Ozaki, and D.E. Rolston
    • Journal Title

      Soil Sci Vol.172, No.6

      Pages: 432-443

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Water repellency of aggregate size fractions of a volcanic ash soil2007

    • Author(s)
      Kawamoto, K., P. Moldrup, T. Komatsu, L.W. de Jonge, and M. Oda
    • Journal Title

      Soil Sci. Soc. Am. J 71

      Pages: 1658-1666

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Predictive-descriptive models for gas and solute diffusion coefficients in variably saturated porous media coupled to pore-size distribution: IV. Solute diffusivity and the liquid phase impedance factor2007

    • Author(s)
      Moldrup, P., T. Olesen, H. Blendstrup, T. Komatsu, L.W. de Jonge, and D.E. Rolston
    • Journal Title

      Soil Science Vol.172, No.10

      Pages: 741-750

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] A linear model to predict the soil-gas diffusion coefficient of undisturbed unsaturated volcanic ash soil2007

    • Author(s)
      Komatsu, T., K. Kawamoto, A. Resurreccion, and P. Moldrup
    • Journal Title

      埼玉大学紀要工学部 第40号

      Pages: 63-66

    • Related Report
      2008 Final Research Report
  • [Journal Article] Gas diffusivity and air permeability in a volcanic ash soil profue:Effecs of organic matter and water retention2007

    • Author(s)
      Resurreccion, A.C
    • Journal Title

      Soil Science Vol.172,No.6

      Pages: 432-443

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Water repellency of aggregate size fractions of a volcanic ash soil2007

    • Author(s)
      Kawamoto, K.
    • Journal Title

      Soil Sci. Soc. Am. J No.71

      Pages: 1658-1666

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Predictive-descriptive models for gas and solute diffusion coeffcients in variably saturated porous media coupled to pore-size distribution:IV Solute diffusivity and the liquid phase impedance factor2007

    • Author(s)
      Moldrup, P.
    • Journal Title

      Soi Science Vol.172,No.10

      Pages: 741-750

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A linear model to predict the soil-gas diffusion coefficient of undisturbed unsaturated volcanic ash soil2007

    • Author(s)
      Komatsu, T.
    • Journal Title

      埼玉大学紀要工学部 40

      Pages: 63-66

    • Related Report
      2007 Annual Research Report
  • [Journal Article] Gas Transport Parameters Along Field Transects of a Volcanic Ash Soil2007

    • Author(s)
      Resurreccion, A.C.
    • Journal Title

      Soil Science Vol.172,No.1

      Pages: 3-16

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Gas Diffusivity and Air Permeability in a Volcanic Ash Soil Profile : Effects of Organic Matter and Water Retention2007

    • Author(s)
      Resurreccion, A.C.
    • Journal Title

      Soil Science (In press)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Bi-modal probability law model for unified description of water retention, air and water permeability, and gas diffusivity in variably saturated soil2006

    • Author(s)
      Poulsen, T. G., P. Moldrup, S. Yoshikawa, and T. Komatsu
    • Journal Title

      Vadose Zone Journal No.5

      Pages: 1119-1128

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Gas transport parameters in the vadose zone : Gas diffusivity in field and lysimeter soil profiles2006

    • Author(s)
      Kawamoto, K., P. Moldrup, P. Schjonning, B.V. Iversen, D.E. Rolston, and T. Komatsu
    • Journal Title

      Vadose Zone J. Vol.5

      Pages: 1194-1204

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Gas transport parameters in the vadose zone : Development and tests of power-law models for air permeability2006

    • Author(s)
      Kawamoto, K., P. Moldrup, P. Schjonning, B.V. Iversen, T. Komatsu, and D.E. Rolston
    • Journal Title

      Vadose Zone J. Vol.5

      Pages: 1205-1215

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Bi-modal probability law model for unified description of water retention, air and water permeability, and gas diffusivity in variably saturated soil2006

    • Author(s)
      Poulsen, T.G.
    • Journal Title

      Vadose Zone Journal No.5

      Pages: 1119-1128

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Gas Transport Parameters in the Vadose Zone : Gas Diffusivity in Field and Lysimeter Soil Profiles2006

    • Author(s)
      Kawamoto, K.
    • Journal Title

      Vadose Zone Journal No.5

      Pages: 1194-1204

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Gas Transport Parameters in the Vadose Zone : Development and Tests of Power-Law Models for Air Permeability2006

    • Author(s)
      Kawamoto, K.
    • Journal Title

      Vadose Zone Journal No.5

      Pages: 1205-1215

    • Related Report
      2006 Annual Research Report
  • [Presentation] Gas diffusion coefficient in variably saturated peat soil : Development and tests of predictive models2008

    • Author(s)
      Unno, M., K. Kawamoto, P. Moldrup, and T. Komatsu
    • Organizer
      American Geophysical Union Fall Meeting 2008
    • Place of Presentation
      サンフランシスコ(USA)
    • Year and Date
      2008-12-15
    • Related Report
      2008 Final Research Report
  • [Presentation] Three-dimensional pore structure analysis for peat materials using microfocus X-ray computed tomography2008

    • Author(s)
      Iiduka, K., K. Kawamoto, T. Takemura, M. Oda, P. Moldrup, and T. Komatsu
    • Organizer
      American Geophysical Union Fall Meeting 2008
    • Place of Presentation
      サンフランシスコ(USA)
    • Year and Date
      2008-12-15
    • Related Report
      2008 Final Research Report
  • [Presentation] Gas diffusion coefficient in variably saturated peat soil: Development and tests of predictive models2008

    • Author(s)
      Unno, M.
    • Organizer
      American Geophysical Union Fall Meeting 2008
    • Place of Presentation
      サンフランシスコ(USA)
    • Year and Date
      2008-12-15
    • Related Report
      2008 Annual Research Report
  • [Presentation] Three-dimensional pore structure analysis for peat materials using microfocus X-ray computed tomography2008

    • Author(s)
      Iiduka, K.
    • Organizer
      American Geophysical Union Fall Meeting 2008
    • Place of Presentation
      サンフランシスコ(USA)
    • Year and Date
      2008-12-15
    • Related Report
      2008 Annual Research Report
  • [Presentation] 砂と団粒土のガス分散長に関する研究2008

    • Author(s)
      濱本昌一郎, 川本健, 小松登志子
    • Organizer
      第50回土壌物理学会シンポジウム講演
    • Place of Presentation
      三重大学(三重県)
    • Year and Date
      2008-10-18
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] Single-and two-individual-region models for gas diffusivity in structureless or aggregated, unsaturated soil2008

    • Author(s)
      Resurreccion, A. C., K. Kawamoto, S. Hamamoto, T. Komatsu, and P. Moldrup
    • Organizer
      International Annual Meeting of SSSA
    • Place of Presentation
      ヒューストン(USA)
    • Year and Date
      2008-10-07
    • Related Report
      2008 Final Research Report
  • [Presentation] Simultaneous measurements of the soil-gas dispersion coefficient, gas permeability, and gas diffusivity in repacked, structureless and aggregated soils2008

    • Author(s)
      Hamamoto, S., K. Kawamoto, T. Komatsu, and P. Moldrup
    • Organizer
      International Annual Meeting of SSSA
    • Place of Presentation
      ヒューストン(USA)
    • Year and Date
      2008-10-07
    • Related Report
      2008 Final Research Report
  • [Presentation] Single- and two-individual-region models for gas diffusivity in structureless or aggregated, unsaturated soil2008

    • Author(s)
      Resurreccion, A. C.
    • Organizer
      International Annual Meeting of SSSA
    • Place of Presentation
      ヒユーストン(USA)
    • Year and Date
      2008-10-07
    • Related Report
      2008 Annual Research Report
  • [Presentation] Simultaneous measurements of the soil-gas dispersion coefficient, gas permeability, permeability, structureless and aggregated soils2008

    • Author(s)
      Hamamoto, S.
    • Organizer
      International Annual Meeting of SSSA
    • Place of Presentation
      ヒユーストン(USA)
    • Year and Date
      2008-10-07
    • Related Report
      2008 Annual Research Report
  • [Presentation] 泥炭土の脱水過程におけるガス移動パラメータの特性2008

    • Author(s)
      海野将孝, 川本健, 小松登志子, 常田岳志, 飯山一平
    • Organizer
      土木学会第63回年次学術講演会
    • Place of Presentation
      東北大学(宮城県)
    • Year and Date
      2008-09-10
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] 不飽和領域における泥炭土の透水・透気性評価2008

    • Author(s)
      飯塚健仁, 川本健, 小松登志子, 小林邦宏
    • Organizer
      土木学会第63回年次学術講演会
    • Place of Presentation
      東北大学(宮城県)
    • Year and Date
      2008-09-10
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] 一次元カラム実験装置を用いた土壌ガス分散係数の測定2008

    • Author(s)
      濱本昌一郎, 川本健, 小松登志子
    • Organizer
      第14回地下水・土壌汚染とその防止対策に関する研究集会
    • Place of Presentation
      さいたま市(埼玉県)
    • Year and Date
      2008-06-26
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] 土壌物理特性に基づく新たな透気係数予測式の提案2008

    • Author(s)
      飯塚健仁, 川本健, 小松登志子, 岩田幸良
    • Organizer
      第14回地下水・土壌汚染とその防止対策に関する研究集会
    • Place of Presentation
      さいたま市(埼玉県)
    • Year and Date
      2008-06-26
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] The effect of soil compaction on solute diffusion in volcanic ash soil2008

    • Author(s)
      Hamamoto, S., M.A.P. Samintha, A.C. Resurreccion, K. Kawamoto, T. Komatsu, and P. Moldrup
    • Organizer
      Interfaces Against Pollution 2008
    • Place of Presentation
      京都大学(京都府)
    • Year and Date
      2008-06-02
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] Comparison of solute diffusivity between volcanic ash soils and normal mineral soils2008

    • Author(s)
      Samintha, M.A.P., S. Hamamoto, A.C. Resurreccion, K. Kawamoto, P. Moldrup, T. Komatsu, and S. Hasegawa
    • Organizer
      日本地球惑星科学連合大会2008
    • Place of Presentation
      幕張メッセ(千葉県)
    • Year and Date
      2008-05-28
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] Measurements of gas phase convection and dispersion parameters in soil2008

    • Author(s)
      Hamamoto, S., K. Kawamoto, and T. Komatsu
    • Organizer
      日本地球惑星科学連合大会2008
    • Place of Presentation
      幕張メッセ(千葉県)
    • Year and Date
      2008-05-28
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] Spatial variability and scale dependency of soil-air permeability at waste disposal landfill site and natural field2008

    • Author(s)
      Sugimoto, Y., S. Hamamoto, K. Kawamoto, T. Komatsu, and M. Nagamori
    • Organizer
      iSEM 2008
    • Place of Presentation
      タワーホール船堀(東京都)
    • Year and Date
      2008-04-24
    • Related Report
      2008 Final Research Report
  • [Presentation] Spatial variability and scale dependency of soil-air disposal landfill site and natural field. Permeability at waste2008

    • Author(s)
      Sugimoto, Y.
    • Organizer
      International Symposium on Environmental Management: Hazardous-Environmental Management Toward Sustainability (iSEM 2008)
    • Place of Presentation
      タワーホール船堀(東京都)
    • Year and Date
      2008-04-24
    • Related Report
      2008 Annual Research Report
  • [Presentation] Soil-gas diffusion coefficient and air conductivity for peat soil: Effect of volume shrinkage with successive drainage2008

    • Author(s)
      Iizuka, K, K. Kawamoto, P. Moldrup, and T. Komatsu
    • Organizer
      International Collaborative Graduate Symposium bet-ween Saitama University
    • Place of Presentation
      スリランカ
    • Year and Date
      2008-01-29
    • Related Report
      2008 Final Research Report
  • [Presentation] Soil-gas diffusion coeffcient and air conductivity for peat so: Effect of volume shrinkage with successive drainage2008

    • Author(s)
      Iizuka, K
    • Organizer
      International Collaborative Graduate Symposiumbet-ween Saitama University.
    • Place of Presentation
      スリランカ
    • Year and Date
      2008-01-29
    • Related Report
      2007 Annual Research Report
  • [Presentation] Gas transport parameters for peaty soil: Effect of peat shrinkage induced by successive drainage2007

    • Author(s)
      Iizuka, K., A.C. Resurreccion, K. Kawamoto, P. Moldrup, S. Hasegawa, and T. Komatsu
    • Organizer
      American Geophysical Union Fall Meeting
    • Place of Presentation
      サンフランシスコ(USA)
    • Year and Date
      2007-12-14
    • Related Report
      2008 Final Research Report
  • [Presentation] Gas diffusivity and air permeability in sandy soils: Effect of particle size, compaction and sample scale2007

    • Author(s)
      Hamamoto, S., K. Kawamoto, P. Moldrup, and T. Komatsu
    • Organizer
      American Geophysical Union Fall Meeting
    • Place of Presentation
      サンフランシスコ(USA)
    • Year and Date
      2007-12-14
    • Related Report
      2008 Final Research Report
  • [Presentation] Solute diffusivity of repacked volcanic ash soil : Effect of changes in pore size distribution due to soil compaction2007

    • Author(s)
      Samintha, M.A.P., A.C. Resurreccion, K. Kawamoto, T. Komatsu, and P. Moldrup
    • Organizer
      American Geophysical Union Fall Meeting
    • Place of Presentation
      サンフランシスコ(USA)
    • Year and Date
      2007-12-14
    • Related Report
      2008 Final Research Report
  • [Presentation] Gas diffusivity and air permeability in sandy soils Effect of partic le size,compaction and sample scale2007

    • Author(s)
      Hamamoto, S.
    • Organizer
      American Geophysical Union Fall Meeting.
    • Place of Presentation
      サンフランシスコ(USA)
    • Year and Date
      2007-12-14
    • Related Report
      2007 Annual Research Report
  • [Presentation] Solute diffusivity of repacked volcanic ash soil:Effect of changes in pore size distribution due to soil compaction2007

    • Author(s)
      Samintha, M.A.P.学生優秀発表賞受賞)
    • Organizer
      American Geophysical Union Fall Meeting
    • Place of Presentation
      サンフランシスコ(USA)
    • Year and Date
      2007-12-14
    • Related Report
      2007 Annual Research Report
  • [Presentation] Gas transport parameters for peaty soil;Effect of peat shrinkage induced by successive drainage2007

    • Author(s)
      Iizuka, K
    • Organizer
      American Geophysical Union Fall Meeting
    • Place of Presentation
      サンラランシスコ(USA)
    • Year and Date
      2007-12-14
    • Related Report
      2007 Annual Research Report
  • [Presentation] Gas transport parameters in a peat soil profile2007

    • Author(s)
      Kawamoto, K., K. Iiduka, K. Kobayashi, P. Moldrup, T. Komatsu, and S. Hasegawa
    • Organizer
      ASA-CSSA-SSSA International Annual Meetings
    • Place of Presentation
      ニューオーリンズ(USA)
    • Year and Date
      2007-11-07
    • Related Report
      2008 Final Research Report 2007 Annual Research Report
  • [Presentation] 泥炭土の脱水収縮がガス輸送パラメータに及ぼす影響について2007

    • Author(s)
      飯塚健仁, 川本健, 小松登志子, A.C. Resurreccion, 小林邦宏, 長谷川周一
    • Organizer
      第49回土壌物理学会
    • Place of Presentation
      福岡
    • Year and Date
      2007-10-13
    • Related Report
      2008 Final Research Report 2007 Annual Research Report
  • [Presentation] 土壌の構造および粒径がガス拡散係数に及ぼす影響2007

    • Author(s)
      杉本雄一, 濱本昌一郎, 長谷川久展, 川本健, 小松登志子
    • Organizer
      第49回土壌物理学会
    • Place of Presentation
      福岡
    • Year and Date
      2007-10-13
    • Related Report
      2008 Final Research Report
  • [Presentation] Comparison of soil compaction effect on solute diffusivity between normal mineral soils and volcanic ash soils2007

    • Author(s)
      Samintha, M.A.P., A.C. Resurreccion, K. Kawamoto, T. Komatsu, P. Moldrup
    • Organizer
      第49回土壌物理学会
    • Place of Presentation
      福岡
    • Year and Date
      2007-10-13
    • Related Report
      2008 Final Research Report
  • [Presentation] 人工マクロポアを含む砂のガス輸送パラメータへの毛管束モデルの適用2007

    • Author(s)
      濱本昌一郎, 川本健, 小松登志子
    • Organizer
      第49回土壌物理学会
    • Place of Presentation
      福岡
    • Year and Date
      2007-10-13
    • Related Report
      2008 Final Research Report
  • [Presentation] 土壌の構造および粒径がガ子拡散係数に及ぼす影響2007

    • Author(s)
      杉本 雄一
    • Organizer
      第49回土壌物理学会
    • Place of Presentation
      福岡
    • Year and Date
      2007-10-13
    • Related Report
      2007 Annual Research Report
  • [Presentation] Comparison of soi compaction effect on solute diffusivity between normal mineral soils and volcanic ash soils2007

    • Author(s)
      Samintha, M. A. P
    • Organizer
      第49回土壌物理学会
    • Place of Presentation
      福岡
    • Year and Date
      2007-10-13
    • Related Report
      2007 Annual Research Report
  • [Presentation] 人工マクロボアを含む砂のガス輸送パラメータへの毛管束モデルの適用2007

    • Author(s)
      浜本 昌一郎
    • Organizer
      第49回土壌物理学会
    • Place of Presentation
      福岡
    • Year and Date
      2007-10-13
    • Related Report
      2007 Annual Research Report
  • [Presentation] Effect of soil compaction on solute diffusion coefficient in repacked volcanic ash soil2007

    • Author(s)
      Samintha, M.A.P., A.C. Resurreccion, K. Kawamoto, and T. Komatsu
    • Organizer
      第9 回土木学会インターナショナルサマーシンポジウム
    • Place of Presentation
      横浜
    • Year and Date
      2007-09-18
    • Related Report
      2008 Final Research Report
  • [Presentation] Scale dependency of gas diffusivity and air permeability in sand2007

    • Author(s)
      Hamamoto, S., T. Komatsu, K. Kawamoto, and A.C. Resurreccion
    • Organizer
      第9回土木学会インターナショナルサマーシンポジウム
    • Place of Presentation
      横浜
    • Year and Date
      2007-09-18
    • Related Report
      2008 Final Research Report 2007 Annual Research Report
  • [Presentation] Characteristics of gas transport parameters in a peat soil2007

    • Author(s)
      Iiduka, K., K. Kawamoto, K. Kobayashi, T. Komatsu
    • Organizer
      第9回土木学会インターナショナルサマーシンポジウム
    • Place of Presentation
      横浜
    • Year and Date
      2007-09-18
    • Related Report
      2008 Final Research Report 2007 Annual Research Report
  • [Presentation] Effect of soil compaction on solute diffusion coefficient in repacked volcanic ash soil2007

    • Author(s)
      Samintha, M. A. P
    • Organizer
      第9回土木学会インターナショナルサマーシンポジウム
    • Place of Presentation
      横浜
    • Year and Date
      2007-09-18
    • Related Report
      2007 Annual Research Report
  • [Presentation] 泥炭土におけるガス拡散係数・通気係数測定2007

    • Author(s)
      飯塚健仁, 小林邦宏, 川本健, 小松登志子, 長谷川周一, 小田匡寛
    • Organizer
      第13回地下水・土壌汚染とその防止対策に関する研究集会
    • Place of Presentation
      京都
    • Year and Date
      2007-06-06
    • Related Report
      2008 Final Research Report 2007 Annual Research Report
  • [Presentation] Adsorption of 2, 4-D and atrazine onto kaolinite: Effects of pH and back-ground electrolytes2007

    • Author(s)
      Sharma, A., K. Kawamoto, S. Hiradate, H. Kurokawa, P. Moldrup, and T. Komatsu
    • Organizer
      日本地球惑星科学連合
    • Place of Presentation
      幕張メッセ(千葉県)
    • Year and Date
      2007-05-24
    • Related Report
      2008 Final Research Report
  • [Presentation] Two-retention-point(2RP)linear model for predicting the soil-gas diffusivity in unsaturated undisturbed volcanic ash soil2007

    • Author(s)
      Resurreccion, A.C., K. Kawamoto, P. Moldrup, T. Komatsu, and D.E. Rolston
    • Organizer
      日本地球惑星科学連合
    • Place of Presentation
      幕張メッセ(千葉県)
    • Year and Date
      2007-05-24
    • Related Report
      2008 Final Research Report
  • [Presentation] Adsorption of 2,4-D and atrazine onto kaolinite:Effects of pH and back-ground electrolytes2007

    • Author(s)
      Sharma, A.
    • Organizer
      日本地球惑星科学連合
    • Place of Presentation
      幕張ヌッセ(千葉県)
    • Year and Date
      2007-05-24
    • Related Report
      2007 Annual Research Report
  • [Presentation] Two-retention-point(2RP)linear model for predicting the soi-gas diffusivity in unsaturated undisturbed volcanic ash soil2007

    • Author(s)
      Resurreccion, A. C
    • Organizer
      日本地球惑星科学連合
    • Place of Presentation
      幕張メッセ(千葉県)
    • Year and Date
      2007-05-19
    • Related Report
      2007 Annual Research Report
  • [Presentation] Adsorption mechanisms of an ionic pesticide onto kaolinite, Proceedings of the International Conference on Emerging Issues on Research and Development2007

    • Author(s)
      Sharma, A., K. Kawamoto, T. Komatsu, and P. Moldrup
    • Organizer
      International Conference on Emerging Issues on Research and Development
    • Place of Presentation
      カトマンズ(ネパール)
    • Year and Date
      2007-04-04
    • Related Report
      2008 Final Research Report
  • [Presentation] Adsorption mechanisims of an ionic pesticide onto kaolinite,Proceedings of the International Conference on Emerging Issues on Research and Development2007

    • Author(s)
      Sharma, A.
    • Organizer
      International Conference on Emerging lssues on Research and Development
    • Place of Presentation
      カトヤンズ(ネパール)
    • Year and Date
      2007-04-04
    • Related Report
      2007 Annual Research Report

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

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