Earthquake frequency is increasing but volcanic tremor has decreased to low mean levels with no intensification pulses.

Earthquake frequency is increasing but volcanic tremor has decreased to low mean levels with no intensification pulses.

Rapid increase in phreatomagmatic activity

Data type: Geological report

Groups: Seismic activity – Volcanic tremor – Subsidence – Directional deformation – Plume height – Earthquakes felt

Source: Noticias e informe mensual de vigilancia volc√°nica

Since the last statement, 62 earthquakes have been located in the area. 7 of these earthquakes have been felt by the population. The largest earthquake was the one that occurred at 17:07 (UTC) yesterday, with a magnitude of 4.6 mbLg at 37 km depth and felt with intensity IV on the island of La Palma. 8 seconds later another earthquake of magnitude 4.5 was located in the same area 38 km deep, thus forming a “double” earthquake. In the period considered, 7 earthquakes have been located at a depth of around 30 km, and the rest of the hypocenters of the period are located at a shallower depth, around 12 km. The amplitude of the volcanic tremor signal has decreased substantially, with low mean levels and no intensification pulses. The southwest deformation continues. In the rest of the stations, a slight deflation is maintained, possibly related to deep seismicity. Using a calibrated image, IGN estimates a column height of 2,500 m and a southwest direction is estimated at 08:45 UTC.

This video taken on the 8th of November shows the extent of the lava flow field, as an active flow flows towards the sea.

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