REDISTRIBUTION OF WATER AND SOLUTE FOLLOWING INFILTRATION FROM A SURFACE DRIP SOURCE

被引:4
作者
CLOTHIER, B
SAUER, T
SCOTTER, D
机构
[1] UNIV WISCONSIN,DEPT SOIL SCI,MADISON,WI 53706
[2] MASSEY UNIV,DEPT SOIL SCI,PALMERSTON NORTH,NEW ZEALAND
关键词
D O I
10.1029/91WR00938
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Laboratory observations of the redistribution of water and solute, following one-dimensional and three-dimensional constant flux infiltration, reveal distinctly different paterns of water and chemical transport. The geometry-induced enhancement of capillarity over gravity in three dimensions is thought responsible for the rapid attainment during redistribution of a near-constant water content theta*, some radial distance r around the dripper. This renders simple the prediction of the maximum radial extent of convective solute redistribution, r*. Nevertheless, molecular diffusion about r* is the dominant mode of solute transport during the weak convective redistribution in three dimensions.
引用
收藏
页码:2091 / 2097
页数:7
相关论文
共 16 条
[1]   INFILTRATION AND WATER EXTRACTION FROM TRICKLE IRRIGATION SOURCE - THE EFFECTIVE HEMISPHERE MODEL [J].
BENASHER, J ;
CHARACH, C ;
ZEMEL, A .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1986, 50 (04) :882-887
[2]   NITROGEN TRANSPORT DURING DRIP FERTIGATION WITH UREA [J].
CLOTHIER, BE ;
SAUER, TJ .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1988, 52 (02) :345-349
[3]   SOLUTE-DISPERSION DURING AXISYMMETRIC 3-DIMENSIONAL UNSATURATED WATER-FLOW [J].
CLOTHIER, BE ;
ELRICK, DE .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1985, 49 (03) :552-556
[4]   THE MOVEMENT OF AMMONIUM-NITRATE INTO UNSATURATED SOIL DURING UNSTEADY ABSORPTION [J].
CLOTHIER, BE ;
SAUER, TJ ;
GREEN, SR .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1988, 52 (02) :340-345
[5]   GENERAL ANALYSIS OF LONGITUDINAL DISPERSION IN NONUNIFORM FLOW [J].
GELHAR, LW ;
COLLINS, MA .
WATER RESOURCES RESEARCH, 1971, 7 (06) :1511-&
[6]   ANALYSIS OF WATER-FLOW UNDER TRICKLE IRRIGATION .2. EXPERIMENTAL EVALUATION [J].
LAFOLIE, F ;
GUENNELON, R ;
VANGENUCHTEN, MT .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1989, 53 (05) :1318-1323
[7]   OPTIMAL PREDICTION OF SATURATION AND WETTING FRONTS DURING TRICKLE IRRIGATION [J].
LOCKINGTON, D ;
PARLANGE, JY ;
SURIN, A .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1984, 48 (03) :488-494
[8]   THEORY OF WATER MOVEMENT IN SOILS .10. CAVITIES WITH CONSTANT FLUX [J].
PARLANGE, JY .
SOIL SCIENCE, 1973, 116 (01) :1-7
[9]  
Philip J. R., 1969, ADV HYDROSCIENCE, V5, DOI [10.1016/B978-1-4831-9936-8.50010-6, DOI 10.1016/B978-1-4831-9936-8.50010-6]
[10]  
PHILIP JR, 1974, SOIL SCI, V117, P1, DOI 10.1097/00010694-197401000-00001