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Oerter, Hans; Graf, Wolfgang; Wilhelms, Frank; Minikin, Andreas; Miller, Heinz (1999): Physical properties of firn cores from the 1995/96 and 1996/97 field seasons [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.728160, Supplement to: Oerter, H et al. (1999): Accumulation studies on Amundsenisen, Dronning Maud Land, by means of tritium, DEP and stable isotope measurements: first results from the 1995/96 and 1996/97 field seasons. Annals of Glaciology, 29, 1-9, https://doi.org/10.3189/172756499781820914

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Abstract:
The paper focuses on studies of snow-pit samples and shallow firn cores taken during the 1995-96 and 1996-97 field seasons at Amundsenisen, Dronning Maud Land, Antarctica. The dating of the firn is based on the artificial tritium distribution in the snow cover and on several reference horizons identified by electrical measurements. The early 1964 through 1965 horizon is marked by the deposition of sulfate released to the atmosphere during the eruption of the Agung volcano in March 1963; this horizon was detected by dielectric profiling and electrical conductivity measurements; the proof by chemical analysis has still to be seen. At the ten investigated sites on Amundsenisen the 1964-65 horizon was identified 4.1-5.7 m below the surface. The accumulation rates on Amundsenisen are 41-91 kg/m**2/a. The cores are up to 100 years old. A relationship between isotope content and the mean air temperature on a regional scale can be based on measurements of firn temperature at 10 m depth at the drilling sites. Between Neumayer station at the coast and Heimefrontfjella, the temperature gradient of the deuterium content is 9.6 per mil/K. South of Heimefrontfjella, on the Amundsenisen plateau, it is only 5.5 per mil/K. Time series of yearly accumulation rates show no significant trend. For the isotope records a significant trend to higher values with gradients of 0.1-0.2 d2H per mil/a can be seen in five of the ten time series.
Project(s):
European Project for Ice Coring in Antarctica (EPICA)
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: -75.137889 * Median Longitude: 3.672981 * South-bound Latitude: -75.933333 * West-bound Longitude: -3.430333 * North-bound Latitude: -74.399000 * East-bound Longitude: 11.350000
Date/Time Start: 1997-01-01T00:00:00 * Date/Time End: 1997-01-30T00:00:00
Event(s):
DML01C97_00 (FB97DML01) * Latitude: -74.855000 * Longitude: -2.550000 * Date/Time: 1997-01-13T00:00:00 * Elevation Start: 2817.0 m * Elevation End: 2831.0 m * Recovery: 5.7 m * Location: Dronning Maud Land, Antarctica * Campaign: EPICA_DML2 * Basis: Neumayer Station (WMO89002) * Method/Device: Firn auger (FIRN) * Comment: DML01
DML03C97_00 (FB97DML03) * Latitude: -74.499500 * Longitude: 1.961167 * Date/Time: 1997-01-05T00:00:00 * Elevation Start: 2843.0 m * Elevation End: 2855.0 m * Recovery: 11.7 m * Location: Dronning Maud Land, Antarctica * Campaign: EPICA_DML2 * Basis: Neumayer Station (WMO89002) * Method/Device: Firn auger (FIRN) * Comment: DML03
DML04C97_00 (FB97DML04) * Latitude: -74.399000 * Longitude: 7.217500 * Date/Time: 1997-01-24T00:00:00 * Elevation Start: 3161.0 m * Elevation End: 3179.0 m * Recovery: 11.8 m * Location: Dronning Maud Land, Antarctica * Campaign: EPICA_DML2 * Basis: Neumayer Station (WMO89002) * Method/Device: Firn auger (FIRN) * Comment: DML04
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
9 datasets

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Datasets listed in this publication series

  1. Oerter, H; Graf, W; Wilhelms, F et al. (1999): Physical properties of firn core DML01C97_00. https://doi.org/10.1594/PANGAEA.58434
  2. Oerter, H; Graf, W; Wilhelms, F et al. (1999): Physical properties of firn core DML03C97_00. https://doi.org/10.1594/PANGAEA.58794
  3. Oerter, H; Graf, W; Wilhelms, F et al. (1999): Physical properties of firn core DML04C97_00. https://doi.org/10.1594/PANGAEA.58436
  4. Oerter, H; Graf, W; Wilhelms, F et al. (1999): Physical properties of firn core DML05C97_00. https://doi.org/10.1594/PANGAEA.58795
  5. Oerter, H; Graf, W; Wilhelms, F et al. (1999): Physical properties of firn core DML06C97_00. https://doi.org/10.1594/PANGAEA.58796
  6. Oerter, H; Graf, W; Wilhelms, F et al. (1999): Physical properties of firn core DML07C97_00. https://doi.org/10.1594/PANGAEA.58792
  7. Oerter, H; Graf, W; Wilhelms, F et al. (1999): Physical properties of firn core DML08C97_00. https://doi.org/10.1594/PANGAEA.58440
  8. Oerter, H; Graf, W; Wilhelms, F et al. (1999): Physical properties of firn core DML09C97_00. https://doi.org/10.1594/PANGAEA.58793
  9. Oerter, H; Graf, W; Wilhelms, F et al. (1999): Physical properties of firn core DML10C97_00. https://doi.org/10.1594/PANGAEA.58442