Report on Stromboli (Italy) — 7 July-13 July 2010
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 7 July-13 July 2010
Managing Editor: Sally Kuhn Sennert
Please cite this report as:
Global Volcanism Program, 2010. Report on Stromboli (Italy). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 7 July-13 July 2010. Smithsonian Institution and US Geological Survey.
38.789°N, 15.213°E; summit elev. 924 m
All times are local (unless otherwise noted)
INGV-CT reported that two major explosions from Stromboli were detected by the seismic network. These explosions occurred from the SW crater area on 25 June and from the NE crater area on 30 June. Poor weather conditions prevented visual observations using the web camera monitoring system. The event on 30 June was stronger, with several explosions occurring in a short time. Fallout from incandescent blocks triggered vegetation fires.
Geologic Background. Spectacular incandescent nighttime explosions at this volcano have long attracted visitors to the "Lighthouse of the Mediterranean." Stromboli, the NE-most of the Aeolian Islands, has lent its name to the frequent mild explosive activity that has characterized its eruptions throughout much of historical time. The small, 924-m-high 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 from about 13,000 to 5000 years ago was followed by formation of the modern Stromboli edifice. The active summit vents are located at the head of the Sciara del Fuoco, a prominent horseshoe-shaped scarp formed about 5000 years ago as a result of the most recent of a series of slope failures that extend 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.