Stromboli, the ‘lighthouse of the Mediterranean’, is known for its low-energy but persistent explosive eruptions, behaviour that is known scientifically as Strombolian activity. Occasionally, however, more intense and sudden explosions occur, most recently in July and August last year (2019). These are known as ‘Strombolian paroxysms’. During such events several of Stromboli’s craters are active simultaneously and much greater volumes of pyroclastic materials are erupted than is usual for the volcano.
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Source: ScienceDaily