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The deep thermal field of the Upper Rhine Graben

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/persons/resource/freymark

Freymark,  J.
6.1 Basin Modelling, 6.0 Geotechnologies, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/sippel

Sippel,  Judith
6.1 Basin Modelling, 6.0 Geotechnologies, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/leni

Scheck-Wenderoth,  Magdalena
6.1 Basin Modelling, 6.0 Geotechnologies, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Bär,  Kristian
External Organizations;

/persons/resource/manfred

Stiller,  Manfred
2.7 Near-surface Geophysics, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Fritsche,  Johann-Gerhard
External Organizations;

Kracht,  Matthias
External Organizations;

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Zitation

Freymark, J., Sippel, J., Scheck-Wenderoth, M., Bär, K., Stiller, M., Fritsche, J.-G., Kracht, M. (2017): The deep thermal field of the Upper Rhine Graben. - Tectonophysics, 694, 114-129.
https://doi.org/10.1016/j.tecto.2016.11.013


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_1862899
Zusammenfassung
The Upper Rhine Graben has a significant socioeconomic relevance as it provides a great potential for geothermal energy production. The key for the utilisation of this energy resource is to understand the controlling factors of the thermal field in this area. We have therefore built a data-based lithospheric-scale 3D structural model of the Upper Rhine Graben and its adjacent areas. In addition, 3D gravity modelling was performed to constrain the internal structure of the crystalline crust consistent with seismic information. Based on this lithosphere scale 3D structural model the present-day conductive thermal field was calculated and compared to measured temperatures. Our results show that the regional thermal field is mainly controlled by the configuration of the upper crust, which has different thermal properties for the Variscan and Alpine domains. Temperature maxima are predicted for the Upper Rhine Graben where thick insulating Cenozoic sediments cause a thermal blanketing effect and where the underlying crustal units are characterised by high radiogenic heat production. The comparison of calculated and measured temperatures shows a reasonable fit although local misfits indicate, as expected, an additional convective influence of fluid flow on the thermal field of the Upper Rhine Graben.