About the Authors

Vsevolod Afanasyev

hjpe@bas.ac.uk

Affiliation British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB30ET, United Kingdom

Sergey V. Buldyrev

Affiliation Department of Physics, Yeshiva University, 500 W 185th Street, New York, NY, 10033, United States of America

Michael J. Dunn

Affiliation British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB30ET, United Kingdom

Jeremy Robst

Affiliation British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB30ET, United Kingdom

Mark Preston

Affiliation British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB30ET, United Kingdom

Steve F. Bremner

Affiliation British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB30ET, United Kingdom

Dirk R. Briggs

Affiliation British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB30ET, United Kingdom

Ruth Brown

Affiliation British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB30ET, United Kingdom

Stacey Adlard

Affiliation British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB30ET, United Kingdom

Helen J. Peat

Affiliation British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge, CB30ET, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: VA SVB MP. Performed the experiments: VA SA RB MJD MP. Analyzed the data: VA HJP JR MJD SA RB DRB SVB. Contributed reagents/materials/analysis tools: VA SVB HJP MJD JR MP DRB SFB. Wrote the paper: VA MJD SVB HJP MP JR.