Impurity influence on normal grain growth in the GISP2 ice core, Greenland
1996 ◽
Vol 42
(141)
◽
pp. 255-260
◽
Keyword(s):
Ice Core
◽
AbstractIntercept analysis of approximately bi-yearly vertical thin sections from the upper part of the GISP2 ice Core, central Greenland, shows that grain-size ranges increase with increasing age. This demonstrates that something in the ice affects grain-growth rates, and that grain-size cannot be used directly in paleothermometry as has been proposed. Correlation of grain-growth rates to chemical and isotopic data indicates slower growth in ice with higher impurity concentrations, and especially slow growth in “forest-fire” layers containing abundant ammonium; however, the impurity/grain-growth relations are quite noisy. Little correlation is found between growth rate and isotopic composition of ice.
Keyword(s):
1979 ◽
Vol 36
(12)
◽
pp. 1497-1502
◽
Keyword(s):
Keyword(s):
1976 ◽
Vol 86
(3)
◽
pp. 603-608
◽
Keyword(s):