Bock, Michael; Schmitt, Jochen; Beck, Jonas; Seth, Barbara; Chappellaz, Jérôme A; Fischer, Hubertus (2017): Stable isotopic methane (dD(CH4)) records of ice core EDML [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.873917, 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: -75.002500 * Longitude: 0.068400
Date/Time Start: 2001-01-10T00:00:00 * Date/Time End: 2006-01-17T00:00:00
Minimum DEPTH, ice/snow: 127.58 m * Maximum DEPTH, ice/snow: 2363.61 m
Event(s):
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:
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:
270 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...) |
|---|---|---|---|---|---|
| 127.58 | 0.603 | -71.2 | 1.8 | 0.44 | -71.7 |
| 182.42 | 1.415 | -70.9 | 1.2 | 0.44 | -71.3 |
| 195.50 | 1.604 | -67.5 | 1.4 | 0.44 | -68.0 |
| 230.38 | 2.067 | -70.2 | 2.1 | 0.44 | -70.6 |
| 268.45 | 2.656 | -71.6 | 1.7 | 0.44 | -72.0 |
| 303.48 | 3.192 | -67.6 | 2.1 | 0.44 | -68.0 |
| 352.44 | 4.012 | -72.8 | 0.9 | 0.44 | -73.2 |
| 375.19 | 4.414 | -74.8 | 1.8 | 0.44 | -75.2 |
| 424.44 | 5.271 | -73.3 | 1.7 | 0.44 | -73.7 |
| 471.50 | 6.165 | -73.6 | 2.1 | 0.44 | -74.0 |
| 484.18 | 6.383 | -76.7 | 1.4 | 0.44 | -77.1 |
| 518.19 | 7.063 | -74.1 | 1.8 | 0.44 | -74.6 |
| 567.33 | 8.171 | -69.9 | 1.2 | 0.44 | -70.3 |
| 615.16 | 9.278 | -71.5 | 0.9 | 0.44 | -71.9 |
| 639.48 | 9.880 | -72.9 | 2.1 | 0.44 | -73.3 |
| 663.52 | 10.308 | -71.3 | 1.8 | 0.44 | -71.8 |
| 686.44 | 10.833 | -63.6 | 2.1 | 0.44 | -64.0 |
| 711.55 | 11.418 | -61.8 | 2.1 | 0.44 | -62.2 |
| 735.38 | 11.955 | -61.7 | 2.1 | 0.44 | -62.2 |
| 759.56 | 12.501 | -62.0 | 2.1 | 0.44 | -62.4 |
| 783.19 | 13.285 | -66.7 | 1.7 | 0.44 | -67.1 |
| 809.32 | 14.077 | -62.7 | 2.1 | 0.44 | -63.1 |
| 832.45 | 14.770 | -61.9 | 2.1 | 0.44 | -62.3 |
| 854.45 | 15.345 | -55.8 | 2.1 | 0.44 | -56.2 |
| 867.19 | 15.733 | -57.7 | 2.1 | 0.44 | -58.1 |
| 891.51 | 16.433 | -54.9 | 2.1 | 0.44 | -55.4 |
| 915.30 | 17.285 | -55.5 | 2.1 | 0.44 | -56.0 |
| 938.23 | 18.244 | -57.2 | 1.7 | 0.44 | -57.7 |
| 951.21 | 18.815 | -59.3 | 2.1 | 0.44 | -59.7 |
| 951.48 | 18.827 | -59.8 | 2.1 | 0.44 | -60.2 |
| 962.72 | 19.408 | -53.6 | 2.1 | 0.44 | -54.0 |
| 1011.51 | 21.362 | -54.6 | 2.1 | 0.44 | -55.0 |
| 2217.14 | 104.165 | -95.9 | 2.9 | 0.44 | -96.3 |
| 2249.28 | 109.207 | -88.8 | 1.9 | 0.44 | -89.2 |
| 2256.48 | 110.293 | -84.8 | 2.9 | 0.44 | -85.2 |
| 2261.28 | 110.957 | -80.4 | 3.8 | 0.44 | -80.8 |
| 2267.48 | 111.846 | -92.0 | 3.0 | 0.44 | -92.4 |
| 2277.85 | 113.411 | -83.3 | 3.6 | 0.44 | -83.7 |
| 2297.28 | 116.168 | -87.0 | 1.9 | 0.44 | -87.4 |
| 2301.10 | 116.700 | -87.7 | 3.6 | 0.44 | -88.1 |
| 2301.33 | 116.733 | -89.8 | 2.1 | 0.44 | -90.3 |
| 2303.45 | 117.034 | -90.5 | 2.9 | 0.44 | -90.9 |
| 2309.26 | 117.803 | -88.2 | 3.8 | 0.44 | -88.6 |
| 2315.74 | 118.720 | -92.0 | 2.9 | 0.44 | -92.4 |
| 2320.28 | 119.405 | -82.5 | 3.8 | 0.44 | -82.9 |
| 2325.59 | 120.289 | -86.6 | 1.5 | 0.44 | -87.0 |
| 2325.81 | 120.327 | -92.0 | 1.8 | 0.44 | -92.4 |
| 2327.48 | 120.613 | -92.8 | 2.9 | 0.44 | -93.2 |
| 2333.28 | 121.595 | -99.5 | 1.9 | 0.44 | -99.9 |
| 2336.10 | 122.098 | -92.7 | 3.6 | 0.44 | -93.1 |
| 2338.48 | 122.532 | -96.0 | 1.9 | 0.44 | -96.4 |
| 2348.59 | 124.492 | -91.6 | 3.6 | 0.44 | -92.0 |
| 2351.74 | 125.140 | -92.8 | 2.9 | 0.44 | -93.2 |
| 2363.61 | 127.587 | -86.5 | 3.8 | 0.44 | -86.9 |