La Palma volcano update: Eruption continues, tremor rising gradually, more quakes - what it could mean

Wed, 29 Sep 2021, 11:36
11:36 AM | BY: T
Earthquakes under La Palma during the past 48 hours
Earthquakes under La Palma during the past 48 hours
Volcanic tremor amplitude since start of eruption (image: IGN)
Volcanic tremor amplitude since start of eruption (image: IGN)
Current seismic signal PA01 station since this morning (image: IGN)
Current seismic signal PA01 station since this morning (image: IGN)
Ground deformation at LP04 station (IGN)
Ground deformation at LP04 station (IGN)
Since the violent re-start of activity on Monday evening, the eruption has been going on with more or less stable lava output from the vent, and volcanic tremor has been stable. During this morning, a tendency of increasing activity seems to be manifesting itself.
Interestingly, more quakes have started to occur again, mostly at 10-15 km depth under the central part of the volcano. There were 6 quakes of magnitude 3.0 or above and 21 quakes between 2.0 and 3.0. The latest magnitude 3+ quake occurred only 1.5 hours ago, at 11.13 a.m., and was felt again by the local population.
Inflation and ground deformation have picked up as well during the past 12 hours or so, after they had been leveling out in the days before.
What could all this mean? We cannot say for sure, but one possible interpretation could be that the quakes and inflation reflect new magma intruding at depth, from where it might connect to the shallower system and further supply the eruption. It could also lead up to new vents forming, depending on how effective the currently active magma feeding system is to counteract the building pressure underground.
The next days will likely be very interesting to follow!

Previous news

Wed, 29 Sep 2021, 11:06
How close can you get to the eruption? Find some answers on questions about the eruption here. ... Read all
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