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Fernandoy, Francisco; Meyer, Hanno; Oerter, Hans; Wilhelms, Frank; Graf, Wolfgang; Schwander, Jakob (2010): Stable-isotope ratios and accumulation rates of four firn cores from the Dronning Maud Land, Antarctica [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.753185, Supplement to: Fernandoy, F et al. (2010): Temporal and Spatial variation of stable-isotope ratios and accumulation rates in the hinterland of Neumayer station, East Antarctica. Journal of Glaciology, 56(198), 673-687, https://doi.org/10.3189/002214310793146296

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Published: 2010-11-05 • DOI registered: 2010-12-06

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Abstract:
Four firn cores were retrieved in 2007 at two ridges in the area of the Ekström Ice Shelf, Dronning Maud Land, coastal East Antarctica, in order to investigate the recent regional climate variability and the potential for future extraction of an intermediate-depth core. Stable water-isotope analysis, tritium content and electrical conductivity were used to date the cores. For the period 1981-2006 a strong and significant correlation between the stable-isotope composition of firn cores in the hinterland and mean monthly air temperatures at Neumayer station was (r=0.54-0.71). No atmospheric warming or cooling trend is inferred from our stable-isotope data for the period 1962-2006. The stable-isotope record of the ice/firn cores could expand well beyond the meteorological record of the region. No significant temporal variation of accumulation rates was detected. However, decreasing accumulation rates were found from coast to hinterland, as well as from east (Halvfarryggen) to west (Søråsen). The deuterium excess (d) exhibits similar differences (higher d at Søråsen, lower d at Halvfarryggen), with a weak negative temporal trend on Halvfarryggen (0.04 per mil/a), probably implying increasing oceanic input. We conclude that Halvfarryggen acts as a natural barrier for moisture-carrying air masses circulating in the region from east to west.
Related to:
Fernandoy, Francisco; Oerter, Hans; Meyer, Hanno (2008): Spatial variability in isotope signatures of precipitation around Neumayer station, East Antarctica. Poster, SCAR-IASC Open Science Conference, St. Petersburg, Russia, 8-11 July 2008, hdl:10013/epic.30800.d001
Oerter, Hans; Fernandoy, Francisco; Meyer, Hanno; Wilhelms, Frank; Graf, Wolfgang; Stichler, Willibald (2008): Accumulation and stable-isotope content in the hinterland of Neumayer station, Antarctica, since the IPY 1957/58. Poster, SCAR-IASC Open Science Conference, St. Petersburg, Russia, 8-11 July 2008, hdl:10013/epic.30805.d001
Project(s):
European Project for Ice Coring in Antarctica (EPICA)
Glaciology @ AWI (AWI_Glac)
Funding:
Fifth Framework Programme (FP5), grant/award no. EVK2-CT-2000-00077: European Project for Ice Coring in Antarctica
Fourth Framework Programme (FP4), grant/award no. ENV4980702: European Project for Ice Coring in Antarctica
Coverage:
Median Latitude: -71.414736 * Median Longitude: -8.293342 * South-bound Latitude: -72.064000 * West-bound Longitude: -9.916700 * North-bound Latitude: -70.650000 * East-bound Longitude: -6.667000
Date/Time Start: 1981-01-15T00:00:00 * Date/Time End: 2007-02-01T23:59:00
Event(s):
DML94C07_38 (B38) * Latitude: -71.162100 * Longitude: -6.698900 * Date/Time Start: 2007-01-14T00:00:00 * Date/Time End: 2007-01-19T23:59:00 * Elevation: 690.0 m * Recovery: 84 m * Location: Dronning Maud Land, Antarctica * Campaign: Pre-IPICS * Basis: Sampling/drilling ice * Method/Device: Ice drill (ICEDRILL) * Comment: Location: Halvfaryggen North
DML95C07_01 (FB0701) * Latitude: -71.568000 * Longitude: -6.667000 * Date/Time Start: 2007-01-22T00:00:00 * Date/Time End: 2007-01-23T00:00:00 * Elevation: 539.0 m * Location: Dronning Maud Land, Antarctica * Campaign: Pre-IPICS * Basis: Sampling/drilling ice * Method/Device: Ice drill (ICEDRILL) * Comment: Location: Halvfaryggen South
DML95C07_02 (FB0702) * Latitude: -71.568000 * Longitude: -6.667000 * Date/Time Start: 2007-01-22T00:00:00 * Date/Time End: 2007-01-23T23:59:00 * Elevation: 539.0 m * Recovery: 42.8 m * Location: Dronning Maud Land, Antarctica * Campaign: Pre-IPICS * Basis: Sampling/drilling ice * Method/Device: Ice drill (ICEDRILL) * Comment: Location: Halvfaryggen South
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
32 datasets

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Datasets listed in this publication series

  1. Fernandoy, F; Meyer, H; Oerter, H et al. (2008): Tritium of firn core DML94C07_38. https://doi.org/10.1594/PANGAEA.704491
  2. Fernandoy, F; Meyer, H; Oerter, H et al. (2008): Tritium deposition of firn core DML94C07_38. https://doi.org/10.1594/PANGAEA.704493
  3. Fernandoy, F; Meyer, H; Oerter, H et al. (2008): Annual means of δ¹⁸O and accumulation rates of firn core DML94C07_38. https://doi.org/10.1594/PANGAEA.704480
  4. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): Borehole temperature profile of ice core DML94C07_38. https://doi.org/10.1594/PANGAEA.753165
  5. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): Low resolution δ¹⁸O and deuterium of firn core DML94C07_38. https://doi.org/10.1594/PANGAEA.753143
  6. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): Monthly mean δ¹⁸O values of ice core DML94C07_38 from 1981 to 2007. https://doi.org/10.1594/PANGAEA.753171
  7. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): High resolution δ¹⁸O and deuterium of firn core DML95C07_01. https://doi.org/10.1594/PANGAEA.753147
  8. Fernandoy, F; Meyer, H; Oerter, H et al. (2008): Annual means of δ¹⁸O and accumulation rates of firn core DML95C07_02. https://doi.org/10.1594/PANGAEA.704481
  9. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): Borehole temperature profile of ice core DML95C07_02. https://doi.org/10.1594/PANGAEA.753166
  10. Fernandoy, F; Meyer, H; Oerter, H et al. (2008): δ¹⁸O of firn core DML95C07_02. https://doi.org/10.1594/PANGAEA.704485
  11. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): Low resolution δ¹⁸O and deuterium of firn core DML95C07_02. https://doi.org/10.1594/PANGAEA.753144
  12. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): Monthly mean δ¹⁸O values of ice core DML95C07_02 from 1981 to 2007. https://doi.org/10.1594/PANGAEA.753172
  13. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): High resolution δ¹⁸O and deuterium of firn core DML95C07_03. https://doi.org/10.1594/PANGAEA.753148
  14. Fernandoy, F; Meyer, H; Oerter, H et al. (2008): Tritium of firn core DML96C07_39. https://doi.org/10.1594/PANGAEA.704492
  15. Fernandoy, F; Meyer, H; Oerter, H et al. (2008): Tritium deposition of firn core DML96C07_39. https://doi.org/10.1594/PANGAEA.704494
  16. Fernandoy, F; Meyer, H; Oerter, H et al. (2008): Annual means of δ¹⁸O and accumulation rates of firn core DML96C07_39. https://doi.org/10.1594/PANGAEA.704482
  17. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): Borehole temperature profile of firn core DML96C07_39. https://doi.org/10.1594/PANGAEA.753170
  18. Fernandoy, F; Meyer, H; Oerter, H et al. (2008): δ¹⁸O of firn core DML96C07_39. https://doi.org/10.1594/PANGAEA.704486
  19. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): Low resolution δ¹⁸O and deuterium of firn core DML96C07_39. https://doi.org/10.1594/PANGAEA.753145
  20. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): Monthly mean δ¹⁸O values of ice core DML96C07_39 from 1981 to 2007. https://doi.org/10.1594/PANGAEA.753173
  21. Fernandoy, F; Meyer, H; Oerter, H et al. (2008): Annual means of δ¹⁸O and accumulation rates of firn core DML97C07_04. https://doi.org/10.1594/PANGAEA.704483
  22. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): Borehole temperature profile of ice core DML97C07_04. https://doi.org/10.1594/PANGAEA.753167
  23. Fernandoy, F; Meyer, H; Oerter, H et al. (2008): δ¹⁸O of firn core DML97C07_04. https://doi.org/10.1594/PANGAEA.704487
  24. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): Low resolution δ¹⁸O and deuterium of firn core DML97C07_04. https://doi.org/10.1594/PANGAEA.753146
  25. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): Monthly mean δ¹⁸O values of ice core DML97C07_04 from 1981 to 2007. https://doi.org/10.1594/PANGAEA.753174
  26. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): Annual means of δ¹⁸O, density, and accumulation rates of firn core DML641C02_01. https://doi.org/10.1594/PANGAEA.753157
  27. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): High resolution δ¹⁸O, conductivity, and density of firn core DML641C02_01. https://doi.org/10.1594/PANGAEA.753182
  28. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): Annual means of δ¹⁸O, density, and accumulation rates of firn core DML651C02_03. https://doi.org/10.1594/PANGAEA.753158
  29. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): High resolution δ¹⁸O, conductivity, and density of firn core DML651C02_03. https://doi.org/10.1594/PANGAEA.753183
  30. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): δ¹⁸O and deuterium measured on fresh snow samples at Neumayer Station from 1981 to 2006. https://doi.org/10.1594/PANGAEA.753160
  31. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): Annual means of δ¹⁸O, deuterium, density, and accumulation rates of firn core NM02C02_02. https://doi.org/10.1594/PANGAEA.753159
  32. Fernandoy, F; Meyer, H; Oerter, H et al. (2010): High resolution δ¹⁸O, deuterium, conductivity, and density of firn core NM02C02_02. https://doi.org/10.1594/PANGAEA.753184