Author Topic: El Hierro  (Read 851653 times)

Offline jand

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Re: El Hierro
« Reply #5760 on: December 24, 2020, 11:05:36 AM »
Description of the area La Palma Fuencaliente where most of the earthquakes are occuring.

''The municipality of Fuencaliente covers the southern tip of the island La Palma. The landscape is dominated by the volcanic ridge Cumbre Vieja. The southernmost volcano on this ridge, Teneguía, last erupted in 1971. The fertile soil is used for growing grapes (malvasia wine) and bananas. The yearly production of wine from its 800 ha of vineyards is 2 million litres.[citation needed] There are salt evaporation ponds near the lighthouse, on the southernmost point of the island. Fuencaliente is located 23 km southwest of the island capital Santa Cruz de la Palma.''


https://upload.wikimedia.org/wikipedia/commons/thumb/5/53/La_Palma_municipio_Fuencaliente.svg/320px-La_Palma_municipio_Fuencaliente.svg.png

Offline jand

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Re: El Hierro
« Reply #5761 on: December 24, 2020, 12:31:56 PM »
Translated.

''The National Geographic Institute has detected 281 earthquakes in the last hours in the area near the Cumbre Vieja Volcano, in the south of the island of La Palma, with magnitudes between 1.3 and 2.3 mbLg.

The occurrence of Events of this type in an active volcanic zone is within normality and does not present any risk for normal activity on the island, the IGN has indicated.

The area in which this activity occurs is the same in which similar low-magnitude swarms have occurred in recent months with numerous Events at depths of around 30 kilometers.

Of the 281 earthquakes detected between 9:26 p.m. on Wednesday and 7:01 a.m. this Thursday, 77 have been located.

The IGN seismic network on the island of La Palma is made up of 13 stations that allow real-time monitoring of microseismic activity on the island.''

https://diariodeavisos.elespanol.com/losjardinerostenerife/2020/12/detectados-281-terremotos-en-el-volcan-cumbre-vieja/?fbclid=IwAR21Zy7EUeYBZC80Tzow6NcMXtAU9fd0X27YJsze3nEulg4bAyU6UAAHK24


Fuerteventura Forum

Re: El Hierro
« Reply #5761 on: December 24, 2020, 12:31:56 PM »


Offline jand

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Re: El Hierro
« Reply #5763 on: December 26, 2020, 08:30:17 AM »
Latest update courtesy of Enrique.

Translated.

''DEEP SYSMIC SWARM IN PALM ISLAND, CANARIAS, SPAIN.- 25/12/2020.-Merry Christmas to all first, and active volcanic islands are like this, they like to be noticed. This island has been sleeping or quiet for many years, and although it has had many eruptions in the past, it reminds us that it is active and will have many more future eruptions. What we don't know in a while, but we will. On this occasion the IGN claims to have located 281 events, of which it has located nearly a hundred signs (94 specifically between magnitude 1.5 and 2.3 (and the minimum with one of 1.3) and that when you analyze them, you can see some interesting things:

1.- When all seismic alignments are made, you see several preferential directions, and highlight 3 alignment that form across at 120 o at a point at about 300 m. south of the volcano summit Old Summit 1949 m high above sea level. These alignments indicate something known to us, are the three dorsal or main axles of activity of this colossus volcanic that rises about 6000 meters above the ocean background.

2.- Although they are deep earthquakes, many look like the volcanic-tectonic type, involving a movement of fluids in depth and that configuration at 120 o indicates a thrust of the same to the surface, upward, which should be noticed slightly at GPS stations in the Island if activity continues for more days.

https://previa.uclm.es/.../sismicidad_volcanica%5B1%5D.pdf

3.- These earthquakes do not currently involve a short-term eruption, though if a system reactivation, so that if they are increasingly common, they will be indicating that the system is rearmed for a medium-long eruption deadline (1-8 years), although you can stop and nothing can happen, and even have reactivation phases, it is difficult to know what you will do right now, but the range of possibilities is very big, from nothing to an eruption ..

4.- Of the other parameters such as GPS deformation or gasses, it's very difficult to interpret how little there is. In IGN's, GPS do not see significant changes, if any small moves towards the NE (movement of African plaque) that do not occur as accused in the south of the island, and then it is interesting to see how the LP0 3 rising, while the LP0 4 sinks, indicating possible northward magma migration in the west of the island, the rest shows no relevant changes and it's hard to tell with so little data.

https://www.ign.es/web/ign/portal/vlc-gps-put the Palm -

We'll see what happens, but it tends to calm down until the next onset in a few days / weeks / months. (Enrique).


https://scontent-lhr8-1.xx.fbcdn.net/v/t1.0-9/133883619_1226806001050698_4602719124933423130_o.png?_nc_cat=107&ccb=2&_nc_sid=730e14&_nc_ohc=UT9dIbVYXakAX-zHCJZ&_nc_ht=scontent-lhr8-1.xx&oh=7f5d01ff5c35010e827b0e648ef7f104&oe=600B79F9

Offline jand

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Re: El Hierro
« Reply #5764 on: December 26, 2020, 08:31:49 AM »
The activity is ongoing and the earthquakes are getting more shallow the latest one at 07:38 was actually only 2km deep.

Other depths have been between 12 and 21 km deep.

es2020zilxq 26/12/2020 07:38:48 07:38:48 28.6723 -17.7519 2 1.5 mbLg SE SANTA CRUZ DE LA PALMA.ILP


http://www.ign.es/web/resources/volcanologia/tproximos/canarias.html?fbclid=IwAR3GEqfr-AJg4p18QS_fWpPmSxss6-_xwEAQJjv-33JqoKCac_KxSOqQ0A8

Offline jand

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Re: El Hierro
« Reply #5765 on: December 27, 2020, 07:01:12 AM »
Latest update courtesy of Enrique.

Translated.

''SYSMIC SWARM IN TENERIFE AND CONTINUES LA PALMA WITH OVER 600 REGISTERS, SOMETHING LESS THAN 100 LOCATED, THE LAST A LITTLE MORE CANARIAN SOMERS, SPAIN.- 26/12/2020.-

On the island of Tenerife continues to rattle the phonolithic magmatic camera that is - according to geophysics - under the boiler of Ucanca between 11 and 14 km deep with efforts these days with some earthquakes and small swarms, highlighting a couple of Events, a very deep one 26 km in the mouth zone of Tauce, where the background material of the system would enter and two more lighter 9 and 5 km that would indicate more surface tensions.
Tenerife's volcanic system continues to reactivate slowly for about 4 years and continues with the tran - tran without significant changes at the moment. The magma bag under Vilaflor, more somera has moved little or nothing with some unimportant Earthquake, that is under Adeje, there is another deep and it is also area of entry, which therefore these two deep earthquakes seem to announce more activity in coming weeks and months in the area and maybe some significant swarm (over 100 earthquakes) in Adeje or the Caldera as has been happening since November 2016.

As for the ongoing swarm in La Palma Island, there are now 602 officially registered Events by IGN and about 98 localized. It should be stressed that the last localized earthquakes have a lower depth (25-30 km) than the first (25-35 km), indicating an upward migration of the magma that is intruding the island from the mantle and decreasing the pressure on the deeper levels (lowering the pressure doesn't mean there's less flow in depth) while it's rising to more harsh levels as magma intrudes or progresses to the surface. A most interesting read. Now that is very deep and does not represent any risk, although it will be good to have it controlled, as it should migrate to levels more and more harsh if you have enough energy to do so. (Enrique)

Earthquake maps of the island of Tenerife at 3, 15 and 90 days:

https://www.ign.es/web/resources/volcanologia/SIS/html/TE_SIS_eventos.html?fbclid=IwAR1TxmGkru0W1SmcHe0y2fAGEa6vYfkLxoxudVbZTkO_4octXxvYVr-59JU

Earthquake maps of the island of La Palma at 3, 15 and 90 days:


https://www.ign.es/web/resources/volcanologia/SIS/html/PA_SIS_eventos.html?fbclid=IwAR2OaoUj8EoIbqsjAX6_CSvGekwvg7zYAHZYMTgngMXwR-Az7EyeFOCzPKY




Fuerteventura Forum

Re: El Hierro
« Reply #5768 on: January 01, 2021, 17:49:55 PM »

Offline jand

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Re: El Hierro
« Reply #5769 on: January 05, 2021, 06:26:26 AM »
A 3.2 mg Earthquake this morning North West of Fuerteventura and Lanzarote.

3.2 mbLg ATLÁNTICO-CANARIAS 2021/01/05 05:00:08 10 +info


https://www.ign.es/web/resources/sismologia/www/dir_images_terremotos/detalle/es2021ahryw.gif


Offline jand

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Re: El Hierro
« Reply #5770 on: January 05, 2021, 11:33:02 AM »

Offline jand

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Re: El Hierro
« Reply #5771 on: January 06, 2021, 14:27:56 PM »
Latest update courtesy of Enrique.

Translated.

''SYSMIC AND MICROSISMIC ACTIVITY IN THE CENTER OF TENERIFE, WITH 47 REGISTERED EVENTS AND 10 LOCATED, CANARIAS, SPAIN.- 06/01/2021.-Today the most remarkable activity is focused under the phonolithic magmatic camera and its surroundings, so I highlight 3 earthquakes of magnitude between 1.2 and 14 to 18-21 km under the boiler of Ucanca.

es202 accordahysi 28.2297 05/01/2021 08:24:39-16.6899 21 km M 1.4 mbLg E ISORA GUIDE. ITF
es202 markedahwqh 28.2010 05/01/2021 07:21:41-16.6526 18 km M 1.2 mbLg NW CHASNA VILAFLOR. ITF
es202 28.2370 05/01/2021 07:00:39-16.6543 18 km M 1.4 mbLg N CHASNA VILAFLOR. ITF

And clear these efforts in depth and regionals, have also made us have several between 11 and 14 km deep with efforts these days with some earthquakes and small swarms.

es202 markedaisvq 28.2385 05/01/2021 18:34:40-16.6427 6 km M 0.7 mbLg N VILAFLOR OF CHASNA. ITF
es202 westaisvh 28.1656 05/01/2021 18:34:15-16.7607 17 km M 1.1 mbLg ISORA GUIDE. ITF
es202culadaaiqxo 28.2548 05/01/2021 17:36:16-16.6701 14 km M 1.3 mbLg NW CHASNA VILAFLOR. ITF
es202 espa ipaipaw 28.2469 05/01/2021 16:39:33-16.6163 6 km M 0.9 mbLg N CHASNA VILAFLOR. ITF
es202 foreahzra 28.2687 05/01/2021 08:53:27-16.8589 17 km M 1.6 mbLg SW SANTIAGO DE TEIDE. ITF
es202 markedahvbh 28.2374 05/01/2021 06:33:53-16.6712 12 km M 0.6 mbLg NW CHASNA VILAFLOR. ITF
es202 markedahupm 28.1881 05/01/2021 06:20:08-16.6579 10 km M 1.0 mbLg NW CHASNA VILAFLOR. ITF
es202\\ 28.2494 05/01/2021 06:19:16-16.6958 12 km M 1.0 mbLg NE ISORA GUIDE. ITF
es202 Embraceahssg 28.2468 05/01/2021 05:23:25-16.6859 13 km M 1.4 mbLg NE ISORA GUIDE. ITF
es202 Pleasedahssn 28.2547 05/01/2021 05:23:03-16.7395 16 km M 0.9 mbLg NE ISORA GUIDE. ITF

And IGN posted a note yesterday about this new activity on its news website:
′′ 05-01-2021 14:50 UTC. Microsismic activity inside Tenerife."
From 5:05 p.m. to 8:30 p.m. UTC today January 5, a seismic activity has been detected in 47 small earthquakes that have been possible to locate the 10 s. of greater magnitude, with epicenter inside the Ca añadas del Teide, southwest of Pico Viejo. Earthquake magnitudes are between 0,9 and 1,2 mbLg and their depths between 11 and 17 km.
The seismic activity of the past few hours is located in an area with numerous microsismic activity detected and located in recent months, poses no risk to the population and is within the parameters of normalcy in active volcanic areas, such as the island of Tenerife."

TEXT SOURCE: https://www.ign.es/.../volcanologia/html/CA_noticias.html

And most interesting of all this, some signs are long-term earthquakes or ′′ LPs ", and more specifically LP groups known as drum roll or drum roll, in English: ′′ Drumbeats ′′ which are a type of typical signals of the precursors of volcanic activity that we will see if they apply in this colossus that is the Teide. (e.g. past 7:00 h UTC and 7:21 h, 7:39 h and 8:24 h UTC approx).
By the way, these signs could indicate the movement of magma, under the magma chamber, with a very hot new magma contribution to it, and that we will notice and confirm with more seismicity in the coming days because by mixing the magmas and pressurizing the system is the next step we would have, I leave you a couple reviews or articles on the subject.
- Article on volcanic drum seismicity caused by vaiven movement and magmatic fusion.

https://www.researchgate.net/.../262673023_Volcanic...
- Article on drumbeats and their performance for Tungurahua volcano:
https://agupubs.onlinelibrary.wiley.com/.../2017GL076429

We'll see what happens... (Enrique)

SISM VISOR IN CANARIAS.
http://www.ign.es/.../volcanologia/tproximos/canarias.html
Seismic signs:
https://www.ign.es/.../-/senales-sismicas/spectroDinamico...
Earthquake maps of the island of Tenerife at 3, 15 and 90 days:
https://www.ign.es/.../volca.../SIS/html/TE_SIS_eventos.html
Earthquake maps of Palm Island at 3, 15 and 90 days:
https://www.ign.es/.../volca.../SIS/html/PA_SIS_eventos.html


Offline jand

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Re: El Hierro
« Reply #5773 on: January 12, 2021, 06:02:41 AM »
Latest update courtesy of Enrique.

I had also noticed that IGN had not updated any earthquakes for a couple of days .

Translated.

''DEEP SYSMIC ACTIVITY IN CANARIAS LA PALMA ISLAND, SPAIN.- 11/01/2021.-They are updating data from earthquakes located in La Palma, and showing us some more in the central area of it with three magnitude earthquakes 2.1, 2.0 and 1.9 km deep near midnight January 8th-9th. After midnight you see another tremendous Earthquake, greater magnitude or more superficial at 00:48 h on the 9. th.

es202 markedaopog 28.6049 08/01/2021 23:43:04-17.7756 30 km M 1.9 mbLg NW MAZO VILLA. ILP
es202 E BREADAOPHP 08/01/2021 28.6212 23:35:19-17.6671 29 km M 2.0 mbLg E BRE ÑA LOW. ILP
es202 28.5717 08/01/2021 22:30:26-17.8410 29 km M 2.1 mbLg SW MAZO VILLA. ILP

In addition, more signs are being spotted in the coming days, highlighting what is already evident, the island's deep system is reactivating. I leave you with a few earthquakes that are seen in the spectrum.

Today:
19:43 h UTC - clear Earthquake signal
19:08 h UTC - clear Earthquake signal
17:13 h UTC - clear Earthquake signal
13:57 h UTC - clear Earthquake signal
13:46 h UTC - clear Earthquake signal
13:03 h UTC - very clear water telesism signal
IV 021-01-11 12:47:01.1 8hr 34min ago 38.76 N 29.36 W 10 km M 5.4 AZORES ISLANDS, PORTUGAL
12:54 h UTC - telesism signal not located
12:51 h UTC - very clear previous telesism signal
IV 021-01-11 12:47:01.1 8hr 34min ago 38.76 N 29.36 W 10 km M 5.4 AZORES ISLANDS, PORTUGAL

Yesterday:
17:34 h UTC - clear Earthquake signal
04:40 h UTC - clear Earthquake signal
04:05 h UTC - LP-type Earthquake signal??

Before yesterday:
20:24 h UTC - clear Earthquake signal
04:52 h UTC - clear Earthquake signal
00:48 h UTC - clear Earthquake signal

We'll see what they find.... (Enrique)

https://scontent-lhr8-1.xx.fbcdn.net/v/t1.0-9/138246567_1238074759923822_6529769978079538577_o.jpg?_nc_cat=107&ccb=2&_nc_sid=730e14&_nc_ohc=BLSkbu398k8AX-tmjyI&_nc_ht=scontent-lhr8-1.xx&oh=0bc0c84083b259b3a7bd5ce15ab2cf81&oe=60218C07

https://scontent-lht6-1.xx.fbcdn.net/v/t1.0-9/137628456_1238077609923537_8966843844754548978_o.png?_nc_cat=103&ccb=2&_nc_sid=730e14&_nc_ohc=6LdJng9dAdwAX8aws_l&_nc_ht=scontent-lht6-1.xx&oh=75ffb79a5c99e64f52612bded67121db&oe=6022BE4C

https://scontent-lhr8-2.xx.fbcdn.net/v/t1.0-9/138237385_1238077799923518_660130434988096315_o.jpg?_nc_cat=104&ccb=2&_nc_sid=730e14&_nc_ohc=pmZuvoOVI0oAX_MPlpC&_nc_ht=scontent-lhr8-2.xx&oh=674f580dc280aeb26e73c435a6650f05&oe=60234EAF


Offline jand

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Re: El Hierro
« Reply #5775 on: January 16, 2021, 06:41:30 AM »
The activity has gone back to Tenerife and Volcano Enmedio (between Tenerife and Gran Canaria).

http://www.ign.es/web/resources/volcanologia/tproximos/canarias.html?fbclid=IwAR3GEqfr-AJg4p18QS_fWpPmSxss6-_xwEAQJjv-33JqoKCac_KxSOqQ0A8


Offline jand

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