GISP2 ice-core volcanic sulfate concentration and deposition between 2635 and 2638 m depth (c. 80 ka BP)

We present continuous records of 1 cm resolved sodium, sulfur, non-sea-salt sulfur, size-resolved insoluble particle concentrations and liquid conductivity using a Continuous Flow Analysis (CFA) system (McConnell et al., 2017) from the Greenland Ice Sheet Project Two (GISP2; 72.97°N, 38.80°W) ice co...

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Bibliographic Details
Main Authors: Sigl, Michael, McConnell, Joseph R, Chellman, Nathan J
Format: Dataset
Language:English
Published: PANGAEA 2023
Subjects:
Accumulation rate in ice equivalent per year
AGE
Calculated
running median
CFA
Conductivity
electrolytic
Continuous Flow Analysis
Corrected
Deposition of sulfate
volcanic
cumulative
DEPTH
ice/snow
DRILL
Drilling/drill rig
dust
insoluble
GISP
GISP2
Greenland
Ice core
Sampling/drilling ice
Sodium
Sulfate
background
Sulfur
non-sea-salt
Volcanic aerosol
volcanic eruption
Reno
Greenland ice core
Greenland Ice Sheet Project
ice core
Ice Sheet
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.962783
https://doi.org/10.1594/PANGAEA.962783
Description
Summary:We present continuous records of 1 cm resolved sodium, sulfur, non-sea-salt sulfur, size-resolved insoluble particle concentrations and liquid conductivity using a Continuous Flow Analysis (CFA) system (McConnell et al., 2017) from the Greenland Ice Sheet Project Two (GISP2; 72.97°N, 38.80°W) ice core and estimated volcanic sulfate mass depositions for the depth interval 2635-2638 m (equivalent to an age of c. 80 ka BP on GICC05modelext (Seierstad et al., 2014) and 79.5 ka BP on AICC2012 (Veres et al., 2013). The reconstruction is based on sulfur measurements employing high-resolution continuous flow analysis coupled to inductively coupled plasma mass spectrometry performed at the Desert Research Institute (Reno, NV, USA) under (class 100) cleanroom conditions. 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 equivalent (i.e. sulfur x 3) concentrations using thinning corrected estimates of mean ice accumulation rates at the ice-core site.

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