Sediment, isotopic and geochemical record during Marine Isotope Stages 29 to 34 of IODP Site 339-U1387, supplement to: Voelker, Antje H L; Salgueiro, Emilia; Rodrigues, Teresa; Jiménez-Espejo, Francisco Jose; Bahr, André; Alberto, Ana; Loureiro, Isabel; Padilha, Mária; Rebotim, Andreia; Röhl, Ursula (2015): Mediterranean Outflow and surface water variability off southern Portugal during the early Pleistocene: A snapshot at Marine Isotope Stages 29 to 34 (1020–1135ka). Global and Planetary Change, 133, 223-237
Centennial-to-millennial scale records from IODP Site U1387, drilled during IODP Expedition 339 into the Faro Drift at 558 m water depth, now allow evaluating the climatic history of the upper core of the Mediterranean Outflow (MOW) and of the surface waters in the northern Gulf of Cadiz during the...
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ftdatacite:10.1594/pangaea.848409 2023-05-15T17:37:01+02:00 Sediment, isotopic and geochemical record during Marine Isotope Stages 29 to 34 of IODP Site 339-U1387, supplement to: Voelker, Antje H L; Salgueiro, Emilia; Rodrigues, Teresa; Jiménez-Espejo, Francisco Jose; Bahr, André; Alberto, Ana; Loureiro, Isabel; Padilha, Mária; Rebotim, Andreia; Röhl, Ursula (2015): Mediterranean Outflow and surface water variability off southern Portugal during the early Pleistocene: A snapshot at Marine Isotope Stages 29 to 34 (1020–1135ka). Global and Planetary Change, 133, 223-237 Voelker, Antje H L Salgueiro, Emilia Rodrigues, Teresa Jiménez-Espejo, Francisco Jose Bahr, André Alberto, Ana Loureiro, Isabel Padilha, Mária Rebotim, Andreia Röhl, Ursula 2015 application/zip https://dx.doi.org/10.1594/pangaea.848409 https://doi.pangaea.de/10.1594/PANGAEA.848409 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.gloplacha.2015.08.015 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Collection article Supplementary Collection of Datasets 2015 ftdatacite https://doi.org/10.1594/pangaea.848409 https://doi.org/10.1016/j.gloplacha.2015.08.015 2021-11-05T12:55:41Z Centennial-to-millennial scale records from IODP Site U1387, drilled during IODP Expedition 339 into the Faro Drift at 558 m water depth, now allow evaluating the climatic history of the upper core of the Mediterranean Outflow (MOW) and of the surface waters in the northern Gulf of Cadiz during the early Pleistocene. This study focuses on the period from Marine Isotope Stage (MIS) 29 to 34, i.e. the interval surrounding extreme interglacial MIS 31. Conditions in the upper MOW reflect obliquity, precession and millennial-scale variations. The benthic d18O signal follows obliquity with the exception of an additional, smaller d18O peak that marks the MIS 32/31 transition. Insolation maxima (precession minima) led to poor ventilation and a sluggish upper MOW core, whereas insolation minima were associated with enhanced ventilation and often also increased bottom current velocity. Millennial-scale periods of colder sea-surface temperatures (SST) were associated with short-term maxima in flow velocity and better ventilation, reminiscent of conditions known from MIS 3. A prominent contourite layer, coinciding with insolation cycle 100, was formed during MIS 31 and represents one of the few contourites developing within an interglacial period. MIS 31 surface water conditions were characterized by an extended period (1065-1091 ka) of warm SST, but SST were not much warmer than during MIS 33. Interglacial to glacial transitions experienced 2 to 3 stadial/interstadial cycles, just like their mid-to-late Pleistocene counterparts. Glacial MIS 30 and 32 recorded periods of extremely cold (< 12°C) SST that in their climatic impact were comparable to the Heinrich events of the mid and late Pleistocene. Glacial MIS 34, on the other hand, was a relative warm glacial period off southern Portugal. Overall, surface water and MOW conditions at Site U1387 show strong congruence with Mediterranean climate, whereas millennial-scale variations are closely linked to North Atlantic circulation changes. Article in Journal/Newspaper North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Jiménez ENVELOPE(-68.083,-68.083,-67.567,-67.567) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Integrated Ocean Drilling Program / International Ocean Discovery Program IODP |
spellingShingle |
Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Voelker, Antje H L Salgueiro, Emilia Rodrigues, Teresa Jiménez-Espejo, Francisco Jose Bahr, André Alberto, Ana Loureiro, Isabel Padilha, Mária Rebotim, Andreia Röhl, Ursula Sediment, isotopic and geochemical record during Marine Isotope Stages 29 to 34 of IODP Site 339-U1387, supplement to: Voelker, Antje H L; Salgueiro, Emilia; Rodrigues, Teresa; Jiménez-Espejo, Francisco Jose; Bahr, André; Alberto, Ana; Loureiro, Isabel; Padilha, Mária; Rebotim, Andreia; Röhl, Ursula (2015): Mediterranean Outflow and surface water variability off southern Portugal during the early Pleistocene: A snapshot at Marine Isotope Stages 29 to 34 (1020–1135ka). Global and Planetary Change, 133, 223-237 |
topic_facet |
Integrated Ocean Drilling Program / International Ocean Discovery Program IODP |
description |
Centennial-to-millennial scale records from IODP Site U1387, drilled during IODP Expedition 339 into the Faro Drift at 558 m water depth, now allow evaluating the climatic history of the upper core of the Mediterranean Outflow (MOW) and of the surface waters in the northern Gulf of Cadiz during the early Pleistocene. This study focuses on the period from Marine Isotope Stage (MIS) 29 to 34, i.e. the interval surrounding extreme interglacial MIS 31. Conditions in the upper MOW reflect obliquity, precession and millennial-scale variations. The benthic d18O signal follows obliquity with the exception of an additional, smaller d18O peak that marks the MIS 32/31 transition. Insolation maxima (precession minima) led to poor ventilation and a sluggish upper MOW core, whereas insolation minima were associated with enhanced ventilation and often also increased bottom current velocity. Millennial-scale periods of colder sea-surface temperatures (SST) were associated with short-term maxima in flow velocity and better ventilation, reminiscent of conditions known from MIS 3. A prominent contourite layer, coinciding with insolation cycle 100, was formed during MIS 31 and represents one of the few contourites developing within an interglacial period. MIS 31 surface water conditions were characterized by an extended period (1065-1091 ka) of warm SST, but SST were not much warmer than during MIS 33. Interglacial to glacial transitions experienced 2 to 3 stadial/interstadial cycles, just like their mid-to-late Pleistocene counterparts. Glacial MIS 30 and 32 recorded periods of extremely cold (< 12°C) SST that in their climatic impact were comparable to the Heinrich events of the mid and late Pleistocene. Glacial MIS 34, on the other hand, was a relative warm glacial period off southern Portugal. Overall, surface water and MOW conditions at Site U1387 show strong congruence with Mediterranean climate, whereas millennial-scale variations are closely linked to North Atlantic circulation changes. |
format |
Article in Journal/Newspaper |
author |
Voelker, Antje H L Salgueiro, Emilia Rodrigues, Teresa Jiménez-Espejo, Francisco Jose Bahr, André Alberto, Ana Loureiro, Isabel Padilha, Mária Rebotim, Andreia Röhl, Ursula |
author_facet |
Voelker, Antje H L Salgueiro, Emilia Rodrigues, Teresa Jiménez-Espejo, Francisco Jose Bahr, André Alberto, Ana Loureiro, Isabel Padilha, Mária Rebotim, Andreia Röhl, Ursula |
author_sort |
Voelker, Antje H L |
title |
Sediment, isotopic and geochemical record during Marine Isotope Stages 29 to 34 of IODP Site 339-U1387, supplement to: Voelker, Antje H L; Salgueiro, Emilia; Rodrigues, Teresa; Jiménez-Espejo, Francisco Jose; Bahr, André; Alberto, Ana; Loureiro, Isabel; Padilha, Mária; Rebotim, Andreia; Röhl, Ursula (2015): Mediterranean Outflow and surface water variability off southern Portugal during the early Pleistocene: A snapshot at Marine Isotope Stages 29 to 34 (1020–1135ka). Global and Planetary Change, 133, 223-237 |
title_short |
Sediment, isotopic and geochemical record during Marine Isotope Stages 29 to 34 of IODP Site 339-U1387, supplement to: Voelker, Antje H L; Salgueiro, Emilia; Rodrigues, Teresa; Jiménez-Espejo, Francisco Jose; Bahr, André; Alberto, Ana; Loureiro, Isabel; Padilha, Mária; Rebotim, Andreia; Röhl, Ursula (2015): Mediterranean Outflow and surface water variability off southern Portugal during the early Pleistocene: A snapshot at Marine Isotope Stages 29 to 34 (1020–1135ka). Global and Planetary Change, 133, 223-237 |
title_full |
Sediment, isotopic and geochemical record during Marine Isotope Stages 29 to 34 of IODP Site 339-U1387, supplement to: Voelker, Antje H L; Salgueiro, Emilia; Rodrigues, Teresa; Jiménez-Espejo, Francisco Jose; Bahr, André; Alberto, Ana; Loureiro, Isabel; Padilha, Mária; Rebotim, Andreia; Röhl, Ursula (2015): Mediterranean Outflow and surface water variability off southern Portugal during the early Pleistocene: A snapshot at Marine Isotope Stages 29 to 34 (1020–1135ka). Global and Planetary Change, 133, 223-237 |
title_fullStr |
Sediment, isotopic and geochemical record during Marine Isotope Stages 29 to 34 of IODP Site 339-U1387, supplement to: Voelker, Antje H L; Salgueiro, Emilia; Rodrigues, Teresa; Jiménez-Espejo, Francisco Jose; Bahr, André; Alberto, Ana; Loureiro, Isabel; Padilha, Mária; Rebotim, Andreia; Röhl, Ursula (2015): Mediterranean Outflow and surface water variability off southern Portugal during the early Pleistocene: A snapshot at Marine Isotope Stages 29 to 34 (1020–1135ka). Global and Planetary Change, 133, 223-237 |
title_full_unstemmed |
Sediment, isotopic and geochemical record during Marine Isotope Stages 29 to 34 of IODP Site 339-U1387, supplement to: Voelker, Antje H L; Salgueiro, Emilia; Rodrigues, Teresa; Jiménez-Espejo, Francisco Jose; Bahr, André; Alberto, Ana; Loureiro, Isabel; Padilha, Mária; Rebotim, Andreia; Röhl, Ursula (2015): Mediterranean Outflow and surface water variability off southern Portugal during the early Pleistocene: A snapshot at Marine Isotope Stages 29 to 34 (1020–1135ka). Global and Planetary Change, 133, 223-237 |
title_sort |
sediment, isotopic and geochemical record during marine isotope stages 29 to 34 of iodp site 339-u1387, supplement to: voelker, antje h l; salgueiro, emilia; rodrigues, teresa; jiménez-espejo, francisco jose; bahr, andré; alberto, ana; loureiro, isabel; padilha, mária; rebotim, andreia; röhl, ursula (2015): mediterranean outflow and surface water variability off southern portugal during the early pleistocene: a snapshot at marine isotope stages 29 to 34 (1020–1135ka). global and planetary change, 133, 223-237 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2015 |
url |
https://dx.doi.org/10.1594/pangaea.848409 https://doi.pangaea.de/10.1594/PANGAEA.848409 |
long_lat |
ENVELOPE(-68.083,-68.083,-67.567,-67.567) |
geographic |
Jiménez |
geographic_facet |
Jiménez |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://dx.doi.org/10.1016/j.gloplacha.2015.08.015 |
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.848409 https://doi.org/10.1016/j.gloplacha.2015.08.015 |
_version_ |
1766136706500657152 |