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Karangetang volcano (Siau Island, Indonesia): increased lava effusion

Tue, 18 Aug 2015, 13:15
13:15 PM | BY: T
Thermal signal from Karangetang volcano (MIROVA)
Thermal signal from Karangetang volcano (MIROVA)
Thermal signals from the volcano have been increasing over the past days, suggesting that the lava output at the summit crater has increased. This could again again to dangerous pyroclastic flows if the lava dome or lava flows become unstable on the steep upper flanks of the volcano. Such flows can easily reach inhabited areas.
During the past months (at least since May) the volcano has been constantly active with a weakly alimented lava flow on the upper southern flank, which has been generating frequent incandescent rock falls. It decreased during July, but a new phase of more violent activity might be in the making now and could make new evacuations necessary. Alert level of the volcano remains at 3 (out of 4).

Previous news

Wed, 29 Jul 2015, 06:00

Karangetang volcano (Siau Island, Indonesia) - Smithsonian / USGS Weekly Volcanic Activity Report for 29 July-4 August 2015 (Continuing Activity)

Based on observations conducted at the Karangetang Volcano Observation Post in the village of Salili, PVMBG reported that white plumes rose as high as 250 m above the Main Crater and 25 m above Crater II during 22-29 July; foggy conditions occasionally prevented views. Incandescence from the lava dome was observed at night. Incandescent avalanches from the fronts of 150-m-long lava flows traveled as far as 2.5 km E down the Batuawang and Kahetang drainages. ... Read all
Wed, 22 Jul 2015, 06:00

Karangetang volcano (Siau Island, Indonesia) - Smithsonian / USGS Weekly Volcanic Activity Report for 22 July-28 July 2015 (Continuing Activity)

Based on observations conducted at the Karangetang Volcano Observation Post in the village of Salili, PVMBG reported that white plumes rose as high as 200 m above the Main Crater and 25 m above Crater II during 15 and 19-22 July; foggy conditions prevented views during 13-14 and 16-18 July. Incandescence from the lava dome was observed at night. Incandescent avalanches from the fronts of 75-m-long lava flows traveled as far as 2.3 km E down the Batuawang and Kahetang drainages. ... Read all
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Karangetang volcano
Stratovolcano 1784 m (5,853 ft)
Siau Island, Sangihe Islands, Indonesia, 2.78°N / 125.4°E
Current status: restless (2 out of 5) Karangetang volcano eruptions:
1675, 1712, 1825, 1864, 1883, 1886, 1887, 1892, 1899, 1900, 1905, 1921, 1922, 1924, 1926, 1930, 1930, 1935, 1940, 1940, 1941, 1947, 1947, 1948, 1949, 1952, 1953, 1961, 1961, 1962-62, 1965-67, 1967, 1970-71, 1972-76, 1976-77, 1978, 1979, 1980, 1982, 1983-88, 1989, 1991-93, 1995, 1996-97, 1998, 1999-2003, 2004-2005. 2008-9, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2018-ongoing
Typical eruption style
Explosive. Formation of lava domes and pyroclastic flows.

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