A new Holocene relative sea level curve for the South Shetland Islands, Antarctica
Precise relative sea level (RSL) data are important for inferring regional ice sheet histories, as well as helping to validate numerical models of ice sheet evolution and glacial isostatic adjustment. Here we develop a new RSL curve for Fildes Peninsula, South Shetland Islands (SSIs), a sub-Antarcti...
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ftnerc:oai:nora.nerc.ac.uk:15786 2023-05-15T13:45:11+02:00 A new Holocene relative sea level curve for the South Shetland Islands, Antarctica Watcham, E.P. Bentley, M.J. Hodgson, D.A. Roberts, Stephen Fretwell, P.T. Lloyd, J.M. Larter, R.D. Whitehouse, P.L. Leng, M.J. Monien, P. Moreton, S.G. 2011 http://nora.nerc.ac.uk/id/eprint/15786/ http://www.sciencedirect.com/science/journal/02773791 unknown Elsevier Watcham, E.P.; Bentley, M.J.; Hodgson, D.A. orcid:0000-0002-3841-3746 Roberts, Stephen orcid:0000-0003-3407-9127 Fretwell, P.T. orcid:0000-0002-1988-5844 Lloyd, J.M.; Larter, R.D. orcid:0000-0002-8414-7389 Whitehouse, P.L.; Leng, M.J. orcid:0000-0003-1115-5166 Monien, P.; Moreton, S.G. 2011 A new Holocene relative sea level curve for the South Shetland Islands, Antarctica. Quaternary Science Reviews, 30 (21-22). 3152-3170. https://doi.org/10.1016/j.quascirev.2011.07.021 <https://doi.org/10.1016/j.quascirev.2011.07.021> Publication - Article PeerReviewed 2011 ftnerc https://doi.org/10.1016/j.quascirev.2011.07.021 2023-02-04T19:30:05Z Precise relative sea level (RSL) data are important for inferring regional ice sheet histories, as well as helping to validate numerical models of ice sheet evolution and glacial isostatic adjustment. Here we develop a new RSL curve for Fildes Peninsula, South Shetland Islands (SSIs), a sub-Antarctic archipelago peripheral to the northern Antarctic Peninsula ice sheet, by integrating sedimentary evidence from isolation basins with geomorphological evidence from raised beaches. This combined approach yields not only a Holocene RSL curve, but also the spatial pattern of how RSL change varied across the archipelago. The curve shows a mid-Holocene RSL highstand on Fildes Peninsula at 15.5 m above mean sea level between 8000 and 7000 cal a BP. Subsequently RSL gradually fell as a consequence of isostatic uplift in response to regional deglaciation. We propose that isostatic uplift occurred at a non-steady rate, with a temporary pause in ice retreat ca. 7200 cal a BP, leading to a short-lived RSL rise of ∼1 m and forming a second peak to the mid-Holocene highstand. Two independent approaches were taken to constrain the long-term tectonic uplift rate of the SSIs at 0.22–0.48 m/ka, placing the tectonic contribution to the reconstructed RSL highstand between 1.4 and 2.9 m. Finally, we make comparisons to predictions from three global sea level models. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet South Shetland Islands Natural Environment Research Council: NERC Open Research Archive Antarctic Antarctic Peninsula Fildes ENVELOPE(-58.817,-58.817,-62.217,-62.217) Fildes peninsula ENVELOPE(-58.948,-58.948,-62.182,-62.182) South Shetland Islands Quaternary Science Reviews 30 21-22 3152 3170 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
Precise relative sea level (RSL) data are important for inferring regional ice sheet histories, as well as helping to validate numerical models of ice sheet evolution and glacial isostatic adjustment. Here we develop a new RSL curve for Fildes Peninsula, South Shetland Islands (SSIs), a sub-Antarctic archipelago peripheral to the northern Antarctic Peninsula ice sheet, by integrating sedimentary evidence from isolation basins with geomorphological evidence from raised beaches. This combined approach yields not only a Holocene RSL curve, but also the spatial pattern of how RSL change varied across the archipelago. The curve shows a mid-Holocene RSL highstand on Fildes Peninsula at 15.5 m above mean sea level between 8000 and 7000 cal a BP. Subsequently RSL gradually fell as a consequence of isostatic uplift in response to regional deglaciation. We propose that isostatic uplift occurred at a non-steady rate, with a temporary pause in ice retreat ca. 7200 cal a BP, leading to a short-lived RSL rise of ∼1 m and forming a second peak to the mid-Holocene highstand. Two independent approaches were taken to constrain the long-term tectonic uplift rate of the SSIs at 0.22–0.48 m/ka, placing the tectonic contribution to the reconstructed RSL highstand between 1.4 and 2.9 m. Finally, we make comparisons to predictions from three global sea level models. |
format |
Article in Journal/Newspaper |
author |
Watcham, E.P. Bentley, M.J. Hodgson, D.A. Roberts, Stephen Fretwell, P.T. Lloyd, J.M. Larter, R.D. Whitehouse, P.L. Leng, M.J. Monien, P. Moreton, S.G. |
spellingShingle |
Watcham, E.P. Bentley, M.J. Hodgson, D.A. Roberts, Stephen Fretwell, P.T. Lloyd, J.M. Larter, R.D. Whitehouse, P.L. Leng, M.J. Monien, P. Moreton, S.G. A new Holocene relative sea level curve for the South Shetland Islands, Antarctica |
author_facet |
Watcham, E.P. Bentley, M.J. Hodgson, D.A. Roberts, Stephen Fretwell, P.T. Lloyd, J.M. Larter, R.D. Whitehouse, P.L. Leng, M.J. Monien, P. Moreton, S.G. |
author_sort |
Watcham, E.P. |
title |
A new Holocene relative sea level curve for the South Shetland Islands, Antarctica |
title_short |
A new Holocene relative sea level curve for the South Shetland Islands, Antarctica |
title_full |
A new Holocene relative sea level curve for the South Shetland Islands, Antarctica |
title_fullStr |
A new Holocene relative sea level curve for the South Shetland Islands, Antarctica |
title_full_unstemmed |
A new Holocene relative sea level curve for the South Shetland Islands, Antarctica |
title_sort |
new holocene relative sea level curve for the south shetland islands, antarctica |
publisher |
Elsevier |
publishDate |
2011 |
url |
http://nora.nerc.ac.uk/id/eprint/15786/ http://www.sciencedirect.com/science/journal/02773791 |
long_lat |
ENVELOPE(-58.817,-58.817,-62.217,-62.217) ENVELOPE(-58.948,-58.948,-62.182,-62.182) |
geographic |
Antarctic Antarctic Peninsula Fildes Fildes peninsula South Shetland Islands |
geographic_facet |
Antarctic Antarctic Peninsula Fildes Fildes peninsula South Shetland Islands |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet South Shetland Islands |
op_relation |
Watcham, E.P.; Bentley, M.J.; Hodgson, D.A. orcid:0000-0002-3841-3746 Roberts, Stephen orcid:0000-0003-3407-9127 Fretwell, P.T. orcid:0000-0002-1988-5844 Lloyd, J.M.; Larter, R.D. orcid:0000-0002-8414-7389 Whitehouse, P.L.; Leng, M.J. orcid:0000-0003-1115-5166 Monien, P.; Moreton, S.G. 2011 A new Holocene relative sea level curve for the South Shetland Islands, Antarctica. Quaternary Science Reviews, 30 (21-22). 3152-3170. https://doi.org/10.1016/j.quascirev.2011.07.021 <https://doi.org/10.1016/j.quascirev.2011.07.021> |
op_doi |
https://doi.org/10.1016/j.quascirev.2011.07.021 |
container_title |
Quaternary Science Reviews |
container_volume |
30 |
container_issue |
21-22 |
container_start_page |
3152 |
op_container_end_page |
3170 |
_version_ |
1766215964868739072 |