Oceanographic changes through the last millennium off North Iceland: temperature and salinity reconstructions based on foraminifera and stable isotopes
Temperature and salinity reconstructions for two 1000-year high-resolution sedimentary records, located at the boundary between Atlantic and Arctic surface waters on the North Icelandic shelf, are based on transfer functions and oxygen isotopes for planktonic and benthic foraminifera. There is a gen...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.900268 2023-05-15T15:00:04+02:00 Oceanographic changes through the last millennium off North Iceland: temperature and salinity reconstructions based on foraminifera and stable isotopes Knudsen, Karen Luise Eiriksson, Jón Bartels-Jonsdottir, Helga B MEDIAN LATITUDE: 66.636208 * MEDIAN LONGITUDE: -18.120000 * SOUTH-BOUND LATITUDE: 66.551667 * WEST-BOUND LONGITUDE: -18.750333 * NORTH-BOUND LATITUDE: 66.763170 * EAST-BOUND LONGITUDE: -17.699833 * DATE/TIME START: 1999-08-01T00:00:00 * DATE/TIME END: 1999-08-01T00:00:00 2019-04-09 application/zip, 10 datasets https://doi.pangaea.de/10.1594/PANGAEA.900268 https://doi.org/10.1594/PANGAEA.900268 en eng PANGAEA Cunningham, Laura Kay; Austin, William EN; Knudsen, Karen Luise; Eiriksson, Jón; Scourse, James D; Wanamaker, Alan D; Butler, Paul G; Cage, Alix G; Richter, Thomas; Husum, Katrine; Hald, Morten; Andersson, Carin; Zorita, Eduardo; Linderholm, Hans W; Gunnarson, Björn E; Sicre, Marie-Alexandrine; Sejrup, Hans Petter; Jiang, Hui; Wilson, Rob J S (2013): Reconstructions of surface ocean conditions from the northeast Atlantic and Nordic seas during the last millennium. The Holocene, 23(7), 921-935, https://doi.org/10.1177/0959683613479677 https://doi.pangaea.de/10.1594/PANGAEA.900268 https://doi.org/10.1594/PANGAEA.900268 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Knudsen, Karen Luise; Eiriksson, Jón; Bartels-Jonsdottir, Helga B (2012): Oceanographic changes through the last millennium off North Iceland: Temperature and salinity reconstructions based on foraminifera and stable isotopes. Marine Micropaleontology, 84-85, 54-73, https://doi.org/10.1016/j.marmicro.2011.11.002 Benthic and planktonic foraminifera Last millennium North Icelandic shelf Stable isotopes Dataset 2019 ftpangaea https://doi.org/10.1594/PANGAEA.900268 https://doi.org/10.1016/j.marmicro.2011.11.002 https://doi.org/10.1177/0959683613479677 2023-01-20T07:34:19Z Temperature and salinity reconstructions for two 1000-year high-resolution sedimentary records, located at the boundary between Atlantic and Arctic surface waters on the North Icelandic shelf, are based on transfer functions and oxygen isotopes for planktonic and benthic foraminifera. There is a general increase of Arctic Water indicator species at the transition from the Medieval Warm Period into the Little Ice Age (LIA) and a subsequent return of Atlantic Water indicator species towards the end of the LIA and in the 20th century. The timing of the reconstructed temperature changes, both at the beginning and at the end of the LIA, appears to be slightly different for the different water masses. The earliest temperature change is seen in the bottom and subsurface waters, where a cooling is reconstructed as early as AD 1150-1200 at both locations, whereas previously published diatom-based and alkenone-based sea-surface temperature reconstructions show a change at AD 1300, coinciding with the air temperature shift in the area. Our results show the need of a thorough understanding of the oceanography in the study area, as well as the different living habitat for the biological proxies used for the temperature estimates. Dataset Arctic Foraminifera* Iceland Planktonic foraminifera PANGAEA - Data Publisher for Earth & Environmental Science Arctic ENVELOPE(-18.750333,-17.699833,66.763170,66.551667) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Benthic and planktonic foraminifera Last millennium North Icelandic shelf Stable isotopes |
spellingShingle |
Benthic and planktonic foraminifera Last millennium North Icelandic shelf Stable isotopes Knudsen, Karen Luise Eiriksson, Jón Bartels-Jonsdottir, Helga B Oceanographic changes through the last millennium off North Iceland: temperature and salinity reconstructions based on foraminifera and stable isotopes |
topic_facet |
Benthic and planktonic foraminifera Last millennium North Icelandic shelf Stable isotopes |
description |
Temperature and salinity reconstructions for two 1000-year high-resolution sedimentary records, located at the boundary between Atlantic and Arctic surface waters on the North Icelandic shelf, are based on transfer functions and oxygen isotopes for planktonic and benthic foraminifera. There is a general increase of Arctic Water indicator species at the transition from the Medieval Warm Period into the Little Ice Age (LIA) and a subsequent return of Atlantic Water indicator species towards the end of the LIA and in the 20th century. The timing of the reconstructed temperature changes, both at the beginning and at the end of the LIA, appears to be slightly different for the different water masses. The earliest temperature change is seen in the bottom and subsurface waters, where a cooling is reconstructed as early as AD 1150-1200 at both locations, whereas previously published diatom-based and alkenone-based sea-surface temperature reconstructions show a change at AD 1300, coinciding with the air temperature shift in the area. Our results show the need of a thorough understanding of the oceanography in the study area, as well as the different living habitat for the biological proxies used for the temperature estimates. |
format |
Dataset |
author |
Knudsen, Karen Luise Eiriksson, Jón Bartels-Jonsdottir, Helga B |
author_facet |
Knudsen, Karen Luise Eiriksson, Jón Bartels-Jonsdottir, Helga B |
author_sort |
Knudsen, Karen Luise |
title |
Oceanographic changes through the last millennium off North Iceland: temperature and salinity reconstructions based on foraminifera and stable isotopes |
title_short |
Oceanographic changes through the last millennium off North Iceland: temperature and salinity reconstructions based on foraminifera and stable isotopes |
title_full |
Oceanographic changes through the last millennium off North Iceland: temperature and salinity reconstructions based on foraminifera and stable isotopes |
title_fullStr |
Oceanographic changes through the last millennium off North Iceland: temperature and salinity reconstructions based on foraminifera and stable isotopes |
title_full_unstemmed |
Oceanographic changes through the last millennium off North Iceland: temperature and salinity reconstructions based on foraminifera and stable isotopes |
title_sort |
oceanographic changes through the last millennium off north iceland: temperature and salinity reconstructions based on foraminifera and stable isotopes |
publisher |
PANGAEA |
publishDate |
2019 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.900268 https://doi.org/10.1594/PANGAEA.900268 |
op_coverage |
MEDIAN LATITUDE: 66.636208 * MEDIAN LONGITUDE: -18.120000 * SOUTH-BOUND LATITUDE: 66.551667 * WEST-BOUND LONGITUDE: -18.750333 * NORTH-BOUND LATITUDE: 66.763170 * EAST-BOUND LONGITUDE: -17.699833 * DATE/TIME START: 1999-08-01T00:00:00 * DATE/TIME END: 1999-08-01T00:00:00 |
long_lat |
ENVELOPE(-18.750333,-17.699833,66.763170,66.551667) |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Foraminifera* Iceland Planktonic foraminifera |
genre_facet |
Arctic Foraminifera* Iceland Planktonic foraminifera |
op_source |
Supplement to: Knudsen, Karen Luise; Eiriksson, Jón; Bartels-Jonsdottir, Helga B (2012): Oceanographic changes through the last millennium off North Iceland: Temperature and salinity reconstructions based on foraminifera and stable isotopes. Marine Micropaleontology, 84-85, 54-73, https://doi.org/10.1016/j.marmicro.2011.11.002 |
op_relation |
Cunningham, Laura Kay; Austin, William EN; Knudsen, Karen Luise; Eiriksson, Jón; Scourse, James D; Wanamaker, Alan D; Butler, Paul G; Cage, Alix G; Richter, Thomas; Husum, Katrine; Hald, Morten; Andersson, Carin; Zorita, Eduardo; Linderholm, Hans W; Gunnarson, Björn E; Sicre, Marie-Alexandrine; Sejrup, Hans Petter; Jiang, Hui; Wilson, Rob J S (2013): Reconstructions of surface ocean conditions from the northeast Atlantic and Nordic seas during the last millennium. The Holocene, 23(7), 921-935, https://doi.org/10.1177/0959683613479677 https://doi.pangaea.de/10.1594/PANGAEA.900268 https://doi.org/10.1594/PANGAEA.900268 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.900268 https://doi.org/10.1016/j.marmicro.2011.11.002 https://doi.org/10.1177/0959683613479677 |
_version_ |
1766332173895335936 |