Sea surface temperatures, alkenones and sedimentation rates at the Alboran basin
Sea surface temperatures (SSTs) recorded by alkenones and oxygen isotopes in the Alboran basin are used here to describe, at an unprecedented fine temporal resolution, the present interglaciation (PIG, initiated at 11.7 ka BP), the last interglaciation (LIG, onset approximately at 129 ka) and respec...
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Format: | Dataset |
Language: | English |
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PANGAEA
2014
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.787986 https://doi.org/10.1594/PANGAEA.787986 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.787986 |
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openpolar |
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Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
description |
Sea surface temperatures (SSTs) recorded by alkenones and oxygen isotopes in the Alboran basin are used here to describe, at an unprecedented fine temporal resolution, the present interglaciation (PIG, initiated at 11.7 ka BP), the last interglaciation (LIG, onset approximately at 129 ka) and respective deglaciations. Similarities and dissimilarities in the progression of these periods are reviewed in comparison with ice cores and stalagmites. Cold spells coeval with the Heinrich events (H) described in the North Atlantic include multi-decadal scale oscillations not previously obvious (up to 4 °C in less than eight centuries within the stadials associated with H1 and H11, ca 133 ka and 17 ka respectively). These abrupt oscillations precede the accumulation of organic rich layers deposited when perihelion moves from alignment with NH spring equinox to the summer solstice, a reference for deglaciations. Events observed during the last deglaciation at 17 ka, 14.8 ka and 11.7 ka are reminiscent of events occurred during the penultimate deglaciation at ca 136 ka, 132 ka and 129 ka, respectively. The SST trend during the PIG is no more than 2 °C (from 20 °C to 18 °C; up to -0.2 °C/ka). The trend is steeper during the LIG, i.e. up to a 5 °C change from the early interglaciation to immediately before the glacial inception (from 23 °C to 18 °C; up to -0.4 °C/ka). Events are superimposed upon a long term trend towards colder SSTs, beginning with SST maxima followed by temperate periods until perihelion aligned with the NH autumn equinox (before ca 5.3 ka for the PIG and 121 ka for the LIG). A cold spell of around eight centuries at 2.8 ka during the PIG was possibly mimicked during the LIG at ca 118 ka by a SST fall of around 1 °C in a millennium. These events led interglacial SST to stabilise at around 18 °C. The glacial inception, barely evident at the beginning ca 115 ka (North Atlantic event C25, after perihelion passage in the NH winter solstice), culminated with a SST drop of at least 2 °C in two millennia (event ... |
format |
Dataset |
author |
Martrat, Belén Jimenez-Amat, Patricia Zahn, Rainer Grimalt, Joan O |
spellingShingle |
Martrat, Belén Jimenez-Amat, Patricia Zahn, Rainer Grimalt, Joan O Sea surface temperatures, alkenones and sedimentation rates at the Alboran basin |
author_facet |
Martrat, Belén Jimenez-Amat, Patricia Zahn, Rainer Grimalt, Joan O |
author_sort |
Martrat, Belén |
title |
Sea surface temperatures, alkenones and sedimentation rates at the Alboran basin |
title_short |
Sea surface temperatures, alkenones and sedimentation rates at the Alboran basin |
title_full |
Sea surface temperatures, alkenones and sedimentation rates at the Alboran basin |
title_fullStr |
Sea surface temperatures, alkenones and sedimentation rates at the Alboran basin |
title_full_unstemmed |
Sea surface temperatures, alkenones and sedimentation rates at the Alboran basin |
title_sort |
sea surface temperatures, alkenones and sedimentation rates at the alboran basin |
publisher |
PANGAEA |
publishDate |
2014 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.787986 https://doi.org/10.1594/PANGAEA.787986 |
op_coverage |
MEDIAN LATITUDE: 36.126800 * MEDIAN LONGITUDE: -2.963039 * SOUTH-BOUND LATITUDE: 36.031700 * WEST-BOUND LONGITUDE: -4.312667 * NORTH-BOUND LATITUDE: 36.205367 * EAST-BOUND LONGITUDE: -1.955283 * DATE/TIME START: 1995-05-21T00:00:00 * DATE/TIME END: 1995-07-09T00:00:00 |
long_lat |
ENVELOPE(-4.312667,-1.955283,36.205367,36.031700) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Martrat, Belén; Jimenez-Amat, Patricia; Zahn, Rainer; Grimalt, Joan O (2014): Similarities and dissimilarities between the last two deglaciations and interglaciations in the North Atlantic region. Quaternary Science Reviews, 99, 122-134, https://doi.org/10.1016/j.quascirev.2014.06.016 |
op_relation |
Cacho, Isabel; Grimalt, Joan O; Canals, Miquel (2002): (Fig. 11c) Alkenones (di and tri alkenones of 37 carbons) from sediment core MD95-2043. PANGAEA, https://doi.org/10.1594/PANGAEA.787809 Cacho, Isabel; Grimalt, Joan O; Pelejero, Carles; Canals, Miquel; Sierro, Francisco Javier; Flores, José-Abel; Shackleton, Nicholas J (1999): Alkenone-derived Holocene sea-surface temperature records of sediment core MD95-2043. PANGAEA, https://doi.org/10.1594/PANGAEA.438816 Martrat, Belén; Grimalt, Joan O; López-Martinez, Constancia; Cacho, Isabel; Sierro, Francisco Javier; Flores, José-Abel; Zahn, Rainer; Canals, Miquel; Curtis, Jason H; Hodell, David A (2004): Sea surface temperatures, alkenones and sedimentation rate from ODP Hole 161-977A. PANGAEA, https://doi.org/10.1594/PANGAEA.787811 Martrat, Belén; Grimalt, Joan O; Shackleton, Nicholas J; de Abreu, Lucia; Hutterli, Manuel A; Stocker, Thomas F (2007): (Table S1) Sea surface temperature estimation for sediment core MD01-2444. PANGAEA, https://doi.org/10.1594/PANGAEA.771891 Martrat, Belén; Grimalt, Joan O; Shackleton, Nicholas J; de Abreu, Lucia; Hutterli, Manuel A; Stocker, Thomas F (2007): (Table S2) Sea surface temperature estimation for ODP Hole 161-977A. PANGAEA, https://doi.org/10.1594/PANGAEA.771890 https://doi.pangaea.de/10.1594/PANGAEA.787986 https://doi.org/10.1594/PANGAEA.787986 |
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.787986 https://doi.org/10.1016/j.quascirev.2014.06.016 https://doi.org/10.1594/PANGAEA.787809 https://doi.org/10.1594/PANGAEA.438816 https://doi.org/10.1594/PANGAEA.787811 https://doi.org/10.1594/PANGAEA.771891 |
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1766131278529167360 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.787986 2023-05-15T17:32:57+02:00 Sea surface temperatures, alkenones and sedimentation rates at the Alboran basin Martrat, Belén Jimenez-Amat, Patricia Zahn, Rainer Grimalt, Joan O MEDIAN LATITUDE: 36.126800 * MEDIAN LONGITUDE: -2.963039 * SOUTH-BOUND LATITUDE: 36.031700 * WEST-BOUND LONGITUDE: -4.312667 * NORTH-BOUND LATITUDE: 36.205367 * EAST-BOUND LONGITUDE: -1.955283 * DATE/TIME START: 1995-05-21T00:00:00 * DATE/TIME END: 1995-07-09T00:00:00 2014-07-08 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.787986 https://doi.org/10.1594/PANGAEA.787986 en eng PANGAEA Cacho, Isabel; Grimalt, Joan O; Canals, Miquel (2002): (Fig. 11c) Alkenones (di and tri alkenones of 37 carbons) from sediment core MD95-2043. PANGAEA, https://doi.org/10.1594/PANGAEA.787809 Cacho, Isabel; Grimalt, Joan O; Pelejero, Carles; Canals, Miquel; Sierro, Francisco Javier; Flores, José-Abel; Shackleton, Nicholas J (1999): Alkenone-derived Holocene sea-surface temperature records of sediment core MD95-2043. PANGAEA, https://doi.org/10.1594/PANGAEA.438816 Martrat, Belén; Grimalt, Joan O; López-Martinez, Constancia; Cacho, Isabel; Sierro, Francisco Javier; Flores, José-Abel; Zahn, Rainer; Canals, Miquel; Curtis, Jason H; Hodell, David A (2004): Sea surface temperatures, alkenones and sedimentation rate from ODP Hole 161-977A. PANGAEA, https://doi.org/10.1594/PANGAEA.787811 Martrat, Belén; Grimalt, Joan O; Shackleton, Nicholas J; de Abreu, Lucia; Hutterli, Manuel A; Stocker, Thomas F (2007): (Table S1) Sea surface temperature estimation for sediment core MD01-2444. PANGAEA, https://doi.org/10.1594/PANGAEA.771891 Martrat, Belén; Grimalt, Joan O; Shackleton, Nicholas J; de Abreu, Lucia; Hutterli, Manuel A; Stocker, Thomas F (2007): (Table S2) Sea surface temperature estimation for ODP Hole 161-977A. PANGAEA, https://doi.org/10.1594/PANGAEA.771890 https://doi.pangaea.de/10.1594/PANGAEA.787986 https://doi.org/10.1594/PANGAEA.787986 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Martrat, Belén; Jimenez-Amat, Patricia; Zahn, Rainer; Grimalt, Joan O (2014): Similarities and dissimilarities between the last two deglaciations and interglaciations in the North Atlantic region. Quaternary Science Reviews, 99, 122-134, https://doi.org/10.1016/j.quascirev.2014.06.016 Dataset 2014 ftpangaea https://doi.org/10.1594/PANGAEA.787986 https://doi.org/10.1016/j.quascirev.2014.06.016 https://doi.org/10.1594/PANGAEA.787809 https://doi.org/10.1594/PANGAEA.438816 https://doi.org/10.1594/PANGAEA.787811 https://doi.org/10.1594/PANGAEA.771891 2023-01-20T07:32:40Z Sea surface temperatures (SSTs) recorded by alkenones and oxygen isotopes in the Alboran basin are used here to describe, at an unprecedented fine temporal resolution, the present interglaciation (PIG, initiated at 11.7 ka BP), the last interglaciation (LIG, onset approximately at 129 ka) and respective deglaciations. Similarities and dissimilarities in the progression of these periods are reviewed in comparison with ice cores and stalagmites. Cold spells coeval with the Heinrich events (H) described in the North Atlantic include multi-decadal scale oscillations not previously obvious (up to 4 °C in less than eight centuries within the stadials associated with H1 and H11, ca 133 ka and 17 ka respectively). These abrupt oscillations precede the accumulation of organic rich layers deposited when perihelion moves from alignment with NH spring equinox to the summer solstice, a reference for deglaciations. Events observed during the last deglaciation at 17 ka, 14.8 ka and 11.7 ka are reminiscent of events occurred during the penultimate deglaciation at ca 136 ka, 132 ka and 129 ka, respectively. The SST trend during the PIG is no more than 2 °C (from 20 °C to 18 °C; up to -0.2 °C/ka). The trend is steeper during the LIG, i.e. up to a 5 °C change from the early interglaciation to immediately before the glacial inception (from 23 °C to 18 °C; up to -0.4 °C/ka). Events are superimposed upon a long term trend towards colder SSTs, beginning with SST maxima followed by temperate periods until perihelion aligned with the NH autumn equinox (before ca 5.3 ka for the PIG and 121 ka for the LIG). A cold spell of around eight centuries at 2.8 ka during the PIG was possibly mimicked during the LIG at ca 118 ka by a SST fall of around 1 °C in a millennium. These events led interglacial SST to stabilise at around 18 °C. The glacial inception, barely evident at the beginning ca 115 ka (North Atlantic event C25, after perihelion passage in the NH winter solstice), culminated with a SST drop of at least 2 °C in two millennia (event ... Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-4.312667,-1.955283,36.205367,36.031700) |