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La Palma volcano (Spain) - Smithsonian / USGS Weekly Volcanic Activity Report for 15 December-21 December 2021 (Continuing Activity)

Mi, 15. Dez 2021, 16:14
16:14 PM | VON: VN
Observations at La Palma on 15 December showed no lava flowing from vents at the W base of the main cone, from tubes, or at the lava delta in the Las Hoyas area. During 15-20 December tremor levels were at background levels and seismicity was very low at all depths. Sporadic gas emissions rose from the vents and from cooling lava flows.
Small collapses from the walls of the main and secondary cone craters were visible through the week. Sulfur dioxide levels varied between extremely low and medium values (less than 5 to 999 tons per day) consistent with a cooling and degassing lava flow field. Even though air quality levels had improved overall, a few measurements of diffuse carbon dioxide emissions showed levels around 9 times average background.
Authorities warned the public to exercise caution in areas surrounding the flow field due to volcanic gases in the area and noted that lava flows, although cooling, remained at high temperatures.

Sources: Instituto Volcanológico de Canarias (INVOLCAN), Gobierno de Canaries, Instituto Geográfico Nacional (IGN)
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From: Global Volcanism Program, 2021. Report on La Palma. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 15 December-21 December 2021. Smithsonian Institution and US Geological Survey.

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Mi, 15. Dez 2021, 06:42
The eruption at La Palma continued during 8-13 December, characterized by sporadic Strombolian activity, occasional lava jetting, advancing and sometimes branching lava flows, and daily ash-and-gas emissions. Seismicity was low at depths of 10-15 km and very low at depths of 30-40 km. Volcanic tremor levels were also generally low, though they fluctuated near the end of the week concurrent with explosive activity. ... Read all
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