Hydrogeological and hydrochemical modelling of density-driven flow in the Tiberias Basin, in particular between Ha'on and Tiberias Regions, Jordan Valley
Zusammenfassung der Projektergebnisse
The aim of this research was the identification of regional and transboundary sources endangering Lake Kinneret (Lake Tiberias or Sea of Galilee) which is the most important fresh water reservoir of the area. The tasks are achieved by a multidisciplinary approach involving: (i) numerical modelling of densitydriven flow processes (i.e., coupled heat and lfow), (ii) hydrochemical studies, both supplemented by (iii) investigations of subsurface structures. (i) Numerical modelling is done by applying commercial software. The 3D regional-scale model of density-driven flow revealed the different interactions between fresh groundwater thermal flow and convective processes controlled by faults, (ii) Hydrochemical studies include major, minor and rare earth elements (REE) as well as isotope studies. Geochemical data interpretation and inverse modelling are supported by PHREEQC. Hydrochemical field investigations are carried out in the Kinnarot basin and ist framing Heights, i.e. the Golan, Eastern Galilee and northern Ajlun Mts to search for indications of the presence of deep, relic saline groundwater infested by the inferred Ha’on mother-brine. These approaches are supplemented by (iii) statistical data analysis and GIS software for the definition of the subsurface structures and fault patterns. The applied approaches support the hypothesis that a structural feature exists along the principle axis of the Lower Yarmouk Gorge, which may act as a complex conduit-barrier system that enhances axial fluid flow, inhibits perpendicular lateral fluxes, and drains them westwards, thus compartmentalizing the adjacent N–S and S–N flow systems of the Golan Heights and the Ajlun Plateau, respectively. This study highlighted the impact that structural features exert on transport processes and provide an example of multi-disciplinary investigation of complex aquifer systems, particularly in cases of existent heterogeneities, structural uncertainty and limited field accessibility. The results of this work are expected to establish suitable water-management strategies for the exploitation of freshwater from the lake and from the adjacent aquifers while reducing salinization processes induced by both local and regional brines.
Projektbezogene Publikationen (Auswahl)
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2016. 2D and 3D coexisting modes of thermal convection in fractured hydrothermal systems - Implications for transboundary flow in the Lower Yarmouk Gorge. Marine and Petroleum Geology 78, 750-758
Magri, F., Möller, S., Inbar, N., Möller, P., Raggad, M., Rödiger, T., Rosenthal, E., Siebert, C.
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2016. Hydrochemical considerations for identifying water from basaltic aquifers: The Israeli experience. Journal of Hydrology: Regional Studies, 5, 33-47
Möller, P., Rosenthal, E., Inbar, N., Magri, F.
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2016. Inverse problem to constrain hydraulic and thermal parameters inducing anomalous heat flow in the Lower Yarmouk Gorge. Energy Procedia, 97, 419–426
Goretzki, N., Inbar, N., Kühn, M., Möller P., Rosenthal, E., Schneider, M., Siebert C., Raggad, M. Magri, F.
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2016. Thermal convection of temperature-dependent viscous fluids within three-dimensional faulted geothermal systems: estimation from linear and numerical analyses. Water Resources Research, 52, 2855–2867
Malkovsky, V.I., Magri, F.
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2017. Assessing anthropogenic impacts on limited water resources under semi-arid conditions: three-dimensional transient regional modelling in Jordan. Hydrogeology Journal, 25(7), 2139-2149
Rödiger, T., Magri, F., Geyer, S., Morandage, S.T., Ali Subah, H.E., Alraggad, M., Siebert, C.
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2017. Thermal convection of viscous fluids in a faulted system: 3D benchmark for numerical codes. Energy Procedia, 125, 310-317
Magri, F., Cacace, M., Fischer, T., Kolditz, O., Wang, W., Watanabe, N.
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(2018). Hydrogeochemical prospecting for evaporate and clay deposits in Harrat ash Shaam basalts, Jordan. Journal of Geochemical Exploration 186, 243-255
Salameh, E., Toll, M., Raggad, M.
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2018. Numerical representation of rainfall field in basins of the Upper Jordan River and of the Yarmouk River. Environ Earth Sci 77: 798
Shentsis, I., Inbar, N., Rosenthal, E., Magri, F.
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2018. The effect of hydraulic anisotropies on intensely exploited groundwater resources: the numerical evaluation of a hydrothermal transboundary aquifer system in the Middle East. Hydrogeol J.
Tzoufka,K., Magri, F. Rödiger, T., Inbar, i., Shalev, E., Möller, P., Raggad, M, Rosenthal, E., Siebert, C.
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2019. Faulting patterns in the Lower Yarmouk Gorge potentially influence groundwater flow paths. Hydrol. Earth Syst. Sci., 23(2), 763-771
Inbar, N., Rosenthal, E., Magri, F., Alraggad, M., Möller, P., Flexer, A., Siebert, C.
