Articles | Volume 17, issue 1
Research article
16 Jan 2023
Research article |  | 16 Jan 2023

Geothermal heat flux is the dominant source of uncertainty in englacial-temperature-based dating of ice rise formation

Aleksandr Montelli and Jonathan Kingslake

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Cited articles

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Albrecht, T., Winkelmann, R., and Levermann, A.: Glacial-cycle simulations of the Antarctic Ice Sheet with the Parallel Ice Sheet Model (PISM) – Part 2: Parameter ensemble analysis, The Cryosphere, 14, 633–656,, 2020b. 
Alley, R. B. and Koci, B. R.: Recent warming in central Greenland?, Ann. Glaciol., 14, 6–8, 1990. 
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Short summary
Thermal modelling and Bayesian inversion techniques are used to evaluate the uncertainties inherent in inferences of ice-sheet evolution from borehole temperature measurements. We show that the same temperature profiles may result from a range of parameters, of which geothermal heat flux through underlying bedrock plays a key role. Careful model parameterisation and evaluation of heat flux are essential for inferring past ice-sheet evolution from englacial borehole thermometry.