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Volume 11, issue 5 | Copyright

Special issue: Oldest Ice: finding and interpreting climate proxies in ice...

The Cryosphere, 11, 2231-2246, 2017
https://doi.org/10.5194/tc-11-2231-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 20 Sep 2017

Research article | 20 Sep 2017

Geothermal flux and basal melt rate in the Dome C region inferred from radar reflectivity and heat modelling

Olivier Passalacqua et al.
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Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Olivier Passalacqua on behalf of the Authors (19 Jun 2017)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (17 Jul 2017) by Kenny Matsuoka
RR by Anonymous Referee #2 (29 Jul 2017)
ED: Publish subject to technical corrections (12 Aug 2017) by Kenny Matsuoka
AR by Olivier Passalacqua on behalf of the Authors (19 Aug 2017)  Author's response    Manuscript
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As the Dome C region is a key area for oldest-ice research, we need to better constrain the geothermal flux (GF) so that past basal melt rates are well constrained. Our inverse heat model significantly reduces the confidence intervals of the GF regional field around Dome C, which ranges from 48 to 60 mW m−2. Radar echoes need to be interpreted knowing the time lag of the climate signal to reach the bed. Several old-ice targets are confirmed and a new one is suggested, in which the GF is very low.
As the Dome C region is a key area for oldest-ice research, we need to better constrain the...
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