• Main Authors: Barbara Delmonte, Æ Jean, Robert Petit, Gerhard Krinner, Æ Valter Maggi, Æ Jean Jouzel, Roberto Udisti
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2004
• Subjects: East Antarctica; Antarc*; Antarctica; EPICA; ice core
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.504.2574; http://www.scar.org/awards/fellowships/delmonte/Delmonte_2005.pdf

Abstract Two Holocene ice core records from East Antarctica (Vostok and EPICA-Dome C) were analysed for dust concentration and size distribution at a tem-poral resolution of 1 sample per 50 years. A series of volcanic markers randomly distributed over the com-mon part of the ice cores (from 9.8 to 3.5 kyear BP) ensures accurate relative dating (±33 years). Dust-size records from the two sites display oscillations structured in cycles with sub-millennial and secular scale frequen-cies that are apparently asynchronous. The power spectra of the composite sum (S) of the two dust-size records display spectral energy mostly for 150- to 500-year periodicities. On the other hand, the 200-year band is common to both records and the 200 year compo-nents of the two sites are out-of-phase (100-year lead or