About the Authors

Bianca B. Perren

biaper@bas.ac.uk

Affiliation British Antarctic Survey, High Cross, Cambridge, United Kingdom

Yarrow Axford

Affiliation Dept of Earth and Planetary Sciences, Northwestern University, Evanston, Illinois, United States of America

Darrell S. Kaufman

Affiliation School of Earth Sciences & Environmental Sustainability, Northern Arizona University, Flagstaff, Arizona, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: BBP. Data curation: BP YA DK. Formal analysis: BP YA. Funding acquisition: DK. Investigation: BP YA DK. Methodology: BP YA DK. Resources: BP DK. Visualization: BP. Writing – original draft: BP. Writing – review & editing: YA DK.