The National Geographic Institute (IGN) has reported a new episode of low-frequency seismic activity in the western area of Las Cañadas del Teide, in Tenerife, between Thursday evening and the early hours of Friday morning.
The first two isolated tremors were detected at 7:20pm and again at 12:19am. This was followed by a more sustained period of activity between 1:02am and 3:30am, when a sequence of stronger seismic events was registered.
During this time frame, scientists observed a mix of long-period (LP) events and hybrid events. A total of 48 tremors were picked up by the automatic monitoring system, with 27 of these successfully located.
The seismic activity occurred at depths ranging between 8 and 15 kilometres, with the strongest event reaching a magnitude of 1.9 on the Richter scale. As with previous episodes, the hypocentres were concentrated in the western sector of Las Cañadas under Teide.
Despite the increase in activity overnight, the IGN has stressed that this does not follow the pattern of seismic swarms seen since February, and does not indicate any heightened risk of an eruption in Tenerife in the short or medium term.
As is typical with this type of low-intensity seismic signal, the IGN has also noted that the data remains provisional. Due to the low amplitude of the tremors, figures relating to the number of events, as well as their magnitude and depth, may be subject to revision.
