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Merapi volcano (Java, Indonesia): pyroclastic flow followed partially collapse of lava dome

Thu, 12 May 2022, 03:41
03:41 AM | BY: MARTIN
The block-and-ash flow from Merapi volcano yesterday (image: PVMBG)
The block-and-ash flow from Merapi volcano yesterday (image: PVMBG)
Thermal anomaly detected in the lava dome at Merapi volcano as seen from the satellite on 3 May (image: Sentinel 2)
Thermal anomaly detected in the lava dome at Merapi volcano as seen from the satellite on 3 May (image: Sentinel 2)
The extrusive activity of the volcano continues.
A visible glow and gas, steam and a small amount of ash emissions from satellite image on 3 May show fresh viscous magma rising into the lava dome within the summit crater.
Continuing magma accumulation into it made the lava dome prone to collapse resulting in a block-and-ash flow yesterday afternoon.
The pyroclastic flow traveled over the southwestern slope reaching length of 1,800 meters from the summit.
The event was detected on a seismic signal with maximum amplitudes of 27 mm and a duration of 149 seconds.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi volcano activity update 11 May 2022

Previous news

Thu, 5 May 2022, 06:42

Merapi volcano (Central Java) - Smithsonian / USGS Weekly Volcanic Activity Report for 27 April-3 May 2022 (Continuing Activity)

BPPTKG reported that the eruption at Merapi continued during 22-28 April. The heights and morphologies of the SW lava dome and the central lava dome were unchanged from the previous week, and seismicity remained at high levels. As many as 102 lava avalanches traveled a maximum of 2 km, mostly down the Bebeng drainage on the SW flank. ... Read all
Fri, 29 Apr 2022, 07:04

Merapi (Indonesia) - Smithsonian / USGS Weekly Volcanic Activity Report for 20 April-26 April 2022

BPPTKG reported that the eruption at Merapi continued during 15-21 April. The heights and morphologies of the SW lava dome and the central lava dome were unchanged from the previous week, and seismicity remained at high levels. As many as 150 lava avalanches traveled a maximum of 2 km mostly down the Bebeng drainage on the SW flank. ... Read all
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Merapi volcano
Stratovolcano 2968 m / 9,737 ft
Central Java, Indonesia, -7.54°S / 110.44°E
Current status: erupting (4 out of 5) Merapi volcano eruptions:
1548, 1554, 1560, 1584, 1586(?), 1587, 1658, 1663, 1672, 1678, 1745, 1752, 1755, 1768, 1791, 1797, 1807, 1810, 1812-22, 1822-23, 1828, 1832-36, 1837-38, 1840, 1846, 1848(?), 1849, 1854(?), 1861, 1862-64, 1865-71, 1872 (large vulcanian-subplinian eruption VEI:4) , 1872-73, 1878-79, 1883-84, 1885-87, 1888, 1889, 1891-92, 1893, 1894, 1897, 1902, 1902-04, 1905, 1906-07, 1908, 1909-13, 1915, 1918, 1920-21, 1922, 1923(?), 1924, 1930-31, 1932, 1933-35, 1939-40, 1942-45, 1948, 1953-58, 1961, 1967-1970, 1971(?), 1972-85, 1986-90, 1992-2002, April-July 2006, Oct 2010-2011 Feb, 2018 (May), late 2018 - ongoing
Typical eruption style
Highly explosive. Large Plinian eruption every few 1000 of years (the last ones at about 1000 BP and 2000 BP), sometimes with associated flank collapse. Growth of lava domes, pyroclastic flows.

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