An improved north–south synchronization of ice core records around the 41 kyr 10Be peak

An improved north–south synchronization of ice core records around the 41 kyr 10Be peak

, Jouzel, J., Landais, A., Petit, J.-R., Lipenkov, V. Y., Beer, J., Synal, H.-A., Oerter, Hans, Johnsen, S. J., Steffensen, J. P., Svensson, A. and Yiou, F. ;

Contact

Hans.Oerter [ at ] awi.de

Abstract

Using new high-resolution 10Be measurements in the NGRIP, EDML and Vostok ice cores, together with previously published data from EDC, we present an improved synchronization between Greenland and Antarctic ice cores during the Laschamp geomagnetic excursion ~41 kyr ago. We estimate the precision of this synchronization to be ±20 years, an order of magnitude better than previous work. We discuss the implications of this new synchronization for making improved estimates of the depth difference between ice and enclosed gas of the same age (Δdepth), difference between age of ice and enclosed gas at the same depth (Δage) in the EDC and EDML ice cores, spectral properties of the 10Be profiles and phasing between Dansgaard–Oeschger-10 (in NGRIP) and AIM-10 (in EDML and EDC).

Item Type

Article

Authors

Raisbeck, G., Cauquoin, Alexandre

, Jouzel, J., Landais, A., Petit, J.-R., Lipenkov, V. Y., Beer, J., Synal, H.-A., Oerter, Hans, Johnsen, S. J., Steffensen, J. P., Svensson, A. and Yiou, F. ;

Divisions

AWI Organizations > Geosciences > Glaciology

Primary Division

Organizations > AWI Organizations > Geosciences

Programs

Helmholtz Research Programs > PACES II (2014-2020) > TOPIC 3: The earth system from a polar perspective > WP 3.1: Circumpolar climate variability and global teleconnections at seasonal to orbital time scales

Primary Topic

Helmholtz Programs > Helmholtz Research Programs > PACES II (2014-2020) > TOPIC 3: The earth system from a polar perspective > WP 3.1: Circumpolar climate variability and global teleconnections at seasonal to orbital time scales

Publication Status

Published

Eprint ID

44188

DOI 10.5194/cp-13-217-2017

Cite as

Raisbeck, G. , Cauquoin, A. , Jouzel, J. , Landais, A. , Petit, J. R. , Lipenkov, V. Y. , Beer, J. , Synal, H. A. , Oerter, H. , Johnsen, S. J. , Steffensen, J. P. , Svensson, A. and Yiou, F. (2017): An improved north–south synchronization of ice core records around the 41 kyr 10Be peak , Climate of the Past, 13 , pp. 217-229 . doi: 10.5194/cp-13-217-2017