Určování půdních hydraulických charakteristik v pramenných oblastech

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F05%3A01116856" target="_blank" >RIV/68407700:21110/05:01116856 - 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

Estimation of the Soil Hydraulic Properties in Headwater Territory

Popis výsledku v původním jazyce

Prediction of water flow in porous systems relies on appropriate description of unsaturated hydraulic properties. Hydraulic functions of soils are varying in both time and space. This contribution aims at quantifying the spatio-temporal variability of soil hydraulic characteristics at highly heterogeneous headwater watershed. Pressure head data recorded by tensiometers within few consecutive years were used. Water regime in the soil profile was simulated with code based on Richards' equation. To simplify the description of spatial variability of hydraulic properties, the concept of linear variability of porous medium is used. Inverse modeling was performed in order to minimize discrepancies between the model response and measured pressure heads. The scaling factors were used to upscale the reference parameters by means of inverse modeling. From the numerical experiments, it follows that the spatial variability of the hydraulic characteristics prevails over temporal variations.

Název v anglickém jazyce

Estimation of the Soil Hydraulic Properties in Headwater Territory

Popis výsledku anglicky

Prediction of water flow in porous systems relies on appropriate description of unsaturated hydraulic properties. Hydraulic functions of soils are varying in both time and space. This contribution aims at quantifying the spatio-temporal variability of soil hydraulic characteristics at highly heterogeneous headwater watershed. Pressure head data recorded by tensiometers within few consecutive years were used. Water regime in the soil profile was simulated with code based on Richards' equation. To simplify the description of spatial variability of hydraulic properties, the concept of linear variability of porous medium is used. Inverse modeling was performed in order to minimize discrepancies between the model response and measured pressure heads. The scaling factors were used to upscale the reference parameters by means of inverse modeling. From the numerical experiments, it follows that the spatial variability of the hydraulic characteristics prevails over temporal variations.

Druh

D - Stať ve sborníku

CEP obor

DA - Hydrologie a limnologie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2005

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of Workshop 2005

ISBN

80-01-03201-9

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

930-931

Název nakladatele

ČVUT

Místo vydání

Praha

Místo konání akce

Praha

Datum konání akce

21. 3. 2005

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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