Volcanic activity in Canary Islands 2021

[jand]

New Drone footage,



https://youtu.be/EzOgUIijav4

[jand]

The CSIC studies the impact of a possible extreme geological catastrophe in Tenerife
Scientists from Geosciences Barcelona investigate the probabilities and consequences of a cascading episode on the island that would start from a volcanic eruption with earthquakes, landslides and tsunamis

A new study by CSIC Geosciences Barcelona (GEO3BCN-CSIC) assesses the impact that an episode of multiple extreme Events in Tenerife would currently have. This publication, led by the GEO3BCN-CSIC predoctoral researcher, Marta López Saavedra, reconstructs the last great geological event in cascade that took place on the Canary Island to analyze what consequences it would have if it occurred today.

Extreme geological Events are natural phenomena (volcanic eruptions, earthquakes, landslides or tsunamis) of low probability, but high impact, which represent a risk for today's society due to their difficulty in predicting them. These episodes, which can produce chain effects and have a significant local and global impact, are potentially likely on volcanic islands, such as the Canary archipelago.

The latter paper, published in the journal Journal of Geophysical Research: Solid Earth , aims to predict the potential range of a succession of ends cascading Events that may occur during an eruption formation similar boiler which happened 180,000 years ago in the eruption of El Abrigo. Joan Martí, researcher at the CSIC, Jose Luis Rubio, from the Autonomous University of Barcelona, ​​and Karim Kelfoun, from Laboratoire Magmas et Volcans at the Université Clermont Auvergne have collaborated in the preparation of this study.

According to the results of the work, the obtained scenarios show that the main urban centers and the possible evacuation routes of Tenerife would be affected, since they could be covered by the deposits of the pyroclastic flows and probably by the ash fall.

Furthermore, the seismicity concentrated in the central part of the island during a collapse event of the central part of the volcanic edifice, such as the one that occurred 180 thousand years ago, would produce “catastrophic” effects in various parts of the island and trigger a “devastating” landslide in the Icod valley. This landslide, in turn, would produce a tsunami that would likely have a severe impact not only on the north and west coasts of Tenerife but also on other coasts of the Canary archipelago.

“At present, the volcanic system of Tenerife is not in a situation similar to that of the last caldera eruption. In fact, reaching the conditions for an eruption like that of El Abrigo can take thousands to hundreds of thousands of years ”, underlines Marta López Saavedra, main author of the article entitled Cascading Effects of Extreme Geohazards on Tenerife (Canary Islands) . And, he adds, "at the current stage, the Teide and Pico Viejo volcanoes still seem too young to reach these conditions."

López Saavedra insists that "the chances of an eruption like El Abrigo occurring today are very low", although he clarifies that "zero risk does not exist and unfortunately eruptions cannot yet be predicted."

Investigate to prevent
“The results obtained in our study probably show the most catastrophic scenario that can be expected for Tenerife. This makes it possible to establish a maximum limit to the range of situations that may arise in order to design better risk management on this island without exceeding minor Events, or falling short in the event of higher impact Events ”, explains the researcher.

López Saavedra considers that this analysis will contribute to “improving the current Canary Islands Emergency Management Plan (PEVOLCA) by detailing the appropriate danger scenarios and optimizing mitigation actions long before any emergency caused by these extreme Events of multiple dangers occurs. ”.

The researcher highlights the importance of implementing continuous improvements in disaster reduction policies by the agencies responsible for emergency management. "This implies more information and training for the population of the Canary Islands," he stresses.

Technological advance: key to Geosciences research
To carry out this analysis, modeling software has been combined with Geographic Information Systems to simulate each event separately and, subsequently, analyze the global result of all the scenarios obtained.

The research team used the VORIS 2.0.1 software. to obtain the area potentially affected by pyroclastic density currents; a plugin for QGIS 2.14 that allows to calculate the impact of a possible Earthquake; Rocscience Inc.'s SLIDE software for analyzing slope stability under seismic conditions; and finally, the VolcFlow software to simulate the propagation in space and time of the possible tsunami, as a consequence of the collision of the landslide against the ocean.

Posted on October 6, 2021 - 12:08 p.m.

https://www.eldiario.es/canariasahora/te...cvgLGH1yUs

[jand]

Latest update courtesy of Enrique.

06/10/2021-16:00 h Canary Islands.- LA PALMA ISLAND ERUPTION.- THE SISM-VOLCANIC ENJOY RELAXED SOMETHING BUT IS COMING BACK. - PLUS PRODUCED OVERWHELMS IN THE SOUTH OF THE SOUTH COLLADA AND THE FLY THIS STABLE (TREMOR) -

It appears that the last earthquakes are returning to the path of previous days, especially after a 3,7 (initially a 3.9) but still energy is below what it should be. Today in the morning after that Earthquake, the seismic energy rate released has risen somewhat so that the accumulated is seen rising again, it's still alive and not giving up.

es2021towfa 11:51:49 06/10/2021 10:51:49-17.8286 40 km M 3.4 mbLg SW VILLA DE MAZO. ILP
es2021toxua 12:39:40 06/10/2021 11:39:40-17.8336 12 km M 3.7 mbLg III NE FUENCALIENT OF THE PALM. ILP
es2021tozlu 13:30:39 06/10/2021 12:30:39-17.8295 11 km M 3.0 mbLg SW MAZO VILLA. ILP
es2021tozvy 13:42:31 06/10/2021 12:42:31-17.8268 36 km M 3.2 mbLg SW VILLA DE MAZO. ILP
es2021tpaat 13:48:19 06/10/2021 12:48:19-17.8356 11 km M 3.2 mbLg SW VILLA DE MAZO. ILP
es2021tpbvy 14:43:08 06/10/2021 13:43:08-28.5548 17.8389 km M 3.3 mbLg NE PALM STRONG. ILP
es2021tpbvy 14:43:08 06/10/2021 13:43:08-28.5548 17.8389 km M 3.3 mbLg NE PALM STRONG. IL IL
es2021tpczv 15:17:58 06/10/2021 14:17:58-28.5554 17.8333 km M 3.4 mbLg NE PALM FUENCALIENT. IL IL
es2021tpdfc 15:24:05 06/10/2021 14:24:05-28.5520 17.8236 km M 3.0 mbLg NE FUENCALIENT OF THE PALM. IL IL
es2021tpdxf 06/10/2021 15:45:16 14:45:16-17.8470 11 km M 3.2 mbLg N PALM STRONG. ILP

As far as day to day, the eruption is in a more stable phase, there is nothing more to see how the tremor holds, although with some explosions from time to time and lightly rise, it is feeding without pause to the flow going down by the hillside.

As far as the descent of flow to the sea is concerned by the lavic channels, which does not remove that from time to time like today, there is an overflow of laundry and a new arm of lava separates new areas with structures and plantations .. It's what happened today very close to the end along the mountain of Todoque near the delta, from which I pulled a graphic.

Still editing the Post (Enrique)

AS A FOOTNOTE TO ENRIQUE'S POST THERE HAVE BEEN TWO FURTHER EARTHQUAKES ONE A M3.7 AT 10 KM DEPTH.

3.7 mbLg N FUENCALIENTE DE LA PALMA.ILP 2021/10/06 15:12:00 10 + info

2.8 mbLg SW VILLA DE MAZO.ILP 2021/10/06 14:48:46 12 + info

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

[jand]

[jand]

[jand]

The vents have started erupting again .

Live feed :

https://youtu.be/INvrtMg5tSQ




Binter cancels Thursday's flights with La Palma due to the ash cloud
The company explains in a statement that it has been forced to make this decision due to force majeure, since the situation of suspended ash has worsened considerably.

Wednesday, 6 October 2021, 18:36
Binter has reported that due to the evolution of the ash cloud from the volcanic eruption on La Palma, and the latest Weather forecasts about the behavior of winds at height, it temporarily cancels the flights scheduled for Thursday you see with the Island.

The airline has indicated in a statement that it has been forced to make this decision due to force majeure, since the situation of suspended ash has worsened considerably and is expected to continue like this at least on Thursday, not allowing it to develop. the operation with the necessary security requirements.

The company explained that it is keeping an eye on the meteorological evolution , so that it will try to recover the activity as soon as possible and provided that the conditions allow to resume the flights, guaranteeing their safety.

For now, the rest of the flight schedule in the Archipelago continues to develop normally.

It also indicates that by attending through the usual channels the requests for changes or refunds that may be received by the affected passengers on these flights.

Due to the exceptional situation that is being lived, Binter will inform of any news or change that could occur, through its usual channels.

Likewise, the airline informs its customers that before going to the airport they check the status of their flight in the official company media.

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

[jand]

Some photos just taken live from my TV.

[jand]

"Low" probability of a tsunami, but zero risk "does not exist"
The CSIC evaluates the impact that an episode of extreme geological phenomena would have on Tenerife, where Teide is located


The eruption of the Cumbre Vieja volcano on La Palma has been a turning point in the population of the Canary Islands, who now view their coexistence with a natural environment of volcanic origin with greater doses of concern. Precisely in Tenerife is the Teide volcano, the highest peak in Spain with its 3,715 meters, which last erupted in 1909, an event that is now remembered for obvious reasons and that has also led to a new study of the Higher Council for Scientific Research (CSIC). This is a study by the CSIC's Geosciences Barcelona (GEO3BCN-CSIC) that has evaluated the impact that an episode of extreme geological Events (volcanic eruptions, earthquakes, landslides or tsunamis) would currently have on Tenerife. The publication, led by researcher Marta López Saavedra, reconstructs the last great geological event in cascade that took place on the Canary Island 180,000 years ago to analyze what effects it would have if it occurred today. The consequences would be "devastating", but the CSIC sends a reassuring message: "The probabilities are very low", although it clarifies that "zero risk does not exist."

Extreme geological Events are natural phenomena of low probability, but high impact, which represent a risk for today's society due to their difficulty in predicting them. These episodes, which can produce chain effects and have a significant local and global impact, are potentially likely on volcanic islands, such as the Canary Islands.

This latest work, published in the 'Journal of Geophysical Research: Solid Earth', aims to predict the potential scope of a cascading succession of extreme Events that would occur during a caldera formation eruption similar to the one that happened 180,000 years ago. in the eruption of El Abrigo, in Tenerife.

"Catastrophic" effects
According to the results of the work, the obtained scenarios show that the main urban centers and the possible evacuation routes of Tenerife would be affected, since they could be covered by the deposits of the pyroclastic flows and probably by the ash fall.

Furthermore, the seismicity concentrated in the central part of the island during a collapse event of the central part of the volcanic edifice, such as the one that occurred 180,000 years ago, would produce "catastrophic" effects in various parts of the island and trigger a "devastating" landslide. of land in the Icod valley. This landslide, in turn, would produce a tsunami that would likely have a severe impact not only on the north and west coasts of Tenerife but also on other coasts of the Canary archipelago.

“At present, the volcanic system of Tenerife is not in a situation similar to that of the last caldera eruption. In fact, reaching the conditions for an eruption like that of El Abrigo can take thousands to hundreds of thousands of years ”, underlines Marta López Saavedra, main author of the article entitled 'Cascading Effects of Extreme Geohazards on Tenerife (Canary Islands)'. And, he adds, "at the current stage, the Teide and Pico Viejo volcanoes still seem too young to reach these conditions."

López Saavedra insists that "the chances of an eruption such as El Abrigo occurring today are very low", although he clarifies that "zero risk does not exist and unfortunately eruptions cannot yet be predicted."

Investigate to prevent
«The results obtained in our study probably show the most catastrophic scenario that can be expected for Tenerife. This makes it possible to establish a maximum limit to the range of situations that may arise in order to design better risk management on this island without exceeding with minor Events, or falling short in the event of higher impact Events ”, explains the researcher.

López Saavedra considers that this analysis will contribute to «improving the current Emergency Management Plan for the Canary Islands (Pevolca) by detailing the appropriate hazard scenarios and optimizing mitigation actions long before any emergency caused by these extreme Events of multiple hazards occurs. ».

The researcher highlights the importance of implementing continuous improvements in disaster reduction policies by the agencies responsible for emergency management. "This implies more information and training for the population of the Canary Islands," he stresses.

https://www.canarias7.es/sociedad/bajas-...A1mi&vli=_

[jand]

Latest update courtesy of Enrique.

06/10/2021-21:00 h Canary Islands.- LA PALMA ISLAND ERUPTION.- ENJOY SISM-VOLCANIC CONTINUES AND Typical THINGS FROM AN ERUPTION, FIGHT HAIRS, VOLCANI TUBES AND FEATURES GAS ON OCEAN ENTRY. - For many this will surprise you, I hear from the networks that asbestos appears... nothing further, it's a bull, but if there are volcanic fibers that are typical in lava volcanoes when there is a lot of wind or entrances to the ocean ..

They are like hair.. they are fibrous silicates that are known as hair or hair of the Goddess I fought. It usually appears on the beaches as normal in many eruptions when it washes liquid from the lava river that goes down the very hot volcanic tube comes into contact with seawater. I've put a photo of Hawaii for you to see what it is like and I'm leaving you the wikipedia link on the subject.

https://es.wikipedia.org/wiki/Cabellos_d...SyPUCjqSms

But to form these Hairs of Fight, the lava must be very hot and fluid, and this has an explanation. The lava coming out of the volcano is beginning to form tubes and galleries circulating the very fluid and high temperature and relatively quickly so that it reaches the coast at very high temperature. And one of the longest volcanic tubes in the world is in Tenerife nothing less, The Wind Cave System-Leftover.

https://es.wikipedia.org/wiki/Tubo_de_la...5XNhzzTUwo

It should be stressed that I am already seeing several lava tubes, which also have another advantage, prevent the laavic channel from overflowing and you can see where the tube is going because they form very characteristic structures, the ovens... another thing of volcanoes ...- the best known in the Canary Islands is the ′′ Mantle of the Virgin ′′ in Timanfaya..-where smoke and gas from the volcanic tube comes out.

I'll tell you more things that will form, but I'm going to the other theme, the vapor feathers and gases that come out of the magma's direct interaction with the ocean, are not anything, but when you pass under the feather of Gases and ash, things fall on top of you, like crystals, hair of Peleé, and very acid water (eye to clothes) without having that sometimes in the coastal zone accumulate many gases, which move to oxygen, may cause some situation dangerous, even deadly (In the Teneguía eruption, 2 fishermen died), so one should approach the wind to the back to be possible and with a LEL gas meter to control the H2S, O2, CO2 and CH4..... and safely enter.

Finally, we are going to the swarm, reactivate again, with the latter 3.7 definitely returns to the load despite a small break last night, which leaves us that tonight will be more scrambled and what is not if it is in power max or it's still going up more... we'll see in the next 24-48 h.

es2021tpmev 19:56:43 06/10/2021 18:56:43-17.8236 37 km M 3.7 mbLg II-III SW VILLA DE MAZO. ILP

The line marking released seismic energies accumulated is exponential today and has been set with a more or less constant slope in the past 3 days, releasing a whopping 180 MWh. in 3 days... at 60 MWh day.. like a 4,4 magnitude Earthquake each of these 3 days, tremendous..

This indicates that we are reaching a high point where the volcano has reached its maximum speed in energy emission.. or that it is no longer reactivated, hopefully now no longer uploads and limits to being defunded or turning off... don't reactivate anymore (Enrique).

https://www.volcanodiscovery.com/la-palm...quakeTable

As for the volcano I see it getting more ash and it's finer, it's increasing the shredding of it at the output, which can lead to an evolution in the magma, which is changing its composition towards a magma surely more silicone, increasing its viscosity and explosiveness... to be confirmed by taking new samples and chemical and mineralogical analysis.

Tomorrow more... what a night awaits us... the volcano to its own that will remain more or less stable with a lot of noise, explosions and ash... and the swarm giving the can with more tremors, may have some major shaking in around 4, -. energy has.- and not ruling out that you could open a new mouth near the current cone less than 500 m, at most 1 km and in a fan in NNW directions - NW. Cheer up!! and a greeting. (Enrique)

[jand]