High-resolution marine record of sediment core MD99-2343 in the Balearic Sea, supplement to: Frigola, Jaime; Moreno, Ana; Cacho, Isabel; Canals, Miquel; Sierro, Francisco Javier; Flores, José-Abel; Grimalt, Joan O (2008): Evidence of abrupt changes in Western Mediterranean Deep Water circulation during the last 50 kyr: A high-resolution marine record from the Balearic Sea. Quaternary International, 181(1), 88-104
The IMAGES core MD99-2343, recovered from a sediment drift north of the island of Minorca, in the north-western Mediterranean Sea, holds a high-resolution sequence that is perfectly suited to study the oscillations of the overturning system of the Western Mediterranean Deep Water (WMDW). Detailed an...
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ftdatacite:10.1594/pangaea.759537 2023-05-15T17:37:15+02:00 High-resolution marine record of sediment core MD99-2343 in the Balearic Sea, supplement to: Frigola, Jaime; Moreno, Ana; Cacho, Isabel; Canals, Miquel; Sierro, Francisco Javier; Flores, José-Abel; Grimalt, Joan O (2008): Evidence of abrupt changes in Western Mediterranean Deep Water circulation during the last 50 kyr: A high-resolution marine record from the Balearic Sea. Quaternary International, 181(1), 88-104 Frigola, Jaime Moreno, Ana Cacho, Isabel Canals, Miquel Sierro, Francisco Javier Flores, José-Abel Grimalt, Joan O 2008 application/zip https://dx.doi.org/10.1594/pangaea.759537 https://doi.pangaea.de/10.1594/PANGAEA.759537 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.quaint.2007.06.016 https://dx.doi.org/10.1029/2006pa001307 https://dx.doi.org/10.1029/2004pa001051 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Calypso Corer MD114 Marion Dufresne 1995 International Marine Global Change Study IMAGES Collection article Supplementary Collection of Datasets 2008 ftdatacite https://doi.org/10.1594/pangaea.759537 https://doi.org/10.1016/j.quaint.2007.06.016 https://doi.org/10.1029/2006pa001307 https://doi.org/10.1029/2004pa001051 2021-11-05T12:55:41Z The IMAGES core MD99-2343, recovered from a sediment drift north of the island of Minorca, in the north-western Mediterranean Sea, holds a high-resolution sequence that is perfectly suited to study the oscillations of the overturning system of the Western Mediterranean Deep Water (WMDW). Detailed analysis of grain-size and bulk geochemical composition reveals the sensitivity of this region to climate changes at both orbital and centennial-millennial temporal scales during the last 50 kyr. The dominant orbital pattern in the K/Al record indicates that sediment supply to the basin was controlled by the insolation evolution at 40°N, which forced changes in the fluvial regime, with more efficient sediment transport during insolation maxima. This orbital control also modulated the long-term pattern of the WMDW intensity as illustrated by the silt/clay ratio.However, deep convection was particularly sensitive to climatic changes at shorter time-scales, i.e. to centennial-millennial glacial and Holocene oscillations that are well documented by all the paleocurrent intensity proxies (Si/Al, Ti/Al and silt/clay ratios). Benthic isotopic records (d13C and d18O) show a Dansgaard-Oeschger (D-O) pattern of variability of WMDW properties, which can be associated with changing intensities of the deep currents system. The most prominent reduction on the WMDW overturning was caused by the post-glacial sea level rise.Three main scenarios of WMDW overturning are revealed: a strong mode during D-O Stadials, a weak mode during D-O Interstadials and an intermediate mode during cooling transitions. In addition, D-O Stadials associated with Heinrich events (HEs) have a very distinct signature as the strong mode of circulation, typical for the other D-O Stadials, was never reached during HE due to the surface freshening induced by the inflowing polar waters. Consequently, the WMDW overturning system oscillated around the intermediate mode of circulation during HE. Though surface conditions were more stable during the Holocene, the WMDW overturning cell still reacted synchronously to short-lived events, as shown by increments in the planktonic d18O record, triggering quick reinforcements of the deep water circulation. Overall, these results highlight the sensitivity of the WMDW to rapid climate change which in the recent past were likely induced by oceanographic and atmospheric reorganizations in the North Atlantic region. : Parts of the high resolution record (0-12 ka) have been published in Frigola et al. (2007). Article in Journal/Newspaper North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Moreno ENVELOPE(-62.300,-62.300,-64.083,-64.083) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Calypso Corer MD114 Marion Dufresne 1995 International Marine Global Change Study IMAGES |
spellingShingle |
Calypso Corer MD114 Marion Dufresne 1995 International Marine Global Change Study IMAGES Frigola, Jaime Moreno, Ana Cacho, Isabel Canals, Miquel Sierro, Francisco Javier Flores, José-Abel Grimalt, Joan O High-resolution marine record of sediment core MD99-2343 in the Balearic Sea, supplement to: Frigola, Jaime; Moreno, Ana; Cacho, Isabel; Canals, Miquel; Sierro, Francisco Javier; Flores, José-Abel; Grimalt, Joan O (2008): Evidence of abrupt changes in Western Mediterranean Deep Water circulation during the last 50 kyr: A high-resolution marine record from the Balearic Sea. Quaternary International, 181(1), 88-104 |
topic_facet |
Calypso Corer MD114 Marion Dufresne 1995 International Marine Global Change Study IMAGES |
description |
The IMAGES core MD99-2343, recovered from a sediment drift north of the island of Minorca, in the north-western Mediterranean Sea, holds a high-resolution sequence that is perfectly suited to study the oscillations of the overturning system of the Western Mediterranean Deep Water (WMDW). Detailed analysis of grain-size and bulk geochemical composition reveals the sensitivity of this region to climate changes at both orbital and centennial-millennial temporal scales during the last 50 kyr. The dominant orbital pattern in the K/Al record indicates that sediment supply to the basin was controlled by the insolation evolution at 40°N, which forced changes in the fluvial regime, with more efficient sediment transport during insolation maxima. This orbital control also modulated the long-term pattern of the WMDW intensity as illustrated by the silt/clay ratio.However, deep convection was particularly sensitive to climatic changes at shorter time-scales, i.e. to centennial-millennial glacial and Holocene oscillations that are well documented by all the paleocurrent intensity proxies (Si/Al, Ti/Al and silt/clay ratios). Benthic isotopic records (d13C and d18O) show a Dansgaard-Oeschger (D-O) pattern of variability of WMDW properties, which can be associated with changing intensities of the deep currents system. The most prominent reduction on the WMDW overturning was caused by the post-glacial sea level rise.Three main scenarios of WMDW overturning are revealed: a strong mode during D-O Stadials, a weak mode during D-O Interstadials and an intermediate mode during cooling transitions. In addition, D-O Stadials associated with Heinrich events (HEs) have a very distinct signature as the strong mode of circulation, typical for the other D-O Stadials, was never reached during HE due to the surface freshening induced by the inflowing polar waters. Consequently, the WMDW overturning system oscillated around the intermediate mode of circulation during HE. Though surface conditions were more stable during the Holocene, the WMDW overturning cell still reacted synchronously to short-lived events, as shown by increments in the planktonic d18O record, triggering quick reinforcements of the deep water circulation. Overall, these results highlight the sensitivity of the WMDW to rapid climate change which in the recent past were likely induced by oceanographic and atmospheric reorganizations in the North Atlantic region. : Parts of the high resolution record (0-12 ka) have been published in Frigola et al. (2007). |
format |
Article in Journal/Newspaper |
author |
Frigola, Jaime Moreno, Ana Cacho, Isabel Canals, Miquel Sierro, Francisco Javier Flores, José-Abel Grimalt, Joan O |
author_facet |
Frigola, Jaime Moreno, Ana Cacho, Isabel Canals, Miquel Sierro, Francisco Javier Flores, José-Abel Grimalt, Joan O |
author_sort |
Frigola, Jaime |
title |
High-resolution marine record of sediment core MD99-2343 in the Balearic Sea, supplement to: Frigola, Jaime; Moreno, Ana; Cacho, Isabel; Canals, Miquel; Sierro, Francisco Javier; Flores, José-Abel; Grimalt, Joan O (2008): Evidence of abrupt changes in Western Mediterranean Deep Water circulation during the last 50 kyr: A high-resolution marine record from the Balearic Sea. Quaternary International, 181(1), 88-104 |
title_short |
High-resolution marine record of sediment core MD99-2343 in the Balearic Sea, supplement to: Frigola, Jaime; Moreno, Ana; Cacho, Isabel; Canals, Miquel; Sierro, Francisco Javier; Flores, José-Abel; Grimalt, Joan O (2008): Evidence of abrupt changes in Western Mediterranean Deep Water circulation during the last 50 kyr: A high-resolution marine record from the Balearic Sea. Quaternary International, 181(1), 88-104 |
title_full |
High-resolution marine record of sediment core MD99-2343 in the Balearic Sea, supplement to: Frigola, Jaime; Moreno, Ana; Cacho, Isabel; Canals, Miquel; Sierro, Francisco Javier; Flores, José-Abel; Grimalt, Joan O (2008): Evidence of abrupt changes in Western Mediterranean Deep Water circulation during the last 50 kyr: A high-resolution marine record from the Balearic Sea. Quaternary International, 181(1), 88-104 |
title_fullStr |
High-resolution marine record of sediment core MD99-2343 in the Balearic Sea, supplement to: Frigola, Jaime; Moreno, Ana; Cacho, Isabel; Canals, Miquel; Sierro, Francisco Javier; Flores, José-Abel; Grimalt, Joan O (2008): Evidence of abrupt changes in Western Mediterranean Deep Water circulation during the last 50 kyr: A high-resolution marine record from the Balearic Sea. Quaternary International, 181(1), 88-104 |
title_full_unstemmed |
High-resolution marine record of sediment core MD99-2343 in the Balearic Sea, supplement to: Frigola, Jaime; Moreno, Ana; Cacho, Isabel; Canals, Miquel; Sierro, Francisco Javier; Flores, José-Abel; Grimalt, Joan O (2008): Evidence of abrupt changes in Western Mediterranean Deep Water circulation during the last 50 kyr: A high-resolution marine record from the Balearic Sea. Quaternary International, 181(1), 88-104 |
title_sort |
high-resolution marine record of sediment core md99-2343 in the balearic sea, supplement to: frigola, jaime; moreno, ana; cacho, isabel; canals, miquel; sierro, francisco javier; flores, josé-abel; grimalt, joan o (2008): evidence of abrupt changes in western mediterranean deep water circulation during the last 50 kyr: a high-resolution marine record from the balearic sea. quaternary international, 181(1), 88-104 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2008 |
url |
https://dx.doi.org/10.1594/pangaea.759537 https://doi.pangaea.de/10.1594/PANGAEA.759537 |
long_lat |
ENVELOPE(-62.300,-62.300,-64.083,-64.083) |
geographic |
Moreno |
geographic_facet |
Moreno |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://dx.doi.org/10.1016/j.quaint.2007.06.016 https://dx.doi.org/10.1029/2006pa001307 https://dx.doi.org/10.1029/2004pa001051 |
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.759537 https://doi.org/10.1016/j.quaint.2007.06.016 https://doi.org/10.1029/2006pa001307 https://doi.org/10.1029/2004pa001051 |
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