The Cryosphere
The Cryosphere
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Articles | Volume 17, issue 1
Articles | Volume 17, issue 1
https://doi.org/10.5194/tc-17-195-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-17-195-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
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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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.
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