Volcanic activity in Canary Islands 2021

[jand]

Pevolca have raised the alert La Palma to yellow courtesy of update from Enrique.

''YELLOW VOLCANIC SEMAFORROW FOR PALM, CANARIES, SPAIN. 13/09/2021-15:50 h peninsula. Through the PEVOLCA, the yellow alert situation is decreed due to volcanic risk on La Palma Island. I copy the INVOLCAN notice on their Facebook. (Enrique)

′′ In recent years, the Volcano of Old Summit has experienced 10 seismic swarms including the one that began this past Saturday (1 in 2017, 1 in 2018 in 2020 in and 3 in 2021). The last swarm that started at 04:18 p.m. Canary Time on September 11, 2021 currently has more than 400 earthquakes located under Old Summit to depths around 12 km unlike the depth of previous seismic swarms ranging between 20 and 30 km. No doubt the current seismic swarm represents a significant change in the activity of the Volcano Old Summit and is related to a process of magmatic intrusion inside the crust of La Palma Island.
Our geochemical monitoring program for volcanic surveillance in La Palma has allowed us to detect in 2020 (16/09/2020), the highest emission value of helium-3 observed in La Palma over the past 30 years, and after this detection, not only the largest number of seismic swarmers in La Palma since 2017 (7 of a total 10) but also a year before recording the most important seismic swarming of the 10 occurred in La Palma.
For these reasons described above, the PEVOLCA Management has been advised to pass the volcanic light from GREEN to YELLOW position for the Old Summit area, not able to rule out increased seismicity in the coming days depending on the evolution of the activity.
Coming soon we will continue to report the evolution of this seismic swarm.
Keep an eye out for information provided by the relevant Civil Protection authorities.

· ·

[jand]

The swarm is still ongoing there has just been two felt earthquakes over 3.0 magnitude on the island.

EVENT: es2021rztto 2021/09/13 23:10:17 28.5795 -17.8811 6 3.3 S EL PASO.ILP

Updated 2021-09-13 23:45 UTC
RATIO OF INTENSITIES (EMS) AND POPULATIONS
IN WHICH THIS Earthquake HAS BEEN FEELED:
III BARRIAL DE ARRIBA, EL PASO.TF II-III LAS MANCHAS, THE PLAINS OF ARIDANE.TF II-III RETAMAR, THE PLAINS OF ARIDANE.TF II EL PASO.TF II LAS MARTELAS, THE PLAINS OF ARIDANE.TF II THE PLAINS BY ARIDANE.TF


EVENTO: es2021rztxc 2021/09/13 23:14:26 28.5898 -17.8707 7 3.2 S EL PASO.ILP
Actualizado 2021-09-13 23:46 UTC
RELACIÓN DE INTENSIDADES (EMS) Y POBLACIONES
EN LAS QUE SE HA SENTIDO ESTE TERREMOTO:

II-III RETAMAR,LOS LLANOS DE ARIDANE.TF
II-III TENDIÑA,EL PASO.TF
II HERMOSILLA,LOS LLANOS DE ARIDANE.TF
II PUERTO NAOS,LOS LLANOS DE ARIDANE.TF


The depths are also getting shallower.

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

[jand]

The swarm is intensifying I am actually getting an uneasy feeling about all this yes I have been fascinated since 2011 watching mother nature but this is something different and I wish the other islanders  are now made aware  . Yesterday I read someone in Tenerife had no idea this was happening when her son rang to tell her.

The 3.5 mg Earthquake at 06:00 was felt over all the island.


EVENTO: es2021sahhb 2021/09/14 06:00:00 28.5780 -17.8790 9 3.5 S EL PASO.ILP

Actualizado 2021-09-14 09:01 UTC
RELACIÓN DE INTENSIDADES (EMS) Y POBLACIONES
EN LAS QUE SE HA SENTIDO ESTE TERREMOTO:

III CUATRO CAMINOS,LOS LLANOS DE ARIDANE.TF
III DOS PINOS,EL PASO.TF
III EL LLANITO,BREÑA ALTA.TF
III EL PASO.TF
III EL PEDREGAL,LOS LLANOS DE ARIDANE.TF
III EL PILAR,EL PASO.TF
III EL PINAR,TIJARAFE.TF
III JEDEY,LOS LLANOS DE ARIDANE.TF
III LA COSTA,TAZACORTE.TF
III LAS INDIAS,FUENCALIENTE DE LA PALMA.TF
III LOS PALOMARES,LOS LLANOS DE ARIDANE.TF
III MONTAÑA TENISCA,LOS LLANOS DE ARIDANE.TF
III PASO DE ABAJO,EL PASO.TF
III PUERTO NAOS,LOS LLANOS DE ARIDANE.TF
III RETAMAR,LOS LLANOS DE ARIDANE.TF
III SAN ANTONIO,BREÑA BAJA.TF
III SAN NICOLÁS,EL PASO.TF
III TENERRA,EL PASO.TF
III TODOQUE,LOS LLANOS DE ARIDANE.TF
III TRIANA,LOS LLANOS DE ARIDANE.TF
II-III CARDÓN,TAZACORTE.TF
II-III EL BARRIAL,EL PASO.TF
II-III HERMOSILLA,LOS LLANOS DE ARIDANE.TF
II-III LA FAJANA,FUENCALIENTE DE LA PALMA.TF
II-III LAS MANCHAS,LOS LLANOS DE ARIDANE.TF
II-III LOS CANARIOS.TF
II-III LOS PEDREGALES,EL PASO.TF
II-III MALPAÍS DE TRIANA,LOS LLANOS DE ARIDANE.TF
II-III MIRANDA,BREÑA ALTA.TF
II-III TAJUYA,EL PASO.TF
II-III TIGALATE,VILLA DE MAZO.TF
II-III TINIZARA,TIJARAFE.TF
II BOTAZO,BREÑA ALTA.TF
II BREÑA,BREÑA ALTA.TF
II EL PORVENIR,BREÑA ALTA.TF
II LA PORTADA,SANTA CRUZ DE LA PALMA.TF
II LOS BARROS,LOS LLANOS DE ARIDANE.TF
II LOS LLANOS DE ARIDANE.TF
II LOS QUEMADOS,FUENCALIENTE DE LA PALMA.TF
II MONTE DE LUNA,VILLA DE MAZO.TF
II ROQUE DE ABAJO,SANTA CRUZ DE LA PALMA.TF
II SAN JOSÉ.TF
II SANTA CRUZ DE LA PALMA.TF
II TENDIÑA,EL PASO.TF
II TENDIÑA,LOS LLANOS DE ARIDANE.TF

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

[TamaraEnLaPlaya]

Gosh Jand, they really are centred aren't they. Fingers crossed the island/islanders don't experience worse.

[jand]

Yes Tamara the worrying thing is if it does erupt this could affect all the islands with the possibility of an ash cloud .

Its made news in the UK today its in the Daily Express.

Deformation has also been confirmed the island is expanding upwards.

Below is the new update courtesy of Enrique .

Translated.

''ALM ISLAND ISLAND SISMOVOLCANIC SWARM, CANARIAS 14/08/2021: THE DEVIL STAIR OF SYSMIC ENERGIES. We're on yellow alert, deformation has been confirmed, looks like gas, and we carry over 3000 registered earthquakes and 629 located so far, so this seems to be serious. Let's see if we have more data or stay the same from the IGN, we need it. Reliable and accurate information can be developed today with data going to the IGN website, and not just today is feasible if data is relatively good.

On the Volcanodiscovery web, they have some very interesting tools like those of the released energy seismic histograms and depth we used in AVCAN, and that changes a lot how we look at this swarm. Yesterday we had a second uptick that ended with a 3.5 magnitude (initially given a 3.9) and it appears to have broken something, according to a local witness, first was a ′′ crak crak ", then a roar like from a bear and finally a crystal jingle and that.. vibrations loads. if you sit still or put a bottle on a table, they look perfectly.

The most interesting thing is the ladder of liberated seismic energies or function of a cantor, where we see the first swarm, formed by two steps and the last uptick, much greater and a single step that ends with a broken Earthquake, said otherwise , the magma makes its way and promotes. As soon as he finds another obstacle again, he'll pressurize again, possibly this midnight, simply looking at what he's done the last few days.
If we see the depth of the graphic, it's slowly rising, and also the hypocentres are moving north and east towards the coastal area where the Naos Port is.
On the surface, IGN confirms in its old summit inclinometer that this mountain has swollen by changing its position into 3 microradians, equating to 1.5 cm summit lifting by the magma entry under it. all a fact, which is appreciated, let's see if they put it open.

https://www.ign.es/web/resources/volcano...H4eIfziCmY

PS: I keep editing Enrique)

[jand]

[jand]

[jand]

https://en.wikipedia.org/wiki/Cumbre_Vie...ami_hazard

[jand]

Translated.


Nemesio Pérez: "Of course there will be an eruption on La Palma, the question is when is it going to happen?"

The scientific coordinator of the Volcanological Institute of the Canary Islands Nemesio Pérez has not hesitated to affirm today in the morning of COPE Tenerife that "of course" there will be an eruption on the island of La Palma. The expert volcanologist, in a show of sincerity, has recognized that "the question is not whether or not there will be an eruption in Cumbre Vieja, the question is when it will occur "

Pérez used a metaphor to insist on the argument, explaining that “talking about a volcanic eruption in Cumbre Vieja is like saying if I have a bakery and I don't sell bread. Of course I sell breads. "

Regarding the expected magnitude, the scientist pointed out that “we could play poker, which should be an eruption with a low rate of explosiveness, such as all those that have occurred in the Canary Islands. The volcanic explosivity index is measured from 0 to 8, and on La Palma we have never exceeded 3 ”.

The INVOLCAN scientist wanted to explain in plain words the reason for this phenomenon : “The magma feeds on the upper mantle, and the reality is that a magmatic intrusion was already generated in October 2017, with magma that was stored at 20 o 30 km deep, and from there we have had nine more. The problem is that magma has a lower density than rocks, so it tends to rise upwards. The difference in this swarm is that the focus of the seismicity is now between 10 and 12 kilometers deep, when in the previous ones it was about 20 or 30 kilometers deep and there it is 'give him I hit you' ".

“Consequently”, Pérez continued, “we ask PEVOLCA to raise the alert level, ffor this reason and for three more: the number of seismic Events registered in this swarm is much higher than the previous ones, the maximum magnitude of the seismic Events is also greater, and finally there have been seismic Events of this swarm that people feel them ”.

As for whether this phenomenon can affect Tenerife or Mount Teide, Nemesio Perez was clear, stating that “what happened on La Palma has no effect, no effect on the rest of the islands, in any case an eruption of this type well managed it is a tourist attraction, as has happened in Iceland. Thinking about Mount Teide is pure science fiction ”.

https://www.cope.es/emisoras/canarias/sa...OZaqOJSGMk

[jand]

https://www.youtube.com/watch?v=ALh9Fp2xOpI