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http://hdl.handle.net/2122/4728
Authors: | Wright, T. E.* Burton, M.* Pyle, D. M.* Caltabiano, T.* |
Title: | Scanning tomography of SO2 distribution in a volcanic gas plume | Journal: | Geophysical Research Letters | Series/Report no.: | /35 (2008) | Publisher: | American Geophysical Union | Issue Date: | 10-Sep-2008 | DOI: | 10.1029/2008GL034640 | Keywords: | tomography SO2 DOAS |
Subject Classification: | 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 |
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: | Article published / in press |
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