Ice-stream initiation, duration and thinning on James Ross Island, northern Antarctic Peninsula
Predicting the future response of the Antarctic Ice Sheet to climate change requires an understanding of the ice streams that dominate its dynamics. Here we use cosmogenic isotope exposure-age dating (26Al, 10Be and 36Cl) of erratic boulders on ice-free land on James Ross Island, north-eastern Antar...
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ftuglasgow:oai:eprints.gla.ac.uk:129985 2023-05-15T14:04:48+02:00 Ice-stream initiation, duration and thinning on James Ross Island, northern Antarctic Peninsula Glasser, N.F. Davies, B.J. Carrivick, J.L. Rodés, A. Hambrey, M.J. Smellie, J.L. Domack, E. 2014-02-15 http://eprints.gla.ac.uk/129985/ unknown Elsevier Glasser, N.F., Davies, B.J., Carrivick, J.L., Rodés, A. <http://eprints.gla.ac.uk/view/author/15683.html> , Hambrey, M.J., Smellie, J.L. and Domack, E. (2014) Ice-stream initiation, duration and thinning on James Ross Island, northern Antarctic Peninsula. Quaternary Science Reviews <http://eprints.gla.ac.uk/view/journal_volume/Quaternary_Science_Reviews.html>, 86, 78 - 88. (doi:10.1016/j.quascirev.2013.11.012 <http://dx.doi.org/10.1016/j.quascirev.2013.11.012>) Articles PeerReviewed 2014 ftuglasgow https://doi.org/10.1016/j.quascirev.2013.11.012 2020-01-10T01:13:47Z Predicting the future response of the Antarctic Ice Sheet to climate change requires an understanding of the ice streams that dominate its dynamics. Here we use cosmogenic isotope exposure-age dating (26Al, 10Be and 36Cl) of erratic boulders on ice-free land on James Ross Island, north-eastern Antarctic Peninsula, to define the evolution of Last Glacial Maximum (LGM) ice in the adjacent Prince Gustav Channel. These data include ice-sheet extent, thickness and dynamical behaviour. Prior to ∼18 ka, the LGM Antarctic Peninsula Ice Sheet extended to the continental shelf-edge and transported erratic boulders onto high-elevation mesas on James Ross Island. After ∼18 ka there was a period of rapid ice-sheet surface-lowering, coincident with the initiation of the Prince Gustav Ice Stream. This timing coincided with rapid increases in atmospheric temperature and eustatic sea-level rise around the Antarctic Peninsula. Collectively, these data provide evidence for a transition from a thick, cold-based LGM Antarctic Peninsula Ice Sheet to a thinner, partially warm-based ice sheet during deglaciation. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Ice Sheet James Ross Island Ross Island University of Glasgow: Enlighten - Publications Antarctic Antarctic Peninsula Prince Gustav Channel ENVELOPE(-58.250,-58.250,-63.833,-63.833) Ross Island The Antarctic Quaternary Science Reviews 86 78 88 |
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Open Polar |
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University of Glasgow: Enlighten - Publications |
op_collection_id |
ftuglasgow |
language |
unknown |
description |
Predicting the future response of the Antarctic Ice Sheet to climate change requires an understanding of the ice streams that dominate its dynamics. Here we use cosmogenic isotope exposure-age dating (26Al, 10Be and 36Cl) of erratic boulders on ice-free land on James Ross Island, north-eastern Antarctic Peninsula, to define the evolution of Last Glacial Maximum (LGM) ice in the adjacent Prince Gustav Channel. These data include ice-sheet extent, thickness and dynamical behaviour. Prior to ∼18 ka, the LGM Antarctic Peninsula Ice Sheet extended to the continental shelf-edge and transported erratic boulders onto high-elevation mesas on James Ross Island. After ∼18 ka there was a period of rapid ice-sheet surface-lowering, coincident with the initiation of the Prince Gustav Ice Stream. This timing coincided with rapid increases in atmospheric temperature and eustatic sea-level rise around the Antarctic Peninsula. Collectively, these data provide evidence for a transition from a thick, cold-based LGM Antarctic Peninsula Ice Sheet to a thinner, partially warm-based ice sheet during deglaciation. |
format |
Article in Journal/Newspaper |
author |
Glasser, N.F. Davies, B.J. Carrivick, J.L. Rodés, A. Hambrey, M.J. Smellie, J.L. Domack, E. |
spellingShingle |
Glasser, N.F. Davies, B.J. Carrivick, J.L. Rodés, A. Hambrey, M.J. Smellie, J.L. Domack, E. Ice-stream initiation, duration and thinning on James Ross Island, northern Antarctic Peninsula |
author_facet |
Glasser, N.F. Davies, B.J. Carrivick, J.L. Rodés, A. Hambrey, M.J. Smellie, J.L. Domack, E. |
author_sort |
Glasser, N.F. |
title |
Ice-stream initiation, duration and thinning on James Ross Island, northern Antarctic Peninsula |
title_short |
Ice-stream initiation, duration and thinning on James Ross Island, northern Antarctic Peninsula |
title_full |
Ice-stream initiation, duration and thinning on James Ross Island, northern Antarctic Peninsula |
title_fullStr |
Ice-stream initiation, duration and thinning on James Ross Island, northern Antarctic Peninsula |
title_full_unstemmed |
Ice-stream initiation, duration and thinning on James Ross Island, northern Antarctic Peninsula |
title_sort |
ice-stream initiation, duration and thinning on james ross island, northern antarctic peninsula |
publisher |
Elsevier |
publishDate |
2014 |
url |
http://eprints.gla.ac.uk/129985/ |
long_lat |
ENVELOPE(-58.250,-58.250,-63.833,-63.833) |
geographic |
Antarctic Antarctic Peninsula Prince Gustav Channel Ross Island The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Prince Gustav Channel Ross Island The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Ice Sheet James Ross Island Ross Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ice Sheet James Ross Island Ross Island |
op_relation |
Glasser, N.F., Davies, B.J., Carrivick, J.L., Rodés, A. <http://eprints.gla.ac.uk/view/author/15683.html> , Hambrey, M.J., Smellie, J.L. and Domack, E. (2014) Ice-stream initiation, duration and thinning on James Ross Island, northern Antarctic Peninsula. Quaternary Science Reviews <http://eprints.gla.ac.uk/view/journal_volume/Quaternary_Science_Reviews.html>, 86, 78 - 88. (doi:10.1016/j.quascirev.2013.11.012 <http://dx.doi.org/10.1016/j.quascirev.2013.11.012>) |
op_doi |
https://doi.org/10.1016/j.quascirev.2013.11.012 |
container_title |
Quaternary Science Reviews |
container_volume |
86 |
container_start_page |
78 |
op_container_end_page |
88 |
_version_ |
1766276136015233024 |