Rapid oscillations in Vostok and GRIP ice cores

International audience 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 w...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Yiou, P., Jouzel, J., Johnsen, S., Rögnvaldsson, Ö.
Other Authors: Laboratoire de Modélisation du Climat et de l'Environnement (LMCE)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 1995
Subjects:
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces
environment
East Antarctica
Greenland
Antarc*
Antarctica
GRIP
ice core
Ice Sheet
Online Access:https://hal.archives-ouvertes.fr/hal-03334868
https://hal.archives-ouvertes.fr/hal-03334868/document
https://hal.archives-ouvertes.fr/hal-03334868/file/grl1995Yiou2179.pdf
https://doi.org/10.1029/95GL02014
Description
Summary:International audience 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.

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