Aeolian dust and chemistry records from the EDML and EDC ice cores

To improve quantitative interpretation of ice core aeolian dust records a systematic methodical comparison has been made involving methods of water-insoluble particle counting (Coulter Counter and laser-sensing particle detector), soluble ions (ion chromatography, IC, and continuous flow analysis, C...

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Bibliographic Details
Main Authors: Ruth, Urs, Barbante, Carlo, Bigler, Matthias, Delmonte, Barbara, Fischer, Hubertus, Gabrielli, Paolo, Gaspari, Vania, Kaufmann, Patrik R, Lambert, Fabrice, Maggi, Valter, Marino, Federica, Petit, Jean-Robert, Udisti, Roberto, Wagenbach, Dietmar, Wegner, Anna, Wolff, Eric W
Format: Dataset
Language:English
Published: PANGAEA 2008
Subjects:
Dome C
Antarctica
EDC
EDML
EDRILL
EPICA
EPICA-Campaigns
EPICA Dome C
EPICA drill
EPICA Dronning Maud Land
DML28C01_00
European Project for Ice Coring in Antarctica
ICEDRILL
Ice drill
Kohnen Station
Dronning Maud Land
Kohnen
Coulter
Antarc*
ice core
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.690364
https://doi.org/10.1594/PANGAEA.690364
Description
Summary:To improve quantitative interpretation of ice core aeolian dust records a systematic methodical comparison has been made involving methods of water-insoluble particle counting (Coulter Counter and laser-sensing particle detector), soluble ions (ion chromatography, IC, and continuous flow analysis, CFA), elemental analysis (inductively coupled plasma mass spectroscopy, ICP-MS, at pH 1 and after full acid digestion), and water-insoluble elemental analysis (proton induced X-ray emission, PIXE). Ice core samples covering the last deglaciation have been used from the EPICA Dome C (EDC) and the EPICA Dronning Maud Land (EDML) ice cores. All methods correlate very well amongst each other. The ratios of glacial age concentrations to Holocene concentrations, which are typically a factor ~100, differ significantly between the methods, but differences are limited to a factor < 2 for most methods with insoluble particles showing the largest change. The recovery of ICP-MS measurements depends on the digestion method and is different for different elements and during different climatic periods. EDC and EDML samples have similar dust composition, which suggests a common dust source or a common mixture of sources for the two sites. The analysed samples further reveal a change of dust composition during the last deglaciation.

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