Articles | Volume 17, issue 3
https://doi.org/10.5194/tc-17-1247-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-17-1247-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Mar 2023
Research article |
| 15 Mar 2023
| 15 Mar 2023
Holocene history of the 79° N ice shelf reconstructed from epishelf lake and uplifted glaciomarine sediments
British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
Louise Callard
School of Geography, Politics and Sociology, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
Michael J. Bentley
Department of Geography, Durham University, Durham, DH1 3LE, UK
Stewart S. R. Jamieson
Department of Geography, Durham University, Durham, DH1 3LE, UK
Maria Luisa Sánchez-Montes
INSTAAR – Institute of Arctic and Alpine Research, University of Colorado Boulder, Boulder, CO 80309-0450, USA
Timothy P. Lane
School of Biological and Environmental Sciences, Liverpool John Moores University, Liverpool, L3 3AF, UK
Jeremy M. Lloyd
Department of Geography, Durham University, Durham, DH1 3LE, UK
Erin L. McClymont
Department of Geography, Durham University, Durham, DH1 3LE, UK
Christopher M. Darvill
Department of Geography, University of Manchester, Manchester, M13 9PL, UK
Brice R. Rea
School of Geosciences, University of Aberdeen, Aberdeen, AB24 3TU, UK
Colm O'Cofaigh
Department of Geography, Durham University, Durham, DH1 3LE, UK
Pauline Gulliver
NERC Radiocarbon Facility, East Kilbride, G75 0QF, UK
Werner Ehrmann
Institute for Geophysics and Geology, University of Leipzig, Leipzig 04103, Germany
Richard S. Jones
School of Earth Atmosphere and Environment, Monash University, Clayton, Victoria, Australia
David H. Roberts
Department of Geography, Durham University, Durham, DH1 3LE, UK
Data sets
Chronological sedimentological data (radiocarbon 14C) for cores LC7 and LC12 sediment record from Blaso, a large, epishelf lake in NW Greenland collected July-August 2017 (Version 1.0) J. Smith, L. Callard, M. Sanchez Montes, E. McClymont, J. Lloyd, W. Ehrmann, D. Roberts, M. Bentley, S. Jamieson, T. Lane, and C. Darvill https://doi.org/10.5285/e44bbc45-9924-401b-a7b8-7939fbb61db2
Short summary
The Greenland Ice Sheet is melting at an accelerating rate. To understand the significance of these changes we reconstruct the history of one of its fringing ice shelves, known as 79° N ice shelf. We show that the ice shelf disappeared 8500 years ago, following a period of enhanced warming. An important implication of our study is that 79° N ice shelf is susceptible to collapse when atmospheric and ocean temperatures are ~2°C warmer than present, which could occur by the middle of this century.
The Greenland Ice Sheet is melting at an accelerating rate. To understand the significance of...
