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Marapi volcano (Indonesia) - Smithsonian / USGS Weekly Volcanic Activity Report for 31 May-6 June 2017 (New Activity / Unrest)

Wed, 31 May 2017, 06:00
06:00 AM | BY: VN
PVMBG reported four explosions at Marapi on 4 June, each lasting less than one minute. The explosions occurred at 1001, 1011, 1256, and 1550, and produced dense ash-and-steam plumes that rose 300 m, at least 700 m, 200 m, and 250 m above the crater, respectively. The plumes drifted E.
Ejected bombs were deposited around the crater. Seismicity increased after the explosions. Minor ashfall was reported in the Pariangan District (8 km SSE), Tanah Datar Regency.
The Alert Level remained at 2 (on a scale of 1-4). Residents and visitors were advised not to enter an area within 3 km of the summit.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
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From: Global Volcanism Program, 2017. Report on Marapi. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 31 May-6 June 2017. Smithsonian Institution and US Geological Survey.

Previous news

Wed, 20 Jan 2016, 06:00

Marapi volcano (Indonesia) - Smithsonian / USGS Weekly Volcanic Activity Report for 20 January-26 January 2016 (Continuing Activity)

PVMBG reported that on most days during periods of clear weather from 1 November 2015 to 19 January 2016 white plumes rose above Marapi as high as 250 m above the crater. A phreatic explosion at 2233 on 14 November generated an ash plume, and ashfall was noted in Panyalaian and Aia Angek on the SW flank. Seismicity fluctuated during 1-18 January; earthquakes indicating emissions, tornillo-type events, and shallow volcanic signals slightly increased. ... Read all
Wed, 18 Nov 2015, 06:00

Marapi volcano (Indonesia) - Smithsonian / USGS Weekly Volcanic Activity Report for 18 November-24 November 2015 (Continuing Activity)

PVMBG reported that during 1 August-16 November diffuse white plumes rose as high as 150 m above Marapi, inclement weather prevented observations during October and periodically during the other months. Seismicity fluctuated; the number of tremor, tornillo-type, and signals indicating emissions increased. The Alert Level remained at 2 (on a scale of 1-4). ... Read all
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Marapi volcano
Stratovolcano 2891 m (9,485 ft)
Western Sumatra, Indonesia, -0.39°S / 100.46°E
Current status: normal or dormant (1 out of 5) Marapi volcano eruptions:
2011-ongoing, 2004 (Aug), 2001, 2000, 1999, 1987-94, 1984, 1984, 1983, 1982, 1980, 1975-79, 1973, 1970-71, 1968(?), 1967, 1966, 1958, 1958, 1954-57, 1950-52, 1949, 1949, 1943, 1932, 1930, 1929, 1927, 1925, 1919, 1918, 1918, 1917, 1916, 1915, 1913, 1911, 1910, 1907-08, 1905, 1904, 1889, 1888, 1886, 1885, 1883, 1878(?), 1883, 1876-77, 1876, 1871, 1871, 1863, 1861, 1855-56, 1854, 1845, 1833-34, 1822, 1807, 1770
Typical eruption style
Small to moderate sized explosions
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