Tracing the entrapped air in heterogeneous soil by means of magnetic resonance imaging

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F10%3A00168102" target="_blank" >RIV/68407700:21110/10:00168102 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Tracing the entrapped air in heterogeneous soil by means of magnetic resonance imaging

Popis výsledku v původním jazyce

Magnetic resonance imaging (MRI) was used to study the process of infiltration in an undisturbed core of coarse sandy loam during a repeated ponded infiltration experiment (RPI), in which the first infiltration was conducted into a naturally dry sample and the second infiltration into a wet sample. The primary aim was to assess the change in distribution of entrapped air in the undisturbed soil sample and its influence on steady-state flow rates. Concurrently with the MRI monitoring, pressure heads andfluxes were measured. Multiple-slice maps of longitudinal relaxivity (T1), which is a parameter related to the surface/ volume ratio, and proton density (M0), related to the water content, covered almost the entire volume of the sample. The drop in the quasi-steady-state flow rate that was observed between the first and second infitlration runs corresponded to the decline in T1 and M0 in the upper 4 cm of the sample.

Název v anglickém jazyce

Tracing the entrapped air in heterogeneous soil by means of magnetic resonance imaging

Popis výsledku anglicky

Magnetic resonance imaging (MRI) was used to study the process of infiltration in an undisturbed core of coarse sandy loam during a repeated ponded infiltration experiment (RPI), in which the first infiltration was conducted into a naturally dry sample and the second infiltration into a wet sample. The primary aim was to assess the change in distribution of entrapped air in the undisturbed soil sample and its influence on steady-state flow rates. Concurrently with the MRI monitoring, pressure heads andfluxes were measured. Multiple-slice maps of longitudinal relaxivity (T1), which is a parameter related to the surface/ volume ratio, and proton density (M0), related to the water content, covered almost the entire volume of the sample. The drop in the quasi-steady-state flow rate that was observed between the first and second infitlration runs corresponded to the decline in T1 and M0 in the upper 4 cm of the sample.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DA - Hydrologie a limnologie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Vadose Zone Journal

ISSN

1539-1663

e-ISSN

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Svazek periodika

9

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

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Kód UT WoS článku

000277718000017

EID výsledku v databázi Scopus

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