Physics
Scientific paper
Nov 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990georl..17.2125k&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 17, Nov. 1990, p. 2125-2128. Research supported by NSF and U.S. Navy.
Physics
21
Aerosols, Antarctic Regions, Chlorine, Ice, Snow, Sulfur Dioxides, Volcanology, Air Pollution, Hydrochloric Acid, Hydrofluoric Acid, Trace Contaminants, Trace Elements
Scientific paper
SO2 emission rates have been measured annually since 1983 at Mount Erebus, Antarctica by correlation spectrometer (COSPEC V). Following a 4 month period of sustained strombolian activity in late 1984, SO2 emissions declined from 230 Mg/day in 1983 to 25 Mg/day and then slowly increased from 16 Mg/day in 1985 to 51 Mg/day in 1987. Nine sets of filter packs containing particle and (Li-7)OH treated filters were collected in the plume in 1986 and analyzed by neutron activation. Using the COSPEC data and measured element/S ratios on the filters, emission rates have been determined for trace gases and metals. HCl and HF emissions in 1983 are inferred to be about 1200 and 500 Mg/day, respectively. Mt. Erebus has therefore been an important source of halogens to the Antarctic atmosphere and could be responsible for excess Cl found in central Antarctica snow.
Finnegan David
Kyle Philip R.
Meeker Kimberley
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