Sea surface temperature reconstruction for sediment core KNO5103-0029GGC, supplement to: Sikes, Elisabeth L; Keigwin, Lloyd D (1996): A reexamination of northeast Atlantic sea surface temperature and salinity over the last 16 kyr. Paleoceanography, 11(3), 327-342
We present a 15 kyr sea surface temperature (SST) record for a high sedimentation rate core (KNR51-29GGC) from the Feni Drift off of Ireland, based on an organic geochemical technique for paleotemperature estimation, U37 K'. We compare the U37 K' temperature record to planktonic foraminife...
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ftdatacite:10.1594/pangaea.730038 2023-05-15T17:14:59+02:00 Sea surface temperature reconstruction for sediment core KNO5103-0029GGC, supplement to: Sikes, Elisabeth L; Keigwin, Lloyd D (1996): A reexamination of northeast Atlantic sea surface temperature and salinity over the last 16 kyr. Paleoceanography, 11(3), 327-342 Sikes, Elisabeth L Keigwin, Lloyd D 1996 application/zip https://dx.doi.org/10.1594/pangaea.730038 https://doi.pangaea.de/10.1594/PANGAEA.730038 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1029/95pa03697 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY article Supplementary Collection of Datasets Collection 1996 ftdatacite https://doi.org/10.1594/pangaea.730038 https://doi.org/10.1029/95pa03697 2022-02-09T13:30:04Z We present a 15 kyr sea surface temperature (SST) record for a high sedimentation rate core (KNR51-29GGC) from the Feni Drift off of Ireland, based on an organic geochemical technique for paleotemperature estimation, U37 K'. We compare the U37 K' temperature record to planktonic foraminiferal delta18O and foraminiferal assemblage SST estimates from the same sample horizons. U37 K' gives SST estimates of 13°C for the early deglacial and 18°C for the Holocene and Recent, whereas assemblages give estimates of 9°C and 13°C, respectively. As in nearby core V23-81, we find Ash Zone 1, the Younger Dryas increase in Neogloboquadrina pachyderma sinistral abundance, and maximum abundance of this species during glaciation. N. pachyderma dextral oxygen isotopic analyses have a late glacial to interglacial range of 1.5 per mil. A reduction of about 1 per mil in delta18O occurred at about 12 ka, whereas U37 K' and the foraminiferal fauna indicate a 2°C warming. This implies a 0.9 per mil salinity effect on delta18O which we attribute to meltwater freshening. All three parameters indicate cooling during the Younger Dryas. U37 K' SST estimates show that the major shift from deglacial to interglacial temperatures occurred after the Younger Dryas in termination 1b, in contrast to the assemblage data, which show this jump in SST at the end of the glaciation during termination Ia. Differences between the two SST estimators, which may result from their different (floral versus faunal) sources, are more pronounced between transitions Ia and Ib. This may reflect different habitats under the unusual sea surface conditions of the deglaciation. Article in Journal/Newspaper Neogloboquadrina pachyderma Northeast Atlantic DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
We present a 15 kyr sea surface temperature (SST) record for a high sedimentation rate core (KNR51-29GGC) from the Feni Drift off of Ireland, based on an organic geochemical technique for paleotemperature estimation, U37 K'. We compare the U37 K' temperature record to planktonic foraminiferal delta18O and foraminiferal assemblage SST estimates from the same sample horizons. U37 K' gives SST estimates of 13°C for the early deglacial and 18°C for the Holocene and Recent, whereas assemblages give estimates of 9°C and 13°C, respectively. As in nearby core V23-81, we find Ash Zone 1, the Younger Dryas increase in Neogloboquadrina pachyderma sinistral abundance, and maximum abundance of this species during glaciation. N. pachyderma dextral oxygen isotopic analyses have a late glacial to interglacial range of 1.5 per mil. A reduction of about 1 per mil in delta18O occurred at about 12 ka, whereas U37 K' and the foraminiferal fauna indicate a 2°C warming. This implies a 0.9 per mil salinity effect on delta18O which we attribute to meltwater freshening. All three parameters indicate cooling during the Younger Dryas. U37 K' SST estimates show that the major shift from deglacial to interglacial temperatures occurred after the Younger Dryas in termination 1b, in contrast to the assemblage data, which show this jump in SST at the end of the glaciation during termination Ia. Differences between the two SST estimators, which may result from their different (floral versus faunal) sources, are more pronounced between transitions Ia and Ib. This may reflect different habitats under the unusual sea surface conditions of the deglaciation. |
format |
Article in Journal/Newspaper |
author |
Sikes, Elisabeth L Keigwin, Lloyd D |
spellingShingle |
Sikes, Elisabeth L Keigwin, Lloyd D Sea surface temperature reconstruction for sediment core KNO5103-0029GGC, supplement to: Sikes, Elisabeth L; Keigwin, Lloyd D (1996): A reexamination of northeast Atlantic sea surface temperature and salinity over the last 16 kyr. Paleoceanography, 11(3), 327-342 |
author_facet |
Sikes, Elisabeth L Keigwin, Lloyd D |
author_sort |
Sikes, Elisabeth L |
title |
Sea surface temperature reconstruction for sediment core KNO5103-0029GGC, supplement to: Sikes, Elisabeth L; Keigwin, Lloyd D (1996): A reexamination of northeast Atlantic sea surface temperature and salinity over the last 16 kyr. Paleoceanography, 11(3), 327-342 |
title_short |
Sea surface temperature reconstruction for sediment core KNO5103-0029GGC, supplement to: Sikes, Elisabeth L; Keigwin, Lloyd D (1996): A reexamination of northeast Atlantic sea surface temperature and salinity over the last 16 kyr. Paleoceanography, 11(3), 327-342 |
title_full |
Sea surface temperature reconstruction for sediment core KNO5103-0029GGC, supplement to: Sikes, Elisabeth L; Keigwin, Lloyd D (1996): A reexamination of northeast Atlantic sea surface temperature and salinity over the last 16 kyr. Paleoceanography, 11(3), 327-342 |
title_fullStr |
Sea surface temperature reconstruction for sediment core KNO5103-0029GGC, supplement to: Sikes, Elisabeth L; Keigwin, Lloyd D (1996): A reexamination of northeast Atlantic sea surface temperature and salinity over the last 16 kyr. Paleoceanography, 11(3), 327-342 |
title_full_unstemmed |
Sea surface temperature reconstruction for sediment core KNO5103-0029GGC, supplement to: Sikes, Elisabeth L; Keigwin, Lloyd D (1996): A reexamination of northeast Atlantic sea surface temperature and salinity over the last 16 kyr. Paleoceanography, 11(3), 327-342 |
title_sort |
sea surface temperature reconstruction for sediment core kno5103-0029ggc, supplement to: sikes, elisabeth l; keigwin, lloyd d (1996): a reexamination of northeast atlantic sea surface temperature and salinity over the last 16 kyr. paleoceanography, 11(3), 327-342 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1996 |
url |
https://dx.doi.org/10.1594/pangaea.730038 https://doi.pangaea.de/10.1594/PANGAEA.730038 |
genre |
Neogloboquadrina pachyderma Northeast Atlantic |
genre_facet |
Neogloboquadrina pachyderma Northeast Atlantic |
op_relation |
https://dx.doi.org/10.1029/95pa03697 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.730038 https://doi.org/10.1029/95pa03697 |
_version_ |
1766073110489989120 |