The Cryosphere
The Cryosphere
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Articles | Volume 19, issue 11
Articles | Volume 19, issue 11
https://doi.org/10.5194/tc-19-5485-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-19-5485-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 11
Research article
 | 
07 Nov 2025
Research article |  | 07 Nov 2025

New evidence on the microstructural localization of sulfur and chlorine in polar ice cores with implications for impurity diffusion

Pascal Bohleber, Nicolas Stoll, Piers Larkman, Rachael H. Rhodes, and David Clases

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Short summary
To avoid misinterpretation of impurity signals in ice cores, post-depositional changes need to be identified. Peak broadening with depth observed especially for S was previously related to diffusion in ice veins, but the exact physical mechanisms remain unclear. Our two-dimensional impurity maps by laser ablation inductively coupled plasma mass spectrometry were extended for the first time to S and Cl and support a view on diffusion not only through veins but also along grain boundaries.
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