Searching Below Thresholds: Tracing the Origins of Preferential Flow Within Undisturbed Soil Samples

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F02%3A01083073" target="_blank" >RIV/68407700:21110/02:01083073 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Searching Below Thresholds: Tracing the Origins of Preferential Flow Within Undisturbed Soil Samples
Original language description
Infiltration outflow experiments, performed on undisturbed samples of coarse sandy loam (KH) revealed the presence of preferential flow and "steady state" infiltration rate instability, compared to results of the same experiment performed on an undisturbed sample of fine sand (HB). The structure of samples was visualized by computer tomography, and in addition the infiltration outflow experiment for KH soil was performed in a magnetic resonance (MR) scanner. From MR images it was found that for the KH soil sample the character of flow changes gradually during the ponded infiltration. The volume flowing through the sample by gravity at the beginning of the experiment forming early outflow later decreases as the portion of the matrix flow increases. In the recurrent infiltration run into the "saturated" sample this decrease may be abrupt, accompanied by a significant decrease in the "steady state" infiltration rate. Both effects are unexpected from the point of view of Richards' theory.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2002
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Book/collection name
Geophysical Monograph Series Volume 129,Water, Mass and Energy Transfer in the Biosfere
ISBN
0-87590-988-4
Number of pages of the result
10
Pages from-to
265-274
Number of pages of the book
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Publisher name
AGU
Place of publication
Baltimore
UT code for WoS chapter
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