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Science 11 August 2006:
Vol. 313. no. 5788, p. 729
DOI: 10.1126/science.313.5788.729f
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Mount Etna is one of the most active volcanoes in the world, with ongoing magma intrusions and a recent increase in explosive eruptions. In late 2002, a particularly violent outburst occurred, with fire fountains and tephra fallout. Patanè et al. (p. 821; see the Perspective by Foulger) caught the 2002 Etna eruption in seismic data from a dense network of receivers and were able to map changes in three-dimensional shear and pressure-wave velocity during the pre-eruptive and eruptive periods. Anomalous low-velocity zones appeared just before the eruption that were indicative of rising gas-rich magma within the volcano.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)