27 Dec New VONAs issued, reversal of uplift near the eruptive centre, and an earthquake felt across the Canary islands
New VONAs issued, reversal of uplift near the eruptive centre, and an earthquake felt across the Canary islands
Phreatomagic activity is reduced and strombolian activity continues.
“Since the last geological report, 138 earthquakes have been located in the area. 21 of these earthquakes have been felt by the population. Of all the earthquakes located, 78 have a magnitude equal to or greater than 3.0 mbLg. The largest earthquake is the one located at 4:25 p.m. on the 26th,
with a magnitude of 4.9 mbLg and a depth of 34 km, which has been felt with a maximum intensity of IV on the island of La Palma and
with less intensity on the islands of Tenerife, La Gomera and El Hierro. 25 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 amplitude of the volcanic tremor signal is maintained at medium high levels, with intensifying pulses.
The island’s network of permanent GNSS stations shows that both the elevation and the southern deformation recorded at station LP03, which is the closest to the eruptive centres, are reversing. At the most remote stations, a slight deflation is maintained, possibly related to deep seismicity.
The column height at 07:45 UTC reaches 3,400 m.Throughout yesterday (10/26/2021) two VONAs (Volcano Observatory Notice for Aviation) were issued; one at 09:30 UTC, due to the decrease in the height of the volcanic ash cloud, reporting
that the maximum height of the cloud was 2200 m above sea level, and another at 16:45 UTC, due to the increase in the height of the
eruptive column, which reached a value of 3300 m above sea level.”
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