1993 was characterized by three paroxysmal phases at Stromboli: two (February and October) consisted of a series of violent explosions, the third (May) of strong Strombolian activity, accompanied by a small lava flow. This paper investigates the characteristics of the tremor before, during and after these paroxysmal phases. The three phases analysed mark a considerable change in the dynamics of the volcano. The energy content drops to very low values after the periods of intense activity. A continuous monitoring of the spectral content of volcanic tremor on Stromboli can be a useful tool to identify the beginning of an instability which may lead to a paroxysmal phase.

Spectral analysis of volcanic tremor associated with the 1993 paroxysmal events at Stromboli

CASOLO, SIRO;
1996

Abstract

1993 was characterized by three paroxysmal phases at Stromboli: two (February and October) consisted of a series of violent explosions, the third (May) of strong Strombolian activity, accompanied by a small lava flow. This paper investigates the characteristics of the tremor before, during and after these paroxysmal phases. The three phases analysed mark a considerable change in the dynamics of the volcano. The energy content drops to very low values after the periods of intense activity. A continuous monitoring of the spectral content of volcanic tremor on Stromboli can be a useful tool to identify the beginning of an instability which may lead to a paroxysmal phase.
VOLCANO INSTABILITY ON THE EARTH AND OTHER PLANETS
1-897799-60-8
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/693896
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