14 Dec La Palma eruption update 14th december 2021: No tremor or surface activity seen for more than 24 hours
La Palma eruption update 14th december 2021: No tremor or surface activity seen for more than 24 hours
Since the cessation of volcanic tremor on the evening on the 13th, it has remained at background levels now for more than 24 hours. No surface activity is seen from the main cone, and the lava flows on the surface are largely inactive. PEVOLCA say this may represent a sign of ‘exhaustion’ of the eruptive process but refuse to rule out a restarting of activity. The number of earthquakes increased yesterday to 91 events, peaking at M3.2. However, some of this increase is due to the fact that there is no tremor, as 56 lower magnitude events (<M2.0) were located which would not have been locatable due to the noise from the tremor in normal eruptive conditions, according to IGN. Seismicity again remains concentrated at intermediate (<20 km) depths. Deformation remains stable throughout the network, as seen for the past week or so.
SO2 emissions from the volcano still remained high however on the 13th when the latest data was collected, although yesterday air quality with respect to SO2 concentrations was good or reasonably good, showing a marked improvement relative to previous days. PM10 levels were also good or reasonably good in all stations aside from Los Llanos de Aridane, where unfavourable levels were recorded at times.
(Above) A video of the main cone on the 14th showing the lack of activity. Video credit: IGN Spain
Sources: Government of the Canary Islands, PEVOLCA, Involcan, IGN, DSN, Cabildo La Palma, 112 Canarias, Tolouse VAAC, Copernicus EMS
Exclusion zone map
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- El País – Volcano comes to a stop – here
- Penn State University – Researcher returns home to study active volcano on La Palma – here
- Independent – Priest and geologist make La Palma nativity scene from volcanic ash – here
- Climate Adaptation Platform – Links between volcanoes and climate – here
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