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La Palma eruption update 6th december 2021: New material is being added to the southern lava delta

By Geotenerife 12 months ago
Home  /  VolcanoStories  /  La Palma  /  Day by Day  /  La Palma eruption update 6th december 2021: New material is being added to the southern lava delta
 By Geotenerife  06th Dec 2021

La Palma eruption update 6th december 2021: New material is being added to the southern lava delta

Daily summary

The eruption continues with strombolian activity with variable amounts of gas and ash emission from the main cone, as well as an effusive focus to the west of the main cone that opened up on the 4th of December. The flows from this region have now reached the sea, adding material to the southern lava delta. Elsewhere, lava flow activity continues to the concentrated mainly in lava tubes in the centre of the flow, feeding flow 4. A new Copernicus EMS map, showing lava flow progress until 5th December 07:50 UTC calculates 1,212 ha and 2,881 buildings affected by the flows.

Over the last 24 hours, large cracks were identified in the main cone, close to the now inactive northeast vent. However, according to PEVOLCA these do not seem to compromise the stability of the main cone. Seismicity remained low yesterday, with 36 earthquakes predominantly at <20 km depth, peaking at M3.5. Seismic tremor stayed at low-medium levels, although showed slightly more variability than the past couple of days. Deformation shows no trends in the stations near the eruption and stability elsewhere, except the LP04 station where a deflation signal has been seen.

Air quality throughout the island has improved today, allowing for the first time in a few days for irrigators to access the evacuated zone from both the north and south. SO2 concentrations have been at good and reasonably good at all stations except Tazacorte, Los Llanos de Aridane and Puntagorda, that remained mostly at regular levels. SO2 emissions measured in the volcanic plume however remain ‘high’, although continue a long-term decreasing trend. With the diffusion of the Saharan dust haze of the last two days, PM10 concentrations also decreased, with levels being reasonably good or regular in all stations except La Grama, where concentrations remained unfavourable.

A map of the area affected by the eruption with outlines of the extents of the lava flows on different days being shown by different colour shapes

The latest map of the lava flow extents from the 5th December, showing the progress of the new lava flow to the south generated by the new vents that opened on the 4th to the west of the main cone. This flow has today reached the sea. Image credit: Copernicus EMS

Sources: Government of the Canary Islands, PEVOLCA, Involcan, IGN, DSN, Cabildo La Palma, 112 Canarias, Tolouse VAAC, Copernicus EMS

Lava flows

Earthquakes

Official social media

To see our full social media archive, visit our open data section or click here.

News articles

  • EuroWeekly News – New crack in cone – here
  • Independent – New fissure erupting – here
  • FruitRop – Limited impact of eruption on Canaries platano production – here
  • Mindat – Mineral deposit database for Cumbre Vieja – here
  • Diario de Avisos – Adeje firefighters testimony – here
  • Sur in English – Malaga firefighters testimony – here

To see our full news archive, visit our open data section or click here.

Found a broken web link? We have archived all of our news articles on the WayBack Machine. You can view the pages by 1. pasting the broken link into WayBack Machine and clicking ‘Browse History’ 2. clicking on the latest capture date and then 3. clicking ‘view capture’. Please let us know of any broken web links by contacting us at enquiries@geotenerife.com.

Eruption footage

News and Interviews

Witness Testimonies

Interactive Lava Flow Map

Notes: Use the button in the top right to open the map into full screen mode. Use the legend icon in the top left to see the legend and further information about the map. Click on individual days to see an outline of the lava flows on that day.

Interactive Earthquake Map

click here to enlarge

Notes: The size of the points represents the size of the earthquake, and the colour represents the depth. The map will also only show a certain number of points at once. For ease of use, we recommend you uncheck all dates and the satellite basemap from the legend in the top right, and inspect the earthquakes one day at a time.

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  Day by DayLa PalmaVolcanoStories
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