Variability of Arctic climate and sea ice over the past millennium: implications for ice cap mass balance


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  • EC data from individual core segments has been concatenated into a record spanning the whole core.
  • The first version of a timescale has been determined using dayted volcanic events evident in the EC record as tie points.
  • Density profiles from digital photography of the core segments has been amalgamated and converted into a continuous density record for comparison with the density records produced during the core melt process, during which the depth of core melted to produce each 5ml sample was used to calculate continuous density measurements.
  • A full sequence of coarse resolution (10cm depth segments) δ18O record has been produced by the collaborating research group at the Neils Bohr Institute in Copenhagen.
  • The melt layer stratigrpahy of the core, which was logged by R Koerner in the field, has been digitised and concatenated into a full core record.
  • Major ion analysis on the top 20m of the long core has been completed at the University of Alberta and this data is being combined with analysis of the two previously obtained short cores from the PoW.