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 (2008): Aeolian dust and chemistry records from the EDML and EDC ice cores. PANGAEA, https://doi.org/10.1594/PANGAEA.690364, Supplement to: Ruth, U et al. (2008): Proxies and measurement techniques for mineral dust in Antarctic ice cores. Environmental Science and Technology, 42(15), 5675-5681, https://doi.org/10.1021/es703078z
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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.
Median Latitude: -75.051250 * Median Longitude: 61.709200 * South-bound Latitude: -75.100000 * West-bound Longitude: 0.068400 * North-bound Latitude: -75.002500 * East-bound Longitude: 123.350000
Date/Time Start: 1993-01-01T00:00:00 * Date/Time End: 2006-01-17T00:00:00
EDC (EPICA Dome C) * Latitude: -75.100000 * Longitude: 123.350000 * Date/Time Start: 1993-01-01T00:00:00 * Date/Time End: 2004-12-31T00:00:00 * Elevation: 3233.0 m * Recovery: 3300 m * Location: Dome C, Antarctica * Campaign: Dome C * Device: Ice drill (ICEDRILL) * Comment: Drill site is 56 km from the site of a previous Dome C core that provided records extending into the last glacial period, and 560 km from the site of the Vostok cores. The completion of the Dome C core was delayed when the first drilling became stuck at 788 m in 1999 (EDC96).
EDML (EPICA Dronning Maud Land, DML28C01_00) * Latitude: -75.002500 * Longitude: 0.068400 * Date/Time Start: 2001-01-10T00:00:00 * Date/Time End: 2006-01-17T00:00:00 * Elevation: 2891.7 m * Recovery: 2774.15 m * Campaign: EPICA-Campaigns * Basis: Kohnen Station * Device: EPICA drill (EDRILL) * Comment: Elevation is given with reference to WGS84