Common millennial-scale variability of Antarctic and Southern Ocean temperatures during the past 5000 years reconstructed from the EPICA Dome C ice core

Measurements of the two water stable isotopes (dD and d 18 O) along EPICA (European Project for Ice Coring in Antarctica) Dome C ice core are combined with simple isotopic modelling (distillation models) to reconstruct the variability of both the site temperature (East Antarctica) and the moisture s...

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Bibliographic Details
Published in:The Holocene
Main Authors: Masson-Delmotte, V., Stenni, B., Jouzel, J.
Format: Article in Journal/Newspaper
Language:English
Published: SAGE Publications 2004
Subjects:
Paleontology
Earth-Surface Processes
Ecology
Archeology
Global and Planetary Change
Antarctic
Southern Ocean
East Antarctica
Indian
Antarc*
Antarctica
EPICA
ice core
Online Access:http://dx.doi.org/10.1191/0959683604hl697ft
http://journals.sagepub.com/doi/pdf/10.1191/0959683604hl697ft
Description
Summary:Measurements of the two water stable isotopes (dD and d 18 O) along EPICA (European Project for Ice Coring in Antarctica) Dome C ice core are combined with simple isotopic modelling (distillation models) to reconstruct the variability of both the site temperature (East Antarctica) and the moisture source temperature (nowadays probably the subantarctic Indian Ocean). We discuss the difference between the reconstructed site and source temperature pro” les with respect to the initial isotopic data. We show that (i) the early-Holocene optimum appears” rst in Antarctica and 800 years later in the Southern Ocean, and (ii) during the last 5000 years, the site and source temperatures co-vary at the centennial timescale. An 833-year periodicity is observed only on deuterium and site temperature and therefore probably of local origin.

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