A 4.9 magnitude earthquake felt across populations in La Palma, Tenerife, and La Gomera

A 4.9 magnitude earthquake felt across populations in La Palma, Tenerife, and La Gomera

Increased strombolian activity

Group: Geological report
Subgroup: SEIS – VOLTREM – PLUME – SUB – EQPOP
Source: Noticias e informe mensual de vigilancia

Since the last statement, 135 earthquakes have been located in the
area 20 of these earthquakes have been felt by the population,. The earthquake that occurred at 15:34 UTC on the 23rd, with a magnitude of 4.9 mbLg at 38 km depth, up to this moment, is the largest earthquake since the beginning of the eruption, it has been widely felt throughout the island from La Palma and with intensity II, weakly, in some populations on the islands of La Gomera and Tenerife. In the period considered, a total of 9 earthquakes have been located
at depths around 30 km, the rest of the hypocenters of the period are located at a shallower depth, around 12 km. The volcanic tremor signal maintains a high mean amplitude, with intensifying pulses. The column height measured at 07:45 UTC is estimated to be 3,200 m. slight deflation recorded at GNSS stations further away from the eruptive centres is maintained, possibly related to deep seismicity.

This video taken on the 23rd of October shows the continued strombolian activity producing multiple lava flows. Sourced from IGME (2021).

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