20.500.12556/RUL-128429 Determination of spatial and temporal variability of soil hydraulic conductivity for urban runoff modelling 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. hydraulic conductivity urban runoff modelling mini disk infiltrometer double ring infiltrometer dual head infiltrometer hidravlična prepustnost modeliranje urbanega odtoka infiltrometer z mini diskom infiltrometer z dvojnim obročem infiltrometer z enojnim obročem true false true Angleški jezik Slovenski jezik Članek v reviji 2021-07-13 13:23:02 2021-07-13 13:23:07 2022-09-07 04:15:08 0000-00-00 00:00:00 2019 0 0 15 str. iss. 5, art. 941 Vol. 11 2019 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 556.5 2073-4441 10.3390/w11050941 8794209 RAZ_Radinja_Matej_2019.pdf RAZ_Radinja_Matej_2019.pdf 1 84209CB9E14A464585769B79D9B96F67 30608768dc5a7c6c8c9a76d9654fe2b296c98f7f14fd9fba794d23eb17cfa383 5669d282-e3cd-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=145168 https://www.mdpi.com/2073-4441/11/5/941 1 8dc76734-e3cc-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=145167 Fakulteta za gradbeništvo in geodezijo Naravoslovnotehniška fakulteta 0 0 0