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Diaporama

San Miguel volcan éruptions

stratovolcan 2130 m / 6,988 ft
El Salvador, 13.43°N / -88.27°W
Liste des éruptions: 2002, 1997, 1995, 1985-86, 1976-77, 1970, 1967, 1966 (Jul), 1966 (Feb), 1964, 1954, 1939, 1936(?), 1931, 1930, 1929, 1919-20, 1890-91, 1884, 1882, 1867-68, 1862, 1857, 1855, 1854(?), 1844-48, 1819, 1811(?), 1798(?), 1787, 1769, 1762, 1699, 1510 ± 5 years


2002-2006 unrest and seismic activity
Following the small eruption in January 2002, San Miguel volcano remained restless for over 4 years, with periods of increased seismic activity, landslides inside the crater, increased fumarole activity, and lahars triggered by heavy rains. The volcano was on alert several times, but no eruption occurred in this period.

2002 eruption
On 16 January, gas and steam emissions with some ash were observed at San Miguel, reaching a few 100 meters above the summit crater

2000-2001 lahars
A large lahar occurred on 26 August 2000 and damaged houses and a highway north of the volcano. On 6 September 2001, another lahar damaged a highway.

1997 eruption
A small eruption occurred on 31 December 1997 and produced minor ashfall.

1995 eruption
A small eruption occurred on 23 March 1995.

1976-77 eruption
After 6 years of dormancy, San Miguel started erupting on 2 December 1976. The eruption built a new spatter cone in the central crater and continued until 12 December. It paused for 56 days and resumed on 28 February the following year and ended on 1 March.

1970 eruption
An eruption of San Miguel volcano started on 30 March 1970 and lasted until 4 April. It consisted of small ash emissions, sometimes accompanied by loud explosions.
The first ash eruption could be heard 4 km away and produced an ash plume rising 400 m above the crater. Light ashfall occurred at up to 10 km distance.

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