Bock, Michael; Schmitt, Jochen; Beck, Jonas; Seth, Barbara; Chappellaz, Jérôme A; Fischer, Hubertus (2017): Stable isotopic methane (dD(CH4)) records of ice core EDC [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.873916, In supplement to: Bock, M et al. (2017): Glacial/interglacial wetland, biomass burning, and geologic methane emissions constrained by dual stable isotopic CH4 ice core records. Proceedings of the National Academy of Sciences, 201613883, https://doi.org/10.1073/pnas.1613883114
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Coverage:
Latitude: -75.100000 * Longitude: 123.350000
Date/Time Start: 1993-01-01T00:00:00 * Date/Time End: 2004-12-31T00:00:00
Minimum DEPTH, ice/snow: 1614.68 m * Maximum DEPTH, ice/snow: 2807.06 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).
Comment:
All data are free of krypton interference during the mass spectrometric analysis. dD(CH4) data are measured using the system described in:
Bock, M., J. Schmitt, J. Beck, R. Schneider, H. Fischer, "Improving accuracy and precision of ice core dD(CH4) analyses using methane pre-pyrolysis and hydrogen post-pyrolysis trapping and subsequent chromatographic separation", Atmospheric Measurement Techniques, 7, 1999-2012, 2014, doi:10.5194/amt-7-1999-2014
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, ice/snow | Depth ice/snow | m | Bock, Michael | Geocode | |
| 2 | Gas age | Gas age | ka BP | Bock, Michael | AICC2012, BP = 1950 | |
| 3 | δ Deuterium, methane | δD CH4 | ‰ SMOW | Bock, Michael | Determined according to Bock et al. (2014) | measured, with respect to Vienna Standard Mean Ocean Water (VSMOW) |
| 4 | δ Deuterium, methane, standard deviation | δD CH4 std dev | ± | Bock, Michael | Determined according to Bock et al. (2014) | dD(CH4) error (1-sigma standard deviation of reference air in per mil) |
| 5 | Gravitational settling | Grav settl | ‰ | Bock, Michael | see Bock et al. (2017) | see supporting information of Bock et al. (2017) |
| 6 | δ Deuterium, methane | δD CH4 | ‰ SMOW | Bock, Michael | see Bock et al. (2017) | corrected for gravitational settling in the firn, with respect to Vienna Standard Mean Ocean Water (VSMOW) |
License:
Creative Commons Attribution-NoDerivs 3.0 Unported (CC-BY-ND-3.0)
Size:
235 data points