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Merapi volcano (Central Java, Indonesia) - Smithsonian / USGS Weekly Volcanic Activity Report for 9 December-15 December 2020 (New Activity / Unrest)

Wed, 9 Dec 2020, 06:00
06:00 AM | BY: VN
BPPTKG reported that during 4-10 December white emissions from Merapi rose as high as 400 m above the summit. Rock avalanches traveled around 200 m down the Lamat drainage on the W flank. A comparison of photos taken on 29 November and 8 December showed some morphological changes in the summit area; drone footage from 5 December revealed no new lava dome material in the summit crater.
Seismic activity was less intense than the previous week. Electronic Distance Measurement (EDM) data continued to measure a distance shortening between points in the NW at a rate of 9 cm per day. The Alert Level remained at 3 (on a scale of 1-4).

Source: Balai Penyelidikan dan Pengembangan Teknologi Kebencanaan Geologi (BPPTKG)
From: Global Volcanism Program, 2020. Report on Merapi. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 9 December-15 December 2020. Smithsonian Institution and US Geological Survey.

Previous news

Wed, 2 Dec 2020, 06:00
BPPTKG and PVMBG reported that during 27 November-8 December white emissions from Merapi rose as high as 600 m above the summit. Rock avalanches were heard, though not visually confirmed due to weather conditions. A comparison of photos taken on 26 and 29 November showed no morphology changes in the summit area. ... Read all
Thu, 26 Nov 2020, 10:13
The lava dome of Merapi volcano (image: @merapi_uncover/twitter)
PVMBG reported that the activity of the volcano continues at seismic elevated levels over the past month. The seismic instruments detected approx. 490 volcano-tectonic earthquakes. ... Read all
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