Mediterranean Outflow Water variability during the Early Pleistocene
Gaining insights into the evolution of Mediterranean Outflow Water (MOW) during the Early Pleistocene has been so far hampered by the lack of available palaeoclimatic archives. Here we present the first benthic foraminifera stable oxygen and carbon isotope records and grain-size data from IODP Exped...
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ftcopernicus:oai:publications.copernicus.org:cp57102 2023-05-15T17:29:56+02:00 Mediterranean Outflow Water variability during the Early Pleistocene Kaboth, Stefanie Grunert, Patrick Lourens, Lucas 2018-09-27 application/pdf https://doi.org/10.5194/cp-13-1023-2017 https://cp.copernicus.org/articles/13/1023/2017/ eng eng doi:10.5194/cp-13-1023-2017 https://cp.copernicus.org/articles/13/1023/2017/ eISSN: 1814-9332 Text 2018 ftcopernicus https://doi.org/10.5194/cp-13-1023-2017 2020-07-20T16:23:38Z Gaining insights into the evolution of Mediterranean Outflow Water (MOW) during the Early Pleistocene has been so far hampered by the lack of available palaeoclimatic archives. Here we present the first benthic foraminifera stable oxygen and carbon isotope records and grain-size data from IODP Expedition 339 Site U1389 presently located within the upper core of the MOW in the Gulf of Cadiz for the time interval between 2.6 and 1.8 Ma. A comparison with an intermediate water mass record from the Mediterranean Sea strongly suggest an active MOW supplying Site U1389 on glacial–interglacial timescales during the Early Pleistocene. We also find indication that the increasing presence of MOW in the Gulf of Cadiz during the investigated time interval aligns with the progressive northward protrusion of Mediterranean sourced intermediate water masses into the North Atlantic, possibly modulating the intensification of the North Atlantic Meridional Overturning Circulation at the same time. Additionally, our results suggest that MOW flow strength was already governed by precession and semi-precession cyclicity during the Early Pleistocene against the background of glacial–interglacial variability. Text North Atlantic Copernicus Publications: E-Journals Climate of the Past 13 8 1023 1035 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
Gaining insights into the evolution of Mediterranean Outflow Water (MOW) during the Early Pleistocene has been so far hampered by the lack of available palaeoclimatic archives. Here we present the first benthic foraminifera stable oxygen and carbon isotope records and grain-size data from IODP Expedition 339 Site U1389 presently located within the upper core of the MOW in the Gulf of Cadiz for the time interval between 2.6 and 1.8 Ma. A comparison with an intermediate water mass record from the Mediterranean Sea strongly suggest an active MOW supplying Site U1389 on glacial–interglacial timescales during the Early Pleistocene. We also find indication that the increasing presence of MOW in the Gulf of Cadiz during the investigated time interval aligns with the progressive northward protrusion of Mediterranean sourced intermediate water masses into the North Atlantic, possibly modulating the intensification of the North Atlantic Meridional Overturning Circulation at the same time. Additionally, our results suggest that MOW flow strength was already governed by precession and semi-precession cyclicity during the Early Pleistocene against the background of glacial–interglacial variability. |
format |
Text |
author |
Kaboth, Stefanie Grunert, Patrick Lourens, Lucas |
spellingShingle |
Kaboth, Stefanie Grunert, Patrick Lourens, Lucas Mediterranean Outflow Water variability during the Early Pleistocene |
author_facet |
Kaboth, Stefanie Grunert, Patrick Lourens, Lucas |
author_sort |
Kaboth, Stefanie |
title |
Mediterranean Outflow Water variability during the Early Pleistocene |
title_short |
Mediterranean Outflow Water variability during the Early Pleistocene |
title_full |
Mediterranean Outflow Water variability during the Early Pleistocene |
title_fullStr |
Mediterranean Outflow Water variability during the Early Pleistocene |
title_full_unstemmed |
Mediterranean Outflow Water variability during the Early Pleistocene |
title_sort |
mediterranean outflow water variability during the early pleistocene |
publishDate |
2018 |
url |
https://doi.org/10.5194/cp-13-1023-2017 https://cp.copernicus.org/articles/13/1023/2017/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-13-1023-2017 https://cp.copernicus.org/articles/13/1023/2017/ |
op_doi |
https://doi.org/10.5194/cp-13-1023-2017 |
container_title |
Climate of the Past |
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13 |
container_issue |
8 |
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1023 |
op_container_end_page |
1035 |
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1766125175267393536 |