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  Hydrogeologic and Thermal Effects of Glaciations on the Intracontinental Basins in Central and Northern Europe

Frick, M., Cacace, M., Klemann, V., Tarasov, L., Scheck-Wenderoth, M. (2022): Hydrogeologic and Thermal Effects of Glaciations on the Intracontinental Basins in Central and Northern Europe. - Frontiers in Water, 4, 818469.
https://doi.org/10.3389/frwa.2022.818469

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Frick, M.1, Author              
Cacace, Mauro1, Author              
Klemann, V.2, Author              
Tarasov, Lev3, Author
Scheck-Wenderoth, Magdalena1, Author              
Affiliations:
14.5 Basin Modelling, 4.0 Geosystems, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146042              
21.3 Earth System Modelling, 1.0 Geodesy, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146027              
3External Organizations, ou_persistent22              

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 Abstract: We use a fully coupled hydro-thermal model (TH) to quantify changes in the pore pressure and temperature distribution following the Last Glacial Maximum (LGM) in the intracontinental basins in Central and Northern Europe. We demonstrate that even without considering a direct mechanical coupling from the visco-elastic lithosphere rebound, the system is, at present-day, in a state of hydrogeologic and thermal disequilibrium as a result of the past ice sheet dynamics. We find that the local geology exerts an additional control on the subsurface response to imposed glacial loading, as evidenced by a contrasting thermal and pore pressure configuration in time and space. Highest rates of pore pressure dissipation are restricted to crustal domains that underwent substantial glacial loading, while the majority of the sedimentary sub-basins show a prominent signature of hydraulic disequilibrium (overpressure) at present. Groundwater-driven convective cooling and heating during the advance and retreat of the ice cap occurred mainly within sedimentary rocks, domains where thermal equilibration is ongoing. The spatial correlation between modeled pore pressure dissipation rates and postglacial uplift rates is indicative of a complex and transient hydrogeological system structurally connected to the viscous tail of the ongoing isostatic adjustment after the LGM, with important implications for assessing the long-term mechanical stability of this intraplate setting.

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Language(s): eng - English
 Dates: 2022-05-032022
 Publication Status: Finally published
 Pages: 17
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.3389/frwa.2022.818469
GFZPOF: p4 T8 Georesources
OATYPE: Gold Open Access
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Title: Frontiers in Water
Source Genre: Journal, Scopus, oa, Emerging Sources Citation Index
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Pages: - Volume / Issue: 4 Sequence Number: 818469 Start / End Page: - Identifier: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/20220119
Publisher: Frontiers