Volcanic activity in Canary Islands 2021

[jand]

Drone view over La Laguna today.


https://www.facebook.com/GEVolcan/videos...6679028412

[jand]

By the way we had another episode of spasmodic tremor today from 14:00 to 14:28 h that ended abruptly with a 3 Earthquake. 9... curious and indicating another new lava contribution from the depths. By the way when these seismic trains or spasmodic tremors occur, they must crunch and sound all the timbers of the vibrant old houses. (Enrique)

[jand]

Update to last post of Enrique.


The deformation has dropped a bit, but the tremor has gone up a bit, this translates to the volcano is draining the magma that comes from lower levels in a more efficient way, which makes it seem calmer, but it continues to shed a lot of material who is growing some flow for his next move.

Then I've been thinking that there's quite a lot of material that looks like it goes to the delta for a lava tube of the Todoque laundry and I see smoke, but I don't see delta teaser, which makes me think there's a mouth on the edge of the delta underwater at about 35-40 m deep that could be clearing the material through the island's talud to much deeper levels, a batymetry of the area would be more than interesting.

While the swarm continues with its own and a high seismic energy release rate and earthquakes of more than 4 magnitude, the last one makes us reach two dozen, while earthquakes between 3 and 4 go more than 400 and we're on our way to the 500. s. In principle the energy release rate is maintained for about 7-8 days or so, but we do not know whether it will start to decline or follow, we have to wait several days to give us a complete pattern, but without no more 4.4 + in 3 days it starts to go down.

is2021unlnj 21:48:00 19/10/2021-17.8192 39 km

IV-V M 4.8 mbLg SW VILLA DE MAZO. ILP

es2021uppvq 02:14:49 21/10/2021 28.5727-17.8391 37 km IV M 4.3 mbLg SW VILLA DE MA
es2021uqpja 28.5598 21/10/2021 15:08:06-17.8406 12 km III-IV M 3.8 mbLg NE PALM STRONG. IL IL

There we go. ILP
es2021uress 28.5654 21/10/2021 22:54:03-17.8260 33 km IV M 4.4 mbLg SW MAZO VILLA. ILP
es2021urupe 22/10/2021 28.5868 06:54:49-17.8245 38 km IV M 4.2 mbLg SW MAZO VILLA. ILP
es2021usjoq 22/10/2021 14:28:47 28.5697-17.8572 12 km III-IV M 3.9 mbLg N PALM FUENCALIENT. ILP
es2021usltc 28.5923 22/10/2021 15:34:36-17.8184 37 km III M 3.9 mbLg SW MAZO VILLA. ILP

In principle the seismic forecast for the next few hours and to continue to emit a 4.8 a day energy rate, gives us that you enter tonight and before noon tomorrow would play a highlight event of 4.5 + and hours more likely to be at 6 h intervals as follows:

1.- The first batch would be around 2:50 h IGN, 3:50 h Canary Islands and 4:50 h peninsula.
2.- The second batch would be around 8:00 h IGN, 9:00 h Canary Islands and 10:00 h peninsula.

Finally highlighting that we had another episode of spasmodic tremor today from 14:00 to 14:28 h that ended abruptly with a 3 Earthquake. 9... curious and indicating another new lava contribution from the depths. For making a symbol that is understood, event is like when we make a fart with our mouth and lips, sounds vibrant as the air comes out. By the way when these seismic trains or spasmodic tremors occur, they must crunch and sound all the timbers of the vibrant old houses. (Enrique)


Well that, the good news is that the flow stops almost entirely and some are inflating and catching higher, so we are at the expense of what the volcano and the flows do.... little more can I say, the maps They are pretty much calculated to yesterday's. (Enrique)

[jand]

How to act in the event of an Earthquake?
Pevolca and Involcan summarize a series of recommendations in light of the increase in seismicity on La Palma

Faced with the foreseeable increase in seismicity, with earthquakes of up to 5 magnitude and VI intensity, classified as "slightly damaging" indoors , Pevolca and Involcan recall and summarize the main recommendations to the population of La Palma. So far, the highest magnitude seismic movement has been 4.8. These are the recommendations of the Pevolca:

Before the Earthquake: Both at home and in the workplace, take preventive measures: reinforce the shelves, fix lamps and remove large objects from the furniture.

1. If you are outside and there is an Earthquake, find an open place and stay away from structures that could fall onto the road and from areas at risk of collapse.

- Go to open spaces.

- Stay away from buildings, balconies, traffic lights, streetlights, power lines or trees.

- Do not go near areas with danger of landslides.

- Follow the recommendations of the authorities and find out through official channels and the media.

- If you are in a vehicle, slow down and stop the engine when possible, away from buildings and steep areas. Set the emergency indicators and stay in the vehicle until the Earthquake ends.

2. If you are surprised by an Earthquake inside your home, stay calm and follow these self-protection tips:

- While the shaking lasts, do not go outside.

- Protect yourself under a door frame or some solid piece of furniture, such as a table.

- Do not stand near windows.

- If you have to leave your house, disconnect water, electricity and gas.

- In case of evacuation, go down the stairs and do not use the elevator.

- Follow the recommendations of the authorities and find out through official channels and the media.

[jand]

Almost 40 earthquakes on La Palma since midnight, several of magnitude 3.9
The IGN has registered from 00.00 hours this Saturday and until 06.30 some 37 earthquakes south of Cumbre Vieja

The National Geographic Institute (IGN) has registered from 00.00 this Saturday until 06.30 some 37 earthquakes south of Cumbre Vieja, in La Palma, several of them of magnitude 3.9 in Fuencaliente and Mazo .

In the case of the first municipality, three earthquakes of magnitude 3.9 and intensity 4 took place at 00.54, 05.58 and 06.07 hours at a depth of between eleven and thirteen kilometers .

Meanwhile, as far as Mazo is concerned, the largest Earthquake was at 02.19 hours, also 3 , 9, but at a depth of 35 kilometers, locating another of 3.8 at 04.00 hours at 37 kilometers .

In general, seismicity remains stable at medium and stable depths, but it is not ruled out that in the coming days the earthquakes will gain in intensity and may reach six.

SOME 6,600 PEOPLE EVACUATED

After the preventive evacuations last Wednesday, the total number of people evicted since the beginning of the emergency stands at around 6,600 .

Regarding the area affected by the eruptive process is 845.72 hectares, 20.49 hectares more than the data made public yesterday, and the maximum width between the extreme points of the flows remains at approximately 2,900 meters, although within of this extension there are areas that have not been affected by lava.

The buildings destroyed or damaged, according to the data provided by the Cadastre, amount to 1,280 buildings, of which 1,030 are for residential use, 132 for agriculture, 64 for industrial use, 30 for leisure and hospitality, 11 for public use and 14 for other uses.

Finally, the affected crop area currently reaches 258.23 hectares, of which more than 56%, 144, 93 hectares, correspond to banana crops.

TOPICSLa Palma , La Palma volcano , Volcanic eruptions

[jand]

Durante la mañana de hoy se ha derrumbado parte del cono principal. Imágenes de las 11.30 (hora canaria) desde la carretera de S. Nicolás (Tacande) / During this morning part of the main cone collapsed. Footage at 11.30 (Canarian time) from S. Nicolás Road (Tacande)


https://twitter.com/involcan/status/1451860618852585474

[jand]

Video from yesterday.

https://www.facebook.com/CSIC/videos/858251218220131

[jand]

Latest update courtesy of Enrique.

23/10/2021 13:45 h Canary Islands.- LA PALMA ISLAND ERUPTION.- NEW COLLADA BY THE NORTH BORDE IN THE HIGH Police AREA, BIGGEST VOLCANO, NEW MOUTHS, NEW COLLAPSE AND MORE GASES AND LAVA.- This doesn't stop, every day I see bigger the volcano that doesn't even stop, and it has more eruptive points and bigger, right now it has 4 mouths throwing pyroclasts, the more south also ash and water vapor occasionally due to the phreatomagmatic interaction that continues to occur and the northern fountains of lava and splashes with some lavic overflow. The last of these overflows at this emission point has dragged part of this meeting a small collapse of the pyroclast cone.

Down towards the northwest of those 4 mouths there are several more for which a lava torrent comes out along a trench or fissure that changes every day and where the dam is taking its main contribution of lavic material that It goes to laundry and it fits further north, causing the lava to go further and further north.

To say this is one of the best specialized eruptive mouth volcano videos I've seen in my life. and therefore the post goes to the work of the IGME, CSIC and IEO people and so many other research agencies who are doing an impressive job in this eruption. These scientists need them and the successive governments we've had the last 20 years all they want to do is shut them down, though they don't realize how necessary they are.

https://twitter.com/i/status/1451872810654130181

THE EARTHQUAKES AND THE WARNING.. Tonight has been moving and although I found it more intense, they have finally reduced them. I hope it is the same sale as other times, and not a higher one, because that has consequences, the first is that they will confuse all the world and Spanish scientists working with the IGN data not able to give a correct diagnosis of what it's happening., with the risk that poses.

es2021utonk 28.5602 23/10/2021 06:07:00-17.8315 11 km IV M 3.9 mbLg NE PALM FUENCALIENT. IL IL
es2021utogi 28.5543 23/10/2021 05:58:39-17.8302 13 km III-IV M 3.9 mbLg NE PALM FUENCALIENT. ILP
es2021utrfj 28.5754 23/10/2021 07:28:27-17.8160 36 km III-IV M 4.3 mbLg SW VILLA DE MAZO. ILP

With these data the curve of seismic energies released accumulated it is observed that right now the curve is in a downward trend, which doesn't make me much seeing how the volcano is, and only by changing to 4.5 the last Earthquake, follow the behavior linear from these last few days. This is why I already say, my diagnosis is not accurate because of IGN. So either we're going to have a 4.4 or more shortly or I'm missing energy... or the volcano starts to drop its activity, which we'll confirm in the next few days if this trend follows.

COLADAS: Flow continues to swell in the Laguna area and so far there has been no more remarkable progress, but in the highest area of the polygon there has been a flood of lava going along the northern edge of the flow field, yet in the highest area of the polygon, although it doesn't seem to have much flow, it's soon but we have to watch, because if it continues downhill, it will reach the lagoon where the school is.

I conclude by commenting that yesterday I had some fever and it's that I caught a cold, so I didn't put the post of the night, I slept, fortunately it was not necessary because there was nothing new reviewable on the map of flows, today yes, as soon as I can put it up this afternoon.
(Enrique)

[jand]

And the eruptive lava fissure overflowed again at the top of the cone a few minutes ago.. (Enrique)

[jand]

The volcano of La Palma continues to feed all the lava flows
The reconfiguration of the cone this morning brings more lava especially to the new fajana and the language of La Laguna

The reconfiguration of the volcanic cone of La Palma this morning, especially of the so-called «conelete» has meant that all the streams are receiving «feeding» although the 1 stands out, which is the one that goes to the new fajana, that is, to the sea, and 8, which at the moment is still practically stopped in La Laguna and which is increasing "in thickness and width." This was explained today by the technical director of Pevilca, Miguel Ángel Morcuende, in the appearance after the meeting with the scientific committee.

Those are the two most interesting things ”about today's changes, he said. "Let's not forget that the committee informs us that there are several lava tubes working, that means that other washes are also fed, although these (1 and 8) are the most important".

Morcuende stressed what he already said yesterday, worries the pressure of the lava on the wash that is standing in La Laguna . “We have had small spills to the northwest that have joined the laundry 8. What these spills have done is that it grows slightly in width. Colada 8, although it has a lot of contribution behind it, has not advanced a meter in La Laguna. But we continue to monitor the possible advance either to the north of the mountain as well as to the south and hoping that the advance was towards the south, that would avoid major problems in terms of buildings. "Colada 8 continues to cause us concern," he added.

For her part, Carmen López, from the National Geographic Institute (IGN) explained that the gas column had reached 3,000 meters , but thanks to the favorable trend of the winds, aeronautical operations would not be affected.

With regard to earthquakes , the scientist pointed out that the "trend" of a reduction in earthquakes at medium and deep depths has not yet been confirmed. "They have to spend more days," he said. Even so, "this trend has begun to be identified" and, if confirmed, it would be following "a pattern like that of El Hierro", that is, "deep seismicity disappears first and intermediate seismicity continues and after weeks it also disappears, which would mean is that we could be closer to the end . But still, he said, "it is too early to tell if it is being this way."

The largest Earthquake felt yesterday was of intensity 4 and of magnitude 4.3 .

The emission of sulfur dioxide is at "high" values, specifically 31,600 tons per day, and that of carbon dioxide "continues to reflect a downward trend of 623 tons per day." These observations, stated López, "are consistent with the eruptive process."

Experts continue to recommend the use of FFP2 masks, although levels of particles below 10 microns have also been reduced .

Morcuende also recalled that the "accompaniments" to the evicted neighbors continued to remove belongings as well as to carry out cleaning tasks on the roofs, in which the UME collaborates.

There are 373 people housed in Fuencaliente and 56 in Los Llanos de Aridane , making a total of 429 people, 14 more than yesterday, Morcuende explained. Who also recalled that there are 46 other dependent people or people with reduced mobility in social health centers on the island and of them six in the Hospital de Nuestra Señora de los Dolores in the capital of Palma.

Morcuerde also gave the daily data of affected hectares, between yesterday and today only 3.24 hectares have been added, bringing them to 848.96. "The growth is small mainly because the flows have practically not moved," he explained, and the width remains at 2.9 kilometers. Thus, the affected buildings continue to be 1,280, of which 1,030 were residential use.