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Authors: Wright, T. E.*
Burton, M.*
Pyle, D. M.*
Caltabiano, T.*
Title: Scanning tomography of SO2 distribution in a volcanic gas plume
Title of journal: Geophysical Research Letters
Series/Report no.: /35 (2008)
Publisher: American Geophysical Union
Issue Date: 10-Sep-2008
DOI: 10.1029/2008GL034640
Keywords: tomography
Abstract: Two-dimensional cross sections of the sulphur dioxide (SO2) distribution in the volcanic gas plume of Mt. Etna were reconstructed using tomographic techniques. The data for these projections were generated by a network of five automated scanning spectrometers, positioned on the flanks of the volcano. These measure slant-column amounts of SO2 at 105 different angles, every four minutes. Stable wind conditions allow the plume to be monitored on 82% of days. A time-series of plume cross sections was computed, revealing the potential of this method to track variations in plume position and structure on timescales of minutes to hours, a result of potential importance for air traffic and civil defence in case of eruption, when copious amounts of fine ash can be transported.
Appears in Collections:04.08.07. Instruments and techniques
04.08.01. Gases
04.08.06. Volcano monitoring
Papers Published / Papers in press

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