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Reference Category Journals
DOI 10.1007/s12665-011-1285-4
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Title (Primary) Coupling hydrogeological with surface runoff model in a Poltva case study in Western Ukraine
Author Delfs, J.-O.; Blumensaat, F.; Wang, W. ORCID logo ; Krebs, P.; Kolditz, O. ORCID logo
Source Titel Environmental Earth Sciences
Year 2012
Department ENVINF
Volume 65
Issue 5
Page From 1439
Page To 1457
Language englisch
Keywords Integrated surface–subsurface flow modelling; Urban water; Conductance concept; Sensitivity analysis; Random walk particle tracking (RWPT); Poltva basin (Western Ukraine)

This paper presents the hydrological coupling of the software framework OpenGeoSys (OGS) with the EPA Storm Water Management Model (SWMM). Conceptual models include the Saint Venant equation for river flow, the 2D Darcy equations for confined and unconfined groundwater flow, a two-way hydrological coupling flux in a compartment coupling approach (conductance concept), and Lagrangian particles for solute transport in the river course. A SWMM river–OGS aquifer inter-compartment coupling flux is examined for discharging groundwater in a systematic parameter sensitivity analysis. The parameter study involves a small perturbation (first-order) sensitivity analysis and is performed for a synthetic test example base-by-base through a comprehensive range of aquifer parametrizations. Through parametrization, the test cases enables to determine the leakance parameter for simulating streambed clogging and non-ocillatory river-aquifer water exchange rates with the sequential (partitioned) coupling scheme. The implementation is further tested with a hypothetical but realistic 1D river–2D aquifer model of the Poltva catchment, where discharging groundwater in the upland area affects the river–aquifer coupling fluxes downstream in the river course (propagating feedbacks). Groundwater contribution in the moving river water is numerically determined with Lagrangian particles. A numerical experiment demonstrates that the integrated river–aquifer model is a serviceable and realistic constituent in a complete compartment model of the Poltva catchment.

Persistent UFZ Identifier
Delfs, J.-O., Blumensaat, F., Wang, W., Krebs, P., Kolditz, O. (2012):
Coupling hydrogeological with surface runoff model in a Poltva case study in Western Ukraine
Environ. Earth Sci. 65 (5), 1439 - 1457 10.1007/s12665-011-1285-4