INGV reported that during 4-10 July activity at Stromboli was characterized by ongoing explosions from four vents in Area N (North Crater area) and two vents in Area C-S (South-Central Crater area). Infrequent explosions from the N1 vent (Area N) ejected mostly ash, with some course material. The N2 vent (Area N) mostly emitted gases along with occasional explosions and sustained jetting. Material ejected from Area N rose no higher than about 60 m above the vents. No explosions occurred at the S1 and C vents in Area C-S; explosions that were medium-to-low intensity and frequency at the two S2 vents ejected material no higher than about 30 m.

Geological Summary. Spectacular incandescent nighttime explosions at Stromboli have long attracted visitors to the "Lighthouse of the Mediterranean" in the NE Aeolian Islands. This volcano has lent its name to the frequent mild explosive activity that has characterized its eruptions throughout much of historical time. The small island is the emergent summit of a volcano that grew in two main eruptive cycles, the last of which formed the western portion of the island. The Neostromboli eruptive period took place between about 13,000 and 5,000 years ago. The active summit vents are located at the head of the Sciara del Fuoco, a prominent scarp that formed about 5,000 years ago due to a series of slope failures which extends to below sea level. The modern volcano has been constructed within this scarp, which funnels pyroclastic ejecta and lava flows to the NW. Essentially continuous mild Strombolian explosions, sometimes accompanied by lava flows, have been recorded for more than a millennium.

Source: Sezione di Catania - Osservatorio Etneo (INGV)