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Epting J, Scheidler S, Affolter A, et al. The thermal impact of subsurface building structures on urban groundwater resources - A paradigmatic example. Sci Total Environ. 2017;596:87-96doi: 10.1016/j.scitotenv.2017.03.296.
Epting, J., Scheidler, S., Affolter, A., Borer, P., Mueller, M. H., Egli, L., García-Gil, A., & Huggenberger, P. (2017). The thermal impact of subsurface building structures on urban groundwater resources - A paradigmatic example. The Science of the total environment, 59687-96. https://doi.org/10.1016/j.scitotenv.2017.03.296
Epting, Jannis, et al. "The thermal impact of subsurface building structures on urban groundwater resources - A paradigmatic example." The Science of the total environment vol. 596 (2017): 87-96. doi: https://doi.org/10.1016/j.scitotenv.2017.03.296
Epting J, Scheidler S, Affolter A, Borer P, Mueller MH, Egli L, García-Gil A, Huggenberger P. The thermal impact of subsurface building structures on urban groundwater resources - A paradigmatic example. Sci Total Environ. 2017 Oct 15;596:87-96. doi: 10.1016/j.scitotenv.2017.03.296. Epub 2017 Apr 17. PMID: 28426989.
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Sci Total Environ. 2017 Oct 15;596:87-96. doi: 10.1016/j.scitotenv.2017.03.296. Epub 2017 Apr 17.

The thermal impact of subsurface building structures on urban groundwater resources - A paradigmatic example.

The Science of the total environment

Jannis Epting, Stefan Scheidler, Annette Affolter, Paul Borer, Matthias H Mueller, Lukas Egli, Alejandro García-Gil, Peter Huggenberger

Affiliations

  1. Department of Environmental Sciences, Applied and Environmental Geology, University of Basel, Bernoullistr. 32, 4056 Basel, Switzerland. Electronic address: [email protected].
  2. Department of Environmental Sciences, Applied and Environmental Geology, University of Basel, Bernoullistr. 32, 4056 Basel, Switzerland.
  3. Agency for Environment and Energy Basel-Stadt (AUE BS), Hochbergstrasse 158, 4019 Basel, Switzerland.
  4. Geological Survey of Spain (IGME), C/ Manuel Lasala n° 44, 9° B, 50006 Zaragoza, Spain.

PMID: 28426989 DOI: 10.1016/j.scitotenv.2017.03.296

Abstract

Shallow subsurface thermal regimes in urban areas are increasingly impacted by anthropogenic activities, which include infrastructure development like underground traffic lines as well as industrial and residential subsurface buildings. In combination with the progressive use of shallow geothermal energy systems, this results in the so-called subsurface urban heat island effect. This article emphasizes the importance of considering the thermal impact of subsurface structures, which commonly is underestimated due to missing information and of reliable subsurface temperature data. Based on synthetic heat-transport models different settings of the urban environment were investigated, including: (1) hydraulic gradients and conductivities, which result in different groundwater flow velocities; (2) aquifer properties like groundwater thickness to aquitard and depth to water table; and (3) constructional features, such as building depths and thermal properties of building structures. Our results demonstrate that with rising groundwater flow velocities, the heat-load from building structures increase, whereas down-gradient groundwater temperatures decrease. Thermal impacts on subsurface resources therefore have to be related to the permeability of aquifers and hydraulic boundary conditions. In regard to the urban settings of Basel, Switzerland, flow velocities of around 1 md

Copyright © 2017 Elsevier B.V. All rights reserved.

Keywords: Heat-loads of buildings; Paradigmatic example; Subsurface structures; Subsurface urban heat island; Urban groundwater management

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