Bock, Michael; Schmitt, Jochen; Beck, Jonas; Seth, Barbara; Chappellaz, Jérôme A; Fischer, Hubertus (2017): Stable isotopic methane (δ¹³CH4) records of ice core EDC [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.873913, 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
Always quote citation above when using data! You can download the citation in several formats below.
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: 509.30 m * Maximum DEPTH, ice/snow: 2805.97 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:
d13CH4 data are measured using the system described in:
Schmitt, J., B. Seth, M. Bock, H. Fischer, "Online technique for isotope and mixing ratios of CH4, N2O, Xe and mixing ratios of organic trace gases on a single ice core sample", Atmospheric Measurement Techniques, 7/8, 2645-2665, 2014, doi:10.5194/amt-7-2645-2014
All data are free of krypton interference during the mass spectrometric analysis. For details see:
Schmitt, J., B. Seth, M. Bock, C. van der Veen, L. Möller, C. J. Sapart, M. Prokopiou, T. Sowers, T. Röckmann, H. Fischer, "On the interference of Kr during carbon isotope analysis of methane using continuous-flow combustion-isotope ratio mass spectrometry", Atmospheric Measurement Techniques, 6/1, 1425-1445, 2013, doi:10.5194/amt-6-1425-2013
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 | Methane mixing ratio | CH4 mix ratio | nmol/mol | Bock, Michael | Determined according to Schmitt et al. (2014) | measured |
| 4 | Methane mixing ratio, standard deviation | CH4 mix ratio std dev | ± | Bock, Michael | Determined according to Schmitt et al. (2014) | Methane mixing ratio error (1-sigma standard deviation of ice core replicates in nmol/mol) |
| 5 | δ13C, methane | δ13C CH4 | ‰ PDB | Bock, Michael | Determined according to Schmitt et al. (2014) | measured, with respect to Vienna Pee Dee Belemnite (VPDB) |
| 6 | δ13C, methane, standard deviation | δ13C CH4 std dev | ± | Bock, Michael | Determined according to Schmitt et al. (2014) | d13CH4 error (1-sigma standard deviation of ice core replicates in per mil with respect to Vienna Pee Dee Belemnite (VPDB)) |
| 7 | Gravitational settling | Grav sett | ‰ | Bock, Michael | see Bock et al. (2017) | see supporting information of Bock et al. (2017) |
| 8 | δ13C, methane | δ13C CH4 | ‰ PDB | Bock, Michael | see Bock et al. (2017) | corrected for gravitational settling in the firn, with respect to Vienna Pee Dee Belemnite (VPDB) |
| 9 | Diffusive fractionation | Diff frac | ‰ | Bock, Michael | see Bock et al. (2017) | see supporting information of Bock et al. (2017) |
| 10 | δ13C, methane | δ13C CH4 | ‰ PDB | Bock, Michael | see Bock et al. (2017) | corrected for gravitational settling and diffusional fractionation in the firn, with respect to Vienna Pee Dee Belemnite (VPDB) |
License:
Creative Commons Attribution-NoDerivs 3.0 Unported (CC-BY-ND-3.0)
Size:
810 data points
Data
| 1 Depth ice/snow [m] | 2 Gas age [ka BP] (AICC2012, BP = 1950) | 3 CH4 mix ratio [nmol/mol] (measured, Determined accordin...) | 4 CH4 mix ratio std dev [±] (Methane mixing ratio error (1...) | 5 δ13C CH4 [‰ PDB] (measured, with respect to Vie...) | 6 δ13C CH4 std dev [±] (d13CH4 error (1-sigma standar...) | 7 Grav sett [‰] (see supporting information of...) | 8 δ13C CH4 [‰ PDB] (corrected for gravitational s...) | 9 Diff frac [‰] (see supporting information of...) | 10 δ13C CH4 [‰ PDB] (corrected for gravitational s...) |
|---|---|---|---|---|---|---|---|---|---|
| 509.30 | 16.974 | 450 | 5 | -43.51 | 0.15 | 0.44 | -43.95 | -0.04 | -43.92 |
| 1410.84 | 100.176 | 557 | 5 | -48.88 | 0.15 | 0.46 | -49.34 | 0.02 | -49.36 |
| 1454.98 | 104.346 | 623 | 5 | -48.11 | 0.15 | 0.47 | -48.58 | 0.00 | -48.59 |
| 1465.94 | 105.520 | 635 | 5 | -47.84 | 0.15 | 0.45 | -48.29 | -0.01 | -48.29 |
| 1482.34 | 106.979 | 473 | 5 | -48.99 | 0.15 | 0.47 | -49.46 | 0.02 | -49.48 |
| 1493.34 | 108.407 | 524 | 5 | -49.22 | 0.15 | 0.46 | -49.68 | 0.00 | -49.68 |
| 1509.98 | 110.524 | 475 | 5 | -50.54 | 0.15 | 0.47 | -51.01 | -0.02 | -51.00 |
| 1520.79 | 111.827 | 482 | 5 | -50.77 | 0.15 | 0.49 | -51.26 | 0.01 | -51.27 |
| 1526.30 | 112.589 | 474 | 5 | -51.12 | 0.15 | 0.48 | -51.60 | 0.00 | -51.60 |
| 1537.34 | 113.737 | 478 | 5 | -51.52 | 0.15 | 0.51 | -52.03 | 0.00 | -52.02 |
| 1554.08 | 115.464 | 524 | 5 | -52.19 | 0.15 | 0.51 | -52.70 | 0.01 | -52.71 |
| 1564.84 | 116.494 | 547 | 5 | -51.77 | 0.15 | 0.52 | -52.29 | 0.00 | -52.30 |
| 1581.29 | 117.881 | 572 | 5 | -51.55 | 0.15 | 0.52 | -52.07 | 0.00 | -52.07 |
| 1581.41 | 117.894 | 563 | 5 | -51.58 | 0.15 | 0.52 | -52.10 | 0.00 | -52.10 |
| 1597.84 | 119.296 | 586 | 5 | -51.04 | 0.15 | 0.52 | -51.56 | 0.00 | -51.56 |
| 1614.34 | 120.589 | 596 | 5 | -50.41 | 0.15 | 0.52 | -50.93 | 0.01 | -50.94 |
| 1625.43 | 121.481 | 620 | 5 | -50.43 | 0.15 | 0.52 | -50.95 | 0.00 | -50.95 |
| 1636.34 | 122.344 | 606 | 5 | -50.23 | 0.15 | 0.52 | -50.75 | 0.01 | -50.75 |
| 1652.93 | 123.677 | 623 | 5 | -49.98 | 0.15 | 0.51 | -50.49 | 0.01 | -50.50 |
| 1674.89 | 125.337 | 650 | 5 | -49.84 | 0.15 | 0.53 | -50.37 | 0.01 | -50.39 |
| 1675.00 | 125.345 | 660 | 5 | -49.92 | 0.15 | 0.53 | -50.45 | 0.01 | -50.46 |
| 1696.80 | 127.082 | 679 | 5 | -49.14 | 0.15 | 0.54 | -49.68 | 0.03 | -49.71 |
| 1724.34 | 128.884 | 549 | 5 | -48.36 | 0.15 | 0.55 | -48.91 | -0.18 | -48.73 |
| 1762.84 | 132.050 | 472 | 5 | -46.79 | 0.15 | 0.50 | -47.29 | -0.02 | -47.27 |
| 1793.16 | 136.520 | 412 | 5 | -45.15 | 0.15 | 0.42 | -45.57 | 0.00 | -45.57 |
| 1804.72 | 138.853 | 414 | 5 | -45.03 | 0.15 | 0.42 | -45.45 | -0.04 | -45.41 |
| 1820.58 | 142.340 | 351 | 5 | -45.32 | 0.15 | 0.43 | -45.75 | 0.01 | -45.76 |
| 1837.03 | 146.030 | 384 | 5 | -44.86 | 0.15 | 0.45 | -45.31 | -0.01 | -45.30 |
| 1848.17 | 148.266 | 404 | 5 | -44.97 | 0.15 | 0.45 | -45.42 | 0.00 | -45.42 |
| 1859.26 | 150.573 | 429 | 5 | -45.20 | 0.15 | 0.44 | -45.64 | 0.02 | -45.66 |
| 1875.74 | 153.744 | 434 | 5 | -44.60 | 0.15 | 0.44 | -45.04 | 0.00 | -45.03 |
| 1887.21 | 156.364 | 401 | 5 | -44.22 | 0.15 | 0.44 | -44.66 | -0.01 | -44.64 |
| 1903.94 | 160.169 | 416 | 5 | -44.93 | 0.15 | 0.44 | -45.37 | 0.00 | -45.36 |
| 2659.39 | 371.459 | 480 | 5 | -46.72 | 0.15 | 0.41 | -47.13 | 0.01 | -47.14 |
| 2661.86 | 372.777 | 518 | 5 | -46.75 | 0.15 | 0.40 | -47.15 | 0.01 | -47.16 |
| 2662.97 | 373.337 | 525 | 5 | -46.41 | 0.15 | 0.40 | -46.81 | 0.02 | -46.83 |
| 2665.17 | 374.467 | 527 | 5 | -45.85 | 0.15 | 0.40 | -46.25 | -0.06 | -46.19 |
| 2668.47 | 376.375 | 424 | 5 | -45.99 | 0.15 | 0.40 | -46.39 | 0.00 | -46.39 |
| 2669.29 | 376.823 | 426 | 5 | -46.80 | 0.15 | 0.41 | -47.21 | 0.00 | -47.21 |
| 2670.67 | 377.542 | 449 | 5 | -47.23 | 0.15 | 0.42 | -47.65 | 0.01 | -47.66 |
| 2675.07 | 379.749 | 469 | 5 | -48.14 | 0.15 | 0.44 | -48.58 | 0.01 | -48.59 |
| 2675.89 | 380.139 | 489 | 5 | -48.31 | 0.15 | 0.44 | -48.75 | -0.01 | -48.74 |
| 2679.19 | 381.724 | 522 | 5 | -48.58 | 0.15 | 0.45 | -49.03 | -0.01 | -49.02 |
| 2680.29 | 382.248 | 556 | 5 | -48.47 | 0.15 | 0.45 | -48.92 | 0.04 | -48.96 |
| 2684.69 | 384.462 | 524 | 5 | -48.35 | 0.15 | 0.46 | -48.81 | 0.04 | -48.85 |
| 2686.75 | 385.506 | 549 | 5 | -48.62 | 0.15 | 0.47 | -49.09 | 0.01 | -49.10 |
| 2690.39 | 387.149 | 590 | 5 | -48.06 | 0.15 | 0.49 | -48.55 | -0.09 | -48.46 |
| 2691.29 | 387.577 | 530 | 5 | -48.64 | 0.15 | 0.48 | -49.12 | -0.10 | -49.02 |
| 2692.67 | 388.390 | 458 | 5 | -49.13 | 0.15 | 0.46 | -49.59 | -0.01 | -49.58 |
| 2694.59 | 389.635 | 509 | 5 | -49.06 | 0.15 | 0.45 | -49.51 | 0.08 | -49.59 |
| 2695.62 | 390.249 | 523 | 5 | -48.30 | 0.15 | 0.46 | -48.76 | 0.01 | -48.76 |
| 2697.09 | 391.066 | 538 | 5 | -48.33 | 0.15 | 0.46 | -48.79 | -0.02 | -48.77 |
| 2698.17 | 391.641 | 481 | 5 | -49.52 | 0.15 | 0.47 | -49.99 | -0.02 | -49.97 |
| 2701.19 | 393.183 | 483 | 5 | -50.55 | 0.15 | 0.48 | -51.03 | -0.02 | -51.01 |
| 2702.57 | 393.827 | 544 | 5 | -50.25 | 0.15 | 0.48 | -50.73 | 0.08 | -50.82 |
| 2705.87 | 395.172 | 588 | 5 | -50.07 | 0.15 | 0.49 | -50.56 | 0.00 | -50.56 |
| 2712.47 | 397.712 | 622 | 5 | -50.19 | 0.15 | 0.51 | -50.70 | 0.00 | -50.69 |
| 2714.39 | 398.434 | 615 | 5 | -50.13 | 0.15 | 0.51 | -50.64 | 0.00 | -50.64 |
| 2717.89 | 399.750 | 607 | 5 | -50.00 | 0.15 | 0.51 | -50.51 | 0.03 | -50.54 |
| 2720.17 | 400.570 | 629 | 5 | -50.17 | 0.15 | 0.51 | -50.68 | 0.06 | -50.74 |
| 2725.39 | 402.274 | 638 | 5 | -49.66 | 0.15 | 0.51 | -50.17 | 0.00 | -50.17 |
| 2728.97 | 403.450 | 662 | 5 | -49.89 | 0.15 | 0.53 | -50.42 | 0.03 | -50.45 |
| 2734.19 | 405.204 | 677 | 5 | -49.75 | 0.15 | 0.52 | -50.27 | 0.00 | -50.27 |
| 2738.45 | 406.638 | 677 | 5 | -49.83 | 0.15 | 0.52 | -50.35 | -0.01 | -50.34 |
| 2741.89 | 407.798 | 714 | 5 | -49.73 | 0.15 | 0.52 | -50.25 | -0.04 | -50.20 |
| 2750.69 | 411.072 | 686 | 5 | -50.10 | 0.15 | 0.49 | -50.59 | -0.01 | -50.58 |
| 2753.17 | 412.112 | 690 | 5 | -49.95 | 0.15 | 0.48 | -50.43 | 0.01 | -50.44 |
| 2756.47 | 413.564 | 696 | 5 | -50.29 | 0.15 | 0.48 | -50.77 | 0.03 | -50.80 |
| 2757.29 | 413.920 | 655 | 5 | -50.41 | 0.15 | 0.48 | -50.89 | 0.02 | -50.91 |
| 2758.39 | 414.391 | 683 | 5 | -50.36 | 0.15 | 0.49 | -50.85 | -0.01 | -50.84 |
| 2760.87 | 415.497 | 658 | 5 | -50.53 | 0.15 | 0.49 | -51.02 | 0.00 | -51.02 |
| 2763.07 | 416.509 | 639 | 5 | -50.46 | 0.15 | 0.49 | -50.95 | 0.01 | -50.96 |
| 2767.19 | 418.436 | 648 | 5 | -50.28 | 0.15 | 0.49 | -50.77 | 0.02 | -50.79 |
| 2768.57 | 419.118 | 685 | 5 | -49.98 | 0.15 | 0.49 | -50.47 | 0.00 | -50.47 |
| 2769.68 | 419.677 | 668 | 5 | -49.68 | 0.15 | 0.49 | -50.17 | 0.02 | -50.19 |
| 2771.87 | 420.800 | 688 | 5 | -49.72 | 0.15 | 0.49 | -50.21 | 0.00 | -50.21 |
| 2772.69 | 421.249 | 703 | 5 | -49.57 | 0.15 | 0.49 | -50.06 | 0.01 | -50.08 |
| 2775.17 | 422.653 | 685 | 5 | -49.26 | 0.15 | 0.49 | -49.75 | 0.00 | -49.75 |
| 2778.19 | 424.454 | 656 | 5 | -48.71 | 0.15 | 0.49 | -49.20 | -0.03 | -49.17 |
| 2779.57 | 425.231 | 599 | 5 | -48.41 | 0.15 | 0.49 | -48.90 | 0.02 | -48.92 |
| 2780.39 | 425.688 | 613 | 5 | -48.20 | 0.15 | 0.49 | -48.69 | -0.03 | -48.66 |
| 2785.07 | 429.000 | 423 | 5 | -46.06 | 0.15 | 0.45 | -46.51 | -0.06 | -46.45 |
| 2786.12 | 430.021 | 424 | 5 | -45.40 | 0.15 | 0.43 | -45.83 | 0.05 | -45.88 |
| 2790.29 | 435.245 | 386 | 5 | -43.81 | 0.15 | 0.42 | -44.23 | 0.00 | -44.22 |
| 2793.74 | 440.170 | 390 | 5 | -43.73 | 0.15 | 0.41 | -44.14 | 0.00 | -44.14 |
| 2794.69 | 441.538 | 382 | 5 | -43.72 | 0.15 | 0.40 | -44.12 | 0.00 | -44.13 |
| 2797.09 | 444.962 | 402 | 5 | -44.03 | 0.15 | 0.41 | -44.44 | 0.01 | -44.45 |
| 2802.54 | 450.968 | 418 | 5 | -43.54 | 0.15 | 0.43 | -43.97 | -0.01 | -43.96 |
| 2802.67 | 451.096 | 418 | 5 | -43.44 | 0.15 | 0.43 | -43.87 | 0.01 | -43.88 |
| 2805.97 | 454.221 | 389 | 5 | -43.56 | 0.15 | 0.42 | -43.98 | 0.00 | -43.98 |