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Message Subject Cumbre Vieja volcano post eruption phase! Time to say goodbye for volcano-thank you for all support :)
Poster Handle Bardo
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[link to elpais.com (secure)]

Automatic translation:

Nieves Sánchez, geologist: "La Palma volcano may be reactivating".

The scientist who advises politicians on the eruption estimates that there are three large magma deposits under the volcano. Recent earthquakes may be a sign that they are recharging.


...We believe that the volcano has three magma reservoirs.
Q. Where does the magma that the volcano spits out come from?

R. From the data we have, it appears that there are three reservoirs. The deepest would be about 30 kilometers underground. This is where material may be melting and it is the main reservoir. There is another intermediate one at about 10 kilometers and the shallowest one would be at about four kilometers. The magma can pass from one to the other or come directly from the deepest one to the surface. This is what we think based on the thousands of earthquakes recorded at different depths from 2017 to now and the type of lava that is coming out.
 Quoting: Anonymous Coward 76393466



We knew about this 4 days ago.



Here is a summary of what I learned in the past 24 hrs. These are my unproven ideas which are trying to explain what is happening with the volcano. Believe it or not.

The deep earthquakes (30-40km) indicate the magma pushing from the mantle plume to the upper mantle. There it finds the old plumbing and starts to go up faster. It is pushing up through the vertical, shaft like, tube to the surface. This magma is very hot and under very high pressure, but it cannot shoot right through because the weight of the magma already in the shaft controls its ascent.

Since it cannot go faster it spreads sidewise and occupies the old storage chambers. It pushes trough and breaks various obstacles, enters the pockets and fills dikes and sills with fresh magma. While it is doing this, the gases in magma (mainly H2O and CO2) explosively depressurize and create earthquakes. Judging by the depth of these quakes at the moment, the “A” – Upper Mantle Storage (15-20km) and “B” – Lower Crustal Storage (8-12km) are being filled.

Once they are full and cannot contain any more magma the pressure from the bottom will build up and the eruption could intensify. At the same time the magma will start to invade the “C” – Shallow Intrusive Complex at the depth of < 5km. We will see it by earthquakes starting at that depth and becoming shallower.
If that storage fills up and the current fracture cannot take in any more magma, we might see more vents opening and erupting. Some of them could be at the top of the ridge.

No one really knows when the breakup of the flank will happen, but once the vents on the ridge start to open and erupt, I think it will be inevitable.

If the push of magma from the mantle plume stops for some reason, then the whole operation will obviously stop as well. However, I don’t see it happening and in fact with the new M class flare from the Sun hitting us on Monday I think it might even intensify.

PS. There is a drawing showing the magma "plumbing", but I published it here a few times already.
 Quoting: Sancho0777


Looks something like this:
https://imgur.com/lYo8oWP

https://imgur.com/L0s3gpj


There is more info in this thread. Do the search on magma chambers.
 Quoting: Sancho0777

 Quoting: Sancho0777


All I see these experts saying is there "may be" or "we believe" or "scientists estimate" or "could be".

It's not very reassuring, especially when they don't talk about the 1949 fracture just sitting there.
 Quoting: SharknatoTomato


Dutch indicates that LaPalma is getting fed from the deep earthquakes at Vanuatu. Seems plausible.

bert-TIAll
 Quoting: MtnPatriot


Well that's disturbing!
 
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