Articles | Volume 11, issue 5
https://doi.org/10.5194/tc-11-2175-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/tc-11-2175-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
12 Sep 2017
Research article |
| 12 Sep 2017
Constraints on post-depositional isotope modifications in East Antarctic firn from analysing temporal changes of isotope profiles
Alfred Wegener Institute Helmholtz Centre for Polar and
Marine Research, Telegrafenberg A43, 14473 Potsdam, Germany
Institute of Physics and Astronomy, University of Potsdam,
Karl-Liebknecht-Str. 24/25, 14476 Potsdam, Germany
Sepp Kipfstuhl
Alfred Wegener Institute Helmholtz Centre for Polar and
Marine Research, Am Alten Hafen 26, 27568 Bremerhaven, Germany
Johannes Freitag
Alfred Wegener Institute Helmholtz Centre for Polar and
Marine Research, Am Alten Hafen 26, 27568 Bremerhaven, Germany
Hanno Meyer
Alfred Wegener Institute Helmholtz Centre for Polar and
Marine Research, Telegrafenberg A43, 14473 Potsdam, Germany
Thomas Laepple
Alfred Wegener Institute Helmholtz Centre for Polar and
Marine Research, Telegrafenberg A43, 14473 Potsdam, Germany
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Latest update: 17 Jul 2025
Short summary
The importance of post-depositional changes for the temperature interpretation of water isotopes is poorly constrained by observations. Here, for the first time, temporal isotope changes in the open-porous firn are directly analysed using a large array of shallow isotope profiles. By this, we can reject the possibility of post-depositional change beyond diffusion and densification as the cause of the discrepancy between isotope and local temperature variations at Kohnen Station, East Antarctica.
The importance of post-depositional changes for the temperature interpretation of water isotopes...
