Glaciochemical studies and estimated net mass balances for Rennick Glacier area, Antarctica

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Authors:Boyd, A. , III.; Mayewski, P. A.; Lyons, W. B.; Spencer, M. J.
Volume Title:Annals of glaciology
Source:Symposium on Snow and Ice Chemistry and the Atmosphere, Peterborough, Ontario, Aug. 19-24, 1984. Proceedings; Annals of glaciology. Vol.7. United Kingdom. P.1-6. ISSN: 0260-3055
Publication Date:1985
Note:24 refs. Ant. Acc. No: 33308. CRREL Acc. No: 40002390
Abstract:Two snow and ice cores from the Rennick Glacier area were analyzed for the chemical species: chloride, sodium, reactive silicate, sulfate and nitrate. Core E10 (6.35 m) was taken from Evans Névé. Core M1 (4.35 m) was extracted from the accumulation zone on the central plateau of the Morozumi Range. Cores E10 and M1 span the time periods from 1929 to 1981 and from 1971 to 1981, respectively, as dated using seasonal variations in chloride (E10) and sulfate (M1) concentrations. An estimated net balance of 50 kg/sq m/a was derived for site E10 and of 182 kg/sq m/a for site M1. The difference in net mass balance is explained by elevational differences. Recent increases in sodium, silicate and sulfate at site E10 is linked to decreases in antarctic pack-ice extent for the same period. (Auth.)
Index Terms:Snow--Chemistry; Snow--Mass balance; Ice--Chemistry; Ice--Mass balance; Snow composition; Ice composition; Mass balance; Antarctica--Rennick Glacier
Coordinates:S703000 S703000 E1604500 E1604500
Publication Type:journal article
Record ID:100543
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