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Exchange and pathways of deep and shallow groundwater in different climate and permafrost conditions using the Forsmark site, Sweden, as an example catchment
Department of Physical Geography and Quaternary Geology, Bert Bolin Centre for Climate Research, Stockholm University, 106 91, Stockholm, Sweden;Swedish Nuclear Fuel and Waste Management Co, Box 250, 101 24, Stockholm, Sweden.
Department of Physical Geography and Quaternary Geology, Bert Bolin Centre for Climate Research, Stockholm University, 106 91, Stockholm, Sweden;Swedish Nuclear Fuel and Waste Management Co, Box 250, 101 24, Stockholm, Sweden.ORCID iD: 0000-0001-9251-5367
Swedish Nuclear Fuel and Waste Management Co, Box 250, 101 24, Stockholm, Sweden.
DHI Sweden AB, Lilla Bommen 1, 411 04, Göteborg, Sweden.
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2013 (English)In: Hydrogeology Journal, ISSN 14312174, Vol. 21, no 1, p. 225-237Article in journal (Refereed) Published
Abstract [en]

This study simulates and quantifies the exchange and the pathways of deep and shallow groundwater flow and solute transport under different climate and permafrost conditions, considering the example field case of the coastal Forsmark catchment in Sweden. A number of simulation scenarios for different climate and permafrost condition combinations have been performed with the three-dimensional groundwater flow and transport model MIKE SHE. Results show generally decreasing vertical groundwater flow with depth, and smaller vertical flow under permafrost conditions than under unfrozen conditions. Also the overall pattern of both the vertical and the horizontal groundwater flow, and the water exchange between the deep and shallow groundwater systems, change dramatically in the presence of permafrost relative to unfrozen conditions. However, although the vertical groundwater flow decreases significantly in the presence of permafrost, there is still an exchange of water between the unfrozen groundwater system below the permafrost and the shallow groundwater in the active layer, via taliks. ‘Through taliks’ tend to prevail in areas that constitute groundwater discharge zones under unfrozen conditions, which then mostly shift to net recharge zones (through taliks with net downward flow) under permafrost conditions.

Place, publisher, year, edition, pages
Springer Nature , 2013. Vol. 21, no 1, p. 225-237
Keywords [en]
Climate change, Groundwater flow, Numerical modelling, Permafrost hydrology
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-330378DOI: 10.1007/s10040-012-0906-7ISI: 000314333600017Scopus ID: 2-s2.0-84873524803OAI: oai:DiVA.org:kth-330378DiVA, id: diva2:1777561
Note

QC 20230630

Available from: 2023-06-29 Created: 2023-06-29 Last updated: 2023-07-31Bibliographically approved

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Publisher's full textScopushttps://doi.org/10.1007%2Fs10040-012-0906-7

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Selroos, Jan-Olof

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