Articles | Volume 15, issue 7
The Cryosphere, 15, 3523–3538, 2021
https://doi.org/10.5194/tc-15-3523-2021

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

The Cryosphere, 15, 3523–3538, 2021
https://doi.org/10.5194/tc-15-3523-2021

Research article 29 Jul 2021

Research article | 29 Jul 2021

Two-dimensional impurity imaging in deep Antarctic ice cores: snapshots of three climatic periods and implications for high-resolution signal interpretation

Pascal Bohleber et al.

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Latest update: 22 Oct 2021
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Short summary
Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) offers micro-destructive, micrometer-scale impurity analysis of ice cores. For improved understanding of the LA-ICP-MS signals, novel 2D impurity imaging is applied to selected glacial and interglacial samples of Antarctic deep ice cores. This allows evaluating the 2D impurity distribution in relation to ice crystal features and assessing implications for investigating highly thinned climate proxy signals in deep polar ice.