On 1 December 2011 the West Antarctic Ice Sheet (WAIS) Divide ice-core project reached its final depth of 3405 m. The WAIS Divide ice core is not only the longest US ice core to date, but is also the highest-quality deep ice core, including ice from the brittle ice zone, that the US has ever recovered. The methods used at WAIS Divide to handle and log the drilled ice, the procedures used to safely retrograde the ice back to the US National Ice Core Laboratory (NICL) and the methods used to process and sample the ice at the NICL are described and discussed.
Annals of Glaciology
International Glaciological Society
Digital Object Identifier (DOI)
Souney JM, Twickler MS, Hargreaves GM, Bencivengo BM, Kippenhan MJ, Johnson JA, Cravens ED, Neff PD, Nunn RM, Orsi AJ, Popp TJ, Rhoades JF, Vaughn BH, Voigt DE, Wong GJ and Taylor KC (2014) Core handling and processing for the WAIS Divide ice-core project. Annals of Glaciology, 55(68), 15-26, doi:10.3189/2014AoG68A008