The Southern Hemisphere at glacial terminations: insights from the Dome C ice core ...

• Published in: Journal of Micropalaeontology
• Main Authors: De Angelis, M., Sime, L., Lambert, Fabrice, Röthlisberger, R., Mudelsee, M., Udisti, R., Bigler, Matthias, Fischer, Hubertus, Hansson, M., Wolff, E. W., Masson-Delmotte, V.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2008
• Subjects: 530 Physics; Antarctic; Antarc*; Antarctica; EPICA; ice core; Sea ice
• Online Access: https://dx.doi.org/10.7892/boris.37305; http://boris.unibe.ch/37305/

The many different proxy records from the European Project for Ice Coring in Antarctica (EPICA) Dome C ice core allow for the first time a comparison of nine glacial terminations in great detail. Despite the fact that all terminations cover the transition from a glacial maximum into an interglacial, there are large differences between single terminations. For some terminations, Antarctic temperature increased only moderately, while for others, the amplitude of change at the termination was much larger. For the different terminations, the rate of change in temperature is more similar than the magnitude or duration of change. These temperature changes were accompanied by vast changes in dust and sea salt deposition all over Antarctica. Here we investigate the phasing between a South American dust proxy (non-sea-salt calcium flux, nssCa2+), a sea ice proxy (sea salt sodium flux, ssNa+) and a proxy for Antarctic temperature (deuterium, δD). In particular, we look into whether a similar sequence of events applies ...