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Estimate of carbonyl sulfide (OCS) volcanic source strength deduced from OCS/CO2 ratios in volcanic gases
Author(s) -
Belviso Sauveur,
Nguyen Ba Cuong,
Allard Patrick
Publication year - 1986
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl013i002p00133
Subject(s) - fumarole , volcano , carbonyl sulfide , atmospheric sciences , geology , environmental science , mineralogy , geochemistry , chemistry , sulfur , organic chemistry
Measurements of the concentration ratio of OCS and CO2 were made in fumaroles of several volcanoes in Italy and Nicaragua. The values obtained, together with previous published data, demonstrate that the OCS/CO2 ratio is positively correlated with the emission temperature of the gases. It ranges from 10 −7.1 to 10 −2.7 at the Vulcano (90°C) and Erta'Ale (1130°C) volcanoes, respectively. The global OCS volcanic source strength, deduced from SO2 emission rates, CO2/SO2 and OCS/CO2 ratios in volcanic gases, is estimated to be in the range 6‐90 ×10 9 gOCS per year.