Numéro
J. Phys. Colloques
Volume 48, Numéro C1, Mars 1987
VIIth Symposium on the Physics and Chemistry of Ice
Page(s) C1-697 - C1-697
DOI https://doi.org/10.1051/jphyscol:19871113
VIIth Symposium on the Physics and Chemistry of Ice

J. Phys. Colloques 48 (1987) C1-697-C1-697

DOI: 10.1051/jphyscol:19871113

THE USE OF THE ECM METHOD AS AN INDICATOR OF HIGH DUST CONCENTRATIONS IN POLAR ICE CORES

C.H. HAMMER

Department of Glaciology, Geophysical Institute, University of Copenhagen, DK-2200 Copenhagen, Denmark


Abstract
ECM*, pH and dust concentration data obtained on the Dye 3, Camp Century and Byrd ice cores suggest, that the ECM data may be used to indicate high dust concentrations in polar ice cores i.e. higher than approx. 300 µg/kg ice. The dust concentration can only be inferred in a semi-quantitative way as the calibration curve shows a high scatter, especially for the internal 300-500 µg/kg. Various data from the 3 cores will be presented in order to illustrate the potential and limitations.