Assessing the uncertainties of an ice core time scale based on orbital tuning of air content records: a case study of the Dome Fuji (Antarctica) ice core
Abstract
We have further elaborated an algorithm for implementing a new method of ice core dating, which is based on the link between air content of ice and local insolation (Raynaud et al., 2007).
Our study proves that continuous wavelet transform (CWT) is the most suitable tool for tuning the preliminary dated air content records on the calculated local insolation time series. The uncertainties associated with applying this technique to the experimental air content records have been thoroughly investigated. The new dating method was for the fi rst time applied to constructing the orbital time scale for the Dome Fuji ice core, using a composite air content record obtained from this site. A standard error of the thus obtained timescale was evaluated not to exceed ±2.1 ka, that is, close to the standard error of the optimized multi-proxy, multi-site AICC2012 chronology, previously developed for fi ve drilling sites in Antarctica and Greenland.
About the Authors
A. A. Skakun
ГНЦ РФ Арктический и антарктический научно-исследовательский институт
Russian Federation
Russian Federation
V. Ya. Lipenkov
ГНЦ РФ Арктический и антарктический научно-исследовательский институт
Russian Federation
Russian Federation
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For citations:
Skakun A.A., Lipenkov V.Ya. Assessing the uncertainties of an ice core time scale based on orbital tuning of air content records: a case study of the Dome Fuji (Antarctica) ice core. Arctic and Antarctic Research. 2016;(4):14-29. (In Russ.)
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