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Space- and ground-based measurements of sulphur dioxide emissions from Turrialba Volcano (Costa Rica)

Space- and ground-based measurements of sulphur dioxide emissions from Turrialba Volcano (Costa... Remotely sensed measurements of sulphur dioxide (SO2) emitted by Turrialba Volcano (Costa Rica) are reported for the period September 2009–January 2011. These measurements were obtained using images from Advanced Spaceborne Thermal Emission and Reflexion radiometer, Ozone Monitoring Instrument and a ground-based UV camera. These three very different instruments provide flux measurements in good agreement with each other, which demonstrate that they can be integrated for monitoring SO2 fluxes. Fluxes from Turrialba increased fourfold in January 2010, following a phreatic explosion that formed a degassing vent in the W crater of Turrialba. Since then, the SO2 flux has remained high (30–50 kg/s) but seems to be showing a slowly decreasing trend. We interpret this evolution as the start of open vent degassing from a recently intruded magma body. The opening of the degassing vent decreased the confining pressure of the magma body and allowed the gases to bypass the hydrothermal system. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bulletin of Volcanology Springer Journals

Space- and ground-based measurements of sulphur dioxide emissions from Turrialba Volcano (Costa Rica)

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References (50)

Publisher
Springer Journals
Copyright
Copyright © 2012 by Springer-Verlag
Subject
Earth Sciences; Sedimentology; Geophysics/Geodesy; Geology; Mineralogy
ISSN
0258-8900
eISSN
1432-0819
DOI
10.1007/s00445-012-0631-z
Publisher site
See Article on Publisher Site

Abstract

Remotely sensed measurements of sulphur dioxide (SO2) emitted by Turrialba Volcano (Costa Rica) are reported for the period September 2009–January 2011. These measurements were obtained using images from Advanced Spaceborne Thermal Emission and Reflexion radiometer, Ozone Monitoring Instrument and a ground-based UV camera. These three very different instruments provide flux measurements in good agreement with each other, which demonstrate that they can be integrated for monitoring SO2 fluxes. Fluxes from Turrialba increased fourfold in January 2010, following a phreatic explosion that formed a degassing vent in the W crater of Turrialba. Since then, the SO2 flux has remained high (30–50 kg/s) but seems to be showing a slowly decreasing trend. We interpret this evolution as the start of open vent degassing from a recently intruded magma body. The opening of the degassing vent decreased the confining pressure of the magma body and allowed the gases to bypass the hydrothermal system.

Journal

Bulletin of VolcanologySpringer Journals

Published: Jun 21, 2012

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