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Determination of spatial and temporal variability of soil hydraulic conductivity for urban runoff modelling
ID
Radinja, Matej
(
Author
),
ID
Vidmar, Ines
(
Author
),
ID
Atanasova, Nataša
(
Author
),
ID
Mikoš, Matjaž
(
Author
),
ID
Šraj, Mojca
(
Author
)
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MD5: 84209CB9E14A464585769B79D9B96F67
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https://www.mdpi.com/2073-4441/11/5/941
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Abstract
Soil hydraulic conductivity has a direct influence on infiltration rate, which is of great importance for modelling and design of surface runoff and stormwater control measures. In this study, three measuring techniques for determination of soil hydraulic conductivity were compared in an urban catchment in Ljubljana, Slovenia. Double ring (DRI) and dual head infiltrometer (DHI) were applied to measure saturated hydraulic conductivity (K$_s$) and mini disk infiltrometer (MDI) was applied to measure unsaturated hydraulic conductivity (K), which was recalculated in K$_s$ in order to compare the results. Results showed significant differences between investigated techniques, namely DHI showed 6.8 times higher values of K$_s$ in comparison to DRI. On the other hand, K$_s$ values obtained by MDI and DRI exhibited the lowest difference. MDI measurements in 12 locations of the small plot pointed to the spatial variability of K ranging between 73%-89% as well as to temporal variability within a single location of 27%-99%. Additionally, a reduction of K caused by the effect of drought-induced water repellency was observed. Moreover, results indicate that hydrological models could be enhanced using different scenarios by employing a range of K values based on soil conditions.
Language:
English
Keywords:
hydraulic conductivity
,
urban runoff modelling
,
mini disk infiltrometer
,
double ring infiltrometer
,
dual head infiltrometer
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FGG - Faculty of Civil and Geodetic Engineering
NTF - Faculty of Natural Sciences and Engineering
Publication status:
Published
Publication version:
Version of Record
Year:
2019
Number of pages:
15 str.
Numbering:
Vol. 11, iss. 5, art. 941
PID:
20.500.12556/RUL-128429
UDC:
556.5
ISSN on article:
2073-4441
DOI:
10.3390/w11050941
COBISS.SI-ID:
8794209
Publication date in RUL:
13.07.2021
Views:
1778
Downloads:
194
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Record is a part of a journal
Title:
Water
Shortened title:
Water
Publisher:
Molecular Diversity Preservation International - MDPI
ISSN:
2073-4441
COBISS.SI-ID:
36731653
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:
05.05.2019
Secondary language
Language:
Slovenian
Keywords:
hidravlična prepustnost
,
modeliranje urbanega odtoka
,
infiltrometer z mini diskom
,
infiltrometer z dvojnim obročem
,
infiltrometer z enojnim obročem
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
P2-0180
Name:
Vodarstvo in geotehnika: orodja in metode za analize in simulacije procesov ter razvoj tehnologij
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