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B. Delmonte J. R. Petit K. K. Andersen I. Basile-Doelsch V. Maggi V. Ya Lipenkov
 

Summary: B. Delmonte ∆ J. R. Petit ∆ K. K. Andersen
I. Basile-Doelsch ∆ V. Maggi ∆ V. Ya Lipenkov
Dust size evidence for opposite regional atmospheric circulation
changes over east Antarctica during the last climatic transition
Received: 18 September 2003 / Accepted: 2 April 2004 / Published online: 5 August 2004
” Springer-Verlag 2004
Abstract Three east Antarctic ice cores (Dome B,
EPICA-Dome C and Komsomolskaia) give evidence for
a uniform dust input to the polar plateau during the last
glacial maximum (LGM)/Holocene transition (20 to
10 kyr BP) and the 87
Sr/86
Sr versus 143
Nd/144
Nd isotopic
signature of the mineral particles highlights a common
provenance from southern South America at that time.
However, the size distribution of dust from the three ice
cores highlights important differences within the east
Antarctic during the LGM and shows clearly opposite

  

Source: Andersen, Katrine Krogh - Niels Bohr Institute for Astronomy, Physics and Geophysics, KÝbenhavns Universitets

 

Collections: Geosciences; Environmental Sciences and Ecology