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

被引：46
|
作者：
Udisti, R [1 ]
Becagli, S
Castellano, E
Mulvaney, R
Schwander, J
Torcini, S
Wolff, E
机构：
[1] Univ Calabria, Dept Chem, I-87030 Arcavacata, Cosenza, Italy
[2] Univ Florence, Dept Publ Hlth & Environm Analyt Chem, I-50121 Florence, Italy
[3] British Antarctic Survey, NERC, Cambridge CB3 0ET, England
[4] Univ Bern, Inst Phys, CH-3012 Bern, Switzerland
[5] CRE Casaccia, AMB, Ente Nazl Energia & Ambiente, I-00100 Rome, Italy
来源：
ANNALS OF GLACIOLOGY, VOL 30, 2000 | 2000年 / 30卷
关键词：
D O I：
10.3189/172756400781820750
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
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 Fl 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.
引用
收藏
页码：20 / 26
页数：7
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