Volcanic activity in Canary Islands 2021

[jand]

Close up footage of the eruptive mouths at 12.35 Canary hours.

https://www.facebook.com/INVOLCAN/videos...8341057269

[jand]

https://www.facebook.com/photo.php?fbid=...438&type=3

[jand]

Video taken at 13:00 today.

IMO a bit too close it could erupt at any time the volcano is so unpredictable.



https://www.facebook.com/watch/?v=599903747968908

[jand]

This reports relates to yesterdays activity from Volcanodiscovery.

La Palma volcano eruption update: eruption intensifies intermittently
Mon, 13 Dec 2021, 23:10
23:10 PM | BY: T

fter yesterday's large explosion at noon, the eruption gained in intensity, both explosive and effusive, during the evening and night. After being quieter most of the day today, it increased again in the evening, shown by the strongly fluctuating volcanic tremor signal.
Phases of strong ash emissions and lava fountains have been alternating with quiet periods when only steaming could be seen at the craters:

Ash plumes reached 4,200 m above sea level this morning, and reportedly up to 7,000 m in the afternoon, and drifted southeast. Absence of wind near the ground created very high SO2 concentrations in El Paso today, with values surpassing 2.590 micrograms per cubic meter this morning.
Lava continues to flow from the (hidden) vents on the western base of the cone into the tube system and crate breakouts in the central part of the flow field. One of the more active surface flows began to eat away one of the remaining islands of so-far untouched land in the area south of Todoque and east of Las Norias, as can be seen in the aerial drone image attached.

The number of quakes has again increased in numbers: During the past 24 hours, there have been 4 quakes of magnitudes 3.0-3.4 and 46 quakes between 2.0 and 2.9. Most of these occurred at the shallow layer around 10-15 km depth while only very few ones occurred at the deeper layer of 30 km or below.
The decrease of seismic activity in the deeper layer might indicate that magma supply from that area is less now than during previous weeks when lots of magnitude 4+ quakes occurred there, but this remains speculative.
No significant changes in deformation has been recorded.

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

[jand]

14/12/2021 - 21:00h Canary Islands. - ERUPTION OF LA PALMA ISLAND. - DAY 87. - TENSA WAIT - PRESSURE LIGHTLY, DEFORMATION ON LP03 IN DRIVING, CLIMBING SISMICITY LIGHTLY AND GAS IS HIGH. - STOP OR STOP ? - The truth is that I would like to say that it's over, but I don't care about a hair and previous experience and eruptions tell us that the volcano has the final word.

If we take the Teneguía, this one just suddenly, but if we take the San Juan, I stopped for a few days and then opened new mouths, among which highlights the mouth for which they lower the coladas that formed the Delta of San Juan. One of cal and one of sand. But let's go with the data there and their analysis to see where they're heading:

GAS SITTED BY THE VOLCANO

I start by the gases, according to the satellite, yesterday's gas pulse has passed, as seen in the image of the post, where you can see what it emitted yesterday over Africa, according to the OMPS a total of 3380 tons of SO2. Looking for more data and came across this:

DAY 87: - SOURCE DATA UNSECURE-

1290 tons of SO2 a day
2400 tons of CO2 a day
493 million m3 of lava


source: https://twitter.com/vleeskr.../status/14...5226805249...

And it is that when the data is scarce, these things happen, facts appear that one no longer knows whether to trust them or not. They're sometimes less rare in the view of the satellite photo, but it indicates to me that CO2 would give problems, as it's happening, normal and totally logical thing.

TERROR AND SISMICITY:

I have to explain that the measure of the tremor is made as the Measure of the Amplitude of the Seismic Noise or RSAM in English, and of course, not only the sound of the volcano is recorded, also the seismic noise of other sources, in this case a small peak pr Oduced by the noise of a 7.3 Telesism in Indonesia in the area of the Sea of Flowers.

But then, what noise do we record as tremor? , for the sound of the magma flowing, like the sound of a mountain river, the magma makes noise and that is what is recorded. We took a 24-hour stop of the magmatic noise of the volcano, which barely has a caudal, so the magma of the ducts has almost stopped completely. The cause is complicated, but it may basically be that the pipelines have been closed when the pressure is lower, that they have blocked, or that the magma that came from below is just finished.

SISMICITY, SESMIC ENERGY AND DEFORMATION:

But as you know what's going on down there, we have two keys, seismicity and deformation. The seismicity, when lowering the tremor, can again locate earthquakes of less intensity, in beginning between magnitude 1.5 and 2 and allows us to appreciate that in addition to the seismic swarm ball where the magma presurates in its different reservoirs, the most energetic with 2-3-4 magnets there is scattered seismicity, magnanimities 1.5-2.5 that indicate that, as the efforts are scattered around the ground surrounding this active area.

So in the last few hours has slightly repaid the seismicity in the area of the reservoir that has pressurized a bit and then has done it clearly in the conduct, you just have to see the deformation in LP04 and LP06 that goes up a little and LP03 that sub and almost one centimeter. Tomorrow I should follow this trend if it doesn't break the stamp and we have another pulse of activity with a lot of ash. In the deep area, however low is what indicates us a small contribution of magma from deep levels to more shallow reservoirs. This tells us that the material continues to move in deep. An Earthquake also indicates something, but it moves little at the moment.

es2021ylphh 14/12/2021 19:17:12 28.5784 -17.8173 37.0 km M 2.4 mbLg SW MAZO VILLA. ILP
es2021yktkk 14/12/2021 08:14:00 28.5881 -17.8290 39.0 km Sense M 2.9 mbLg SW MAZO VILLA. ILP

In terms of the surface area, right now the most important seismic activity is concentrated, both at the entrance to the reservoir at 10-14km, with two earthquakes at 15km very prominent:

es2021ylcrn 14/12/2021 12:55:06 28.5600 -17.8272 15.0 km Sense 2.2 M mbLg NE FUENCALENT OF THE PALMA. THE
es2021ylbmu 14/12/2021 12:19:36 28.5518 -17.8340 14.0 km Sense 3.2 M mbLg NE FUENCALENT OF PALM. THE

SPECTROGRAMS AND SISMOGRAMS

One would think that you don't see things, but there are very interesting things, the first thing are hydromagmatic explosions in the pipeline, which should produce some other Earthquake in that area as recorded at TBT station at 12:50h, 13.15h, 1 3:22 pm, 1:48 pm, 2:35 pm, 3:20 pm, 6:15 pm, 7:40 pm... and those who go out..

Another thing you see are small earthquakes that only mark low frequencies, type VT or even LP(the one at 20:25h) but I don't see the tail well and are triggered by magma movement like the one at 19:10h or the one at 20:52h that are still there without locating.

And the most interesting thing, squeaks and whistles of volcanic slips that are marked on the seismograms as horizontal lines, in some cases as discontinued strikes as for example at 17:05 to 17:15h to 17Hz or a little before 14.14 to 1 5:32h to 18hz, coinciding with an explosion hydromagmatic and indicating that depressurization of gases. To make an analogy of this, it's like when the teapot or coffee maker whistles with the steam pass.

VIDEOS OF THE COLLAPSE:

And these were the coladas this morning, the 22D has advanced a little further towards the norias, about 50-70m since yesterday afternoon and has stopped just at the height of the restaurant "La Mariposa", but they continued to flow slowly, both on the surface and inside lava tubes, just like seen in the following IGME video:

TODAY'S TEMPERAMENT VIDEO - IGME 7:40h - Tubes, Jameos and Coladas.

https://www.youtube.com/watch?v=m4U6o_y_leg

TODAY'S TICOM VIDEO - TICOM 8:50h - coladas.

https://www.youtube.com/watch?v=p7LZ-Uuxb8E

Video of RTVC - 10:00am South Zone - Las Norias

https://www.youtube.com/watch?v=Ucu-UOolqEs

RTVC VIDEO - 12:50h South Zone - Las Norias

https://www.youtube.com/watch?v=l1fWmReykqo

CONclusion:

Everything indicates that it keeps losing energy and still stopping, but it hasn't stopped. Now it's pressurizing and water enters the pipeline, (LP03 should go up), but what we don't know is if it will have power to reopen the pipeline and release another pulse with lots of ash and lightning, (series lighter and chopped ash, even white echo, in the presence of water and be cooler and viscose) as it should be logical, or otherwise it will end up completely and shut off because it lacks energy. It might take hours or days but I think I should at least have a couple of them.

Therefore, we have to wait between 2 weeks and a Month and we can give it to the end, that is as long as we don't have new deep contributions (It would be intense deep seismicity). I wish so but I don't care. A lot of encouragement.

(Enrique)

[jand]

[jand]

[jand]

[jand]

Pevolca update on Wednesday, December 15th at 14:15 pm:

➡️In order to be able to say that the eruption process is finished, the registered data and visible signs must be maintained at current levels for 10 days.
➡️There is no constancy of lava flow from the main cone.
➡️In case of ash emission, the provision of the penalty would be south-east, which would be an unfavorable scenario for the operation of La Palma airport.
➡️Currently, air quality is unfavorable in Los Llanos de Aridane. In the rest of the island the levels are between reasonably good and good.
#MásFuertesQueElVolcán

[TamaraEnLaPlaya]

3D animation - shows how deep/high the lava is!!

https://www.youtube.com/watch?v=vz1kj-k0J4w