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Research
Infrasound publications
Long-range acoustic observations of the Eyjafjallajökull eruption, Iceland, April-May 2010
Matoza, R., J. Vergoz, A. Le Pichon, L. Ceranna, D. Green, L.G. Evers, M. Ripepe, P. Campus, L. Liszka, T. Kvaerna, E. Kjartansson and A. Höskuldsson, Abstract The April-May 2010 summit eruption of Eyjafjallajökull, Iceland, was recorded by 14 atmospheric infrasound sensor arrays at ranges between 1,700 and 3,700 km, indicating that infrasound from modest-size eruptions can propagate for thousands of kilometers in atmospheric waveguides. The current global infrasound network is significantly more dense and sensitive than any previously operated network and signals from large volcanic explosions are routinely recorded. Because volcanic infrasound is generated during the explosive release of fluid into the atmosphere, it is a strong indicator that an eruption has occurred. Therefore, long-range infrasonic monitoring may aid volcanic explosion detection by complementing other monitoring technologies, especially in remote regions with sparse ground-based instrument networks.
Location of infrasonic stations recording the summit eruption of Eyjafjallajökull. 14 remote infrasonic arrays (green inverted triangles) recorded the summit eruption of Eyjafjallajökull (black dot, 'Eyjaf'), at distances from ~1,745 km (BKNI, UK) to ~3,666 km (IS48, Tunisia). Blue inverted triangles show other stations that did not record the eruption. Color-scale represents number of intersecting mean infrasonic signal backazimuths.
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