Mid-Pleistocene (800-400 ka) records of benthic and planktic foraminfer δ¹⁸O and δ¹³C, planktic foraminifer based SST, and IRD of IODP Site 306-U1314, supplement to: Alonso-Garcia, Montserrat; Sierro, Francisco Javier; Kucera, Michal; Flores, José-Abel; Cacho, Isabel; Andersen, Nils (2011): Ocean circulation, ice sheet growth and interhemispheric coupling of millennial climate variability during the mid-Pleistocene (ca 800–400ka). Quaternary Science Reviews, 30(23-24), 3234-3247
Stable carbon and oxygen isotopes from benthic and planktic foraminifers, planktic foraminifer assemblages and ice rafted debris from the North Atlantic Site U1314 (Integrated Ocean Drilling Program Expedition 306) were examined to investigate orbital and millennial-scale climate variability in the...
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ftdatacite:10.1594/pangaea.820282 2023-05-15T13:38:45+02:00 Mid-Pleistocene (800-400 ka) records of benthic and planktic foraminfer δ¹⁸O and δ¹³C, planktic foraminifer based SST, and IRD of IODP Site 306-U1314, supplement to: Alonso-Garcia, Montserrat; Sierro, Francisco Javier; Kucera, Michal; Flores, José-Abel; Cacho, Isabel; Andersen, Nils (2011): Ocean circulation, ice sheet growth and interhemispheric coupling of millennial climate variability during the mid-Pleistocene (ca 800–400ka). Quaternary Science Reviews, 30(23-24), 3234-3247 Alonso-Garcia, Montserrat Sierro, Francisco Javier Kucera, Michal Flores, José-Abel Cacho, Isabel Andersen, Nils 2011 application/zip https://dx.doi.org/10.1594/pangaea.820282 https://doi.pangaea.de/10.1594/PANGAEA.820282 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.quascirev.2011.08.005 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Composite Core Exp306 Joides Resolution Integrated Ocean Drilling Program / International Ocean Discovery Program IODP article Supplementary Collection of Datasets Collection 2011 ftdatacite https://doi.org/10.1594/pangaea.820282 https://doi.org/10.1016/j.quascirev.2011.08.005 2022-03-10T10:53:10Z Stable carbon and oxygen isotopes from benthic and planktic foraminifers, planktic foraminifer assemblages and ice rafted debris from the North Atlantic Site U1314 (Integrated Ocean Drilling Program Expedition 306) were examined to investigate orbital and millennial-scale climate variability in the North Atlantic and its impact on global circulation focusing on the development of glacial periods during the mid-Pleistocene (ca 800-400 ka). Glacial initiations were characterized by a rapid cooling (6-10 °C in less than 7 kyr) in the mean annual sea surface temperature (SST), increasing benthic d18O values and high benthic d13C values. The continuous increase in benthic d18O suggests a continuous ice sheet growth whereas the positive benthic d13C values indicate that the flow of the Iceland Scotland Overflow water (ISOW) was vigorous. Strong deep water formation in the Norwegian Greenland Sea promoted a high transfer of freshwater from the ocean to the continents. However, low SSTs at Site U1314 suggest a subpolar gyre cooling and freshening that may have reduced deep water formation in the Labrador Sea during glacial initiations.Once the 3.5 per mil threshold in the benthic d18O record was exceeded, ice rafting started and ice sheet growth was punctuated by millennial-scale waning events which returned to the ocean part of the freshwater accumulated on the continents. Ice-rafting events were associated with a rapid reduction in the ISOW (benthic d13C values dropped 0.5-1 per mil) and followed by millennial-scale warmings. The first two millennial-scale warm intervals of each glacial period reached interglacial temperatures and were particularly abrupt (6-10 °C in ~3 kyr). Subsequent millennial-scale warm events were cooler probably because the AMOC was rather reduced as suggested by the low benthic d13C values. These two abrupt warming events that occurred at early glacial periods were also observed in the Antarctic temperature and CO2 records, suggesting a close correlation between both Hemispheres. The comparison of the sea surface proxies with the benthic d18O record (as the Southern sign) indicates the presence of a millennial-scale seesaw pattern similar to that seen during the Last Glacial period. Article in Journal/Newspaper Antarc* Antarctic Greenland Greenland Sea Ice Sheet Iceland Labrador Sea North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Antarctic The Antarctic Greenland Nils ENVELOPE(48.017,48.017,-68.067,-68.067) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Composite Core Exp306 Joides Resolution Integrated Ocean Drilling Program / International Ocean Discovery Program IODP |
spellingShingle |
Composite Core Exp306 Joides Resolution Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Alonso-Garcia, Montserrat Sierro, Francisco Javier Kucera, Michal Flores, José-Abel Cacho, Isabel Andersen, Nils Mid-Pleistocene (800-400 ka) records of benthic and planktic foraminfer δ¹⁸O and δ¹³C, planktic foraminifer based SST, and IRD of IODP Site 306-U1314, supplement to: Alonso-Garcia, Montserrat; Sierro, Francisco Javier; Kucera, Michal; Flores, José-Abel; Cacho, Isabel; Andersen, Nils (2011): Ocean circulation, ice sheet growth and interhemispheric coupling of millennial climate variability during the mid-Pleistocene (ca 800–400ka). Quaternary Science Reviews, 30(23-24), 3234-3247 |
topic_facet |
Composite Core Exp306 Joides Resolution Integrated Ocean Drilling Program / International Ocean Discovery Program IODP |
description |
Stable carbon and oxygen isotopes from benthic and planktic foraminifers, planktic foraminifer assemblages and ice rafted debris from the North Atlantic Site U1314 (Integrated Ocean Drilling Program Expedition 306) were examined to investigate orbital and millennial-scale climate variability in the North Atlantic and its impact on global circulation focusing on the development of glacial periods during the mid-Pleistocene (ca 800-400 ka). Glacial initiations were characterized by a rapid cooling (6-10 °C in less than 7 kyr) in the mean annual sea surface temperature (SST), increasing benthic d18O values and high benthic d13C values. The continuous increase in benthic d18O suggests a continuous ice sheet growth whereas the positive benthic d13C values indicate that the flow of the Iceland Scotland Overflow water (ISOW) was vigorous. Strong deep water formation in the Norwegian Greenland Sea promoted a high transfer of freshwater from the ocean to the continents. However, low SSTs at Site U1314 suggest a subpolar gyre cooling and freshening that may have reduced deep water formation in the Labrador Sea during glacial initiations.Once the 3.5 per mil threshold in the benthic d18O record was exceeded, ice rafting started and ice sheet growth was punctuated by millennial-scale waning events which returned to the ocean part of the freshwater accumulated on the continents. Ice-rafting events were associated with a rapid reduction in the ISOW (benthic d13C values dropped 0.5-1 per mil) and followed by millennial-scale warmings. The first two millennial-scale warm intervals of each glacial period reached interglacial temperatures and were particularly abrupt (6-10 °C in ~3 kyr). Subsequent millennial-scale warm events were cooler probably because the AMOC was rather reduced as suggested by the low benthic d13C values. These two abrupt warming events that occurred at early glacial periods were also observed in the Antarctic temperature and CO2 records, suggesting a close correlation between both Hemispheres. The comparison of the sea surface proxies with the benthic d18O record (as the Southern sign) indicates the presence of a millennial-scale seesaw pattern similar to that seen during the Last Glacial period. |
format |
Article in Journal/Newspaper |
author |
Alonso-Garcia, Montserrat Sierro, Francisco Javier Kucera, Michal Flores, José-Abel Cacho, Isabel Andersen, Nils |
author_facet |
Alonso-Garcia, Montserrat Sierro, Francisco Javier Kucera, Michal Flores, José-Abel Cacho, Isabel Andersen, Nils |
author_sort |
Alonso-Garcia, Montserrat |
title |
Mid-Pleistocene (800-400 ka) records of benthic and planktic foraminfer δ¹⁸O and δ¹³C, planktic foraminifer based SST, and IRD of IODP Site 306-U1314, supplement to: Alonso-Garcia, Montserrat; Sierro, Francisco Javier; Kucera, Michal; Flores, José-Abel; Cacho, Isabel; Andersen, Nils (2011): Ocean circulation, ice sheet growth and interhemispheric coupling of millennial climate variability during the mid-Pleistocene (ca 800–400ka). Quaternary Science Reviews, 30(23-24), 3234-3247 |
title_short |
Mid-Pleistocene (800-400 ka) records of benthic and planktic foraminfer δ¹⁸O and δ¹³C, planktic foraminifer based SST, and IRD of IODP Site 306-U1314, supplement to: Alonso-Garcia, Montserrat; Sierro, Francisco Javier; Kucera, Michal; Flores, José-Abel; Cacho, Isabel; Andersen, Nils (2011): Ocean circulation, ice sheet growth and interhemispheric coupling of millennial climate variability during the mid-Pleistocene (ca 800–400ka). Quaternary Science Reviews, 30(23-24), 3234-3247 |
title_full |
Mid-Pleistocene (800-400 ka) records of benthic and planktic foraminfer δ¹⁸O and δ¹³C, planktic foraminifer based SST, and IRD of IODP Site 306-U1314, supplement to: Alonso-Garcia, Montserrat; Sierro, Francisco Javier; Kucera, Michal; Flores, José-Abel; Cacho, Isabel; Andersen, Nils (2011): Ocean circulation, ice sheet growth and interhemispheric coupling of millennial climate variability during the mid-Pleistocene (ca 800–400ka). Quaternary Science Reviews, 30(23-24), 3234-3247 |
title_fullStr |
Mid-Pleistocene (800-400 ka) records of benthic and planktic foraminfer δ¹⁸O and δ¹³C, planktic foraminifer based SST, and IRD of IODP Site 306-U1314, supplement to: Alonso-Garcia, Montserrat; Sierro, Francisco Javier; Kucera, Michal; Flores, José-Abel; Cacho, Isabel; Andersen, Nils (2011): Ocean circulation, ice sheet growth and interhemispheric coupling of millennial climate variability during the mid-Pleistocene (ca 800–400ka). Quaternary Science Reviews, 30(23-24), 3234-3247 |
title_full_unstemmed |
Mid-Pleistocene (800-400 ka) records of benthic and planktic foraminfer δ¹⁸O and δ¹³C, planktic foraminifer based SST, and IRD of IODP Site 306-U1314, supplement to: Alonso-Garcia, Montserrat; Sierro, Francisco Javier; Kucera, Michal; Flores, José-Abel; Cacho, Isabel; Andersen, Nils (2011): Ocean circulation, ice sheet growth and interhemispheric coupling of millennial climate variability during the mid-Pleistocene (ca 800–400ka). Quaternary Science Reviews, 30(23-24), 3234-3247 |
title_sort |
mid-pleistocene (800-400 ka) records of benthic and planktic foraminfer δ¹⁸o and δ¹³c, planktic foraminifer based sst, and ird of iodp site 306-u1314, supplement to: alonso-garcia, montserrat; sierro, francisco javier; kucera, michal; flores, josé-abel; cacho, isabel; andersen, nils (2011): ocean circulation, ice sheet growth and interhemispheric coupling of millennial climate variability during the mid-pleistocene (ca 800–400ka). quaternary science reviews, 30(23-24), 3234-3247 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2011 |
url |
https://dx.doi.org/10.1594/pangaea.820282 https://doi.pangaea.de/10.1594/PANGAEA.820282 |
long_lat |
ENVELOPE(48.017,48.017,-68.067,-68.067) |
geographic |
Antarctic The Antarctic Greenland Nils |
geographic_facet |
Antarctic The Antarctic Greenland Nils |
genre |
Antarc* Antarctic Greenland Greenland Sea Ice Sheet Iceland Labrador Sea North Atlantic |
genre_facet |
Antarc* Antarctic Greenland Greenland Sea Ice Sheet Iceland Labrador Sea North Atlantic |
op_relation |
https://dx.doi.org/10.1016/j.quascirev.2011.08.005 |
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.820282 https://doi.org/10.1016/j.quascirev.2011.08.005 |
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1766110683001257984 |