Grain-size, lithic grains, foraminifera-derived and dinocyst-derived data of sediment core MD99-2281
The last glacial period was punctuated by abrupt climatic events with extrema known as Heinrich and Dansgaard-Oeschger events. These millennial events have been the subject of many paleoreconstructions and model experiments in the past decades, but yet the hydrological processes involved remain elus...
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Language: | English |
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PANGAEA
2015
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.857750 https://doi.org/10.1594/PANGAEA.857750 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.857750 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
63F/NL AGE CALYPSO Calypso Corer Counting <150 µm Counting >150 µm fraction DEPTH sediment/rock Dinoflagellate cyst per volume Faeroes Bank Foraminifera benthic planktic Grain size Mastersizer S Malvern Instrument Inc. mean IMAGES V Lithic grains Marion Dufresne (1995) Mass spectrometer Optima Micromass MD114 MD99-2281 Modern analog technique (MAT) Neogloboquadrina pachyderma sinistral δ18O Percentile 10 Percentile 50 Percentile 90 Ratio Sea surface salinity summer winter Sea surface temperature Subsurface temperature |
spellingShingle |
63F/NL AGE CALYPSO Calypso Corer Counting <150 µm Counting >150 µm fraction DEPTH sediment/rock Dinoflagellate cyst per volume Faeroes Bank Foraminifera benthic planktic Grain size Mastersizer S Malvern Instrument Inc. mean IMAGES V Lithic grains Marion Dufresne (1995) Mass spectrometer Optima Micromass MD114 MD99-2281 Modern analog technique (MAT) Neogloboquadrina pachyderma sinistral δ18O Percentile 10 Percentile 50 Percentile 90 Ratio Sea surface salinity summer winter Sea surface temperature Subsurface temperature Wary, Mélanie Eynaud, Frédérique Sabine, Christopher L Zaragosi, Sebastien Rossignol, Pascale E Malaizé, Bruno Palis, Edouard Zumaque, Jena Caulle, Clémence Penaud, Aurélie Michel, Elisabeth Charlier, Karine Grain-size, lithic grains, foraminifera-derived and dinocyst-derived data of sediment core MD99-2281 |
topic_facet |
63F/NL AGE CALYPSO Calypso Corer Counting <150 µm Counting >150 µm fraction DEPTH sediment/rock Dinoflagellate cyst per volume Faeroes Bank Foraminifera benthic planktic Grain size Mastersizer S Malvern Instrument Inc. mean IMAGES V Lithic grains Marion Dufresne (1995) Mass spectrometer Optima Micromass MD114 MD99-2281 Modern analog technique (MAT) Neogloboquadrina pachyderma sinistral δ18O Percentile 10 Percentile 50 Percentile 90 Ratio Sea surface salinity summer winter Sea surface temperature Subsurface temperature |
description |
The last glacial period was punctuated by abrupt climatic events with extrema known as Heinrich and Dansgaard-Oeschger events. These millennial events have been the subject of many paleoreconstructions and model experiments in the past decades, but yet the hydrological processes involved remain elusive. In the present work, high-resolution analyses were conducted on the 12-42 ka BP section of core MD99-2281 retrieved southwest of the Faeroe Islands, and combined with analyses conducted in two previous studies (Zumaque et al., 2012; Caulle et al., 2013). Such a multiproxy approach, coupling micropaleontological, geochemical and sedimentological analyses, allows us to track surface, subsurface, and deep hydrological processes occurring during these rapid climatic changes. Records indicate that the coldest episodes of the studied period (Greenland stadials and Heinrich stadials) were characterized by a strong stratification of surface waters. This surface stratification seems to have played a key role in the dynamics of subsurface and deep-water masses. Indeed, periods of high surface stratification are marked by a coupling of subsurface and deep circulations which sharply weaken at the beginning of stadials, while surface conditions progressively deteriorate throughout these cold episodes; conversely, periods of decreasing surface stratification (Greenland interstadials) are characterized by a coupling of surface and deep hydrological processes, with progressively milder surface conditions and gradual intensification of the deep circulation, while the vigor of the subsurface northward Atlantic flow remains constantly high. Our results also reveal different and atypical hydrological signatures during Heinrich stadials (HSs): while HS1 and HS4 exhibit a "usual" scheme with reduced overturning circulation, a relatively active North Atlantic circulation seems to have prevailed during HS2, and HS3 seems to have experienced a re-intensification of this circulation during the middle of the event. Our findings thus bring ... |
format |
Dataset |
author |
Wary, Mélanie Eynaud, Frédérique Sabine, Christopher L Zaragosi, Sebastien Rossignol, Pascale E Malaizé, Bruno Palis, Edouard Zumaque, Jena Caulle, Clémence Penaud, Aurélie Michel, Elisabeth Charlier, Karine |
author_facet |
Wary, Mélanie Eynaud, Frédérique Sabine, Christopher L Zaragosi, Sebastien Rossignol, Pascale E Malaizé, Bruno Palis, Edouard Zumaque, Jena Caulle, Clémence Penaud, Aurélie Michel, Elisabeth Charlier, Karine |
author_sort |
Wary, Mélanie |
title |
Grain-size, lithic grains, foraminifera-derived and dinocyst-derived data of sediment core MD99-2281 |
title_short |
Grain-size, lithic grains, foraminifera-derived and dinocyst-derived data of sediment core MD99-2281 |
title_full |
Grain-size, lithic grains, foraminifera-derived and dinocyst-derived data of sediment core MD99-2281 |
title_fullStr |
Grain-size, lithic grains, foraminifera-derived and dinocyst-derived data of sediment core MD99-2281 |
title_full_unstemmed |
Grain-size, lithic grains, foraminifera-derived and dinocyst-derived data of sediment core MD99-2281 |
title_sort |
grain-size, lithic grains, foraminifera-derived and dinocyst-derived data of sediment core md99-2281 |
publisher |
PANGAEA |
publishDate |
2015 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.857750 https://doi.org/10.1594/PANGAEA.857750 |
op_coverage |
LATITUDE: 60.341833 * LONGITUDE: -9.455667 * DATE/TIME START: 1999-08-01T00:00:00 * DATE/TIME END: 1999-08-01T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.400 m * MAXIMUM DEPTH, sediment/rock: 21.700 m |
long_lat |
ENVELOPE(-9.455667,-9.455667,60.341833,60.341833) |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Dansgaard-Oeschger events Greenland Neogloboquadrina pachyderma North Atlantic |
genre_facet |
Dansgaard-Oeschger events Greenland Neogloboquadrina pachyderma North Atlantic |
op_source |
Supplement to: Wary, Mélanie; Eynaud, Frédérique; Sabine, Christopher L; Zaragosi, Sebastien; Rossignol, Pascale E; Malaizé, Bruno; Palis, Edouard; Zumaque, Jena; Caulle, Clémence; Penaud, Aurélie; Michel, Elisabeth; Charlier, Karine (2015): Stratification of surface waters during the last glacial millennial climatic events: a key factor in subsurface and deep-water mass dynamics. Climate of the Past, 11(11), 1507-1525, https://doi.org/10.5194/cp-11-1507-2015 |
op_relation |
Caulle, Clémence; Penaud, Aurélie; Eynaud, Frédérique; Zaragosi, Sebastien; Roche, Didier M; Michel, Elisabeth; Boulay, Sebastien; Richter, Thomas (2013): Sea-surface hydrographical conditions off South Faeroes and within the North-Eastern North Atlantic through MIS 2: the response of dinocysts. Journal of Quaternary Science, 28(3), 217-228, https://doi.org/10.1002/jqs.2601 Zumaque, Jena; Eynaud, Frédérique; Zaragosi, Sebastien; Marret, Fabienne; Matsuzaki, Hiroyuki; Kissel, Catherine; Roche, Didier M; Malaizé, Bruno; Michel, Elisabeth; Billy, Isabelle; Richter, Thomas; Palis, Edouard (2012): An ocean–ice coupled response during the last glacial: a view from a marine isotopic stage 3 record south of the Faeroe Shetland Gateway. Climate of the Past, 8(6), 1997-2017, https://doi.org/10.5194/cp-8-1997-2012 https://doi.pangaea.de/10.1594/PANGAEA.857750 https://doi.org/10.1594/PANGAEA.857750 |
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.857750 https://doi.org/10.5194/cp-11-1507-2015 https://doi.org/10.1002/jqs.2601 https://doi.org/10.5194/cp-8-1997-2012 |
_version_ |
1766395978505519104 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.857750 2023-05-15T16:00:06+02:00 Grain-size, lithic grains, foraminifera-derived and dinocyst-derived data of sediment core MD99-2281 Wary, Mélanie Eynaud, Frédérique Sabine, Christopher L Zaragosi, Sebastien Rossignol, Pascale E Malaizé, Bruno Palis, Edouard Zumaque, Jena Caulle, Clémence Penaud, Aurélie Michel, Elisabeth Charlier, Karine LATITUDE: 60.341833 * LONGITUDE: -9.455667 * DATE/TIME START: 1999-08-01T00:00:00 * DATE/TIME END: 1999-08-01T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.400 m * MAXIMUM DEPTH, sediment/rock: 21.700 m 2015-02-01 text/tab-separated-values, 4046 data points https://doi.pangaea.de/10.1594/PANGAEA.857750 https://doi.org/10.1594/PANGAEA.857750 en eng PANGAEA Caulle, Clémence; Penaud, Aurélie; Eynaud, Frédérique; Zaragosi, Sebastien; Roche, Didier M; Michel, Elisabeth; Boulay, Sebastien; Richter, Thomas (2013): Sea-surface hydrographical conditions off South Faeroes and within the North-Eastern North Atlantic through MIS 2: the response of dinocysts. Journal of Quaternary Science, 28(3), 217-228, https://doi.org/10.1002/jqs.2601 Zumaque, Jena; Eynaud, Frédérique; Zaragosi, Sebastien; Marret, Fabienne; Matsuzaki, Hiroyuki; Kissel, Catherine; Roche, Didier M; Malaizé, Bruno; Michel, Elisabeth; Billy, Isabelle; Richter, Thomas; Palis, Edouard (2012): An ocean–ice coupled response during the last glacial: a view from a marine isotopic stage 3 record south of the Faeroe Shetland Gateway. Climate of the Past, 8(6), 1997-2017, https://doi.org/10.5194/cp-8-1997-2012 https://doi.pangaea.de/10.1594/PANGAEA.857750 https://doi.org/10.1594/PANGAEA.857750 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Wary, Mélanie; Eynaud, Frédérique; Sabine, Christopher L; Zaragosi, Sebastien; Rossignol, Pascale E; Malaizé, Bruno; Palis, Edouard; Zumaque, Jena; Caulle, Clémence; Penaud, Aurélie; Michel, Elisabeth; Charlier, Karine (2015): Stratification of surface waters during the last glacial millennial climatic events: a key factor in subsurface and deep-water mass dynamics. Climate of the Past, 11(11), 1507-1525, https://doi.org/10.5194/cp-11-1507-2015 63F/NL AGE CALYPSO Calypso Corer Counting <150 µm Counting >150 µm fraction DEPTH sediment/rock Dinoflagellate cyst per volume Faeroes Bank Foraminifera benthic planktic Grain size Mastersizer S Malvern Instrument Inc. mean IMAGES V Lithic grains Marion Dufresne (1995) Mass spectrometer Optima Micromass MD114 MD99-2281 Modern analog technique (MAT) Neogloboquadrina pachyderma sinistral δ18O Percentile 10 Percentile 50 Percentile 90 Ratio Sea surface salinity summer winter Sea surface temperature Subsurface temperature Dataset 2015 ftpangaea https://doi.org/10.1594/PANGAEA.857750 https://doi.org/10.5194/cp-11-1507-2015 https://doi.org/10.1002/jqs.2601 https://doi.org/10.5194/cp-8-1997-2012 2023-01-20T09:06:54Z The last glacial period was punctuated by abrupt climatic events with extrema known as Heinrich and Dansgaard-Oeschger events. These millennial events have been the subject of many paleoreconstructions and model experiments in the past decades, but yet the hydrological processes involved remain elusive. In the present work, high-resolution analyses were conducted on the 12-42 ka BP section of core MD99-2281 retrieved southwest of the Faeroe Islands, and combined with analyses conducted in two previous studies (Zumaque et al., 2012; Caulle et al., 2013). Such a multiproxy approach, coupling micropaleontological, geochemical and sedimentological analyses, allows us to track surface, subsurface, and deep hydrological processes occurring during these rapid climatic changes. Records indicate that the coldest episodes of the studied period (Greenland stadials and Heinrich stadials) were characterized by a strong stratification of surface waters. This surface stratification seems to have played a key role in the dynamics of subsurface and deep-water masses. Indeed, periods of high surface stratification are marked by a coupling of subsurface and deep circulations which sharply weaken at the beginning of stadials, while surface conditions progressively deteriorate throughout these cold episodes; conversely, periods of decreasing surface stratification (Greenland interstadials) are characterized by a coupling of surface and deep hydrological processes, with progressively milder surface conditions and gradual intensification of the deep circulation, while the vigor of the subsurface northward Atlantic flow remains constantly high. Our results also reveal different and atypical hydrological signatures during Heinrich stadials (HSs): while HS1 and HS4 exhibit a "usual" scheme with reduced overturning circulation, a relatively active North Atlantic circulation seems to have prevailed during HS2, and HS3 seems to have experienced a re-intensification of this circulation during the middle of the event. Our findings thus bring ... Dataset Dansgaard-Oeschger events Greenland Neogloboquadrina pachyderma North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Greenland ENVELOPE(-9.455667,-9.455667,60.341833,60.341833) |