Experimental Investigation of Preferential Flow in a Near-Saturated Intact Soil Sample
Result description
Hydraulic conductivity in an intact sample of coarse sandy loam from the Cambisol series containing a naturally developed, vertically connected macropore was investigated during a recurrent ponding infiltration (RPI) experiment performed over a period of30 hours, in combination with neutron tomography imaging. The RPI experiment consisted of two consecutive ponded infiltration runs, each followed by free gravitational draining of the sample. Three-dimensional neutron tomography (NT) imaging of the drysample was acquired before the infiltration began. The dynamics of the advancement of the wetting front was investigated using a sequence of neutron radiography (NR) images. Analysis of these images showed that the water front moved preferentially through the macropore at an approximate speed of 2 mm/s, significantly faster than the 0.3 mm/s wetting advancement in the surrounding soil matrix. After outflow started temporal changes in the local water content distribution were evaluated qu
Keywords
The result's identifiers
Result code in IS VaVaI
Alternative codes found
RIV/68407700:21720/15:00230814
Result on the web
http://www.sciencedirect.com/science/article/pii/S187538921500680X
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Experimental Investigation of Preferential Flow in a Near-Saturated Intact Soil Sample
Original language description
Hydraulic conductivity in an intact sample of coarse sandy loam from the Cambisol series containing a naturally developed, vertically connected macropore was investigated during a recurrent ponding infiltration (RPI) experiment performed over a period of30 hours, in combination with neutron tomography imaging. The RPI experiment consisted of two consecutive ponded infiltration runs, each followed by free gravitational draining of the sample. Three-dimensional neutron tomography (NT) imaging of the drysample was acquired before the infiltration began. The dynamics of the advancement of the wetting front was investigated using a sequence of neutron radiography (NR) images. Analysis of these images showed that the water front moved preferentially through the macropore at an approximate speed of 2 mm/s, significantly faster than the 0.3 mm/s wetting advancement in the surrounding soil matrix. After outflow started temporal changes in the local water content distribution were evaluated qu
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JN - Civil engineering
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Physics Procedia
ISBN
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ISSN
1875-3892
e-ISSN
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Number of pages
7
Pages from-to
496-502
Publisher name
Elsevier
Place of publication
Amsterdam
Event location
Grindelwald
Event date
Oct 5, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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Basic information
Result type
D - Article in proceedings
CEP
JN - Civil engineering
Year of implementation
2015