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Mojtabavi, Seyedhamidreza; Wilhelms, Frank; Cook, Eliza; Davies, Siwan M; Sinnl, Giulia; Skov Jensen, Mathias; Dahl-Jensen, Dorthe; Svensson, Anders M; Vinther, Bo Møllesøe; Kipfstuhl, Sepp; Karlsson, Nanna Bjørnholt; Faria, Sergio Henrique; Gkinis, Vasileios; Kjær, Helle Astrid; Erhardt, Tobias; Berben, Sarah M P; Nisancioglu, Kerim H; Koldtoft, Iben; Rasmussen, Sune Olander (2020): Chronology for the East GReenland Ice-core Project (EGRIP) [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.922139

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Abstract:
This paper provides the first chronology for the deep ice core from the East GReenland Ice-core Project (EGRIP) over the Holocene and late last glacial period. We rely mainly on volcanic events and common patterns of peaks in dielectric profiling (DEP), electrical conductivity measurements (ECM) and tephra records for the synchronization between the EGRIP, NEEM and NGRIP ice cores in Greenland. We transfer the annual-layer-counted Greenland Ice Core Chronology 2005 (GICC05) timescale from the NGRIP core to the EGRIP ice core by means of 373 match points. The NEEM ice core is only used for supporting match-point identification. We name our EGRIP time scale GICC05-EGRIP-1. Over the uppermost 1383.84 m, we establish a depth–age relationship dating back to 14,965 a b2k (years before the year 2000 CE). Tephra horizons provide an independent validation of our match points. In addition, we compare the ratio of annual layer thicknesses between ice cores in-between the match points to assess our results in view of the different ice-flow patterns and accumulation regimes of the different periods and geographical regions. This initial timescale is the basis of interpretation and refinement of the presently derived EGRIP high-resolution data sets of chemical impurities.
Supplement to:
Mojtabavi, Seyedhamidreza; Wilhelms, Frank; Cook, Eliza; Davies, Siwan M; Sinnl, Giulia; Skov Jensen, Mathias; Dahl-Jensen, Dorthe; Svensson, Anders M; Vinther, Bo Møllesøe; Kipfstuhl, Sepp; Karlsson, Nanna Bjørnholt; Faria, Sergio Henrique; Gkinis, Vasileios; Kjær, Helle Astrid; Erhardt, Tobias; Berben, Sarah M P; Nisancioglu, Kerim H; Koldtoft, Iben; Rasmussen, Sune Olander (2020): A first chronology for the East GReenland Ice-core Project (EGRIP) over the Holocene and last glacial termination. Climate of the Past, 16, 2359-2380, https://doi.org/10.5194/cp-16-2359-2020
Project(s):
East Greenland Ice-core Project (EGRIP)
Coverage:
Median Latitude: 75.998571 * Median Longitude: -42.100000 * South-bound Latitude: 75.100000 * West-bound Longitude: -51.060000 * North-bound Latitude: 77.450000 * East-bound Longitude: -35.980000
Date/Time Start: 1996-07-01T00:00:00 * Date/Time End: 2009-08-20T00:00:00
Event(s):
EGRIP (EastGRIP) * Latitude: 75.630000 * Longitude: -35.980000 * Location: Greenland * Method/Device: Ice drill (ICEDRILL)
EGRIP_2017 * Latitude: 75.630000 * Longitude: -35.980000 * Location: Greenland * Campaign: GL-Land_2017_EGRIP * Basis: AWI Arctic Land Expedition * Method/Device: Ice drill (ICEDRILL)
EGRIP_2018 * Latitude: 75.630000 * Longitude: -35.980000 * Location: Greenland * Campaign: GL-Land_2018_EGRIP * Basis: AWI Arctic Land Expedition * Method/Device: Ice drill (ICEDRILL)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
10 datasets

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Datasets listed in this bundled publication

  1. Mojtabavi, S; Wilhelms, F; Cook, E et al. (2020): Acidity measured with the Electrical Conductivity Method (ECM) on the EGRIP ice core (down to 1383.84 m depth), converted to hydrogen ion concentration. https://doi.org/10.1594/PANGAEA.922199
  2. Mojtabavi, S; Wilhelms, F; Cook, E et al. (2020): Interpolated time scale for the ice with GICC05 ages for each bag depth (0.55 m segments) of the EGRIP core in the 13.7 - 1383.8 m depth interval. https://doi.org/10.1594/PANGAEA.922393
  3. Mojtabavi, S; Wilhelms, F; Cook, E et al. (2020): Specific conductivity measured with the dielectric profiling (DEP) technique on the EGRIP ice core, 13.77-1383.84 m depth. https://doi.org/10.1594/PANGAEA.919313
  4. Mojtabavi, S; Wilhelms, F; Cook, E et al. (2020): Permittivity measured with the dielectric profiling (DEP) technique on the EGRIP ice core, 13.77-1383.84 m depth. https://doi.org/10.1594/PANGAEA.922138
  5. Mojtabavi, S; Wilhelms, F; Cook, E et al. (2020): Match points between the EGRIP core and the NGRIP1 core and corresponding GICC05 ages. https://doi.org/10.1594/PANGAEA.922348
  6. Mojtabavi, S; Wilhelms, F; Cook, E et al. (2020): Match points between the EGRIP core and the NGRIP2 core and corresponding GICC05 ages. https://doi.org/10.1594/PANGAEA.922350
  7. Mojtabavi, S; Wilhelms, F; Cook, E et al. (2020): Specific conductivity measured with the dielectric profiling (DEP) technique on the NEEM ice core (down to 1493.295 m depth). https://doi.org/10.1594/PANGAEA.922193
  8. Mojtabavi, S; Wilhelms, F; Cook, E et al. (2020): Permittivity measured with the dielectric profiling (DEP) technique on the NEEM ice core (down to 1493.295 m depth). https://doi.org/10.1594/PANGAEA.922195
  9. Mojtabavi, S; Wilhelms, F; Cook, E et al. (2020): Specific conductivity measured with the dielectric profiling (DEP) technique on the NGRIP1 ice core (down to 1371.69 m depth). https://doi.org/10.1594/PANGAEA.922191
  10. Mojtabavi, S; Wilhelms, F; Cook, E et al. (2020): Permittivity measured with the dielectric profiling (DEP) technique on the NGRIP1 ice core (down to 1371.69 m depth). https://doi.org/10.1594/PANGAEA.922192