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PANGAEA.
Data Publisher for Earth & Environmental Science

Bock, Michael; Schmitt, Jochen; Beck, Jonas; Seth, Barbara; Chappellaz, Jérôme A; Fischer, Hubertus (2017): Stable isotopic methane (dD(CH4)) records of ice core EDC. 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):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DEPTH, ice/snowDepth ice/snowmBock, MichaelGeocode
2Gas ageGas ageka BPBock, MichaelAICC2012, BP = 1950
3δ Deuterium, methaneδD CH4‰ SMOWBock, MichaelDetermined according to Bock et al. (2014)measured, with respect to Vienna Standard Mean Ocean Water (VSMOW)
4δ Deuterium, methane, standard deviationδD CH4 std dev±Bock, MichaelDetermined according to Bock et al. (2014)dD(CH4) error (1-sigma standard deviation of reference air in per mil)
5Gravitational settlingGrav settBock, Michaelsee Bock et al. (2017)see supporting information of Bock et al. (2017)
6δ Deuterium, methaneδD CH4‰ SMOWBock, Michaelsee Bock et al. (2017)corrected for gravitational settling in the firn, with respect to Vienna Standard Mean Ocean Water (VSMOW)
Size:
235 data points

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