Journal article

Heat flow and inferred ground surface temperature history at Tynong North, southeastern Australia

G Beardsmore, M Sandiford, K Gordon, M McLean, S Egan, S McLaren

Australian Journal of Earth Sciences | Taylor & Francis | Published : 2017

Abstract

Borehole temperature data have the potential to record historical variations in ground and air surface temperature, yet very few reliable, purpose-drilled, boreholes are available to explore such impacts, particularly in the southern hemisphere. The 400-m deep Tynong-1 borehole, approximately 65 km ESE of Melbourne, Australia, was drilled specifically to determine conductive heat flow and provides a unique dataset for evaluating ground surface temperature history in southeastern Australia. Steady-state conductive heat flow of 87 ± 1 mW m−2 was determined in the deeper borehole sections, with measured temperature profiles clearly demonstrating a progressive divergence of the observed temperat..

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