La Palma, Canary Islands: seismic crisis Sep 2021 - updates | WHAT REALLY HAPPENED

La Palma, Canary Islands: seismic crisis Sep 2021 - updates

The volcanic-seismic crisis continues to evolve. During the past 24 hours, earthquakes have been moving westwards and become shallower, the National Geographic Institute (IGN) reported.

This is likely reflecting continued magma intrusion and migration under the surface, supported also by continued deformation of the surface in the same area as the quakes. In places, the ground has been uplifted by 1.5 cm (almost one inch) already. The likelihood of an eruption has thus increased and the situation is being followed closely, although it is still far from certain whether it will or not result in a new eruption of the volcano.

More than 2000 earthquakes in 4 days

Since the beginning of the seismic series at 3:18 (UTC) on Sep 11th until 8:00 a.m. local time today, 2935 earthquakes have been detected in the southern area of ??the island of La Palma. Of these, 616 were large enough to have their epicenters and depths located. The largest quake occurred today at 06:00 a.m. with a provisional magnitude of 3.9. Anomalies in the seismic attenuation that currently exist under the island of La Palma caused the magnitude to have been overestimated, IGN reported, and revised the magnitude to only 3.5. At any rate, the larger quakes are now being frequently felt and reported by residents who are increasingly worried about the situation under their feet.

Webmaster's Commentary: 

The problem is that the La Cumbre Vieja volcano has a huge slab of material on the western slope that is showing signs of slippage. If a new eruption were to shake that loose and it slid into the ocean, it would generate a mega-tsunami that would impact the entire east cost of north America.

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