Features of volcanic tremors on Mt. Etna (Sicily) during the March–August 1983 eruption |
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| Authors: | M Cosentino S Gresta G Lombardo G Patanè M Riuscetti R Schick A Viglianisi |
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| Institution: | (1) Istituto di Scienze della Terra, Università di Catania, Italy;(2) CNR-Istituto Internazionale di Vulcanologia, Catania, Italy;(3) Istituto di Scienze della Terra, Università di Udine, Italy;(4) Institut für Geophysik, Universität Stuttgart, FRG |
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| Abstract: | The seismic analysis of the volcanic tremors preceding and accompanying the Etnean eruption of March–August, 1983 has shown a significant variation in the spectral content before the beginning of the eruption, the tremor peaks at 1.4 and 1.6 Hz — which might be associated with the feeding pipes of the NE crater (Schick
et al., 1982a) — being the dominant feature of the spectra.A model of eruption mechanism is proposed where a feeder dyke would connect the NE crater with the effusive fracture. |
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