Crick, Laura; Burke, Andrea; Hutchison, William; Kohno, Mika; Moore, Kathryn A; Savarino, Joël; Doyle, Emily A; Mahony, Sue H; Kipfstuhl, Sepp; Rae, James W B; Steele, Robert C J; Sparks, R Stephen J; Wolff, Eric William (2021): High-resolution sulfur isotopic composition measurements of volcanic sulfate from Toba candidate eruptions preserved in EDML and EDC Antarctic ice cores [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.933271
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Abstract:
Multiple peaks in sulfate concentration in ice cores have been identified as potential candidates for the ~74 ka Toba supereruption. The sulfur isotopic composition of sulfate preserved in two EPICA Antarctic ice cores, EDML and EDC, for 11 of the candidates has been analysed at high temporal resolution for mass-independent fractionation (MIF) using multi-collector inductively coupled plasma mass spectrometry. S-MIF signals preserved in volcanic sulfate are indicative of stratospheric eruptions due to sulfur aerosols being exposed to ultraviolet radiation when erupted into and above the ozone layer and subsequently undergoing photochemical reactions. Sulfur aerosols in the stratosphere will have longer residence times than those in the troposphere and will scatter incoming solar radiation. This data set includes the eruption, sample type, depths, ages (using the AICC2012 age model), sulfate concentration (determined by ion chromatography) and isotopic composition data (δ34S, δ33S, Δ33S) and their associated errors.
Related to:
Crick, Laura; Burke, Andrea; Hutchison, William; Kohno, Mika; Moore, Kathryn A; Savarino, Joël; Doyle, Emily A; Mahony, Sue H; Kipfstuhl, Sepp; Rae, James W B; Steele, Robert C J; Sparks, R Stephen J; Wolff, Eric William (2021): New insights into the ∼ 74 ka Toba eruption from sulfur isotopes of polar ice cores. Climate of the Past, 17(5), 2119-2137, https://doi.org/10.5194/cp-17-2119-2021
Project(s):
Funding:
Fifth Framework Programme (FP5), grant/award no. EVK2-CT-2000-00077: European Project for Ice Coring in Antarctica
Fourth Framework Programme (FP4), grant/award no. ENV4980702: European Project for Ice Coring in Antarctica
Coverage:
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
Minimum DEPTH, ice/snow: 1078.78 m * Maximum DEPTH, ice/snow: 1891.00 m
Event(s):
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 * Method/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 * Method/Device: EPICA drill (EDRILL) * Comment: Elevation is given with reference to WGS84
Comment:
EDML samples were from 1866.00 m - 1891.00 m.
EDC samples were from 1078.78 m - 1083.50 m.
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1440 data points