In: Journal of Hydrology and Hydromechanics, vol. 66, no. 2
Vilim Filipović - Thomas Weninger - Lana Filipović - Andreas Schwen - Keith L. Bristow - Sophie Zechmeister-Boltenstern - Sonja Leitner
Detaily:
Rok, strany: 2018, 170 - 180
Kľúčové slová:
Inverse modeling; Water and ethanol infiltration; SHP estimation; Water dynamics; HYDRUS (2D/3D).
URL originálneho zdroja: http://www.ih.sav.sk/jhh
O článku:
Global climate change is projected to continue and result in prolonged and more intense droughts, which can
increase soil water repellency (SWR). To be able to estimate the consequences of SWR on vadose zone hydrology, it is
important to determine soil hydraulic properties (SHP). Sequential modeling using HYDRUS (2D/3D) was performed on
an experimental field site with artificially imposed drought scenarios (moderately M and severely S stressed) and a control
plot. First, inverse modeling was performed for SHP estimation based on water and ethanol infiltration experimental
data, followed by model validation on one selected irrigation event. Finally, hillslope modeling was performed to assess
water balance for 2014. Results suggest that prolonged dry periods can increase soil water repellency. Inverse modeling
was successfully performed for infiltrating liquids, water and ethanol, with R2 and model efficiency (E) values both >
0.9. SHP derived from the ethanol measurements showed large differences in van Genuchten-Mualem (VGM) parameters
for the M and S plots compared to water infiltration experiments. SWR resulted in large saturated hydraulic conductivity
(Ks) decrease on the M and S scenarios. After validation of SHP on water content measurements during a selected
irrigation event, one year simulations (2014) showed that water repellency increases surface runoff in non-structured
soils at hillslopes.
Ako citovať:
ISO 690:
Filipović, V., Weninger, T., Filipović, L., Schwen, A., Bristow, K., Zechmeister-Boltenstern, S., Leitner, S. 2018. Inverse estimation of soil hydraulic properties and water repellency following
artificially induced drought stress. In Journal of Hydrology and Hydromechanics, vol. 66, no.2, pp. 170-180. 0042-790X (until 2019) .
APA:
Filipović, V., Weninger, T., Filipović, L., Schwen, A., Bristow, K., Zechmeister-Boltenstern, S., Leitner, S. (2018). Inverse estimation of soil hydraulic properties and water repellency following
artificially induced drought stress. Journal of Hydrology and Hydromechanics, 66(2), 170-180. 0042-790X (until 2019) .