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SYMS: Symposium New methods of mass spectroscopy and their application in the environmental science

SYMS 1: Session I

SYMS 1.2: Invited Talk

Thursday, March 11, 2010, 11:00–11:30, A 001

What do cosmogenic radionuclides in polar ice cores tell us? — •Juerg Beer — Eawag, CH-8600 Duebendorf

The continuous progress in accelerator mass spectrometry during the past decades made it possible to measure cosmogenic radionuclides such as 10Be and 36Cl in polar ice cores with a high temporal resolution of a few years over the past about 100,000 years. This data reveals a large variety of unprecedented information on the long-term variability of the solar activity and the geomagnetic dipole field and on transport processes within the atmosphere. After an overview of the present status new future applications will be discussed.