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Sinabung volcano (Sumatra, Indonesia): Volcanic Alert Level lowered to Level 2

Сб, 21 мая 2022, 23:25
Sinabung hazard map (image: PVMBG)
Sinabung hazard map (image: PVMBG)
The Indonesian Centre of Volcanology and Geological Hazard Mitigation (PVMBG) lowered the alert status from Level 3 to Level 2 valid on 11 May at 21:00 local time.
The volcano is currently calm since 1 January and its activity has been mostly characterized by passive emissions of steam and gas venting about 50-500 meters above the summit crater. The average rate of sulfur dioxide (SO2) emissions was measured at about 250 tonnes/day with a maximum value of 4000 tonnes/day in January.
The seismic activity of the volcano has decreased over the past four months in general.
GPS, EDM and tilt monitoring instruments detected a continuous ground deflation (subsidence) of the edifice during the period.
The active lava dome within the southeastern crater continues to grow at very low rate. Rising of fresh viscous magma into it causes volcanic earthquakes at low intensity.
The current hazards are hot avalanches from the lava dome to tumble down the slopes which may turn develop into very dangerous hot glowing currents (pyroclastic flows). People are advised to avoid the area of 3 km radius from the summit and 4.5 km distance from the SE sector of the edifice.
The last eruption at the volcano occurred on 28 July 2021.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi volcano activity update 21 May 2022

Предыдущие новости

Wed, 18 May 2022, 17:52

Sinabung volcano (Northwestern Sumatra) - Smithsonian / USGS Weekly Volcanic Activity Report for 11 May-17 May 2022 (Continuing Activity)

PVMBG lowered the Alert Level for Sinabung to 2 (on a scale of 1-4) on 11 May, noting that data showed stability at the volcano. During 1 January-17 May gas emissions were frequently visible and detected by instruments; daily averages of sulfur dioxide emissions from passive degassing were below 250 tons per day, though a high value of about 4,000 tons per day was recorded in January, and white plumes of varying densities rose as high as 500 m above the summit. During the previous four months deformation data showed a downward trend and indicated deflation, and the number of deep and shallow volcanic earthquakes signals generally declined. ... Read all
Wed, 25 Aug 2021, 06:00

Sinabung volcano (Indonesia) - Smithsonian / USGS Weekly Volcanic Activity Report for 25 August-31 August 2021 (Continuing Activity)

PVMBG reported that on most days during 25-31 August white gas-and-steam plumes from Sinabung rose as high as 500 m above the summit and drifted in multiple directions. Lava avalanches traveled 700 m down the flanks on 25 August. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to remain outside of the 2-km exclusion zone. ... Read all
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Sinabung вулкан
Стратовулкан 2460 m (8,071 ft)
Sumatra, Indonesia, 3.17°N / 98.39°E
Текущее состояние: беспокойный (2 из 5) Sinabung Вулкан-извержения:
2013-ongoing, 2010
Типичный извержения стиль
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