Ratio of Diene/Triene of sediment core MD03-2601
Micropaleontological and biomarker data from two high-accumulation marine sites from the Coastal and Continental Shelf Zone (CCSZ) off East Antarctica (Adélie Land at w140°E and eastern Prydz Bay at w77°E) are used to reconstruct Holocene changes in sea ice and wind stress at the basin-wide scale. T...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.788451 2023-05-15T13:55:15+02:00 Ratio of Diene/Triene of sediment core MD03-2601 Denis, Delphine Crosta, Xavier Barbara, Loïc Massé, Guillaume Renssen, Hans Ther, Olivier Giraudeau, Jacques LATITUDE: -66.051200 * LONGITUDE: 138.557200 * DATE/TIME START: 2003-02-08T08:51:00 * DATE/TIME END: 2003-02-08T08:51:00 * MINIMUM DEPTH, sediment/rock: 0.03 m * MAXIMUM DEPTH, sediment/rock: 39.92 m 2010-09-11 text/tab-separated-values, 135 data points https://doi.pangaea.de/10.1594/PANGAEA.788451 https://doi.org/10.1594/PANGAEA.788451 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.788451 https://doi.org/10.1594/PANGAEA.788451 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Denis, Delphine; Crosta, Xavier; Barbara, Loïc; Massé, Guillaume; Renssen, Hans; Ther, Olivier; Giraudeau, Jacques (2010): Sea ice and wind variability during the Holocene in East Antarctica: insight on middleehigh latitude coupling. Quaternary Science Reviews, 29, 3709-3719, https://doi.org/10.1016/j.quascirev.2010.08.007 AGE CALYPSO Calypso Corer DEPTH sediment/rock Diene/Triene highly branched isoprenois ratio IMAGES X - CADO Marion Dufresne (1995) MD032601 MD03-2601 MD130 Southern Ocean Dataset 2010 ftpangaea https://doi.org/10.1594/PANGAEA.788451 https://doi.org/10.1016/j.quascirev.2010.08.007 2023-01-20T08:55:14Z Micropaleontological and biomarker data from two high-accumulation marine sites from the Coastal and Continental Shelf Zone (CCSZ) off East Antarctica (Adélie Land at w140°E and eastern Prydz Bay at w77°E) are used to reconstruct Holocene changes in sea ice and wind stress at the basin-wide scale. These data demonstrate congruent increase in sea-ice concentration/persistence and wind stress-related sea-surface turbulence in the two regions since 7 cal ka BP, with a particularly strong signal since 4.5 - 3.5 cal ka BP. Comparison of these high latitude records with sea ice and turbulence records from the southern mid-latitudes highlights distinctive climatic evolutions according to the different latitudinal bands. Sea-ice persistence and turbulence increase in East Antarctica CCSZ are opposite to sea-surface warming and sea-ice retreat recorded after 4.5 - 3.5 cal ka BP in the East Atlantic and Indian sector between 55 and 45°S. At the same period, paleodata suggest SST cooling in all major coastal upwelling systems of the southern hemisphere, caused by the northward transport of subpolar surface waters as a response to southern Westerlies reinforcement. We therefore propose, as suggested for the northern hemisphere, that Holocene changes in the latitudinal insolation gradient, primarily forced by obliquity and precession and amplified by sea-ice and glacial-ice expansions in the Antarctic realm, are responsible for the observed contrasted latitudinal patterns of southern latitudes. Dataset Antarc* Antarctic Antarctica East Antarctica Prydz Bay Sea ice Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Southern Ocean The Antarctic East Antarctica Prydz Bay Indian ENVELOPE(138.557200,138.557200,-66.051200,-66.051200) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AGE CALYPSO Calypso Corer DEPTH sediment/rock Diene/Triene highly branched isoprenois ratio IMAGES X - CADO Marion Dufresne (1995) MD032601 MD03-2601 MD130 Southern Ocean |
spellingShingle |
AGE CALYPSO Calypso Corer DEPTH sediment/rock Diene/Triene highly branched isoprenois ratio IMAGES X - CADO Marion Dufresne (1995) MD032601 MD03-2601 MD130 Southern Ocean Denis, Delphine Crosta, Xavier Barbara, Loïc Massé, Guillaume Renssen, Hans Ther, Olivier Giraudeau, Jacques Ratio of Diene/Triene of sediment core MD03-2601 |
topic_facet |
AGE CALYPSO Calypso Corer DEPTH sediment/rock Diene/Triene highly branched isoprenois ratio IMAGES X - CADO Marion Dufresne (1995) MD032601 MD03-2601 MD130 Southern Ocean |
description |
Micropaleontological and biomarker data from two high-accumulation marine sites from the Coastal and Continental Shelf Zone (CCSZ) off East Antarctica (Adélie Land at w140°E and eastern Prydz Bay at w77°E) are used to reconstruct Holocene changes in sea ice and wind stress at the basin-wide scale. These data demonstrate congruent increase in sea-ice concentration/persistence and wind stress-related sea-surface turbulence in the two regions since 7 cal ka BP, with a particularly strong signal since 4.5 - 3.5 cal ka BP. Comparison of these high latitude records with sea ice and turbulence records from the southern mid-latitudes highlights distinctive climatic evolutions according to the different latitudinal bands. Sea-ice persistence and turbulence increase in East Antarctica CCSZ are opposite to sea-surface warming and sea-ice retreat recorded after 4.5 - 3.5 cal ka BP in the East Atlantic and Indian sector between 55 and 45°S. At the same period, paleodata suggest SST cooling in all major coastal upwelling systems of the southern hemisphere, caused by the northward transport of subpolar surface waters as a response to southern Westerlies reinforcement. We therefore propose, as suggested for the northern hemisphere, that Holocene changes in the latitudinal insolation gradient, primarily forced by obliquity and precession and amplified by sea-ice and glacial-ice expansions in the Antarctic realm, are responsible for the observed contrasted latitudinal patterns of southern latitudes. |
format |
Dataset |
author |
Denis, Delphine Crosta, Xavier Barbara, Loïc Massé, Guillaume Renssen, Hans Ther, Olivier Giraudeau, Jacques |
author_facet |
Denis, Delphine Crosta, Xavier Barbara, Loïc Massé, Guillaume Renssen, Hans Ther, Olivier Giraudeau, Jacques |
author_sort |
Denis, Delphine |
title |
Ratio of Diene/Triene of sediment core MD03-2601 |
title_short |
Ratio of Diene/Triene of sediment core MD03-2601 |
title_full |
Ratio of Diene/Triene of sediment core MD03-2601 |
title_fullStr |
Ratio of Diene/Triene of sediment core MD03-2601 |
title_full_unstemmed |
Ratio of Diene/Triene of sediment core MD03-2601 |
title_sort |
ratio of diene/triene of sediment core md03-2601 |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.788451 https://doi.org/10.1594/PANGAEA.788451 |
op_coverage |
LATITUDE: -66.051200 * LONGITUDE: 138.557200 * DATE/TIME START: 2003-02-08T08:51:00 * DATE/TIME END: 2003-02-08T08:51:00 * MINIMUM DEPTH, sediment/rock: 0.03 m * MAXIMUM DEPTH, sediment/rock: 39.92 m |
long_lat |
ENVELOPE(138.557200,138.557200,-66.051200,-66.051200) |
geographic |
Antarctic Southern Ocean The Antarctic East Antarctica Prydz Bay Indian |
geographic_facet |
Antarctic Southern Ocean The Antarctic East Antarctica Prydz Bay Indian |
genre |
Antarc* Antarctic Antarctica East Antarctica Prydz Bay Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Prydz Bay Sea ice Southern Ocean |
op_source |
Supplement to: Denis, Delphine; Crosta, Xavier; Barbara, Loïc; Massé, Guillaume; Renssen, Hans; Ther, Olivier; Giraudeau, Jacques (2010): Sea ice and wind variability during the Holocene in East Antarctica: insight on middleehigh latitude coupling. Quaternary Science Reviews, 29, 3709-3719, https://doi.org/10.1016/j.quascirev.2010.08.007 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.788451 https://doi.org/10.1594/PANGAEA.788451 |
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.788451 https://doi.org/10.1016/j.quascirev.2010.08.007 |
_version_ |
1766261620673085440 |