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On the Occurrence of Annual Layers in Dome Fuji Ice Core Early Holocene Ice : Volume 11, Issue 2 (27/03/2015)

By Svensson, A.

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Book Id: WPLBN0004006871
Format Type: PDF Article :
File Size: Pages 26
Reproduction Date: 2015

Title: On the Occurrence of Annual Layers in Dome Fuji Ice Core Early Holocene Ice : Volume 11, Issue 2 (27/03/2015)  
Author: Svensson, A.
Volume: Vol. 11, Issue 2
Language: English
Subject: Science, Climate, Past
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Braun, M., Fujita, S., Bigler, M., Steffensen, J. P., Gkinis, V., Kjær, H. A.,...Hirabayashi, M. (2015). On the Occurrence of Annual Layers in Dome Fuji Ice Core Early Holocene Ice : Volume 11, Issue 2 (27/03/2015). Retrieved from

Description: Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark. Whereas ice cores from high accumulation sites in coastal Antarctica clearly demonstrate annual layering, it is debated whether a seasonal signal is also preserved in ice cores from lower accumulation sites further inland and particularly on the East Antarctic Plateau. In this study, we examine five metres of early Holocene ice from the Dome Fuji (DF) ice core in high temporal resolution by continuous flow analysis. The ice was continuously analyzed for concentrations of dust, sodium, ammonium, liquid conductivity, and water isotopic composition. Furthermore, a dielectric profiling was performed on the solid ice. In most of the analyzed ice, the multi-parameter impurity dataset appears to resolve the seasonal variability although the identification of annual layers is not always unambiguous. A layer counting based on the same principles as those previously applied to the Greenland NGRIP and the Antarctic EPICA Dronning Maud Land (EDML) ice cores leads to a mean annual layer thickness for the DF ice of 3.0 ± 0.3 cm that compares well to existing estimates. The measured DF section is linked to the EDML ice core through a characteristic pattern of three significant acidity peaks that are present in both cores. The corresponding section of the EDML ice core has recently been dated by annual layer counting and the number of years identified independently in the two cores agree within error estimates. We therefore conclude that, to first order, the annual signal is preserved in this section of the DF core. This case study demonstrates the feasibility of determining annually deposited strata on the central Eastern Antarctic Plateau. It also opens the possibility of resolving annual layers in the Eemian section of the DF ice core where the accumulation is estimated to have been greater than in the Holocene.

On the occurrence of annual layers in Dome Fuji ice core early Holocene ice

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