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Quarterly Journal of Engineering Geology & Hydrogeology

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Anthropogenic thermogeological ‘anomaly’ in Gateshead, Tyne and Wear, UK

¹ Holymoor Consultancy Ltd, 8 Heaton Street, Chesterfield S40 3AQ, UK
² Sir Joseph Swan Institute, Devonshire Building, University of Newcastle, Newcastle upon Tyne NE1 7RU, UK
³ Geowarmth Heat Pumps Ltd., 6 Back Goldspink Lane, Sandyford, Newcastle upon Tyne NE2 1NU, UK
⁴ School of Built Environment, Ellison Building, Northumbria University, Newcastle upon Tyne NE1 8ST, UK

Correspondence: ^* Corresponding author (e-mail: david{at}holymoor.co.uk)

Two subsurface thermal profiles were measured in geothermal ‘closed-loop’ boreholes at Gateshead, Tyne and Wear, UK. They show a clear reversed gradient (temperature decreases with depth) down to at least 55 m, and the subsurface temperatures are generally warmer than those predicted purely from annual average soil temperature data and the known geothermal heat flux. This suggests that historical downward conductive heat ‘leakage’ from the long-established Gateshead urban environment has modified subsurface temperatures to depths of at least 55 m. Although poorly documented in the UK, a similar ‘urban thermogeological heat island’ effect has been noted from Canada, Sweden, Ireland and Japan.

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