Combined effect of heterogeneity, anisotropy and saturation on steady state flow and transport: Structure recognition and numerical simulation

Ursino, Nadia; Gimmi, Thomas (2004). Combined effect of heterogeneity, anisotropy and saturation on steady state flow and transport: Structure recognition and numerical simulation. Water resources research, 40(1), n/a-n/a. American Geophysical Union 10.1029/2003WR002180

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1 Natural soil profiles may be interpreted as an arrangement of parts which are characterized by properties like hydraulic conductivity and water retention function. These parts form a complicated structure. Characterizing the soil structure is fundamental in subsurface hydrology because it has a crucial influence on flow and transport and defines the patterns of many ecological processes. We applied an image analysis method for recognition and classification of visual soil attributes in order to model flow and transport through a man-made soil profile. Modeled and measured saturation-dependent effective parameters were compared. We found that characterizing and describing conductivity patterns in soils with sharp conductivity contrasts is feasible. Differently, solving flow and transport on the basis of these conductivity maps is difficult and, in general, requires special care for representation of small-scale processes.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geological Sciences

UniBE Contributor:

Gimmi, Thomas

Subjects:

500 Science > 550 Earth sciences & geology

ISSN:

0043-1397

Publisher:

American Geophysical Union

Language:

English

Submitter:

Thomas Gimmi

Date Deposited:

18 Sep 2014 17:21

Last Modified:

26 Jun 2016 01:50

Publisher DOI:

10.1029/2003WR002180

BORIS DOI:

10.7892/boris.47684

URI:

https://boris.unibe.ch/id/eprint/47684

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