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

Bohleber, Pascal; Roman, Marco; Šala, Martin; Delmonte, Barbara; Stenni, Barbara; Barbante, Carlo

doi:https://doi.org/10.5194/tc-15-3523-2021

Articles | Volume 15, issue 7

https://doi.org/10.5194/tc-15-3523-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

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

https://doi.org/10.5194/tc-15-3523-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 15, issue 7

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, Marco Roman, Martin Šala, Barbara Delmonte, Barbara Stenni, and Carlo Barbante

Supplement

https://doi.org/10.5194/tc-15-3523-2021-supplement

Data sets

Chemical impurity distribtion (Na, Mg, Sr) in the EPICA Dome C ice core bags 1065 and 3092 and Talos Dome ice core bag 375-B1 obtained from 2D imaging with LA-ICP-MS P. Bohleber, M. Roman, M. Šala, B. Delmonte, B. Stenni, and C. Barbante https://doi.pangaea.de/10.1594/PANGAEA.933333

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.