Glacial discharge along the west Antarctic Peninsula during the Holocene (Letter)
The causes for rising temperatures along the Antarctic Peninsula during the late Holocene have been debated, particularly in light of instrumental records of warming over the past decades1. Suggested mechanisms range from upwelling of warm deep waters onto the continental shelf in response to variat...
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Online Access: | https://orca.cardiff.ac.uk/id/eprint/44458/ https://doi.org/10.1038/NGEO1703 |
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:44458 2023-05-15T13:38:47+02:00 Glacial discharge along the west Antarctic Peninsula during the Holocene (Letter) Pike, Jennifer Swann, George E. A. Leng, Melanie J. Snelling, Andrea M. 2013-03 https://orca.cardiff.ac.uk/id/eprint/44458/ https://doi.org/10.1038/NGEO1703 unknown Nature Publishing Group Pike, Jennifer https://orca.cardiff.ac.uk/view/cardiffauthors/A0179070.html orcid:0000-0001-9415-6003 orcid:0000-0001-9415-6003, Swann, George E. A., Leng, Melanie J. and Snelling, Andrea M. 2013. Glacial discharge along the west Antarctic Peninsula during the Holocene (Letter). Nature Geoscience 6 (3) , pp. 199-202. 10.1038/ngeo1703 https://doi.org/10.1038/ngeo1703 doi:10.1038/ngeo1703 QE Geology Article PeerReviewed 2013 ftunivcardiff https://doi.org/10.1038/NGEO1703 https://doi.org/10.1038/ngeo1703 2022-10-27T22:34:57Z The causes for rising temperatures along the Antarctic Peninsula during the late Holocene have been debated, particularly in light of instrumental records of warming over the past decades1. Suggested mechanisms range from upwelling of warm deep waters onto the continental shelf in response to variations in the westerly winds2, to an influence of El Niño–Southern Oscillation on sea surface temperatures3. Here, we present a record of Holocene glacial ice discharge, derived from the oxygen isotope composition of marine diatoms from Palmer Deep along the west Antarctic Peninsula continental margin. We assess atmospheric versus oceanic influences on glacial discharge at this location, using analyses of diatom geochemistry to reconstruct atmospherically forced glacial ice discharge and diatom assemblage4 ecology to investigate the oceanic environment. We show that two processes of atmospheric forcing—an increasing occurrence of La Niña events5 and rising levels of summer insolation—had a stronger influence during the late Holocene than oceanic processes driven by southern westerly winds and upwelling of upper Circumpolar Deepwater. Given that the evolution of El Niño–Southern Oscillation under global warming is uncertain6, its future impacts on the climatically sensitive system of the Antarctic Peninsula Ice Sheet remain to be established. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Ice Sheet Cardiff University: ORCA (Online Research @ Cardiff) Antarctic The Antarctic Antarctic Peninsula Palmer Deep ENVELOPE(-64.400,-64.400,-64.950,-64.950) Nature Geoscience 6 3 199 202 |
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Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
unknown |
topic |
QE Geology |
spellingShingle |
QE Geology Pike, Jennifer Swann, George E. A. Leng, Melanie J. Snelling, Andrea M. Glacial discharge along the west Antarctic Peninsula during the Holocene (Letter) |
topic_facet |
QE Geology |
description |
The causes for rising temperatures along the Antarctic Peninsula during the late Holocene have been debated, particularly in light of instrumental records of warming over the past decades1. Suggested mechanisms range from upwelling of warm deep waters onto the continental shelf in response to variations in the westerly winds2, to an influence of El Niño–Southern Oscillation on sea surface temperatures3. Here, we present a record of Holocene glacial ice discharge, derived from the oxygen isotope composition of marine diatoms from Palmer Deep along the west Antarctic Peninsula continental margin. We assess atmospheric versus oceanic influences on glacial discharge at this location, using analyses of diatom geochemistry to reconstruct atmospherically forced glacial ice discharge and diatom assemblage4 ecology to investigate the oceanic environment. We show that two processes of atmospheric forcing—an increasing occurrence of La Niña events5 and rising levels of summer insolation—had a stronger influence during the late Holocene than oceanic processes driven by southern westerly winds and upwelling of upper Circumpolar Deepwater. Given that the evolution of El Niño–Southern Oscillation under global warming is uncertain6, its future impacts on the climatically sensitive system of the Antarctic Peninsula Ice Sheet remain to be established. |
format |
Article in Journal/Newspaper |
author |
Pike, Jennifer Swann, George E. A. Leng, Melanie J. Snelling, Andrea M. |
author_facet |
Pike, Jennifer Swann, George E. A. Leng, Melanie J. Snelling, Andrea M. |
author_sort |
Pike, Jennifer |
title |
Glacial discharge along the west Antarctic Peninsula during the Holocene (Letter) |
title_short |
Glacial discharge along the west Antarctic Peninsula during the Holocene (Letter) |
title_full |
Glacial discharge along the west Antarctic Peninsula during the Holocene (Letter) |
title_fullStr |
Glacial discharge along the west Antarctic Peninsula during the Holocene (Letter) |
title_full_unstemmed |
Glacial discharge along the west Antarctic Peninsula during the Holocene (Letter) |
title_sort |
glacial discharge along the west antarctic peninsula during the holocene (letter) |
publisher |
Nature Publishing Group |
publishDate |
2013 |
url |
https://orca.cardiff.ac.uk/id/eprint/44458/ https://doi.org/10.1038/NGEO1703 |
long_lat |
ENVELOPE(-64.400,-64.400,-64.950,-64.950) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Palmer Deep |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Palmer Deep |
genre |
Antarc* Antarctic Antarctic Peninsula Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ice Sheet |
op_relation |
Pike, Jennifer https://orca.cardiff.ac.uk/view/cardiffauthors/A0179070.html orcid:0000-0001-9415-6003 orcid:0000-0001-9415-6003, Swann, George E. A., Leng, Melanie J. and Snelling, Andrea M. 2013. Glacial discharge along the west Antarctic Peninsula during the Holocene (Letter). Nature Geoscience 6 (3) , pp. 199-202. 10.1038/ngeo1703 https://doi.org/10.1038/ngeo1703 doi:10.1038/ngeo1703 |
op_doi |
https://doi.org/10.1038/NGEO1703 https://doi.org/10.1038/ngeo1703 |
container_title |
Nature Geoscience |
container_volume |
6 |
container_issue |
3 |
container_start_page |
199 |
op_container_end_page |
202 |
_version_ |
1766111051150000128 |