The quantification of volcanic gas plumes using thermal IR hyperspectral imaging

The quantification of volcanic gas plumes using thermal IR hyperspectral imaging

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During this presentation, we will discuss different measurements campaign carried out at Stromboli and Etna volcanos (Italy) with researchers from the Université Blaise-Pascal (Clermont-Ferrand, France). The Stromboli volcano is well known for its periodic eruptions of small magnitude containing various proportions of ash, lava and gases. Passive degassing and eruptive phases were analyzed at a relatively high spectral and spatial resolution. Both sulfur dioxide (SO2) and silicon tetrafluoride (SiF4) could be successfully identified within the volcano’s plume from their distinct spectral features. Quantitative chemical maps for both gases are presented in this work. The results show that standoff thermal infrared hyperspectral imaging provides unique insights for a better understanding of volcanic eruptions.