Volcanic activity in Canary Islands 2020

[jand]

Description of the area La Palma Fuencaliente where most of the earthquakes are occuring.

''The municipality of Fuencaliente covers the southern tip of the island La Palma. The landscape is dominated by the volcanic ridge Cumbre Vieja. The southernmost volcano on this ridge, Teneguía, last erupted in 1971. The fertile soil is used for growing grapes (malvasia wine) and bananas. The yearly production of wine from its 800 ha of vineyards is 2 million litres.[citation needed] There are salt evaporation ponds near the lighthouse, on the southernmost point of the island. Fuencaliente is located 23 km southwest of the island capital Santa Cruz de la Palma.''


https://upload.wikimedia.org/wikipedia/c...te.svg.png

[jand]

Statement from Involcan.

''New seismic swarm at the Volcano Old Summit (La Palma, Canary Islands). From 21:26 p.m. (Canary Time) yesterday December 23, 2020, the Canary Seismic Network operating the Canary Islands Volcanological Institute (INVOLCAN) is recording a new swarm of small-magnitude seismic Events, under the Old Summit Volcano. So far more than 80 seismic Events have been detected at a depth of more than 20 km.
This new seismic swarm does not pose a danger to residents and visitors to La Palma given the small magnitude and depth of earthquakes. In the short and medium term it also does not reflect a significant change in volcanic activity at Old Summit that since 2017 has experienced 7 seismic swarms including today (1 in 2017, 1 in 2018 and 5 in 2020).
INVOLCAN will continue to update on the evolution of this new seismic swarm at the Volcano Old Summit.''


https://scontent-lht6-1.xx.fbcdn.net/v/t...e=600B380F

[jand]

Translated.

''The National Geographic Institute has detected 281 earthquakes in the last hours in the area near the Cumbre Vieja Volcano, in the south of the island of La Palma, with magnitudes between 1.3 and 2.3 mbLg.

The occurrence of Events of this type in an active volcanic zone is within normality and does not present any risk for normal activity on the island, the IGN has indicated.

The area in which this activity occurs is the same in which similar low-magnitude swarms have occurred in recent months with numerous Events at depths of around 30 kilometers.

Of the 281 earthquakes detected between 9:26 p.m. on Wednesday and 7:01 a.m. this Thursday, 77 have been located.

The IGN seismic network on the island of La Palma is made up of 13 stations that allow real-time monitoring of microseismic activity on the island.''


https://diariodeavisos.elespanol.com/los...yU6UAAHK24

[jand]

Increase in the energy release La Palma.

[jand]

latest update courtesy of Enrique.

Translated.

''DEEP SYSMIC SWARM IN PALM ISLAND, CANARIAS, SPAIN.- 25/12/2020.-Merry Christmas to all first, and active volcanic islands are like this, they like to be noticed. This island has been sleeping or quiet for many years, and although it has had many eruptions in the past, it reminds us that it is active and will have many more future eruptions. What we don't know in a while, but we will. On this occasion the IGN claims to have located 281 Events, of which it has located nearly a hundred signs (94 specifically between magnitude 1.5 and 2.3 (and the minimum with one of 1.3) and that when you analyze them, you can see some interesting things:

1.- When all seismic alignments are made, you see several preferential directions, and highlight 3 alignment that form across at 120 o at a point at about 300 m. south of the volcano summit Old Summit 1949 m high above sea level. These alignments indicate something known to us, are the three dorsal or main axles of activity of this colossus volcanic that rises about 6000 meters above the ocean background.

2.- Although they are deep earthquakes, many look like the volcanic-tectonic type, involving a movement of fluids in depth and that configuration at 120 o indicates a thrust of the same to the surface, upward, which should be noticed slightly at GPS stations in the Island if activity continues for more days.

https://previa.uclm.es/profesorado/egcar...nqTVhCWP98

3.- These earthquakes do not currently involve a short-term eruption, though if a system reactivation, so that if they are increasingly common, they will be indicating that the system is rearmed for a medium-long eruption deadline (1-8 years), although you can stop and nothing can happen, and even have reactivation phases, it is difficult to know what you will do right now, but the range of possibilities is very big, from nothing to an eruption ..

4.- Of the other parameters such as GPS deformation or gasses, it's very difficult to interpret how little there is. In IGN's, GPS do not see significant changes, if any small moves towards the NE (movement of African plaque) that do not occur as accused in the south of the island, and then it is interesting to see how the LP0 3 rising, while the LP0 4 sinks, indicating possible northward magma migration in the west of the island, the rest shows no relevant changes and it's hard to tell with so little data.


We'll see what happens, but it tends to calm down until the next onset in a few days / weeks / months. (Enrique).

[jand]

Cont :

https://scontent-lhr8-1.xx.fbcdn.net/v/t...e=600B79F9

[jand]

The activity is ongoing and the earthquakes are getting more shallow the latest one at 07:38 was actually only 2km deep.

es2020zilxq 26/12/2020 07:38:48 07:38:48 28.6723 -17.7519 2 1.5 mbLg SE SANTA CRUZ DE LA PALMA.ILP


http://www.ign.es/web/resources/volcanol..._KxSOqQ0A8

[jand]

Latest update courtesy of Enrique.

Translated.

''SYSMIC SWARM IN TENERIFE AND CONTINUES LA PALMA WITH OVER 600 REGISTERS, SOMETHING LESS THAN 100 LOCATED, THE LAST A LITTLE MORE CANARIAN SOMERS, SPAIN.- 26/12/2020.-

On the island of Tenerife continues to rattle the phonolithic magmatic camera that is - according to geophysics - under the boiler of Ucanca between 11 and 14 km deep with efforts these days with some earthquakes and small swarms, highlighting a couple of Events, a very deep one 26 km in the mouth zone of Tauce, where the background material of the system would enter and two more lighter 9 and 5 km that would indicate more surface tensions.
Tenerife's volcanic system continues to reactivate slowly for about 4 years and continues with the tran - tran without significant changes at the moment. The magma bag under Vilaflor, more somera has moved little or nothing with some unimportant Earthquake, that is under Adeje, there is another deep and it is also area of entry, which therefore these two deep earthquakes seem to announce more activity in coming weeks and months in the area and maybe some significant swarm (over 100 earthquakes) in Adeje or the Caldera as has been happening since November 2016.

As for the ongoing swarm in La Palma Island, there are now 602 officially registered Events by IGN and about 98 localized. It should be stressed that the last localized earthquakes have a lower depth (25-30 km) than the first (25-35 km), indicating an upward migration of the magma that is intruding the island from the mantle and decreasing the pressure on the deeper levels (lowering the pressure doesn't mean there's less flow in depth) while it's rising to more harsh levels as magma intrudes or progresses to the surface. A most interesting read. Now that is very deep and does not represent any risk, although it will be good to have it controlled, as it should migrate to levels more and more harsh if you have enough energy to do so. (Enrique)
Earthquake maps of the island of Tenerife at 3, 15 and 90 days:

https://www.ign.es/web/resources/volcano...xvYVr-59JU

Earthquake maps of Palm Island at 3, 15 and 90 days:

https://www.ign.es/web/resources/volcano...EyeFOCzPKY

[jand]

https://scontent-lht6-1.xx.fbcdn.net/v/t...e=600F3B59

[jand]

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