Shishaldin volcano (Aleutian Islands, Alaska): weekly volcanic activity report 13-19 Nov 2019

Чт, 21 ноя 2019, 08:08
Lava flow extending down the flank of the volcano visible from satellite on 16 November (image: Sentinel 2)
Lava flow extending down the flank of the volcano visible from satellite on 16 November (image: Sentinel 2)
The Alaska Volcano Observatory reported that the eruption at the volcano continued at variable levels during 13-19 November.
Seismicity increased during 13-14 November and elevated surface temperatures were visible in satellite and webcam data. Minor ash emissions were visible and likely resulting from spatter cone collapses. Lava and debris flows had not advanced since 8 November; lava flows had traveled as far as 1.2 km and a large branched network of debris flows extended at least 5.5 km northeast.
Strongly elevated surface temperatures and a steam plume drifting more than 100 km southeast were visible on 15 November. An incandescent lava flow on the northeastern flank was recorded in webcam images.
Activity during 17-18 November was characterized by low seismic tremor and weakly-to-moderately elevated surface temperatures, consistent with cooling lava flows.
Seismicity and surface temperatures again increased during 18-19 November.
The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.
Source: Smithsonian / USGS Weekly Volcanic Activity Report 13-19 Nov 2019

Предыдущие новости

Wed, 20 Nov 2019, 08:35
Lava flow extending down the flank of the volcano visible from satellite (image: Sentinel 2)
The Alaska Volcano Observatory (AVO) reported that during the last 24 hours seismicity at the volcano increased to a level similar to that observed during other eruptive periods over the past few weeks, consistent with the resumption of eruptive activity at the volcano. ... Read all
Wed, 20 Nov 2019, 06:00
AVO reported that increased seismicity and higher surface temperatures at Shishaldin during 19-20 November indicated elevated eruptive activity. Seismicity abruptly dropped at 0340 on 20 November and remained low, heralding another pause in activity. Tremor and surface temperatures remained low through 23 November. ... Read all
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