Publication Date:
2023-01-19
Description:
The simultaneous quantitative determination of two-dimensional bromine monoxide (BrO) and sulphur dioxide (SO2) distributions in volcanic gas plumes is described. Measurements at the fumarolic field on the island Vulcano (autumn 2004) and in the plume of Mt. Etna volcano (spring 2005) were carried out with an Imaging DOAS instrument. The SO2 fluxes of several fumaroles were
estimated from two-dimensional distributions of SO2. Additionally, the first two-dimensional distributions of BrO within
a volcanic plume were successfully retrieved. Slant column densities of up to 2.6×1014 molecules per square centimetre
were detected in the plume of Mt. Etna. The investigation of the BrO/SO2 ratio, calculated from the two-dimensional
distributions of SO2 and BrO, shows an increase from the centre to the edge of the volcanic plume. These results have
significance for the involvement of ozone during BrO formation processes in volcanic emissions.
Description:
Published
Description:
753-765
Description:
2.4. TTC - Laboratori di geochimica dei fluidi
Description:
JCR Journal
Description:
reserved
Keywords:
DOAS
;
Imaging DOAS
;
Volcanic plume
;
BrO
;
SO2
;
01. Atmosphere::01.01. Atmosphere::01.01.07. Volcanic effects
;
01. Atmosphere::01.01. Atmosphere::01.01.08. Instruments and techniques
;
04. Solid Earth::04.08. Volcanology::04.08.01. Gases
;
04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring
;
04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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