Volcano Update 2 - Additional vents opening -Volcano on La Palma island in the Canary Islands has erupted

Lilbitsnana

On TB every waking moment
interesting little swarm

26 EQs since the 4.6 EQ that happened six and a half hours ago, but 11 of them came in the last hour and 5 minutes. (2.4 mag to 3.1 mag)
 
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danielboon

TB Fanatic
Date and time
sort.png
Mag
Depth
LocationDetailsMap
Monday, October 18, 2021 12:52 GMT (56 earthquakes)
Oct 18, 2021 1:52 pm (GMT +1) (Oct 18, 2021 12:52 GMT)
30 minutes ago
2.7
13 km
La Palma Island, Canary Islands, SpainMoreMap
Oct 18, 2021 1:50 pm (GMT +1) (Oct 18, 2021 12:50 GMT)
31 minutes ago
2.6
11 km
La Palma Island, Canary Islands, SpainMoreMap
Oct 18, 2021 1:38 pm (GMT +1) (Oct 18, 2021 12:38 GMT)
44 minutes ago
2.5
9 km
La Palma Island, Canary Islands, SpainMoreMap
Oct 18, 2021 12:33 pm (GMT +1) (Oct 18, 2021 11:33 GMT)
1 hour 48 minutes ago
4.3
37 km
La Palma Island, Canary Islands, Spain
I FELT IT - 12 reports
MoreMap
Oct 18, 2021 12:23 pm (GMT +1) (Oct 18, 2021 11:23 GMT)
1 hour 59 minutes ago
2.8
10 km
La Palma Island, Canary Islands, SpainMoreMap
Oct 18, 2021 12:05 pm (GMT +1) (Oct 18, 2021 11:05 GMT)
2 hours 17 minutes ago
2.7
10 km
La Palma Island, Canary Islands, SpainMoreMap
Oct 18, 2021 11:57 am (GMT +1) (Oct 18, 2021 10:57 GMT)
2 hours 25 minutes ago
3.4
10 km
 

Krayola

Veteran Member
Anyway, I supposed somewhat clued-in discussions are more productive than the clueless versions, right? If people here are interested, I'll try to contribute from time to time as - and if - our conversations result in new information or further developing theories.
I am interested in what your geologist friend has to say about this and I appreciate the info you have posted so far.
 

packyderms_wife

Neither here nor there.
Instituto Volcanológico de Canarias
33m ·

The volcanic danger associated with lava laundry is the one that has caused the most damage and is causing the current eruptive process at the Old Summit, as a result of the condition to areas of cultivation, housing and infrastructure, as well as the dimension (area) of the condition for laundry lava. The affected area is not only an important agricultural and semi-urban area, but also its dimension (779 ha) to date (18/10) is relatively greater than that of the areas occupied by each of the remaining 7 eruptions historic events at Old Summit.
Listing of the 8 historic eruptions of La Palma and areas (approximately in Hectares, ha) that occupied their respective lava laundry.
1. Tacande (La Palma) 1430-1447 (424 ha)
2. Tehuya (The Palm) 1585 (338 ha)
3. Tigalate (La Palma) 1646 (296 ha)
4. San Antonio (La Palma) 1677-1678 (210 ha)
5. Puddle (La Palma) 1712 (441 ha)
6. Saint John (La Palma) 1949 (323 ha)
7. (La Palma) 1971 (276 ha)
8. Tajogaite? (La Palma) 2021 -? (779 ha; until 18/10)
Note:
The name of the recent Old Summit eruption is an issue for the Palmer@s. Our Tajogaite proposal is born of a Palmer in the area. We must note that there are lava laundry from some eruptions that overlap as is the case with the laundry of lava from 1585 and 1712, and those from 1677/78 and from 1971. part of laundry, so save for the first eruption (Tacande) whose laundry did not reach the sea, the total surface is always slightly higher than considered for each eruptive event.
Source: Carmen Romero, Titular Professor at University of La Laguna
247142852_323867846210878_7685318597562923608_n.jpeg
 

cyberiot

Rimtas žmogus
sorry but this is the wrong ocean.

Vanuatu is very close to La Palma's antipode. Some theorize that seismic activity in one location has repercussions at its antipode. I edited my post to emphasize the word.

Per Wikipedia:

In geography, the antipode of any spot on Earth is the point on Earth's surface diametrically opposite to it. A pair of points antipodal to each other are situated such that a straight line connecting the two would pass through Earth's center. Antipodal points are as far away from each other as possible.
 

RememberGoliad

Veteran Member
So please help me out here.

What is the term "Lava Laundry" supposed to represent, and what are we supposed to be seeing as they discuss this??

I took that as either jargon in the jigglestudy industry, or more-likely a laughably bad translation by google, that refers to the ground covered by the new lava spilled from this eruption. The bad translation being someone used the word 'ropa' for sheet, and a translator program converted it to 'laundry'.

This is a guess. This is only a guess. Had it been an actual transfer of knowledge it would've been censored. Please obey your authorities without question in the event of actual knowledge transfers. ;)
 

Faroe

Un-spun
So please help me out here.

What is the term "Lava Laundry" supposed to represent, and what are we supposed to be seeing as they discuss this??
My guess was computer translation from Spanish, but I read through the rest, and still couldn't make sense of the text. I speak enough Spanish to usually figure out what was lost in translation, but in this case, I'm lost too.
 

Lilbitsnana

On TB every waking moment
4.3 just off the Southern tip of the island unless it gets revised/moved (REVISED to 4.5, see below)

Oct 19, 2021 3:10 pm (GMT +1) (Oct 19, 2021 14:10 GMT)
17 minutes ago
4.3
23 km
Spain
I FELT IT - 10 reports


ETA 9:43 AM CDT: revised up to a 4.5 and revised location to lower middle of island


Tuesday, October 19, 2021 14:10 GMT (24 earthquakes)
Oct 19, 2021 3:10 pm (GMT +1) (Oct 19, 2021 14:10 GMT)
33 minutes ago
4.5
36 km
Tenerife, Canary Islands, Spain
I FELT IT - 17 reports
Map
 
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Lilbitsnana

On TB every waking moment
another 4.5 (see upgraded info at bottom of post) offshore of Southern tip of island (unless they upgrade it too) this one is farther offshore than the first one was, so they might leave this one offshore. Then again, only 17 felt the first one several hours ago, this one was shallower and over 40 felt this one.

Oct 19, 2021 10:48 pm (GMT +1) (Oct 19, 2021 21:48 GMT)
16 minutes ago
4.5
20 km
Spain
I FELT IT - 42 reports
Map

ETA 5:25 PM CDT:
Upgraded to a 4.8 and it was re-centered to middle part of lower portion of island/very near last big one. lots of lava moving in


Oct 19, 2021 10:48 pm (GMT +1) (Oct 19, 2021 21:48 GMT)
36 minutes ago
4.8
39 km
La Palma Island, Canary Islands, Spain
I FELT IT - 87 reports
Earthquake data: Mag 4.8 / 39.0 km (24 mi) depth


33 minutes ago reported felt
Oct 19, 2021 21:48 GMT, Oct 19, 2021 10:48 pm (GMT +1) local time
Lat / Lng: 28.5855 / -17.8192: La Palma Island, Spain
Source: IGN
Other sources: EMSC: 4.8 / 39 km
 
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danielboon

TB Fanatic
another 4.5 (see upgraded info at bottom of post) offshore of Southern tip of island (unless they upgrade it too) this one is farther offshore than the first one was, so they might leave this one offshore. Then again, only 17 felt the first one several hours ago, this one was shallower and over 40 felt this one.

Oct 19, 2021 10:48 pm (GMT +1) (Oct 19, 2021 21:48 GMT)
16 minutes ago
4.5
20 km
Spain
I FELT IT - 42 reports
Map


ETA 5:25 PM CDT:
Upgraded to a 4.8 and it was re-centered to middle part of lower portion of island/very near last big one. lots of lava moving in


Oct 19, 2021 10:48 pm (GMT +1) (Oct 19, 2021 21:48 GMT)
36 minutes ago
4.8
39 km
La Palma Island, Canary Islands, Spain
I FELT IT - 87 reports
Earthquake data: Mag 4.8 / 39.0 km (24 mi) depth



33 minutes ago reported felt
Oct 19, 2021 21:48 GMT, Oct 19, 2021 10:48 pm (GMT +1) local time
Lat / Lng: 28.5855 / -17.8192: La Palma Island, Spain
Source: IGN
Other sources: EMSC: 4.8 / 39 km
Upgraded to 4.9 View: https://mobile.twitter.com/EndGameWW3/status/1450598950776582145
 

Lilbitsnana

On TB every waking moment
I like the image farther down showing the volcano vents and magma feed from main chamber.


La Palma volcano eruption update: eruption continues with no end in sight
Wed, 20 Oct 2021, 13:09
13:09 PM | BY: T
Activity at the vent of the eruption on La Palma aroud noon today (image: TV La Palma live stream)

Activity at the vent of the eruption on La Palma aroud noon today (image: TV La Palma live stream)
Latest lava flow map (image: IGME)

Latest lava flow map (image: IGME)
Current seismic signal LP01 station (image: IGN)

Current seismic signal LP01 station (image: IGN)
The eruption, now over a month old, continues without significant changes, and no soon end in sight.
However, at least visually, the intensity has been lower today so far compared to last night. Ash emissions been decreased and stronger trade winds bring much needed relief to the Ariadne Valley.
The active lava flows unfortunately continued to advance and reached the center of La Laguna, where more and more buildings and structures fall victims to it.
La velocidad de la colada de Lava que llega a La Laguna sorprende a las fuerzas de seguridad Comunidades enteras han sido devastadas por la lava del volcán. #lapalma #notialertas La Palma #volcanCumbreVieja pic.twitter.com/VLJndxxjSi
— Noti Alertas (@notialertaspa) October 20, 2021

Volcanic tremor remains high, with little change, suggesting that magma flux remains in the same order as during the past weeks. The new vent southeast of the main cone, which had been seen appearing or reactivating itself and erupting ash plumes last Friday, is active again, according to reports, ejecting some lava material as well. The more lava erupts from this vent, probably the better for the endangered areas along the northern margin; if it starts to produce lava flows, they are likely to remain on top of older flows.

Other parameters show little variations as well that could point to important changes: Earthquake activity remains elevated with more than 100 quakes above magnitude 2 recorded during the past 24 hours, slightly more than average. Ground deformation remains stable, with no clear trend towards in- or deflation visible at the GPS stations.
Why activity is different at different vents
Update Wed 20 Oct 2021 07:31
Cartoon showing the different activity at the vents of La Palma at the moment (image: Volcanes de Canarias)

Cartoon showing the different activity at the vents of La Palma at the moment (image: Volcanes de Canarias)
Volcanes de Canarias (link to twitter) published a simplified sketch to illustrate the current arrangements of vents at the eruption site, to help to better understand how the activity is different at each vent. Ultimately, this is a function of how gasses, present as bubbles inside the magma as well as still in solution in it, separate from the liquid magma column when it rises to the surface, and might form different regimes within the system:
For example, if gas bubbles form a type of conduit within the magma column, aggregating along a specific area, they likely will erupt as gas jets with little liquid and more ash, something typically observed at the upper vents. Areas at the margins of the main column might be largely degassed on the other hand; these will form liquid, but lower fountains or entirely effusive vents.

Another important factor includes how much external water (i.e. from the groundwater system) interacts with the magma. Depending on how much water is present and able to interact with the magma, this interaction can completely change the dynamics of the activity at some (or even all vents). Water can absorb a lot of energy, but if in contact with magma, it typically transforms into steam as result, which goes with a thousand (1000!) times increase of volume. If the generated steam is not easily released, it becomes over-pressured, and once, this pressure overcomes the surrounding containing pressure, will. result in violent explosions known as phreatomagmatic.
Phreatomagmatic activity is more likely to occur at the vents furthest away from the center, where magma rises through older rock layers that might still contain water or are in connection with aquifers.
 

Lilbitsnana

On TB every waking moment

EndGameWW3
@EndGameWW3

·
54m

Update: La Palma: This is now the largest volcano on the island in recorded history. It has gone from VEI 2 - VEI 3.

I just read on a chat yesterday that only around 1/4 of the current magma volume in the chamber had been spewed out so far and they were hoping it didn't continue to fill.

That what has already flowed out made it twice as large as the 1949 and 1971 eruptions.

It said that the eruption would last until mid January based on the then current amount of magma in chamber.

That was before that latest 4.8 that happened. Wonder how much magma entered the chamber with that quake?
 
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