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Rapid oscillations in Vostok and GRIP Ice Cores
Author(s) -
Yiou P.,
Jouzel J.,
Johnsen S.,
Rögnvaldsson Ö. E.
Publication year - 1995
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/95gl02014
Subject(s) - ice core , geology , ice sheet , climatology , series (stratigraphy) , geophysics , ice sheet model , ice stream , cryosphere , sea ice , paleontology , oceanography
We investigate the spectral properties of climatic times series derived from two recent ice cores in Greenland and East Antarctica. We find that the signals behave in a similar way in the high frequency part of their spectra. The rapid oscillations found in the GRIP ice core were closely correlated to Heinrich Events. A comparable spectral feature is detected in the Vostok ice core. We discuss the possibilities of connections between the two hemispheres and proper ice sheet oscillations in the light of simple oscillating climate models.