Friday, 31 August 2007 - 1:50 PM
5.P1.C-2
The heterogenity of Holocene climatic and environmental history along the East Antarctic coastal regions
Bernd Wagner and Martin Melles. Institute for Geology and Mineralogy, University of Cologne, Zuelpicher Str. 49a, Cologne, 50674, Germany
The reconstruction of the climatic and environmental history along the East Antarctic coastal regions is mainly based on investigations of geomorphological features and of biological proxies in lacustrine and marine sediment sequences. Although some records show consistency in the onset and duration of warm and cold periods after deglaciation, others indicate significant differences even in the same area. These differences may partly be explained by dating uncertainties, overprinting of local factors, or possibly even misinterpretations of the proxies used. However, a comparison with climate histories deduced from ice core records reveals that the differences must be at least partly caused by local effects and small-scale variations, which still need to be better understood and demonstrate the need of further research.