Air entrapment and consolidation occurring with saturated hydraulic conductivity changes with intermittent wetting

被引：0
|
作者：
R. M. Seymour
机构：
[1] Bio-Resource Engineering,
[2] Department of Biosystems Science and Engineering,undefined
[3] University of Maine,undefined
[4] 5710 BRE,undefined
[5] Norm Smith Hall,undefined
[6] Orono,undefined
[7] ME 04469-5710,undefined
[8] USA e-mail: rseymour@umenfa.maine.edu Tel.: +1-207-5812727; Fax: +1-207-5812725,undefined
来源：
Irrigation Science | 2000年 / 20卷
关键词：
Surface Layer; Hydraulic Conductivity; Rate Change; Pressure Head; Infiltration Rate;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A study was designed to measure air entrapment and consolidation as mechanisms that might contribute to reduced hydraulic conductivity with intermittent wetting similar to surge irrigation cycles. The changes in hydraulic conductivity with intermittent wetting would result in infiltration rate changes. Air entrapment and consolidation in a surface layer sample of 50 mm was the focus of the study. During drainage periods between successive wettings, pressure head gradients within the surface layer samples were controlled to simulate drainage in a field situation. Air entrapment was found to occur consistently with reduction in saturated hydraulic conductivity while consolidation was not as consistent in its response with changes in saturated hydraulic conductivity.
引用
收藏
页码：9 / 14
页数：5
相关论文
共 34 条
  • [1] Air entrapment and consolidation occurring with saturated hydraulic conductivity changes with intermittent wetting
    Seymour, RM
    IRRIGATION SCIENCE, 2000, 20 (01) : 9 - 14
  • [2] The effect of entrapped air on the quasi-saturated soil hydraulic conductivity and comparison with the unsaturated hydraulic conductivity
    Sakaguchi, A
    Nishimura, T
    Kato, M
    VADOSE ZONE JOURNAL, 2005, 4 (01) : 139 - 144
  • [3] Saturated hydraulic conductivity of semiarid soils: Combined effects of salinity, sodicity, and rate of wetting
    Levy, GJ
    Goldstein, D
    Mamedov, AI
    SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 2005, 69 (03) : 653 - 662
  • [4] Temporal changes in soil hydraulic conductivity in saturated and unsaturated fields
    Junko Nishiwaki
    Robert Horton
    Paddy and Water Environment, 2020, 18 : 677 - 686
  • [5] Temporal changes in soil hydraulic conductivity in saturated and unsaturated fields
    Nishiwaki, Junko
    Horton, Robert
    PADDY AND WATER ENVIRONMENT, 2020, 18 (04) : 677 - 686
  • [6] Impacts of changes in vegetation on saturated hydraulic conductivity of soil in subtropical forests
    Mingzhuo Hao
    Jinchi Zhang
    Miaojing Meng
    Han Y. H. Chen
    Xiaoping Guo
    Shenglong Liu
    Lixin Ye
    Scientific Reports, 9
  • [7] Impacts of changes in vegetation on saturated hydraulic conductivity of soil in subtropical forests
    Hao, Mingzhuo
    Zhang, Jinchi
    Meng, Miaojing
    Chen, Han Y. H.
    Guo, Xiaoping
    Liu, Shenglong
    Ye, Lixin
    SCIENTIFIC REPORTS, 2019, 9 (1)
  • [8] Effect of entrapped air on hydraulic conductivity in quasi-saturated porous media
    Cheng D.
    Li S.
    Yu D.
    Wang Q.
    Yang Y.
    Shuikexue Jinzhan/Advances in Water Science, 2019, 30 (05): : 691 - 698
  • [9] Correlation between Air Permeability and Saturated Hydraulic Conductivity: Unburned and Burned Soils
    Chief, Karletta
    Ferre, Ty P. A.
    Nijssen, Bart
    SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 2008, 72 (06) : 1501 - 1509
  • [10] Seasonal changes in surface bulk density and saturated hydraulic conductivity of natural landscapes
    Hu, W.
    Shao, M. A.
    Si, B. C.
    EUROPEAN JOURNAL OF SOIL SCIENCE, 2012, 63 (06) : 820 - 830
1234