TY - JOUR
T1 - Solute dispersion in unsaturated heterogeneous soil at field scale
T2 - I. Theory.
AU - Dagan, G.
AU - Bresler, E.
PY - 1979
Y1 - 1979
N2 - In a heterogeneous field whose hydraulic properties vary from point to point the transport of solute also differs from profile to profile. In this paper solute concentration on the field was treated as a random variable. The field heterogeneity was described in terms of the statistical distribution of the hydraulic parameters, which implies a corresponding distribution of the concentration. Equations for computing this distribution, as well as its average and variance, in a heterogeneous field were derived explicitly for a simple, but representative case, of leaching under random recharge distribution on the surface. The water and solute flow in unsaturated soil was assumed to be vertical and steady. The randomness of the hydraulic properties was reduced to that of the saturated hydraulic conductivity by adopting a scaling hypothesis and a log normal distribution. - Authors
AB - In a heterogeneous field whose hydraulic properties vary from point to point the transport of solute also differs from profile to profile. In this paper solute concentration on the field was treated as a random variable. The field heterogeneity was described in terms of the statistical distribution of the hydraulic parameters, which implies a corresponding distribution of the concentration. Equations for computing this distribution, as well as its average and variance, in a heterogeneous field were derived explicitly for a simple, but representative case, of leaching under random recharge distribution on the surface. The water and solute flow in unsaturated soil was assumed to be vertical and steady. The randomness of the hydraulic properties was reduced to that of the saturated hydraulic conductivity by adopting a scaling hypothesis and a log normal distribution. - Authors
UR - http://www.scopus.com/inward/record.url?scp=0018654679&partnerID=8YFLogxK
U2 - 10.2136/sssaj1979.03615995004300030008x
DO - 10.2136/sssaj1979.03615995004300030008x
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AN - SCOPUS:0018654679
SN - 0361-5995
VL - 43
SP - 461
EP - 467
JO - Soil Science Society of America Journal
JF - Soil Science Society of America Journal
IS - 3
ER -