28 Oct La Palma eruption update 28th october 2021: Over 900 hectares now affected by the lava flows
La Palma eruption update 28th october 2021: Over 900 hectares now affected by the lava flows
The lava emission predominantly feeds three different lava streams, with two of these affecting new ground. One of these is the flow to the south of La Laguna Mountain, which is now 86 m from the cliffs, and the other affecting new ground to the south of the original flows near Camino de Aniceto. The final active flow is feeding the lava delta, which is advancing underwater. The area affected now exceeds 900 ha, with the total width of the lava flows exceeding 2,900 m. Seismicity remains at similar levels to previous days, with high frequencies and magnitudes being recorded in the same area at 10-15km depth. 195 events were recorded, peaking at 4.2 mbLg.
The 10 cm deformation signal seen at the Jedey station closest to the eruption yesterday has now fully reversed, whilst a slight deflation of deep origin continues to be recorded in distal stations. SO2 emissions were slightly lower than previous days continuing a 5-day downward trend in emissions, at 15,000 tons per day, although this is still an underestimated value, whilst the ash and gas plume reached 2600 m. The tremor remains high, with pulses of intensification. Air quality was improved relative to previous days. The daily and hourly thresholds were not exceeded in any of the stations with respect to both SO2 and PM10 concentrations.
Sources: Government of the Canary Islands, PEVOLCA, Involcan, IGN, DSN, Cabildo La Palma, 112 Canarias, Tolouse VAAC, Copernicus EMS
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