Holocene electrical and chemical measurements from the EPICA–Dome C ice core

The comparison between electric (electric-conductivity measurement (ECM) and dielectric profiling (DEP)) and chemical (sulphate and chloride) depth profiles along the first 400 m of the EPICA-Dome C ice core revealed a very good fit, especially for peaks related to volcanic emissions. From the comparison between these profiles, a dominant contribution of sulphuric acid to the ionic balance of Antarctic ice for the Holocene was confirmed. A progressive increase with depth was observed for chloride concentrations, showing a change of relative contribution between sulphate and chloride. A higher increase of chloride was evident between 270 and 360 m depth, probably due to a change in source or transport processes or to an increase of the annual snow-accumulation rate. The DEP, ECM and sulphate ice signatures of Tambora (AD 1816) and El Chichon (?) (AD 1259) eruptions are described in detail. A characteristic peak series, due to HCl deposition, was identified at 103-109 m depth from the ECM, DEP and chloride profiles

Details

Publication status:
Published
Author(s):
Authors: Udisti, R., Becagli, S., Castellano, E., Mulvaney, R. ORCID, Schwander, J., Torcini, S., Wolff, E.

On this site: Eric Wolff, Robert Mulvaney
Date:
1 January, 2000
Journal/Source:
Annals of Glaciology / 30
Page(s):
20-26
Digital Object Identifier (DOI):
https://doi.org/10.3189/172756400781820750