Articles | Volume 18, issue 4
https://doi.org/10.5194/tc-18-2177-2024
https://doi.org/10.5194/tc-18-2177-2024
Research article
 | 
02 May 2024
Research article |  | 02 May 2024

Impact of subsurface crevassing on the depth–age relationship of high-Alpine ice cores extracted at Col du Dôme between 1994 and 2012

Susanne Preunkert, Pascal Bohleber, Michel Legrand, Adrien Gilbert, Tobias Erhardt, Roland Purtschert, Lars Zipf, Astrid Waldner, Joseph R. McConnell, and Hubertus Fischer

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Cited articles

Arienzo, M. M., McConnell, J. R., Chellman, N., Criscitiello, A., Curran, M., Fritzsche, D., Kipfstuhl, S., Mulvaney, R., Nolan, M. Opel, T., Sigl, M., and Steffensen, J. P.: A method for continuous 239Pu determinations in Arctic & Antarctic ice cores, Environ. Sci. Technol., 7066–7073, https://doi.org/10.1021/acs.est.6b01108, 2016. 
Arienzo, M. M., Legrand, M., Preunkert, S., Stohl, A., Chellman, N., Eckhardt, S., Gleason, K. E., and McConnell, J. R.: Alpine ice-core evidence of a large increase in vanadium and molybdenum pollution in Western Europe during the 20th century. J. Geophys. Res.-Atmos., 126, e2020JD033211, https://doi.org/10.1029/2020JD033211, 2021. 
Birner, B., Buizert, C., Wagner, T. J. W., and Severinghaus, J. P.: The influence of layering and barometric pumping on firn air transport in a 2-D model, The Cryosphere, 12, 2021–2037, https://doi.org/10.5194/tc-12-2021-2018, 2018. 
Bohleber, P.: Alpine Ice Cores as Climate and Environmental Archives, Climate Science, https://doi.org/10.1093/acrefore/9780190228620.013.743, 2019. 
Colgan, W., Rajaram, H., Abdalati, W., McCutchan, C., Mottram, R., Moussavi, M., and Grigsby, S.: Glacier Crevasses: Observations, Models and Mass Balance Implications, Rev. Geophys., 54, 119–161, https://doi.org/10.1002/2015RG000504, 2016. 
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Short summary
Ice cores from high-elevation Alpine glaciers are an important tool to reconstruct the past atmosphere. However, since crevasses are common at these glacier sites, rigorous investigations of glaciological conditions upstream of drill sites are needed before interpreting such ice cores. On the basis of three ice cores extracted at Col du Dôme (4250 m a.s.l; French Alps), an overall picture of a dynamic crevasse formation is drawn, which disturbs the depth–age relation of two of the three cores.