EGU24-14335, updated on 09 Mar 2024
https://doi.org/10.5194/egusphere-egu24-14335
EGU General Assembly 2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Early-Mid Pleistocene ice core records of Antarctic and global cooling 

Sarah Shackleton and the Allan Hills Blue Ice Coring Team*
Sarah Shackleton and the Allan Hills Blue Ice Coring Team
  • Princeton University, Geosciences, United States of America (ss77@princeton.edu)
  • *A full list of authors appears at the end of the abstract

Here we present water isotope and noble gas data from the Allan Hills, Antarctica, which provide insight into the local and global climate extending through the Mid Pleistocene Transition and beyond. The Allan Hills blue ice archive provides snapshots of climate that extend well beyond continuous ice core records, but their interpretation has challenges, including complex stratigraphy, potential preservation bias, and highly thinned records.  The water isotope and noble gas data (which come from the same ice samples) suggest a statistically significant correlation between Antarctic temperature and mean ocean temperature, consistent with previous studies. However, we observe subtle differences between these climate reconstructions, including within the mid-Pleistocene transition. We discuss these datasets in the context of broader global changes, and the nuances of the Allan Hills archives.

Allan Hills Blue Ice Coring Team:

Sarah Shackleton, John Higgins, Michael Bender, Valens Hishamunda, Yuzhen Yan, Ed Brook, Christo Buizert, Julia Marks Peterson, Jenna Epifanio, Jeff Severinghaus, Jacob Morgan, Sarah Aarons, Austin Carter, Andrei Kurbatov, Douglas Introne, Eric Steig, Lindsey Davidge

How to cite: Shackleton, S. and the Allan Hills Blue Ice Coring Team: Early-Mid Pleistocene ice core records of Antarctic and global cooling , EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-14335, https://doi.org/10.5194/egusphere-egu24-14335, 2024.