The structure and chemistry of 94 m Greenland Ice Sheet Project 2 ice

Ian Baker, Daniel Cullen
2002 Annals of Glaciology  
Optical microscopy, X-ray topography, scanning electron microscopy and X-ray spectroscopy have been used for microstructural analysis of ice from 94 m depth from Greenland Ice Sheet Project 2. the ice had a high density of air bubbles, a 2 mm grain-size and contained a high dislocation density in most grains (>1×1010 m–2), although a few lower-dislocation-density grains were present. the main impurities, Na and Cl, were found in several grain boundaries and triple points, often as filaments.
more » ... often as filaments. Na and Cl were also found in the lattice, but to a lesser extent, along with S, Mg, K and Ca. These observations are compared to previous studies of dislocations and impurity locations in natural ice.
doi:10.3189/172756402781816627 fatcat:jnpdwqhljzadpb5suqkwrccq5m