The Cryosphere
The Cryosphere
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Articles | Volume 12, issue 1
Articles | Volume 12, issue 1
https://doi.org/10.5194/tc-12-169-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-12-169-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 12, issue 1
Research article
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17 Jan 2018
Research article | Highlight paper |  | 17 Jan 2018

On the similarity and apparent cycles of isotopic variations in East Antarctic snow pits

Thomas Laepple, Thomas Münch, Mathieu Casado, Maria Hoerhold, Amaelle Landais, and Sepp Kipfstuhl

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Short summary
We explain why snow pits across different sites in East Antarctica show visually similar isotopic variations. We argue that the similarity and the apparent cycles of around 20  cm in the δD and δ18O variations are the result of a seasonal cycle in isotopes, noise, for example from precipitation intermittency, and diffusion. The near constancy of the diffusion length across many ice-coring sites explains why the structure and cycle length is largely independent of the accumulation conditions.
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