A diatom-conductivity transfer function for reconstructing past changes in the Southern Hemisphere westerly winds over the Southern Ocean
Sub-Antarctic islands are ideally placed to reconstruct past changes in Southern Hemisphere westerly wind behaviour. They lie within their core belt (50–60°S) and the strong winds deliver sea salt ions to the islands resulting in a west to east conductivity gradient in their water bodies. This means...
Published in: | Journal of Quaternary Science |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Wiley
2015
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/510922/ |
id |
ftnerc:oai:nora.nerc.ac.uk:510922 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:510922 2024-02-11T09:58:05+01:00 A diatom-conductivity transfer function for reconstructing past changes in the Southern Hemisphere westerly winds over the Southern Ocean Saunders, Krystyna M. Hodgson, Dominic A. McMurtrie, Shelley Grosjean, Martin 2015-07-16 http://nora.nerc.ac.uk/id/eprint/510922/ unknown Wiley Saunders, Krystyna M.; Hodgson, Dominic A. orcid:0000-0002-3841-3746 McMurtrie, Shelley; Grosjean, Martin. 2015 A diatom-conductivity transfer function for reconstructing past changes in the Southern Hemisphere westerly winds over the Southern Ocean. Journal of Quaternary Science, 30 (5). 464-477. https://doi.org/10.1002/jqs.2788 <https://doi.org/10.1002/jqs.2788> Publication - Article PeerReviewed 2015 ftnerc https://doi.org/10.1002/jqs.2788 2024-01-12T00:03:13Z Sub-Antarctic islands are ideally placed to reconstruct past changes in Southern Hemisphere westerly wind behaviour. They lie within their core belt (50–60°S) and the strong winds deliver sea salt ions to the islands resulting in a west to east conductivity gradient in their water bodies. This means that the stronger (or weaker) the winds, the higher (or lower) the conductivity values measured in the water bodies. A survey of the water chemistry and diatom assemblages of lakes and ponds on sub-Antarctic Campbell Island (52°32′S, 169°8′E) revealed that, similar to other sub-Antarctic islands, conductivity was the most important, statistically significant ecological variable explaining turnover in diatom community structure. Based on this, a diatom–conductivity transfer function was developed (simple weighted averaging with inverse deshrinking: R2 = 0.86, R2jack = 0.66, RMSEP = 0.25 log10 μS cm−1). This transfer function will be applied to lake sediment cores from the western edge of the Campbell Island plateau to reconstruct past conductivity/sea spray and therefore directly reconstruct changes in Southern Hemisphere westerly wind strength within their core belt. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Campbell Island ENVELOPE(169.500,169.500,-52.500,-52.500) Southern Ocean Journal of Quaternary Science 30 5 464 477 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
Sub-Antarctic islands are ideally placed to reconstruct past changes in Southern Hemisphere westerly wind behaviour. They lie within their core belt (50–60°S) and the strong winds deliver sea salt ions to the islands resulting in a west to east conductivity gradient in their water bodies. This means that the stronger (or weaker) the winds, the higher (or lower) the conductivity values measured in the water bodies. A survey of the water chemistry and diatom assemblages of lakes and ponds on sub-Antarctic Campbell Island (52°32′S, 169°8′E) revealed that, similar to other sub-Antarctic islands, conductivity was the most important, statistically significant ecological variable explaining turnover in diatom community structure. Based on this, a diatom–conductivity transfer function was developed (simple weighted averaging with inverse deshrinking: R2 = 0.86, R2jack = 0.66, RMSEP = 0.25 log10 μS cm−1). This transfer function will be applied to lake sediment cores from the western edge of the Campbell Island plateau to reconstruct past conductivity/sea spray and therefore directly reconstruct changes in Southern Hemisphere westerly wind strength within their core belt. |
format |
Article in Journal/Newspaper |
author |
Saunders, Krystyna M. Hodgson, Dominic A. McMurtrie, Shelley Grosjean, Martin |
spellingShingle |
Saunders, Krystyna M. Hodgson, Dominic A. McMurtrie, Shelley Grosjean, Martin A diatom-conductivity transfer function for reconstructing past changes in the Southern Hemisphere westerly winds over the Southern Ocean |
author_facet |
Saunders, Krystyna M. Hodgson, Dominic A. McMurtrie, Shelley Grosjean, Martin |
author_sort |
Saunders, Krystyna M. |
title |
A diatom-conductivity transfer function for reconstructing past changes in the Southern Hemisphere westerly winds over the Southern Ocean |
title_short |
A diatom-conductivity transfer function for reconstructing past changes in the Southern Hemisphere westerly winds over the Southern Ocean |
title_full |
A diatom-conductivity transfer function for reconstructing past changes in the Southern Hemisphere westerly winds over the Southern Ocean |
title_fullStr |
A diatom-conductivity transfer function for reconstructing past changes in the Southern Hemisphere westerly winds over the Southern Ocean |
title_full_unstemmed |
A diatom-conductivity transfer function for reconstructing past changes in the Southern Hemisphere westerly winds over the Southern Ocean |
title_sort |
diatom-conductivity transfer function for reconstructing past changes in the southern hemisphere westerly winds over the southern ocean |
publisher |
Wiley |
publishDate |
2015 |
url |
http://nora.nerc.ac.uk/id/eprint/510922/ |
long_lat |
ENVELOPE(169.500,169.500,-52.500,-52.500) |
geographic |
Antarctic Campbell Island Southern Ocean |
geographic_facet |
Antarctic Campbell Island Southern Ocean |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
Saunders, Krystyna M.; Hodgson, Dominic A. orcid:0000-0002-3841-3746 McMurtrie, Shelley; Grosjean, Martin. 2015 A diatom-conductivity transfer function for reconstructing past changes in the Southern Hemisphere westerly winds over the Southern Ocean. Journal of Quaternary Science, 30 (5). 464-477. https://doi.org/10.1002/jqs.2788 <https://doi.org/10.1002/jqs.2788> |
op_doi |
https://doi.org/10.1002/jqs.2788 |
container_title |
Journal of Quaternary Science |
container_volume |
30 |
container_issue |
5 |
container_start_page |
464 |
op_container_end_page |
477 |
_version_ |
1790593654381871104 |