Volcanic activity in Canary Islands 2021

[jand]

And what to say about the El Hierro spectrum, it says there's a lot of noise, so much you hear there... it's awesome... (Enrique)

[TamaraEnLaPlaya]

Came across this from AEMET (29th Sept) - timelapse of eruption on the horizon viewed from Tenerife: (amazing clouds and stars!)

https://twitter.com/AEMET_Izana/status/1...palma.html

[jand]

This is how they feel (and hear) the explosions of the La Palma Volcano from the air.
Flying drones in the vicinity is not always an easy task, and at any time and without warning, this can happen.
This is also one of the reasons to maintain a security perimeter (not only lava is dangerous).
Similarly, in nearby towns, it is requested not to stay longer than necessary near windows and glass.
Video and text by Julián Ruiz Sandoval @viajandito
#erupcionlapalma #somoslapalma #lapalma #erupcion #todossomoslapalma #cumbrevieja #volcaniceruption #volcano #lapalmavolcano #eruption


https://www.facebook.com/minombreesgranc...463646711/

[jand]

Scientists separate the increase in earthquakes from the appearance of another eruptive focus
From Monday to Tuesday, there were a hundred earthquakes, the largest with magnitude 3.9. According to experts, nothing indicates the opening of another issuing center

The increase in seismicity felt around the Cumbre Vieja volcano is creating alarm among the population residing to the south and west of the eruptive fracture. However, the Pevolca scientists maintain that this increase in earthquakes is not the prelude to the opening of a new eruptive rift in another area of ​​the island, since the earthquakes are occurring at a considerable depth and no substantial deformations have been detected. on the ground that indicate a new magmatic intrusion under the island.

Furthermore, the frequency, quantity and magnitude of recent earthquakes differ greatly from the seismic swarm that led to the eruption at Cabeza de Vaca . In fact, between September 12 and 19, there were about 26,000 earthquakes in the area, of which 1,600 were located. Most of them had a magnitude equal to or less than 2 on the Richter scale and only a minimal part exceeded magnitude 3.

However, between September 21 and October 5, 335 seismic Events have been located. The highest magnitude reached 3.9 degrees and occurred at 4.36 in the morning yesterday at a depth of 38 kilometers , in the part of the Cumbre Vieja ridge located in the municipality of Mazo.

Seismicity is increasing in terms of the number of episodes and magnitude and has also been more felt by the population, especially in the towns of Fuencaliente and Villa de Mazo, but it remains at depths of between 15 and 10 kilometers , as explained yesterday by the Pevolca technical director, Miguel Ángel Morcuende.

On Monday there were 98 earthquakes in Cumbre Vieja, of which 70 had a magnitude between 2 and 3, and another 28 exceeded 3. Yesterday, the IGN located 35 earthquakes in the area, of which 18 exceeded magnitude 3.

« The seismic swarm is centered in the vicinity of where it was the first days. If anything more to the southeast, for what they are more felt in the towns of Fuencaliente and Villa de Mazo, "Morcuende highlighted, who stressed that it is not a shallow seismicity, but a deep or medium deep one. " The rest of the parameters that could tell us about the appearance of a new emission center in these municipalities are null ", highlighted the director of the emergency plan to reassure the people who live at the foot of the eastern and southern slopes of Cumbre Vieja . However, he warned that earthquakes will continue to be noticed and that earthquakes of greater magnitude or intensity may even be recorded.

" C hen a system has an open exhaust valve, does not need to find a point that energy would cost more open surface , " he said in remarks to Radio Nacional director of the Institute National Geographic (IGN) in the Canary Islands, Maria José Blanco, who maintains that these earthquakes are probably due to "a feedback of the magma system at depth",

Blanco stressed that in the only eruption of which there is an instrumental record, that of the underwater Tagoro volcano in El Hierro, something similar happened . «It started in July 2011 with a very small seismicity in El Golfo. It crossed the island from north to south in September and finally, on October 10, the eruption began in the Mar de las Calmas. Later, the seismicity returned in November to the same point of El Golfo with greater and more intense magnitudes, but there was no second eruption ", explains the geologist.

In any case, Blanco does not rule out the opening of other emission centers in the vicinity of the volcanic cone. In fact, yesterday a fissure was located to the north of the cone with emission of gases and high temperature in the ground that, for the moment, does not have much importance, said Blanco at the Pevolca press conference.

https://www.canarias7.es/canarias/la-pal..._los&vli=_

[jand]

This morning there have been two earthquakes one at only 9km depth and one at only 8km depth


2.5 mbLg SW VILLA DE MAZO.ILP 2021/10/06 02:25:55 8


2.5 mbLg SW VILLA DE MAZO.ILP 2021/10/06 02:07:03 9


This morning there was a M3.7 at 05:57 shown on IGN but it was then changed to a M3.3 with a different depth and even the position was changed.


3.7 mbLg SW VILLA DE MAZO.ILP 2021/10/06 05:57:44 eleven

REVISED DETAILS

3.3 mbLg NE FUENCALIENTE DE LA PALMA.IL 2021/10/06 05:57:44 II-III 14

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

[jand]

Latest update courtesy of Enrique.


LA PALMA  ISLAND ERUPTION.- FINALLY GOES DISMINUING THE SYSMIC ENERGY RELEASE - It's good news as the swarm seems to be going referring, and magma circulates more with less seismicity and without resistance or anything to stop it to higher levels, I guess by the existing channel to the current eruptive point. but I can't throw the bells on the fly as this trend has to be confirmed in coming days. The vertical deformation goes down a bit but the horizontal remains, at least indicates some less pressure in this volcano, which is slowly lowering its pressure, but we have volcano for a while, 2 weeks nobody takes it away from us.

The truth is that there is the option that the system has been stuck and that there is a seal confining the magma, so lower earthquakes and then release in a hit with a stronger Earthquake as already commented on 4 + or even 4.5, which is undesirable and I don't get to rule out until a few days pass. Already did this on El Hierro.

The saying this is based on the fact that the curve of freed seismic energies accumulated no longer grow exponentially, but has moderated its advancement (it's the blue line) and has stabilized, not my thing, as you can see it in the graphics of La Palma Volcanoodiscovery.

https://www.volcanodiscovery.com/la-palm...uakes.html

Therefore we have probable stages:

1.- Most likely to follow the current eruption, so that if the current eruptive system or volcano holds with less pressure and unopened more mouths away from the eruptive point, we're fine, but if the pressure goes up much more The possibility of opening them more to NNW - NW is a fact, as the topographic line drops would be, heading to Tacande and Tajuya.

2.- And the other less likely option is still open as there are still somewhat more hilarious earthquakes in the plain area with lava just south of the Nambroque and Hole black and north of the Old Summit, where I believe that could open a mouth as already happened in 1949. The deformation should sing before this opening occurs, like the earthquakes, so will have to be pending in this area.

es2021tofmz 28.5660 06/10/2021 02:25:55-17.8357 8 km M 2.5 mbLg SW MAZO VILLA. ILP
es2021toewu 28.5774 06/10/2021 02:07:03-17.8271 9 km M 2.5 mbLg SW VILLA DE MAZO. ILP

And although there are more possible options, they have a low probability and at the moment they are not worth considering, but nothing can be ruled out and that another area becomes candidate in view of data on seismicity, gas and deformation. (Enrique)

I leave you a stunning satellite photo:

https://twitter.com/LaPalmaErupcion/stat...Ve4RPcYMvc

And a quick camera animation from a few days ago collapse. (Enrique)

https://twitter.com/i/status/144537456511538790

[jand]

The M4.1 has since been changed from M4.1 SW VILLA DE MAZO ILP 40 TO:

3.5 mbLg NE FUENCALIENTE DE LA PALMA.IL   2021/10/06 07:25:47  33


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

[jand]

Video of new cracks that have opened up.

https://youtu.be/4lg80JCCv4k

[jand]

LATEST DATA INDICATES THAT THE ERUPTION IN LA PALMA ‘IS NOT ENDING SOON’

2021/10/06 08:14:19 Written by Canarian Weekly Tenerife
The latest data from Pevolca on seismicity, geochemistry and deformation indicates that the eruption in La Palma is not ending soon, as the volcano has entered a "mature phase” of “steady” eruption which it could be in for days, weeks, or months.

After yesterday’s daily meeting of the scientific committee, the director of the IGN, María José Blanco, said that the Weather forecast indicates that winds will turn today pushing the column of ash and gases from the plume towards the northeast slope of the island, which could affect the island’s airport.

In addition, scientists have confirmed that there are no new emission points, although they have detected the opening of a fissure zone about a hundred metres northeast of the main cone of the volcano with emission of gases and soil at high temperature, without being an actual eruption, which they say is of little importance.

Pevolca experts believe that the most probable thing in the short term is that the lava, which is still quite fluid, will continue to head towards the sea following the path already made by the original flow, although vigilance is being maintained in the event that it broadens or takes a new direction.

The latest measurements show that 420 hectares of land are now affected by lava, an increase of 6.74 compared to the day before, inside a perimeter of 36.24 kilometres. The lava delta currently occupies an area of ​​more than 36 hectares and has advanced 540 metres from the coastline. The plume of water vapour and hydrochloric acid that is being produced when the lava meets the sea is being kept in a localised area near the delta.

Finally, data shows that the emissions of sulphur dioxide are 1,200 tons a day, with over a quarter of a million tons being emitted since the beginning of the eruption.

https://www.canarianweekly.com/posts/eru...ucGZBNrgXg

[jand]

Look at the height of this lava flow.