Etna volcano (Italy): earthquake swarm beneath eastern flank, ongoing lava activity
So, 24. Jan 2021, 13:5313:53 PM | VON: T
Earthquakes today under Etna, locations (top) and time vs depth plot (below)
This morning, a swarm of small earthquakes occurred beneath the eastern flank of the volcano. The seismic activity started early this morning at around 6 am local time.
View of strombolian activity from New SE crater last night (image: INGV webcam on Montagnola)
So far, almost 50 quakes have been recorded with magnitudes of up to 2.3, and the activity seems to be continuing.
Most quakes were located at depth between 10-20 km and are arranged in a east-west trending linear area between the summit and Giarre town, mostly centered below the town of Sant'Alfio.
The location of quakes in a E-W pattern suggests that a fault zone has been activated in this area. Whether it is associated with magma intrusion along a corresponding dyke at depth, or caused purely by tectonic movements, or a combination of both, is difficult to say.
At the surface, Etna continues to be very active. When visibility allowed, glow and strombolian-type explosions could be seen from the New SE crater as well as Voragine central crater, and possible other vents as well. Volcanic tremor remains elevated, reflecting the current above-average supply of magma reaching the vents as lava.
Mi, 20. Jan 2021, 08:29
Last night's activity of vigorous and near-constant strombolian explosions from the eastern summit vent of the New SE crater continued to increase, but judging from webcam imagery, it did not quite reach the intensity of previous paroxysms with true lava fountains. ... alles lesen
Mi, 20. Jan 2021, 00:17
During the past hours, activity from the New SE crater has been increasing significantly and is currently showing intense and near-constant strombolian explosions. It seems very much as if it is heading for another paroxysm in the next hours if not less. ... alles lesen
Di, 19. Jan 2021, 16:26
Yesterday evening, activity at the volcano increased quickly into another phase of lava fountaining, known as paroxysm, from the New SE crater. ... alles lesen
Di, 19. Jan 2021, 06:00
Mo, 18. Jan 2021, 21:00