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islands canary 2023 volcanic activity

Volcanic activity in Canary Islands 2023
#71
And it's not just the location of earthquakes, it's what people notice, the unlocalized vibrations, the smells, and of course something that if you can see, is the path that leads the release of seismic energy on the island, rising more and more, as indicated the blue curve of accumulated released seismic energies, clearly indicating a process of reactivation. It is not a clear pre-eruptive parameter, but you have to watch the trend, the truth is that I think this has to be taken with great caution, because the trend is clear: Tenerife reactivates. (Enrique)

https://www.volcanodiscovery.com/es/tene...twjJNKdKWw
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#72

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#73
This morning a 3.0 mg Earthquake Intensity II near Volcano Enmedio.

3.0 mbLg

ATLÁNTICO-CANARIAS
2023/04/20 00:33:33 II
15

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#74
Still plenty of activity. Earlier this evening there was a mag 2.4 halfway between FV and TFN.

https://visualizadores.ign.es/tproximos-canarias/

Volcanes y Ciencia Hoy - Volcanoes and Science Today.(FB):


699. - 10/05/2023 - 20:45h Canary Islands. - SEISMIC SWARM WITH VOLCANIC SIGNS IN THE CENTER OF TENERIFE IN TWO ACTIVE AND POWERFUL DEEP TELESISM A MOMENT AGO IN TONGA. - This early morning we have had several relevant signs with a significant volcanic seismic swarm with over a dozen signs of which only two have been located, one at Icod and one at the Cauldera. Then a few hours later, another clear tectonic in the Cauldron area.
es2023jckpg 10/05/2023 08:46:35 28.2334 -16.6963 14.0 km M 1.3 mbLg NE ISORA GUIDE. ITF - Tectonic
Earthquake-volcanic swarm.
es2023jbybk 10/05/2023 02:26:49 28.2375 -16.6910 13.0 km M 1.3 mbLg NE ISORA GUIDE. ITF
es2023jbwna 10/05/2023 01:39:46 28.3263 -16.7046 18.0 km M 1.6 mbLg S WINE ICOD. ITF
The first 1.6 magnitude event has been located in the Icod area of Wines 18 km, but it is a hybrid event (or bolt) that the IGN doesn't locate well and I'm not quite sure it is where they say it is in view of the cue. What is clear, is that if it is well located, it is in the Icod area of Wines where we had the swarm of 2004 and above is deep, indicating that it may be precursor of more activity in the coming days, with a possible more intense swarm in next couple of days.
If it were little, the second event of a magnitude 1.3 to 13 km deep has occurred in the area of the Cauldron, in what would be the roof of the magmatic chamber and is also a hybrid (or screw) like the first, indicating its volcanic origin. Also, this second is almost in the same area under the West - Southwest skirt of Pico Viejo. We'll see if the first one is relocated or not, because it's deep and if there's luck and relocate a third with several signs, it looks like 3 earthquakes more than a hybrid, but with so little data you can't ask for more.
Whoever wants to see more information about these hybrid Events (or screws), I recommend you to read the swarm report that we had on June 14, 2019 where they are talked about and as you can see, they are signs, I put the figure on page 10.
https://www.ign.es/.../volcano.../pdf/20...nforme.pdf
Another good description of a hybrid event and an LP one is in this Volcanic Seismicity article by J.. M. Ibanez and E. Carmona (1998), using data by the way from Timanfaya.
https://www.researchgate.net/.../SISMICI...CANICA.pdf
EDITED: And I take the opportunity to put this document I did not know with data from 2015-2017 from Lanzarote, which indicates what we are losing and the lack of data from this island, which moves non-stop in the area of Timanfaya:
https://www.miteco.gob.es/.../03_monogra...vessanchez...
After the swarm, more non-localized Events have been produced until reaching the event of magnitude 1.3 at 08:46 UTC that looks like a tectonic Earthquake of the normal, non-volcanic, also located on the roof of the magmatic chamber, very close to the other that was located during the swarm of the early morning.
The earthquakes of the last few days in Tenerife and also those in the area of the Enmedio volcano line up in an N-S configuration that in the Iron was a precursor to the activity in a few days, we'll see if it is fulfilled or not... both are moving zones.
Lastly emphasize the strong telesism of 7.6 recorded by all the stations corresponding to an Earthquake at a depth of 200 km in the Tonga area and which is mostly felt at low frequencies, which are best transmitted over long distances.
4 IV 2023-05-10 16:02:00.1 3hr 42min ago 15.57 S 174.58 W 200 7.6 TONGA
https://www.emsc.eu/Earthquake/earthquak...id=1259765
Greetings to all the Canary Islands, there are many Events missing to locate, not only in Tenerife, also in La Palma, let's see if they get the batteries and check, although it doesn't seem to be doing it lately. As far as what awaits us, everything seems to indicate that it will move a bit the next few days in Tenerife and/or Volcano de Enmedio, let's hope it's just a minor jump-start. We'll see what happens. (Rich)
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#75
Not on the same level as other contributors to this subject.
However I highly recommend going on to Canarias 7 website and look at the video of the technicians going into the lava tubes on la Palma.
Personally I thought it was jaw droppng.

******

Edit by Tamara:

Thanks David. For the benefit of others, here is the link:

https://www.canarias7.es/sociedad/cienci...00-nt.html
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#76
Volcanes y Ciencia Hoy (FB)

700. - 05/16/2023 - 19:45h Canary Islands. - NO Earthquake DATA IN THE CENTER OF TENERIFE BY THE IGN IN THE CENTER OFTENERIFE. GET INVOLVED, WE THROW WHATS THERE. - That elections make things different from day to day, that's for sure and seismic tranquility is one of them, a tranquility that takes 10 days without a single event located in the boiler area of Tenerife in the last 7 days, thing that does not fit and that is not credible in the normal activity of this volcano.
However, compared to the 8 Events located by the IGN in the last 15 days, Involcan has located 24.... in the past week... the triple, which makes this work appreciated, but what would it have its reward if this data were made public, at least in the monthly newsletters published until November 2021 by Involcan and are no longer published, losing a great source of information.
In the Involcan data you can perfectly see how the activity is concentrated in two points in the area of Teide Peak and Pico Viejo, as well as several around the boiler and a signal of earthquakes towards Adeje. Whereas if we look at what's on IGN, the activity focuses on the West of the Cauldron and the Teide.
Special relevance has the area of Fasnia, because in that area is where the most differences are in the location, which leads me to think that the IGN has problems in that area as the localized earthquakes come out with gaps above the value 200 which is it acceptable, some close to 300 even, where I'm sure some are discarded for bad location.
As for the seismic energy released accumulated in Tenerife, there is something very surprising, the expected step arrived in time and form and has been produced, but it has been in the form of a swarm of deep earthquakes in the coastal area of Guimar, Arico and Fasnia around the 13th of May, with a max of Magnitude 2.2.
With this the energy pattern begins to take the form of the devil's ladder and Cantor's function of the seismic energy released since mid-February where he changed the linear trend to one in steps, indicating a more volcanic and predictable seismic. Therefore it moves us to the next step or rebound, which according to this would be for early -mid-June, that is between June 5th and 12th approximately.
es2023jiqmn 13/05/2023 18:33:10 28.2740 -16.3851 21.0 km M 1.7 mbLg from Güímar. ITF
es2023jhxwi 13/05/2023 09:08:52 28.2099 -16.3615 26.0 km M 1.9 mbLg SE FASNIA. ITF
es2023jhush 13/05/2023 07:33:10 28.2051 -16.3956 32.0 km M 2.2 miles from Fasnia. ITF
es2023jfggn 11/05/2023 21:59:14 28.1713 -16.3967 27.0 km M 2.0 mbLg AND ARICO. ITF
https://www.volcanodiscovery.com/.../archive/2023.html
ISLAND OF THE PALM:
If we do the same on this island, nothing in the last 3 days and now that there are apparatuses of Involcan, you can see how the IGN has two activity centers, the first focused on where the volcano came out in 2021 extending east and the capital and the another is in the south side under the peaks with the swarm of these last few months. Instead, the Involcan data only reflects the volcano's data and on one of its legs the summit area (the other Earthquake is from the previous week), not reflecting the deep earthquakes from the east.
It's clear that both would be more efficient if they shared data and stations, but with IGN this is impossible, they don't want to collaborate, let alone on that issue. Actually Involcan has their seismographs because the IGN won't give him access to theirs. It's sad, but this is reality.
As for the seismic energy released accumulated on the island of Palma, it must be emphasized that the postuptive activity that was evolving almost linearly downward, since mid-February we also have another active process that has produced an increase in the amount of seismic energy released accumulated as seen with a more inclined line with Events of more than 2 occurring in the summit area, towards the south, the latest in the period we discuss.
es2023jeaaw 11/05/2023 05:42:47 28.5449 -17.8344 14.0 km M 2.1 mbLg NE OF PALMA FUENCALIENTE. I L I P
es2023ifcox 04/27/2023 14:39:58 28.5532 -17.8282 14.0 km M 2.3 mbLg NE PALMA FUENCALIENTE. I L I P
https://www.volcanodiscovery.com/.../archive/2023.html
These Events seem to be related to magma movements at a depth of 14 km, but in the horizontal, it does not pressurize enough to open, it lacks a lot of energy, nevertheless it is noticeable. At the moment they are postuptive phenomena, and the volcano continues to stop, but more slowly and little by little it will reactivate, hopefully it will take many years, decades or centuries...
So there is tranquility, but the system is not as quiet as they want us to see, no one believes this, just look at the seismograms. By the way, in Tenerife they put some movement in the magma reservoir of Vilaflor at 9 km, indicating regional pressures. We stay waiting for the next moves.
We are in elections, demand your political parties measures for prevention in volcanoes, which then only remember Santa Barbara, from them, when it thunders. and this can't be so, training is needed to reduce volcanic risk and above all, plans and surveillance.
Remember Lanzarote: Nothing, Gran Canaria: Nothing, Fuerteventura: Nothing, Iron: Little, La Palma: Little, Tenerife: The most. We don't even talk about the Gomera, it hasn't erupted in the last 2 million years.
Greetings to all the Canary Islands, especially to the Palmeros who haven't come home, to those who are still unpaid or to those who live poorly in containers. No right, it's been long enough for this to have been fixed. (Rich)

link for pics, charts etc
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#77
my apologies to Jand, I had forgotten that I said I would keep this thread updated while she is otherwise occupied! I was watching Iceland activity just now and it reminded me.

There was a 3.7 on 6th July between GC and Tenerife and there have been the normal smaller tremors on a regular basis. I know that's not a very technical report - if you are interested have a look at the map:

link to IGN

or look at Volcanes y Ciencia Hoy (Facebook)
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#78
Noticias:


The Earthquake of Morocco was felt in Fuerteventura.

It was detected by the IGN seismograph on the island and some residents of Lanzarote and Fuerteventura claim to feel the tremor



NEWSROOMFUERTEVENTURA


The terrible Earthquake that occurred last night around 23:11 hours 71 kilometers southwest of Marrakech and with a magnitude of 6.9 on the Richter scale had such power that it was felt thousands of kilometers from the epicenter.



In this way the IGNE seismograph on the island of Fuerteventura recorded the intensity of the phenomenon, but there are statements from residents of Lanzarote and Fuerteventura who also claim to have felt it.



The intensity of the strong tremor is reflected in that it was felt in towns in the south of the peninsula at the same time as on the island of Fuerteventura more than 2,000 kms away.



The quake struck in Ighlil, in Al Haouz province, at a depth of 18.15 kilometers south of the tourist city of Marrakech. The inhabitants of the area have spent the night awake for the possible aftershocks and in fear that new buildings would collapse.



This type of Earthquake in the area has precedents and was also felt in Fuerteventura. "Agadir has neither Kasbah nor walls, totally destroyed by the terrible Earthquake in Agadir in 1960. This Earthquake, in addition to leaving 15,000 people dead in the coastal city of southern Morocco, destroyed the old school of Tuineje, Fuerteventura, "explains Farah Azcona Cubas on her Twitter account.
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#79
Noticias:

A strong aftershock recorded this morning scares in the Earthquake zone.

A tremor of magnitude 4.6, the first aftershock to exceed 4.5 since the 8th Earthquake, shakes the Atlas area and is felt in Marrakech



NEWSROOMFUERTEVENTURA



An Earthquake of magnitude 4.6, the first aftershock that exceeds 4.5 since the Earthquake last Friday that has left almost 3,000 dead, has shaken at 05.50 this morning the affected Atlas area and has been felt in the city of Marrakech, as published by Diario de Avisos El Español.



Since the Earthquake of magnitude between 6.8 and 7 (depending on the organism that measures it) occurred six days ago, there have been many aftershocks in the area and some have been felt, such as one of 3.9 on Wednesday, which in the village of Imi N'Tala led the rescue services to ask journalists to leave the area due to the danger of landslides.



According to the United States Geological Survey (USGS), the tremor felt on Thursday was magnitude 4.6 and occurred 9.7 kilometers deep near Ighil, the same village in the Atlas Mountains that was the epicenter of the deadly quake.



It is the most important aftershock recorded by the National Geographic Institute (IGN) of Spain since the deadly Earthquake. In this time, there have been about thirty small earthquakes of more than 3.4 magnitude and the highest so far, of 4.3, occurred last Tuesday morning.



Meanwhile, the death toll of the Earthquake has risen to about 3,000, as confirmed by the authorities, who point out that more than 5,600 people have been injured.

link to article for map and chart
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#80
I saw an online article about El Hierro today which reminded me to do a post!

plenty of recent activity in The Canaries including some strongish ones today in El Hierro.

link to IGN
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