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Soputan volcano (North Sulawesi): seismic crisis triggers eruption warning

Thu, 1 May 2014, 07:29 | BY: T
Seismic crisis at Soputan volcano on the seismograph of SOP station yesterday (VSI)
Seismic crisis at Soputan volcano on the seismograph of SOP station yesterday (VSI)
Evolution of seismicity over the past months (VSI)
Evolution of seismicity over the past months (VSI)
As the 5th volcano in Indonesia currently on orange alert, the alert level of Soputan was raised to "siaga" (or 3 on a scale of 1-4) by VSI this morning. The decision came as a result of a marked increase in seismic activity over the past day.
Seismic activity started to be elevated early this year. The volcano is one of Indonesia's most frequently active and typically erupts every few years, often with only short periods of precursory seismic activity. The last eruption occurred in 2012, and the current crisis could very well lead to a new eruption in the near future.
At the moment, an exclusion zone of 6.5 km radius is in place around the volcano.

Previous news

Wed, 30 Apr 2014, 06:00

Soputan volcano (Sulawesi, Indonesia) - Smithsonian / USGS Weekly Volcanic Activity Report for 30 April-6 May 2014 (New Activity / Unrest)

PVMBG reported that during April diffuse white plumes from Soputan rose at most 100 m. During 30 April-1 May seismic activity significantly increased, characterized by signals indicating deep volcanic earthquakes and avalanches. On 1 May the Alert Level was raised to 3 (on a scale of 1-4). ... Read all
Sat, 15 Jun 2013, 14:36

Soputan volcano (North Sulawesi, Indonesia) activity update: degassing

VSI decreased the alert level back to level 2. The volcano is currently quiet and only degassing. ... Read all
Show more

Background:

The small Soputan stratovolcano on the southern rim of the Quaternary Tondano caldera on the northern arm of Sulawesi Island is one of Sulawesi's most active volcanoes.  The youthful, largely unvegetated volcano rises to 1784 m and is located SW of Sempu volcano.  It was constructed at the southern end of a SSW-NNE trending line of vents.  During historical time the locus of eruptions has included both the summit crater and Aeseput, a prominent NE-flank vent that formed in 1906 and was the source of intermittent major lava flows until 1924.


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Source: GVP, Smithsonian Institution


Soputan volcano
Stratovolcano 1784 m (5,853 ft)
North Sulawesi, Indonesia, 1.11°N / 124.73°E
Current status: normal or dormant (1 out of 5) Soputan volcano eruptions:
1785, 1819, 1833(?), 1845, 1890, 1901, 1906, 1907, 1908-09, 1910, 1911-12, 1913, 1915, 1917, 1923-24, 1947, 1953, 1966-67, 1968, 1970, 1971, 1973, 1982, 1984, 1985, 1989, 1991-96, 2000-03, 2004, 2005, 2006, 2007, 2008, 2011, 2012, 2013, 2015, 2016
Typical eruption style
Explosive, construction of lava domes, pyroclastic flows, strombolian activity.
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