Deep-water renewal in a Scottish fjord: temperature, salinity and oxygen isotopes
The sea lochs (fjords) of north-west Scotland are located in a region of Europe particularly well situated to monitor changes in westerly air streams. The moisture transported in these air streams has a profound effect on regional precipitation, freshwater run-off and, in turn, sea loch circulation....
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Norwegian Polar Institute
2002
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ftjpolarres:oai:journals.openacademia.net:article/2141 2023-05-15T18:02:43+02:00 Deep-water renewal in a Scottish fjord: temperature, salinity and oxygen isotopes Austin, William E. N. Inall, Mark E. 2002-01-12 application/pdf https://polarresearch.net/index.php/polar/article/view/2141 https://doi.org/10.3402/polar.v21i2.6485 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/2141/5392 https://polarresearch.net/index.php/polar/article/view/2141 doi:10.3402/polar.v21i2.6485 Copyright (c) 2018 Polar Research Polar Research; Vol. 21 No. 2 (2002): Special issue: Proceedings of the Changes in Climate and Environment at High Latitudes Conference; 251-257 1751-8369 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2002 ftjpolarres https://doi.org/10.3402/polar.v21i2.6485 2021-11-11T19:12:09Z The sea lochs (fjords) of north-west Scotland are located in a region of Europe particularly well situated to monitor changes in westerly air streams. The moisture transported in these air streams has a profound effect on regional precipitation, freshwater run-off and, in turn, sea loch circulation. The gentle slope of the regional salinity:?18O mixing-line, defined as 0.18 ‰ per salinity unit, suggests that the temperature: ?18O relationship may be readily resolved in these coastal waters. Deep-water renewal events, both observed and predicted from empirical models, in the bottom-waters of Loch Etive provide an opportunity to assess the temperature, salinity and ?18O relationship. Predicted changes in ?18Ocalcite as a function of changing salinity (?S) and changing temperature (?T) during deep-water renewal events suggest that >80% fall above analytical detection limits. The theoretical likelihood of recording such renewal events in the “palaeoclimate” record appears to be promising, but temperature and salinity change during renewal events may have either sign. Scottish fjords, because of the relatively small impact which salinity has on ?18Owater, may provide useful study sites in palaeoclimate research, particularly where palaeotemperature is the primary record of interest. Article in Journal/Newspaper Polar Research Polar Research (E-Journal) Polar Research 21 2 251 257 |
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Open Polar |
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Polar Research (E-Journal) |
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ftjpolarres |
language |
English |
description |
The sea lochs (fjords) of north-west Scotland are located in a region of Europe particularly well situated to monitor changes in westerly air streams. The moisture transported in these air streams has a profound effect on regional precipitation, freshwater run-off and, in turn, sea loch circulation. The gentle slope of the regional salinity:?18O mixing-line, defined as 0.18 ‰ per salinity unit, suggests that the temperature: ?18O relationship may be readily resolved in these coastal waters. Deep-water renewal events, both observed and predicted from empirical models, in the bottom-waters of Loch Etive provide an opportunity to assess the temperature, salinity and ?18O relationship. Predicted changes in ?18Ocalcite as a function of changing salinity (?S) and changing temperature (?T) during deep-water renewal events suggest that >80% fall above analytical detection limits. The theoretical likelihood of recording such renewal events in the “palaeoclimate” record appears to be promising, but temperature and salinity change during renewal events may have either sign. Scottish fjords, because of the relatively small impact which salinity has on ?18Owater, may provide useful study sites in palaeoclimate research, particularly where palaeotemperature is the primary record of interest. |
format |
Article in Journal/Newspaper |
author |
Austin, William E. N. Inall, Mark E. |
spellingShingle |
Austin, William E. N. Inall, Mark E. Deep-water renewal in a Scottish fjord: temperature, salinity and oxygen isotopes |
author_facet |
Austin, William E. N. Inall, Mark E. |
author_sort |
Austin, William E. N. |
title |
Deep-water renewal in a Scottish fjord: temperature, salinity and oxygen isotopes |
title_short |
Deep-water renewal in a Scottish fjord: temperature, salinity and oxygen isotopes |
title_full |
Deep-water renewal in a Scottish fjord: temperature, salinity and oxygen isotopes |
title_fullStr |
Deep-water renewal in a Scottish fjord: temperature, salinity and oxygen isotopes |
title_full_unstemmed |
Deep-water renewal in a Scottish fjord: temperature, salinity and oxygen isotopes |
title_sort |
deep-water renewal in a scottish fjord: temperature, salinity and oxygen isotopes |
publisher |
Norwegian Polar Institute |
publishDate |
2002 |
url |
https://polarresearch.net/index.php/polar/article/view/2141 https://doi.org/10.3402/polar.v21i2.6485 |
genre |
Polar Research |
genre_facet |
Polar Research |
op_source |
Polar Research; Vol. 21 No. 2 (2002): Special issue: Proceedings of the Changes in Climate and Environment at High Latitudes Conference; 251-257 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/2141/5392 https://polarresearch.net/index.php/polar/article/view/2141 doi:10.3402/polar.v21i2.6485 |
op_rights |
Copyright (c) 2018 Polar Research |
op_doi |
https://doi.org/10.3402/polar.v21i2.6485 |
container_title |
Polar Research |
container_volume |
21 |
container_issue |
2 |
container_start_page |
251 |
op_container_end_page |
257 |
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1766173293666107392 |