Article ID Journal Published Year Pages File Type
4713809 Journal of Volcanology and Geothermal Research 2007 14 Pages PDF
Abstract

The distribution of bromine monoxide (BrO) and sulphur dioxide (SO2) was measured by ground-based MAX DOAS (scattered light Multi Axis Differential Optical Absorption Spectroscopy) in the plume of five volcanoes:; Soufrière Hills Volcano on Montserrat in May 2002, Masaya volcano in Nicaragua in March 2003, Etna volcano on Sicily in September/October 2003 and August–October 2004, Stromboli volcano in Italy in September 2003, and Villarica in Chile in November 2004. Maximum slant column densities (SCDs) of several 1014 molecules/cm2 of BrO were observed. Bromine monoxide/sulphur dioxide ratios of 10.0 × 10− 4, 0.8 × 10− 4, 4.8 × 10− 4, 2.1 × 10− 4, 2.1 × 10− 4 and 1.3 × 10− 4 were found in the plumes of Soufrière Hills, Masaya, Etna 2003, Etna 2004, Stromboli and Villarica, respectively. Causes for the differences in the BrO/SO2 ratios for the various volcanic sites are discussed.

Related Topics
Physical Sciences and Engineering Earth and Planetary Sciences Geochemistry and Petrology
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