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. 
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An, M. J., Wiens, D. A., Zhao, Y., Feng, M., Nyblade, A., Kanao, M. L., Li, Y., Maggi, A., and Lévêque, J.: Temperature, lithosphere-asthenosphere boundary, and heat flux beneath the Antarctic Plate inferred from seismic velocities, J. Geophys. Res.-Sol. Ea., 120, 8720–8742, 2015. 
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.