Projects per year
Description
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.
Category: geoscientificInformation
Source: Not Available
Supplemental Information: EDML samples were from 1866.00 m - 1891.00 m.
EDC samples were from 1078.78 m - 1083.50 m.
Coverage: EVENT LABEL: 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
EVENT LABEL: 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
Category: geoscientificInformation
Source: Not Available
Supplemental Information: EDML samples were from 1866.00 m - 1891.00 m.
EDC samples were from 1078.78 m - 1083.50 m.
Coverage: EVENT LABEL: 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
EVENT LABEL: 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
| Date made available | 1 Jul 2021 |
|---|---|
| Publisher | PANGAEA |
Projects
- 3 Finished
-
NERC Strategic Environmental Capital Cal: New analyses of trace environmental sulfate and sulfur and metal isotopes in individual organic compounds by multi-collector inductively coupled plasma mass spectometer (MC-ICP-MS) with gas chromatograph (GC)
Burke, A. (PI), Burdett, H. (CoI), Johnston, I. A. (CoI), Oduro, H. D. (CoI), Paterson, D. (CoI), Rae, J. W. B. (CoI) & Woollins, J. D. (CoI)
1/12/14 → 29/02/16
Project: Standard
Research output
- 1 Article
-
New insights into the ~74 ka Toba eruption from sulfur isotopes of polar ice cores
Crick, L., Burke, A., Hutchison, W., Kohno, M., Moore, K. A., Savarino, J., Doyle, E. A., Mahony, S., Kipfstuhl, S., Rae, J. W. B., Steele, R. C. J., Sparks, R. S. J. & Wolff, E. W., 18 Oct 2021, In: Climate of the Past. 17, 5, p. 2119–2137Research output: Contribution to journal › Article › peer-review
Open AccessFile21 Citations (Scopus)5 Downloads (Pure)