Articles | Volume 15, issue 4
The Cryosphere, 15, 1881–1888, 2021
https://doi.org/10.5194/tc-15-1881-2021

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

The Cryosphere, 15, 1881–1888, 2021
https://doi.org/10.5194/tc-15-1881-2021

Brief communication 19 Apr 2021

Brief communication | 19 Apr 2021

Brief communication: New radar constraints support presence of ice older than 1.5 Myr at Little Dome C

David A. Lilien et al.

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Interactive discussion

Status: closed
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
ED: Publish subject to minor revisions (review by editor) (07 Mar 2021) by Joseph MacGregor
AR by David Lilien on behalf of the Authors (08 Mar 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish subject to technical corrections (10 Mar 2021) by Joseph MacGregor
AR by David Lilien on behalf of the Authors (11 Mar 2021)  Author's response    Manuscript
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Short summary
We collected radar data between EDC, an ice core spanning ~800 000 years, and BELDC, the site chosen for a new oldest ice core at nearby Little Dome C. These data allow us to identify 50 % older internal horizons than previously traced in the area. We fit a model to the ages of those horizons at BELDC to determine the age of deep ice there. We find that there is likely to be 1.5 Myr old ice ~265 m above the bed, with sufficient resolution to preserve desired climatic information.