| Registro completo |
| Provedor de dados: |
ArchiMer
|
| País: |
France
|
| Título: |
Holocene subsurface temperature variability in the eastern Antarctic continental margin
|
| Autores: |
Kim, Jung-hyun
Crosta, Xavier
Willmott, Veronica
Renssen, Hans
Bonnin, Jerome
Helmke, Peer
Schouten, Stefan
Damste, Jaap S. Sinninghe
|
| Data: |
2012-03
|
| Ano: |
2012
|
| Resumo: |
We reconstructed subsurface (similar to 45-200 m water depth) temperature variability in the eastern Antarctic continental margin during the late Holocene, using an archaeal lipid-based temperature proxy (TEX86 L). Our results reveal that subsurface temperature changes were probably positively coupled to the variability of warmer, nutrient-rich Modified Circumpolar Deep Water (MCDW, deep water of the Antarctic circumpolar current) intrusion onto the continental shelf. The TEX86 L record, in combination with previously published climatic records, indicates that this coupling was probably related to the thermohaline circulation, seasonal variability in sea ice extent, sea temperature, and wind associated with high frequency climate dynamics at low-latitudes such as internal El Nino Southern Oscillation (ENSO). This in turn suggests a linkage between centennial ENSO-like variability at low-latitudes and intrusion variability of MCDW into the eastern Antarctic continental shelf, which might have further impact on ice sheet evolution.
|
| Tipo: |
Text
|
| Idioma: |
Inglês
|
| Identificador: |
https://archimer.ifremer.fr/doc/00265/37669/36859.pdf
DOI:10.1029/2012GL051157
https://archimer.ifremer.fr/doc/00265/37669/
|
| Editor: |
Amer Geophysical Union
|
| Formato: |
application/pdf
|
| Fonte: |
Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2012-03 , Vol. 39 , N. L06705 , P. 1-6
|
| Direitos: |
Copyright 2012 by the American Geophysical Union.
info:eu-repo/semantics/openAccess
restricted use
|
|
