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Merapi volcano (Central Java, Indonesia) - Smithsonian / USGS Weekly Volcanic Activity Report for 16 December-22 December 2020 (New Activity / Unrest)

Wed, 16 Dec 2020, 06:00
06:00 AM | BY: VN
BPPTKG reported that during 12-17 December white emissions from Merapi rose as high as 150 m above the summit. Rock avalanches traveled as far as 1.5 km down the Senowo drainage on the NW flank on 14 December. A comparison of photos taken on 11 and 15 December showed minor morphological changes in the summit area; drone video from 14 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)
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From: Global Volcanism Program, 2020. Report on Merapi. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 16 December-22 December 2020. Smithsonian Institution and US Geological Survey.

Previous news

Wed, 9 Dec 2020, 06:00
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. ... Read all
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
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