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 sett | ‰ | 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
Data
| 1 Depth ice/snow [m] | 2 Gas age [ka BP] (AICC2012, BP = 1950) | 3 δD CH4 [‰ SMOW] (measured, with respect to Vie...) | 4 δD CH4 std dev [±] (dD(CH4) error (1-sigma standa...) | 5 Grav sett [‰] (see supporting information of...) | 6 δD CH4 [‰ SMOW] (corrected for gravitational s...) |
|---|---|---|---|---|---|
| 1614.68 | 120.616 | -88.9 | 1.2 | 0.52 | -89.4 |
| 1633.72 | 122.127 | -89.6 | 1.2 | 0.52 | -90.1 |
| 1672.18 | 125.128 | -85.6 | 1.2 | 0.52 | -86.2 |
| 1685.95 | 126.325 | -94.1 | 1.2 | 0.52 | -94.6 |
| 1707.98 | 127.846 | -86.3 | 2.6 | 0.54 | -86.8 |
| 1751.99 | 130.878 | -59.1 | 2.6 | 0.53 | -59.7 |
| 1771.22 | 133.026 | -64.8 | 2.6 | 0.49 | -65.3 |
| 1799.35 | 137.743 | -60.8 | 2.6 | 0.42 | -61.2 |
| 1809.77 | 140.002 | -69.2 | 2.6 | 0.41 | -69.6 |
| 1826.17 | 143.600 | -67.4 | 2.6 | 0.43 | -67.9 |
| 1853.67 | 149.432 | -65.6 | 2.6 | 0.44 | -66.0 |
| 1864.77 | 151.485 | -63.5 | 2.6 | 0.44 | -63.9 |
| 2659.66 | 371.610 | -87.9 | 1.9 | 0.40 | -88.3 |
| 2669.56 | 376.971 | -88.8 | 1.7 | 0.41 | -89.2 |
| 2676.16 | 380.267 | -90.3 | 1.9 | 0.44 | -90.7 |
| 2679.46 | 381.854 | -93.6 | 2.0 | 0.45 | -94.0 |
| 2680.56 | 382.376 | -84.9 | 2.3 | 0.45 | -85.4 |
| 2684.96 | 384.603 | -98.4 | 2.3 | 0.46 | -98.9 |
| 2686.07 | 385.183 | -80.9 | 1.5 | 0.47 | -81.4 |
| 2691.56 | 387.736 | -84.8 | 1.7 | 0.48 | -85.3 |
| 2694.86 | 389.796 | -99.8 | 2.0 | 0.45 | -100.3 |
| 2701.46 | 393.309 | -82.5 | 2.6 | 0.48 | -83.0 |
| 2708.06 | 395.984 | -90.7 | 1.7 | 0.50 | -91.2 |
| 2714.66 | 398.538 | -84.8 | 2.3 | 0.51 | -85.3 |
| 2725.66 | 402.360 | -90.7 | 2.6 | 0.51 | -91.2 |
| 2734.46 | 405.294 | -95.4 | 2.3 | 0.52 | -95.9 |
| 2742.08 | 407.863 | -90.9 | 1.9 | 0.52 | -91.4 |
| 2742.23 | 407.914 | -93.3 | 1.9 | 0.52 | -93.8 |
| 2746.63 | 409.477 | -88.1 | 1.5 | 0.51 | -88.6 |
| 2749.88 | 410.743 | -87.7 | 1.3 | 0.49 | -88.2 |
| 2750.88 | 411.149 | -91.7 | 2.1 | 0.49 | -92.2 |
| 2751.03 | 411.210 | -90.7 | 2.3 | 0.49 | -91.2 |
| 2757.48 | 413.999 | -91.9 | 2.2 | 0.48 | -92.4 |
| 2757.63 | 414.063 | -88.5 | 2.2 | 0.48 | -89.0 |
| 2758.66 | 414.506 | -88.3 | 2.0 | 0.49 | -88.8 |
| 2767.46 | 418.570 | -89.3 | 2.3 | 0.49 | -89.8 |
| 2772.88 | 421.354 | -83.3 | 1.9 | 0.49 | -83.8 |
| 2773.03 | 421.434 | -77.6 | 2.6 | 0.49 | -78.1 |
| 2778.46 | 424.615 | -81.1 | 2.0 | 0.49 | -81.6 |
| 2780.66 | 425.847 | -75.5 | 2.0 | 0.49 | -76.0 |
| 2790.56 | 435.628 | -65.7 | 1.9 | 0.41 | -66.1 |
| 2794.96 | 441.927 | -66.8 | 2.6 | 0.40 | -67.2 |
| 2796.06 | 443.525 | -77.8 | 2.0 | 0.40 | -78.2 |
| 2800.46 | 448.902 | -78.3 | 2.3 | 0.42 | -78.7 |
| 2801.29 | 449.731 | -75.6 | 2.2 | 0.42 | -76.0 |
| 2804.86 | 453.134 | -94.0 | 2.0 | 0.43 | -94.4 |
| 2807.06 | 455.318 | -85.2 | 2.0 | 0.41 | -85.6 |