Epibenthic foraminifera stable isotope and planktic foraminifera Ba/Ca data of sediment core MD03-2664
Deep ocean circulation has been considered relatively stable during interglacial periods, yet little is known about its behavior on submillennial time scales. Using a subcentennially resolved epibenthic foraminiferal d13C record we show that North Atlantic Deep Water (NADW) influence was strong at t...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.830081 2023-05-15T14:30:58+02:00 Epibenthic foraminifera stable isotope and planktic foraminifera Ba/Ca data of sediment core MD03-2664 Galaasen, Eirik Vinje Ninnemann, Ulysses S Irvalı, Nil Kleiven, Helga F Rosenthal, Yair Kissel, Catherine Hodell, David A LATITUDE: 57.439000 * LONGITUDE: -48.605800 * DATE/TIME START: 2003-06-12T04:32:00 * DATE/TIME END: 2003-06-12T04:32:00 2014-02-26 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.830081 https://doi.org/10.1594/PANGAEA.830081 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.830081 https://doi.org/10.1594/PANGAEA.830081 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Bjerknes Centre for Climate Research Supplement to: Galaasen, Eirik Vinje; Ninnemann, Ulysses S; Irvalı, Nil; Kleiven, Helga F; Rosenthal, Yair; Kissel, Catherine; Hodell, David A (2014): Rapid Reductions in North Atlantic Deep Water During the Peak of the Last Interglacial Period. Science, 343(6175), 1129-1132, https://doi.org/10.1126/science.1248667 Dataset 2014 ftpangaea https://doi.org/10.1594/PANGAEA.830081 https://doi.org/10.1126/science.1248667 2023-01-20T07:33:14Z Deep ocean circulation has been considered relatively stable during interglacial periods, yet little is known about its behavior on submillennial time scales. Using a subcentennially resolved epibenthic foraminiferal d13C record we show that North Atlantic Deep Water (NADW) influence was strong at the onset of the last interglacial period and then interrupted by several prominent, centennial-scale reductions. These NADW transients occurred during periods of increased ice rafting and southward expansions of polar water influence, suggesting that a buoyancy threshold for convective instability was triggered by freshwater and circum-Arctic cryosphere changes. The deep Atlantic chemical changes were similar in magnitude to those associated with glaciations, implying that the canonical view of a relatively stable interglacial circulation may not hold for conditions warmer/fresher than at present. Dataset arctic cryosphere Arctic Foraminifera* NADW North Atlantic Deep Water North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Arctic ENVELOPE(-48.605800,-48.605800,57.439000,57.439000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
Deep ocean circulation has been considered relatively stable during interglacial periods, yet little is known about its behavior on submillennial time scales. Using a subcentennially resolved epibenthic foraminiferal d13C record we show that North Atlantic Deep Water (NADW) influence was strong at the onset of the last interglacial period and then interrupted by several prominent, centennial-scale reductions. These NADW transients occurred during periods of increased ice rafting and southward expansions of polar water influence, suggesting that a buoyancy threshold for convective instability was triggered by freshwater and circum-Arctic cryosphere changes. The deep Atlantic chemical changes were similar in magnitude to those associated with glaciations, implying that the canonical view of a relatively stable interglacial circulation may not hold for conditions warmer/fresher than at present. |
format |
Dataset |
author |
Galaasen, Eirik Vinje Ninnemann, Ulysses S Irvalı, Nil Kleiven, Helga F Rosenthal, Yair Kissel, Catherine Hodell, David A |
spellingShingle |
Galaasen, Eirik Vinje Ninnemann, Ulysses S Irvalı, Nil Kleiven, Helga F Rosenthal, Yair Kissel, Catherine Hodell, David A Epibenthic foraminifera stable isotope and planktic foraminifera Ba/Ca data of sediment core MD03-2664 |
author_facet |
Galaasen, Eirik Vinje Ninnemann, Ulysses S Irvalı, Nil Kleiven, Helga F Rosenthal, Yair Kissel, Catherine Hodell, David A |
author_sort |
Galaasen, Eirik Vinje |
title |
Epibenthic foraminifera stable isotope and planktic foraminifera Ba/Ca data of sediment core MD03-2664 |
title_short |
Epibenthic foraminifera stable isotope and planktic foraminifera Ba/Ca data of sediment core MD03-2664 |
title_full |
Epibenthic foraminifera stable isotope and planktic foraminifera Ba/Ca data of sediment core MD03-2664 |
title_fullStr |
Epibenthic foraminifera stable isotope and planktic foraminifera Ba/Ca data of sediment core MD03-2664 |
title_full_unstemmed |
Epibenthic foraminifera stable isotope and planktic foraminifera Ba/Ca data of sediment core MD03-2664 |
title_sort |
epibenthic foraminifera stable isotope and planktic foraminifera ba/ca data of sediment core md03-2664 |
publisher |
PANGAEA |
publishDate |
2014 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.830081 https://doi.org/10.1594/PANGAEA.830081 |
op_coverage |
LATITUDE: 57.439000 * LONGITUDE: -48.605800 * DATE/TIME START: 2003-06-12T04:32:00 * DATE/TIME END: 2003-06-12T04:32:00 |
long_lat |
ENVELOPE(-48.605800,-48.605800,57.439000,57.439000) |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
arctic cryosphere Arctic Foraminifera* NADW North Atlantic Deep Water North Atlantic |
genre_facet |
arctic cryosphere Arctic Foraminifera* NADW North Atlantic Deep Water North Atlantic |
op_source |
Bjerknes Centre for Climate Research Supplement to: Galaasen, Eirik Vinje; Ninnemann, Ulysses S; Irvalı, Nil; Kleiven, Helga F; Rosenthal, Yair; Kissel, Catherine; Hodell, David A (2014): Rapid Reductions in North Atlantic Deep Water During the Peak of the Last Interglacial Period. Science, 343(6175), 1129-1132, https://doi.org/10.1126/science.1248667 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.830081 https://doi.org/10.1594/PANGAEA.830081 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.830081 https://doi.org/10.1126/science.1248667 |
_version_ |
1766304717094256640 |