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...
| Main Authors: | , , , , , , |
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| Format: | Dataset |
| Language: | English |
| Published: |
PANGAEA
2010
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.1594/pangaea.788451 https://doi.pangaea.de/10.1594/PANGAEA.788451 |
| Summary: | 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 ... : Age is given in calendar years BP.Data were obtained within the framework of the ERC StG ICEPROXY project (Grant number: 203441) and ANR CLIMICE (ANR-08-CEXC-012-01), provided for the data compilation of the Past4Future Project. Core MD03-2601 was retrieved during Images X cruise with the logistic support of IPEV-TAAF. ... |
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