Comparison of two methods to assess heterogeneity of water flow in soils

Title:

Comparison of two methods to assess heterogeneity of water flow in soils

Creator:

Lichner, Ľubomír, Dušek, Jaromír, Dekker, Louis W., Zhukova, Natalia, Faško, Pavol, Holko, Ladislav, and Šír, Miloslav

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:2354a2b0-58e2-43e7-8400-89224781d891
uuid:2354a2b0-58e2-43e7-8400-89224781d891
doi:10.2478/johh-2013-0038

Subject:

degree of preferential flow, effective cross section, preferential flow in soil, infiltration experiment, and radioactive tracer technique

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

The heterogeneity of water flow and solute transport was assessed during radioactive tracer infiltration experiment in a black clay loam soil using modified methods to estimate the effective cross section (ECS) and the degree of preferential flow (DPF). The results of field and numerical experiments showed that these parameters characterized the heterogeneity of water flow in the soils unequivocally. The ECS decreases non-linearly and the DPF increases linearly with an increase of the bypassing ratio (ratio of macropore flow rate to total flow rate). The ECS decreased and the DPF increased with depth, which suggests an increase in the heterogeneity of water flow with depth. The plot of the DPF against ECS values calculated from the tracer experiment data was consistent with the relationship obtained by the numerical simulation assuming preferential flow in the neighbourhood of three probes.

Language:

Slovak

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

299-304

Source:

Journal of hydrology and hydromechanics | 2013 Volume:61 | Number:4

Harvested from:

CDK

Metadata only:

false