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Volume 9, issue 4
The Cryosphere, 9, 1633–1648, 2015
https://doi.org/10.5194/tc-9-1633-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
The Cryosphere, 9, 1633–1648, 2015
https://doi.org/10.5194/tc-9-1633-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 20 Aug 2015

Research article | 20 Aug 2015

Retrieving the paleoclimatic signal from the deeper part of the EPICA Dome C ice core

J.-L. Tison et al.
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Alley, R. B., Perepezko, J. H., and Bentley, C. R.: Grain growth in polar ice, I. Theory, J. Glaciol., 32, 415–424, 1986.
Baker, I. and Cullen, D.: SEM/EDS observations of impurities in polar ice: artefacts or not?, J. Glaciol., 49, 184–190, 2003.
Bender, M. L.: Orbital tuning chronology for the Vostok climate record supported by trapped gas composition, Earth Planet. Sci. Lett., 204, 275–289, 2002.
Boulton, G. S.: Processes of erosion on different substrata, J. Glaciol., 23, 15–38, 1979.
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The oldest paleoclimatic information is buried within the lowermost layers of deep ice cores. It is therefore essential to judge how deep these records remain unaltered. We study the bottom 60 meters of the EPICA Dome C ice core from central Antarctica to show that the paleoclimatic signal is only affected at the small scale (decimeters) in terms of some of the global ice properties. However our data suggest that the time scale has been considerably distorted by mechanical stretching.
The oldest paleoclimatic information is buried within the lowermost layers of deep ice cores. It...
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