Determination of spatial and temporal variability of soil hydraulic conductivity for urban runoff modelling

Radinja, Matej (avtor), Vidmar, Ines (avtor), Atanasova, Nataša (avtor), Mikoš, Matjaž (avtor), Šraj, Mojca (avtor)

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.

• Jezik: Angleški jezik
• Ključne besede: hydraulic conductivity, urban runoff modelling, mini disk infiltrometer, double ring infiltrometer, dual head infiltrometer
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FGG - Fakulteta za gradbeništvo in geodezijo ; NTF - Naravoslovnotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2019
• Št. strani: 15 str.
• Številčenje: Vol. 11, iss. 5, art. 941
• PID: 20.500.12556/RUL-128429
• UDK: 556.5
• ISSN pri članku: 2073-4441
• DOI: 10.3390/w11050941
• COBISS.SI-ID: 8794209
• Datum objave v RUL: 13.07.2021

Gradivo je del revije

• Naslov: Water
• Skrajšan naslov: Water
• Založnik: Molecular Diversity Preservation International - MDPI
• ISSN: 2073-4441
• COBISS.SI-ID: 36731653

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 05.05.2019

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: hidravlična prepustnost, modeliranje urbanega odtoka, infiltrometer z mini diskom, infiltrometer z dvojnim obročem, infiltrometer z enojnim obročem

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0180
• Naslov: Vodarstvo in geotehnika: orodja in metode za analize in simulacije procesov ter razvoj tehnologij