Publication Date:
2024-06-12
Description:
We present continuous records of ca. 2 cm resolved sulfate concentrations using a Continuous Flow Analysis (CFA) system (Röthlisberger et al., 2000; Severi et al., 2007; Wegner et al., 2015) from the EPICA Dronning Maud Land (EDML; 75.00°S, 00.07°E; 2892 m a.s.l.) ice core and estimated volcanic sulfate mass depositions for the time period 78.97 to 79.97 ka BP on the AICC2012 chronology (Veres et al., 2013) using a common volcanic marker in EDC dated 79.51 ka BP. The reconstruction is based on sulfate measurements employing high-resolution continuous flow analysis coupled to Fast Ion Chromatography. Volcanic eruptions are detected when annual sulfur concentrations exceeded the background concentrations + 4 times the median of the absolute deviation. Background concentrations are estimated using a 101-point running median. Volcanic sulfate deposition rates are calculated by subtracting the background concentrations from total sulfate concentrations using thinning corrected estimates of mean ice accumulation rates at the ice-core site.
Keywords:
Accumulation rate in ice equivalent per year; AGE; Antarctica; Calculated; Calculated, running median; CFA; Continuous Flow Analysis; Corrected; Deposition of sulfate, volcanic; Deposition of sulfate, volcanic, cumulative; DEPTH, ice/snow; EDML; EDRILL; EPICA-Campaigns; EPICA drill; EPICA Dronning Maud Land, DML28C01_00; Ice core; Kohnen Station; sulfate; Sulfate; Sulfate, background; Sulfate, volcanic; sulfate aerosol; sulfate concentrations; volcanic activity; volcanic eruption; volcanism
Type:
Dataset
Format:
text/tab-separated-values, 3615 data points
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