Ponding time, hydraulic conductivity, and sorptivity - experimental and numerical determination

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F23%3A94587" target="_blank" >RIV/60460709:41330/23:94587 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.researchgate.net/search.Search.html?query=Ponding+time%2C+hydraulic+conductivity%2C+and+sorptivity+%E2%80%93+experimental+and+numerical+determination&type=publication" target="_blank" >https://www.researchgate.net/search.Search.html?query=Ponding+time%2C+hydraulic+conductivity%2C+and+sorptivity+%E2%80%93+experimental+and+numerical+determination&type=publication</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2478/ats-2023-0004" target="_blank" >10.2478/ats-2023-0004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ponding time, hydraulic conductivity, and sorptivity - experimental and numerical determination

Popis výsledku v původním jazyce

Determination of actual soil sorptivity becomes one of the research preferences in the field of soil management and flash-flood protection. This Note presents an innovative approach to soil sorptivity determination. A single ring infiltration method, along with a simulation of rainfall of constant intensity, was used to measure ponding time tp. Hydraulic conductivity K was approximated from the analysis of the time series of the process of vertical non-steady cumulative infiltration appearing after the ponding time. Based on Philips infiltration theory, a simple equation was derived in order to calculate sorptivity S from ponding time, rainfall intensity, and saturated hydraulic conductivity. Numerically determined results of S show to closely correspond with theoretical values published in the literature. To the best of our knowledge, this process of numerical determination of K and S has not been published so far. Moreover, unlike the traditional methods, e.g. single or double-ring in filtration experiments, this method provides more precise and representative values of S, verified by ponding time, as the results refer to the original soil sorptivity, not the sorptivity determined after the ponding time (meaning sorptivity of the fully saturated environment) which tends to reach zero. Our assumption was definitely confirmed by field experimental determination of ponding time and selected soil hydrology characteristics.

Název v anglickém jazyce

Ponding time, hydraulic conductivity, and sorptivity - experimental and numerical determination

Popis výsledku anglicky

Determination of actual soil sorptivity becomes one of the research preferences in the field of soil management and flash-flood protection. This Note presents an innovative approach to soil sorptivity determination. A single ring infiltration method, along with a simulation of rainfall of constant intensity, was used to measure ponding time tp. Hydraulic conductivity K was approximated from the analysis of the time series of the process of vertical non-steady cumulative infiltration appearing after the ponding time. Based on Philips infiltration theory, a simple equation was derived in order to calculate sorptivity S from ponding time, rainfall intensity, and saturated hydraulic conductivity. Numerically determined results of S show to closely correspond with theoretical values published in the literature. To the best of our knowledge, this process of numerical determination of K and S has not been published so far. Moreover, unlike the traditional methods, e.g. single or double-ring in filtration experiments, this method provides more precise and representative values of S, verified by ponding time, as the results refer to the original soil sorptivity, not the sorptivity determined after the ponding time (meaning sorptivity of the fully saturated environment) which tends to reach zero. Our assumption was definitely confirmed by field experimental determination of ponding time and selected soil hydrology characteristics.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

10503 - Water resources

Projekt

<a href="/cs/project/TH02010802" target="_blank" >TH02010802: Systém včasné predikce přívalových povodní založený na přímém měření infiltrace</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Agricultura tropica et subtropica

ISSN

0231-5742

e-ISSN

1801-0571

Svazek periodika

56

Číslo periodika v rámci svazku

N

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

8

Strana od-do

33-40

Kód UT WoS článku

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EID výsledku v databázi Scopus

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