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El Hierro

Started by admin, October 12, 2011, 10:40:14 AM

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jand

There has been an earthquake East of La Gomera this morning .

http://www.ign.es/web/resources/sismologia/www/dir_images_terremotos/detalle/es2017pjlck.gif

Updates by IGN.

1.4 mbLg   E SAN SEBASTIÁN DE LA GOMERA.I   2017/12/27 21:22:29  4  +info

.9 mbLg  SE ARICO.ITF   2017/12/27 19:55:29  18   +info

1.8 mbLg   ATLÁNTICO-CANARIAS  2017/12/27 09:04:54  24  +info

.9 mbLg   SE ICOD DE LOS VINOS.ITF   2017/12/27 04:19:02  9  +info

.9 mbLg  S ICOD DE LOS VINOS.ITF  2017/12/27 04:18:18  10  +info

1.1 mbLg   NE GUÍA DE ISORA.ITF   2017/12/27 04:03:11   15  +info

http://www.ign.es/web/resources/volcanologia/tproximos/canarias.html

jand

Latest report courtesy of Enrique.

Translated.

''more seismicity located in deferred in the area area Los Vinos Tenerife, Canary Islands, Spain.- 28/12/2017.-like other days today I see lines of events without locating, but after a few days they are located The most notable on deferred, with up to 48 H-72 h later so that in this case it is 3 earthquakes and microdisks located with 2 in the area of Los Vinos and one in guide of Isora.

The truth is that these three new ones located in a delayed fashion and which occurred yesterday are quite interesting:

The first of 04:03 located by the ign with a magnitude 1.1 in guide guide to 14.7 km deep until it looks like an LP, but without official confirmation it is hard to see by not being able to contrast with other stations, already Which is especially marked at low frequencies.

As for the two microdisks of magnitude 0.9 of Los Vinos, they look like a small swarm to be almost at the same time (44 sec), position and depth of 9.2 and 9.7 km, continuation of the Seismicity of the past day 26 and previous days that went through the same area and depth and area. (Enrique).

Yesterday day 27
Es2017pjdcm 27/12/2017 04:03:11 04:03:11 28.2598-16.7259 14.7 km m 1.1 mblg ne guide. Itf - new
Es2017pjdek 27/12/2017 04:18:18 04:18:18 28.3031-16.7003 9.7 km m 0.9 mblg Los Vinos. Itf - new
Es2017pjdel 27/12/2017 04:19:02 04:19:02 28.3159-16.6989 9.2 km m 0.9 mblg is Los Vinos. Itf - new

And remember the antesdeayer day 26
Es2017pihap 26/12/2017 01:47:37 01:47:37 28.3172-16.7028 12.0 km m 1.1 mblg Los Vinos. Itf
Es2017pikbm 26/12/2017 08:24:13 08:24:13 28.3054-16.6834 10.0 km m 1.1 mblg Los Vinos. Itf
Es2017pikcc 26/12/2017 08:27:17 08:27:17 28.3324-16.7057 11.0 km m 1.4 mblg Los Vinos. Itf

jand

2.0 mbLg   ATLÁNTICO-CANARIAS   2017/12/29 01:27:02  15  +info

2.0 mbLg   ATLÁNTICO-CANARIAS   2017/12/29 00:57:08   17   +info

2.0 mbLg   ATLÁNTICO-CANARIAS   2017/12/28 18:16:21  4  +info

http://www.ign.es/web/resources/volcanologia/tproximos/canarias.html

jand

Another deep 3.4 earthquake North of Tenerife and Gran Canaria .

3.4 mb   ATLÁNTICO-CANARIAS  2017/12/29 11:07:21  51  +info

http://www.ign.es/web/resources/sismologia/www/dir_images_terremotos/detalle/es2017pkmjd.gif

jand

#4744
The latest report by Involcan is out now .

Quoted by Enrique.

No se pierdan el Informe Guayota de INVOLCAN de la última semana, en el que aparece que el CO2 está por encima de lo normal, así como la energía sísmica y la temperatura de las fumarolas.(Enrique)

''Do not miss the report of the last week, in which the co2 is above normal, as well as the seismic energy and the temperature of the smokers. (Enrique)''

https://scontent-lht6-1.xx.fbcdn.net/v/t1.0-9/26165534_1808545742512143_6998067482299304729_n.png?oh=41869fd173cf2c240ab60b74706dabd7&oe=5AF92724

Questions asked on the Involcan Facebook Page.

''El planteamiento es muy visual aunque agradecería unas pequeñas líneas comentando los datos. Pese al semáforo verde, hay varios parámetros con anomalías, podrían explicarnos las posibles razones?
Por otro lado el aumento de sismicidad y su localización (al menos en parte) en el entorno del Teide, qué puede significar? Se ha podido definir algún evento de tipo LP? Muchas gracias por informar.

The approach is very visual, although i would appreciate a few small lines commenting on the data. Despite the green light, there are several parameters with anomalies, could you explain the possible reasons?
On the other hand the increase in seismicity and its location (at least in part) in the teide environment, what can it mean? Have you been able to define an LP event? Thank you very much for reporting.

San Sanz Mike
San Sanz Mike No es trabajo de ellos esa información lo mismo que la da involcan la debería dar el IGN ,Pero no lo hacen ellos trabajan para otras instituciones y las explicaciones se las dan a quienes les apoyan cómo son el cabildo y el gobierno de canarias!

It is not work of them that information is the same as the da should give the ign, but they do not work for other institutions and the explanations are given to those who support them how are the cabildo and the government of the Canary Islands!

http://www.involcan.org/wp-content/uploads/GUAYOTA/guayota-tfe-en-bn.pdf

jand

Latest update courtesy of Enrique.

Translated.
Earthquake of 3.4 North of Gran Canaria and continue the seismicity in the area area of Los Vinos Tenerife, and in the area of the volcano in the middle, Canary Islands, Spain.- 29/12/2017.-almost At noon there has been a regional earthquake to the north of Gran Canaria and northeast of the peninsula of anaga in Tenerife in depth, 51 km, which makes you think you will bring it to earth, it will be more shallow and surely Increase of magnitude when you check.

Es2017pkmjd 29/12/2017 11:07:21 11:07:21 28.8915-15.5018 50.9 km m 3.4 MB Atlantic-Canary - located about 90 km north of Gran Canaria and about 80 km to Northeast of the peninsula in Tenerife.

As usual, there are still many earthquakes to locate yesterday and today they are visible in the spectrogram, for example at 04:39 pm today, but a while ago they have put one at 19:09 a little more Highlight of magnitude 1.3 in the area of the swarm of wines 10.3 km deep. Edited: a while ago they have placed two smaller earthquakes in 1.1 and 0.9 in the same area at a depth of 11.1 and 9.6 km respectively.

Es2017plaei 29/12/2017 19:09:30 19:09:30 28.3032-16.6980 10.3 km m 1.3 mblg of wine. Itf
Es2017pknkn 29/12/2017 13:30:40 13:30:40 28.3177-16.7048 11.1 km m 1.1 mblg of wine. Itf-new
Es2017pkohe 29/12/2017 15:11:53 15:11:53 28.3059-16.7008 9.6 km m 0.9 mblg of wine. Itf-new

In the area of the volcano in between three earthquakes between the evening of yesterday and this morning all of them of magnitude 2.0 in the 20 km in the environment. For when a submarine seismograph in the area, the location error of all this seismicity is very large. The Usgs has some very cool in the axial area, to see for when we have some wise men to bring us some. (Enrique).

Es2017pkemn 28/12/2017 18:16:21 18:16:21 28.0725-16.0234 4.0 km m 2.0 Mblg Atlantic-Canary - Located 11 km east of the volcano in the middle to Gran Canaria
Es2017pkhoc 29/12/2017 00:57:08 00:57:08 28.0254-16.2709 16.6 km m 2.0 Mblg Atlantic-Canary - Located 11 km southwest of the volcano in the middle
Es2017pkibn 29/12/2017 01:27:02 01:27:02 28.1174-16.1045 15.3 km m 2.0 Mblg Atlantic-CANARY - LOCATED 6 km northeast of the volcano in the middle

https://scontent-lhr3-1.xx.fbcdn.net/v/t1.0-9/26168987_471796229885016_9011560131968020473_n.jpg?oh=af2555e480a72f06c75484c688ac3880&oe=5AC75167

https://scontent-lhr3-1.xx.fbcdn.net/v/t1.0-9/26166936_471798529884786_8342294100039075737_n.jpg?oh=0558cf52bfa584a06a22a9f334b0fc95&oe=5AF92B71
''
https://scontent-lhr3-1.xx.fbcdn.net/v/t1.0-9/26166662_471797836551522_529081958948451179_n.jpg?oh=3f74bebab665d80a6a339035f781f190&oe=5ABC0F56

jand

Activity continuing

1.9 mbLg   ATLÁNTICO-CANARIAS   2017/12/30 15:34:37  +info

2.1 mbLg   ATLÁNTICO-CANARIAS   2017/12/30 14:57:41  31  +info

1.3 mbLg   S ICOD DE LOS VINOS.ITF   2017/12/29 19:09:30  10  +info

.9 mbLg   S ICOD DE LOS VINOS.ITF   2017/12/29 15:11:53  10  +info

1.1 mbLg   S ICOD DE LOS VINOS.ITF  2017/12/29 13:30:40  11  +inf

http://www.ign.es/web/resources/volcanologia/tproximos/canarias.html

jand

Latest update courtesy of Enrique:

''Earthquake from 2.1 to the North-East of Gran Canaria and in the area of the volcano in the middle, Canary Islands, Spain.- 29/12/2017.-Mid-afternoon have located a couple of earthquakes, a depth of magnitude 2.1 to 18 km to ne of the coast of Gran Canaria 31 km deep and another very close to the volcano in the middle of magnitude 1.9 without depth about 4 km to the top of the Volcano.

Es2017pljgk 30/12/2017 14:57:41 14:57:41 28.2049-15.2243 31.0 km m 2.1 Mblg Atlantic-Canary-18 km to the east of the port of Las Palmas de Gran Canaria.
Es2017pljld 30/12/2017 15:34:37 15:34:37 28.0601 16.1312 _._ km m 1.9 Mblg Atlantic-Canary-4 km to the volcano in the middle.

As previous days, there is quite a lot of seismicity and microsismicidad in Maci, past midnight, with clear events at 00:05 h and 00:43 h and 00:44 h UTC so it is possible to have some inside of Tenerife, Either in the area of Los Vinos, on the south ridge in vilaflor or in the southern area of the central teide peak. There is also one at noon at 11:15 H, 11:45 H, 11;47 h, 11:48 H 12:35 h UTC. Let's see what they locate. (Enrique).

https://scontent-lhr3-1.xx.fbcdn.net/v/t1.0-9/26047255_472199289844710_8783270398184331319_n.jpg?oh=9f3f353b56db942bd8fc63749e172b5f&oe=5AB8971E

TamaraEnLaPlaya

Happy New Year Jand, thanks for all the info you have provided during the year.

jand

Happy New Year Tamara to you hope you find all the updates interesting and informative to know whats happening around the Canary Islands .



jand

There has been a shallow earthquake near the summit of  Volcano Teide as reported courtesy of Enrique.

,,Earthquake of magnitude 1.7 in el teide, Tenerife, Canary Islands, Spain.- 04/12/2017.-a while ago the ign has located an earthquake near the teide summit at about 2 Miles in depth. Possibly in the hydrothermal vent system of mount teide. We'll see what happens next. See if you can see the seismograms and spectrograms..''

22:53:31 22:53:31 28.2690 Itf

https://scontent-lhr3-1.xx.fbcdn.net/v/t1.0-9/26165528_474136199651019_2432388130078206395_n.jpg?oh=9d3c04ef5e21aef90f05c0d71d78b76b&oe=5AC0D494

http://www.ign.es/web/ign/portal/ultimos-terremotos/-/ultimos-terremotos/getDetails?evid=es2018acald&zona=1

jand

1.7 mbLg    S LA GUANCHA.ITF   2018/01/03 22:53:31  2  +info

.8 mbLg  NW FASNIA.ITF  2018/01/02 14:55:00   7   +info

1.6 mbLg   SE FASNIA.ITF  2018/01/01 20:30:09  21  +info

1.9 mbLg   E EL PUEBLO.ILP   2018/01/01 09:28:16  9   +info


http://www.ign.es/web/resources/volcanologia/tproximos/canarias.html

jand

IGN have not updated yet anything over the last couple of days .

This morning though there have already been 2 deeper earthquakes close to the east coast of Tenerife .

1.9 mbLg   SE FASNIA.ITF   2018/01/07 05:08:29   21  +info

2.6 mbLg   ATLÁNTICO-CANARIAS   2018/01/07 04:53:21   26  +info

2.4 mbLg   ATLÁNTICO-CANARIAS  2018/01/07 04:31:12  28  +info

http://www.ign.es/web/resources/sismologia/www/dir_images_terremotos/detalle/es2018aeekn.gif

http://www.ign.es/web/resources/volcanologia/tproximos/canarias.html

http://www.ign.es/web/resources/sismologia/www/dir_images_terremotos/detalle/es2018aeeib.gif

jand

#4753
Latest report courtesy of Enrique.

Translated.

Three earthquakes located off the coast of Tenerife, Canary Islands, Spain.- 07/12/2017-three clearly tectonic earthquakes for regional efforts that are clearly reflected in the spectrogram of maci have been located by the ign in front of The East Coast of the island of Tenerife. The first has been of magnitude 1.9 and 21.1 km deep in the area of fasnia and a little further to the north, almost in front of the Valley Valley, two more notable of magnitude 2.4 and 2.6 have been located. At a depth of about 27.9 km and 25.7 km respectively (Enrique)

Es2018aeeib 07/01/2018 04:31:12 04:31:12 28.2632-16.2604 27.9 km m 2.4 Mblg Atlantic-Canary Islands
Es2018aeekn 07/01/2018 04:53:21 04:53:21 28.2522-16.2458 25.7 km m 2.6 Mblg Atlantic-Canary Islands
Es2018aeeml 07/01/2018 05:08:29 05:08:29 28.1995-16.3352 21. 1 KM M 1.9 mblg is. Itf

https://scontent-lhr3-1.xx.fbcdn.net/v/t1.0-9/26195891_475608092837163_4077013129071846963_n.jpg?oh=e8341fffdaf977181eac931d9c26c57b&oe=5AF059B5

https://scontent-lhr3-1.xx.fbcdn.net/v/t1.0-9/26196055_475608096170496_77686812289833969_n.jpg?oh=7d98cdf9e01f8f98e40b4082ff7d7baf&oe=5AB76AC2


Still ongoing discussions on the internet regarding the recent activity pasted below are parts of some.

Question relating to the above report by Enrique :

San Sanz Mike :

''En serio sigue diciendo que todo es normal? 2.4 km de profundidad eso es magmatico y encima un dos por uno! Enrique podría ser 4 o incluso 5 hay dos líneas menos marcada desde el espectograma de (MACI) si miramos otros sismografos quizás lo veamos mejor!

Translated :
Do you really keep saying that everything is normal? 2.4 miles deep that's magmatico and over a two-by-one! Enrique could be 4 OR EVEN 5 there are two less marked lines from the spectrograph of (Maci) if we look at other seismographs we may see it better!


Answer by
Guona Gervina:

Aunque recientemente se reportaron eventos someros, en esta información las profundidades que estimaron son entre 21km y 28km.
La actividad es lógica y manifiesta, afortunadamente se han incrementado los equipos de detección y análisis, por eso es importante vuestra dedicación en el estudio y divulgación de los datos suministrados.
Los territorios volcánicos son atractivos por muchos motivos, es normal vivir en ellos y visitarlos pero es fundamental hacerlo con prevención e información a todos los niveles.

Translated.

Although events have recently been reported, in this information the depths they estimated are between 21 km and 28 km.
The activity is logical and manifest, fortunately the detection and analysis teams have been increased, so your dedication to the study and dissemination of the data provided is important.
Volcanic territories are attractive for many reasons, it is normal to live in them and visit them but it is essential to do so with prevention and information at all levels.

San Sanz Mike:
Question:
San Sanz Mike Que razón tienes de hecho escribimos un artículo del cual en algunas páginas nos trataron de alarmistas ,y solo decir que una erupción es difícil predecirla pero si aparte que es complicado no muestran las cosas como son más complicado aun y también poner que muchos dicen esos movimientos son de que es una isla volcánica pero no saben que esa montaña o la roca cómo alguno lo llaman es un volcán el 3 volcán más grande y alto del mundo con muestras del pasado haber sido capaz de destozar la isla en el pasado y esas pruebas están ya que es un estrato volcán un volcán formado sobre otro a fecha de hoy buscan todavía el anterior volcán en las zonas de las cañadas ,y si hizo desaparecer la isla en el pasado puede volver hacerlo en el futuro y el Echeyde tiene una erupción al siglo lo que es igual cada 100 años y llevamos en edad geológica 115 vamos estámos pasado de fecha ,y los que decimos que hay que prepararse y decir esto no es alarmar si no prevenir para lo que pueda pasar y SOBRE TODO EDUCAR, un saludo Guona Gervina

Translated:

San Sanz Mike :

What a reason you have in fact wrote an article which on some pages treated us as an alarmist, and just say that an eruption is difficult to predict but if it is complicated they do not show things as they are more complicated and also put many people say those moves They are a volcanic island but they do not know that that mountain or rock how they call it is a volcano the 3 largest and highest volcano in the world with samples of the past having been able to destozar the island in the past and those Evidence is as it is a volcano layer a volcano formed about another to date is still looking for the previous volcano in the areas of the cañadas, and if it made the island disappear in the past it can go back in the future and the echeyde has a rash To the century which is equal every 100 years and we are in geological age 115 we are past date, and those who say we need to prepare and say this is not alarm if not to prevent what can happen and above all Educate, a greeting Guona Gervina.




jand

Latest report courtesy of Enrique.

Translated.

''DOS SISMOS LOCALIZADOS MÁS Y REVISADOS LOS TRES DE AYER FRENTE A LA COSTA DE TENERIFE, CANARIAS, ESPAÃ'A.- 07/12/2017 - Hoy se han localizado dos sismos en el archipiélago canario, uno entre Fuerteventura y Gran Canaria de 2.5 de magnitud y a una profundidad de 14.3 km. El otro ha sido frente a las costas de Arico en el este de Tenerife de una magnitud 1.4 y a una profundidad de 8.5 km.

SISMOS DE HOY
es2018aeoef 08/01/2018 01:41:31 01:41:31 27.8738 -15.0114 14.3 km M 2...
See More
040.- Two earthquakes located more and revised the three of yesterday off the coast of Tenerife, Canary Islands, Spain.- 07/12/2017-today, two earthquakes have been located in the Canary Islands, one between fuerteventura and Gran Canaria Of 2.5 magnitude and at a depth of 14.3 km. The other has been off the coast of arico in the east of Tenerife of a magnitude 1.4 and at a depth of 8.5 km.

Earthquakes today
Es2018aeoef 08/01/2018 01:41:31 01:41:31 27.8738-15.0114 14.3 km m 2.5 Mblg Atlantic-Canary Islands - between fuerteventura and Gran Canaria

Es2018aeoil 08/01/2018 02:17:03 02:17:03 28.1229-16.3715 8.5 km m 1.4 mblg is. Itf

In the seismogram of Maci there are lines of earthquakes, electric parasites or jumps and there are also very clear signs of work near the sensor, possibly a road or road. They start at 8, stop, eat breakfast, follow after lunch, stop again a little before 13:00 pm and continue at 14:00 pm in the afternoon until 17:30 pm more or less Uninterrupted.

The three earthquakes yesterday have been relocated by the ign off the east coast of the island of Tenerife, with small variations in depth, position and magnitude (Enrique).''

Earthquakes Yesterday:
Es2018aeeib 07/01/2018 04:31:12 04:31:12 28.2812-16.2663 28.7 km m 2.5 Mblg Atlantic-Canary Islands
Es2018aeekn 07/01/2018 04:53:22 04:53:22 28.2764-16.2625 26.5 km m 2.6 Mblg Atlantic-Canary Islands
Es2018aeeml 07/01/2018 05:08:29 05:08:29 28.2681-16.2998 24.5 km m 2.1 mblg is candelaria. Itf

Original Earthquakes Yesterday.:
Es2018aeeib 07/01/2018 04:31:12 04:31:12 28.2632-16.2604 27.9 km m 2.4 Mblg Atlantic-Canary Islands
Es2018aeekn 07/01/2018 04:53:21 04:53:21 28.2522-16.2458 25.7 km m 2.6 Mblg Atlantic-Canary Islands
Es2018aeeml 07/01/2018 05:08:29 05:08:29 28.1995-16.3352 21. 1 KM M 1.9 mblg is. Itf

http://www.ign.es/web/resources/volcanologia/tproximos/canarias.html

jand

Interesting Article .

Translated.

''A study finds indications of the existence of a great submarine fault between Tenerife and Gran Canaria
The discovery would connect the volcanic processes that formed the Archipelago with the tectonic movements of the Atlas.

Geologists from two Spanish universities have found in the submerged part of Gran Canaria indications of the existence of a large submarine fault between this island and Tenerife that would connect the volcanic processes that formed the Archipelago with the tectonic movements of the Atlas.

Researchers Isabel Blanco, of the University of Burgos, and Fuensanta G. Montesinos and José Arnoso, of the Complutense of Madrid, publish this month in the journal Scientific reports , of the Nature group , the results of the review they have done on the data magnetic collected in the Canary archipelago by the National Geographic Institute (IGN) in the nineties.

These three researchers explain that they have found evidence of the existence in the submerged part of the northwest of Gran Canaria of a large rocky body with inverse polarity to the current magnetic orientation of the Earth and a size that represents almost a fifth of the entire building of the island.

In this sense, remember that the huge mountain that forms on the seabed Gran Canaria has a volume of between 35,000 and 40,000 cubic kilometers, in which the island that rises almost 2,000 meters above the sea only accounts for 2% of the total.

The body with magnetic anomalies that have detected in the northwest of Gran Canaria has between 2,100 and 10,000 cubic kilometers of volume, its shape is elongated and narrow, extends from East-Northeast to West-Southwest and extends vertically from the bed from the sea up to 6,000 or 13,000 meters below.

The authors consider that this type of geometry points to magmas that emerged in the growth phase of Gran Canaria under the influence of a large fault, and at a time in the past of the Earth in which the magnetic poles were inverted with respect to the present (hence its inverse polarization).

This article enters fully into a decades-long debate: the one about the geological mechanism that formed (and continues to form) the Canary Islands, if it is a hot spot under the earth's crust that has been appearing magma towards the surface while the plate on which the Archipelago is located moves towards the East or if it is the result of tectonic mechanisms.

At this time, the most accepted explanation is the first one. The signatories of this work do not refute it, but consider that the existence of a fault between Tenerife and Gran Canaria linked in some way to the Atlas Mountains helps to better explain the rapid growth experienced by some of its islands within that pen scheme. magmatic on which the islands move.

This is not the first time that the existence of a fault in the funds located between Gran Canaria and Tenerife is suggested. This was done in 1971 by two British scientists (Bosshard and MacFarlane) after a gravimetric study and the hypothesis regained strength after a 5.2 earthquake that occurred in that area in 1989.

Those responsible for the work published this month Scientific reports highlight that their data coincide in an "extraordinary" way with those obtained four decades ago by Bosshard and MacFarlane and "prove both the presence of an important tectonic element and its influence in the first moments of evolution of the islands".

"It is worth specifying that, although this fault between Tenerife and Gran Canaria has not been active in recent times nor is it today, our magnetic model indicates that it conditioned the rise of magma in the central part of the archipelago during the first stages of growth of the island of Gran Canaria ", they add.

The thesis of these geologists, linked to the Geodesy group of the Complutense, is that "the genesis of the Canary Islands was very conditioned by a tectonic context of tearing probably connected to the tectonic movements of the Atlas", in North Africa.''

http://www.eldiario.es/canariasahora/sociedad/estudios-indicios-falla-submarino-Tenerife-Gran_Canaria_0_727927426.html#click=https://t.co/A7M41ACeYz

jand

There was a small swarm of earthquakes Tenerife yesterday all at deeper depths.

2.0 mbLg   SE ARICO.ITF   2018/01/12 20:55:12   34   +info

1.9 mbLg   SE ARICO.ITF   2018/01/12 20:34:11   32   +info

2.0 mbLg   SE ARICO.ITF   2018/01/12 20:20:49  35  +info

2.5 mbLg   SE ARICO.ITF   2018/01/12 20:16:44   33  +info

2.0 mbLg   SE ARICO.ITF  2018/01/12 20:13:02  34   +info

2.1 mbLg  SE ARICO.ITF   2018/01/12 20:03:30  33  +info

1.7 mbLg   SE ARICO.ITF   2018/01/12 20:00:26  27  +info

http://www.ign.es/web/resources/volcanologia/tproximos/canarias.html

jand

#4757
Report courtesy of Enrique regarding the swarm.

Translated.

''deep seismic swarm off the coast of arico in Tenerife, Canary Islands, Spain. A SEISMIC SWARM IS OCCURRING in the last few minutes, it is not known whether volcanic or tectonic but is located according to the ign about 4-6 km sea inside the coast of arico and one on the coast line. Although there are more than a dozen lines in the spectrogram spectrogram.

At the moment they have located 7 that are the most remarkable with magnitudes between 1.7 and 2.5 and at a depth between 27.1 and 34.8 km. Some have been able to feel weakly, don't forget to fill out the questionnaire (Enrique).''

http://www.ign.es/web/ign/portal/sis-cuestionario-macrosismico

https://scontent-lhr3-1.xx.fbcdn.net/v/t1.0-9/26230307_477825799282059_90212322812083526_n.jpg?oh=ad468916965ecb1007404687970851b4&oe=5AB100CD

https://scontent-lhr3-1.xx.fbcdn.net/v/t1.0-9/26239407_477827665948539_4805814383674874938_n.jpg?oh=b4f7bc3342d8ceff918aa0e12fe23255&oe=5AB2617D

jand

IGN have updated the swarm of earthquakes for the 12th January there are 12 in total now all at deeper depths.

2.0 mbLg   SE ARICO.ITF   2018/01/12 20:55:12  34  +info

1.9 mbLg   SE ARICO.ITF   2018/01/12 20:34:11   32   +info 

1.6 mbLg   SE FASNIA.ITF   2018/01/12 20:24:34   29   +info

1.6 mbLg   E ARICO.ITF   2018/01/12 20:22:10   30  +info

2.0 mbLg   SE ARICO.ITF   2018/01/12 20:20:49   35   +info

2.3 mbLg   E ARICO.ITF   2018/01/12 20:16:44   30   +info

1.7 mbLg   E ARICO.ITF   2018/01/12 20:13:02   31   +info

1.5 mbLg   SE ARICO.ITF   2018/01/12 20:05:45   28   +info

1.6 mbLg   E ARICO.ITF   2018/01/12 20:03:59   30   +info

2.0 mbLg   SE ARICO.ITF   2018/01/12 20:03:30   32   +info

1.7 mbLg   SE ARICO.ITF   2018/01/12 20:02:18  31  +info

1.5 mbLg   SE ARICO.ITF   2018/01/12 20:00:26   27   +info

http://www.ign.es/web/resources/volcanologia/tproximos/canarias.html

jand

Latest report courtesy of Enrique regarding the latest activity .

Translated.

''two earthquakes South of the deep seismic swarm a few days ago off the coast of arico in Tenerife, and more earthquakes relocated, Canary, Spain.- today we have two earthquakes of magnitude 1.7 located between Tenerife and Gran Canaria A little further south from where last Friday we had a deep seismic swarm to something less than 24 km deep. There are a few more lines at 22:29 H, 01:01 h and 03:17 H, but have not yet been located.

Es2018ajmki 15/01/2018 03:37:51 28.0617-16.3384 23.9 km m 1.7 Mblg Atlantic-Canaries
Es2018ajmpc 15/01/2018 04:15:37 28.0550-16.2867 23.8 km m 1.7 Mblg Atlantic-Canaries

In addition, the ign has relocated in addition to the 7 initials that have generally been relocated in position except one, less magnitude and less depth except one. There are 6 new ones that make a total of 13 earthquakes with magnitudes between 1.5 and 2.5 and at a depth between 27.3 and 34.8 km. (Henry)

Es2018aidaa 12/01/2018 20:00:26 28.1123-16.3753 27.1 km m 1.7 Itf - first calculation 1.
Es2018aidaa 12/01/2018 20:00:26 28.1212-16.4016 27.3 km m 1.5 Itf - earthquake already located revised 1.

Es2018aidae 12/01/2018 20:02:18 28.1135-16.3935 30.5 km m 1.7 Itf - new earthquake revised 2.

Es2018aidag 12/01/2018 20:03:30 28.1222-16.3755 33.4 km m 2.1 Itf - first calculation 3.
Es2018aidag 12/01/2018 20:03:30 28.1356-16.3330 31.6 km m 2.0 Itf - earthquake already located revised 3.

Es2018aidah 12/01/2018 20:03:59 28.1489-16.3534 30.0 km m 1.6 mblg and arico. Itf - new earthquake revised 4.

Es2018aidak 12/01/2018 20:05:45 28.1377-16.3437 27.8 km m 1.5 Itf - new earthquake revised 5.

Es2018aidbj 12/01/2018 20:13:02 28.1443-16.4304 34.3 km m 2.0 Itf - first calculation 6.
Es2018aidbj 12/01/2018 20:13:02 28.1401-16.3298 30.9 km m 1.7 mblg and arico. Itf - earthquake already located revised 6.

Es2018aidca 12/01/2018 20:16:44 28.1441-16.3770 33.2 km m 2.5 Itf - first calculation 7.
Es2018aidca 12/01/2018 20:16:44 28.1496-16.3644 30.0 km m 2.3 mblg and arico. Itf - earthquake already located revised 7.

Es2018aidci 12/01/2018 20:20:49 28.1527-16.3904 34.8 km m 2.0 Itf - first calculation 8.
Es2018aidci 12/01/2018 20:20:49 28.1527-16.3904 34.8 km m 2.0 Itf - earthquake already located revised 8.

Es2018aidcl 12/01/2018 20:22:10 28.1460-16.3451 30.1 km m 1.6 mblg and arico. Itf - new earthquake revised 9.

Es2018aidcp 12/01/2018 20:24:34 28.1611-16.3356 29.2 km m 1.6 Itf-earthquake new revised 10.

Es2018aidec 12/01/2018 20:34:11 28.1434-16.3621 32.4 km m 1.9 Itf - first calculation 11.
Es2018aidec 12/01/2018 20:34:11 28.1385-16.3585 30.9 km m 1.6 Itf - earthquake already located revised 11.

Es2018aidgk 12/01/2018 20:55:12 28.1469-16.3702 34.4 km m 2.0 Itf - first calculation 12.
Es2018aidgk 12/01/2018 20:55:12 28.1468-16.3738 33.8 km m 1.8 Itf - earthquake already located revised 12.

Es2018aidkk 12/01/2018 21:26:49 28.1432-16.3896 32.2 km m 1.6 Itf - new earthquake revised 13.

http://www.ign.es/web/resources/volcanologia/tproximos/canarias.html

https://scontent-lhr3-1.xx.fbcdn.net/v/t1.0-9/26734209_478954272502545_4390697143155009849_n.jpg?oh=892fb3a2c61c044ca4275b8158a3813e&oe=5AFDA65F

https://scontent-lhr3-1.xx.fbcdn.net/v/t1.0-9/26733355_478953529169286_2146887240082786340_n.jpg?oh=1eda45a08540297ae4970be0c0cc68c1&oe=5AF6EDBC

jand

Interesting article parts posted below  the full article can be found on the link posted at the end.

The Canary Islands is among the most active volcanic archipelagos. Indeed, Tenerife is one of the world`s largest active volcanoes having experienced numerous Plinian eruptions and caldera-collapses, many of which have ejected volumes up to fifty times greater than the 1980 Mount St Helens eruption26,27,28. Furthermore, the Canary Islands, and in particular Tenerife, have incurred numerous large landslides over the last seven million years (roughly every 150 to 250 kyr) with volumes often over 300 km3 (Fig. 1)6,7,8. There is growing evidence that suggests explosive eruptions and mass wasting processes have a cause-and-effect relationship in ocean island settings7,12,29,30,31,32,33,34; whereas some other terrestrial volcanoes show no such relationship9,24,25. During the development of the Canadas Upper Group (1.56 Ma to 0.17 Ma) on Tenerife, in the Western Canary Islands, the Canadas volcano underwent three distinctive phases of growth and destruction, each ending with both a caldera eruption and a coeval lateral flank collapse (Fig. 2)7,8,29,30,31,32,33,34,35. Thus Tenerife presents an excellent opportunity to examine the relationships between these two destructive processes.

https://media.springernature.com/m685/springer-static/image/art%3A10.1038%2Fs41598-018-19285-2/MediaObjects/41598_2018_19285_Fig1_HTML.jpg

Map of the Canary Islands and the Moroccan Turbidite System. Canary Islands debris avalanche deposits shown in black, while Icod deposit is in dark green, the Orotava deposit in dark blue, Roques de Garcia in red, and Cumbre Neuva in yellow. Pale overlay signifies the spatial distribution of the sediment gravity flow deposits associated with the Icod landslide from Northern Tenerife. Sediment core locations are shown as red circles, while cores referenced in this contribution are in yellow and labelled (including ODP Sites 950, 951 and 952). Abbreviations are: AC = Agadir Canyon, AB = Agadir Basin, MAP = Madeira Abyssal Plain, SAP = Seine Abyssal Plain, MDCS = Madeira Distributary Channels, and CBR = Casablanca Ridge. Canary Islands landslides Icod (brown), Orotava (purple) and Rogues de Garcia (red) from Tenerife and Cumbre Nueva (grey). May also shows the area extent of the turbidites associated with the Icod landslide. Map was generated using ArcGIS 10.1 software based upon bathymetric and digital elevation data from GEBCO.

https://media.springernature.com/m685/springer-static/image/art%3A10.1038%2Fs41598-018-19285-2/MediaObjects/41598_2018_19285_Fig2_HTML.jpg

Timing of flank collapses from Northern Tenerife and caldera-forming eruptions. Volcaniclastic turbidites from the Madeira Abyssal Plain recorded at site D11814 (location on Fig. 1). Biostratigraphic and photospectral data from Hunt et al.7. Timing of caldera-forming eruptions from Marti et al.35. Further information regarding the timing of landslides and caldera eruptions and the nature of the deposits are documented in supplement 1.


Previous studies postulate that caldera-forming and similar explosive eruptions may cause ground accelerations that trigger flank collapse33,34. For example, the 2002 explosive eruption of Stromboli Volcano caused a sequence of subsequent tsunamigenic landslides36. The involvement of caldera-forming eruptions on ocean islands influencing flank collapse is postulated with the specific reference to the formation of the Icod and Orotava Valleys on Tenerife31,32,33,34. However, preliminary evidence from distal marine deposits of the Icod landslide (165 ka) on Northern Tenerife and terrestrial deposits from the resulting landslide-tsunamis suggest that initial stages of multistage submarine flank failure were succeeded by the Abrigo caldera-forming eruption12,37. Here, we investigate this relationship between volcanic island landslides and large explosive, often caldera-forming, Plinian eruptions. We wish to understand whether landslides and eruptions are linked, and if so, which comes first. Past work has shown that large-volume volcanic island collapse can occur in multiple distinct stages or sub-units12,38. Therefore we also wish to understand whether particular stages of failure are associated with the eruptions and test previous hypotheses regarding the influence of ocean island flank collapses towards changing magma chamber pressure regimes at depth39.

Our study examines distal marine deposits, called turbidites, from the multistage Icod, Orotava and Roques de Garcia flank collapses on Northern Tenerife. The ages of these deposits coincide with the timing of Abrigo and Granadilla eruptions that generated the Diego Hernandez and Guajara calderas, respectively, and ignimbrite eruptions that created the Ucanca caldera (Fig. 2; Supplementary 1)7,12,27,29,30,31,40,41,42,43,44. We compare chemical compositions of volcanic glass from multiple turbidite layers (sub-units) of these individual slides deposited in the basins adjacent to the Western Canary Islands. These data represent newly analysed volcanic glasses and those collated from past studies12,38. We also analyse volcanic glasses from the coeval Abrigo and Granadilla eruptions recovered from terrestrial exposures near the town of Tajao, Southern Tenerife. We also collate previous analyses of volcanic glasses from a tephra recovered in ODP Core 953 dated to ~1.0 Ma synonymous with the caldera-eruptions at the end of the Ucanca Formation45,46. Comparison of compositions of volcanic glasses from the landslides and eruptions provides a uniquely detailed investigation of the landslide dynamics and their relationships with island volcanism (Supplementary 1, 2)6,7,38.

Tenerife`s flank collapses and their relationship to caldera eruptions
The Las Cañadas volcanic edifice on Tenerife has a history punctuated by both effusive lava flows and explosive eruptions of phonolitic ignimbrites31,47. Indeed, recent volcanism has occurred within three cycles, each culminating in a caldera-forming eruption, these include the most recent Abrigo (160â€"185 ka) at the end of the Diego Hernandez Cycle, Granadilla (560â€"600 ka) ignimbrites at the end of the Guajara Cycle, and a series of ignimbrites (1.0â€"1.2 Ma) at the end of the Ucanca Cycle (Supplementary 1â€"2)31,40,41,42,47. The northern flank of Tenerife is sculpted by the voluminous multistage Icod (165 ± 5 ka), Orotava (535 ± 5 ka) and Roques de Garcia (1.15 ± 0.01 Ma) landslides, which broadly coincide with the age of the Abrigo, Granadilla and terminal Ucanca caldera-forming eruptions (Fig. 2; Supplementary 1)6,7,12,39, suggesting that the collapses and eruptions are likely linked7,12,29,30,37; although the nature of that link remained unresolved with certainty.

Turbidites were deposited beneath dilute turbulent sediment flows formed as the slide mass moved downslope under gravity and disaggregated7,8,12,38. Canary Island landslide deposits in adjacent deep sea basins, such as those of the Icod, Oratava and Roques de Garcia landslides, are unusual as they comprise a series of stacked graded turbidite sand and mud intervals, called sub-units (Fig. 3)12,38,48,49. These sub-units are compositionally distinct and record landslide emplacement into the ocean in a series of retrogressive stages12,38,49. In these distal deep-sea environments over 500 km from the islands, each turbidite sub-unit is often separated by a 5â€"75 cm layer of clay and fine silt. These fine-grained intervening sediments settled relatively slowly from the waning turbidity current, potentially reflecting substantial time lags (representing at least tens to hundreds of hours) between individual successive sub-unit failures (Fig. 3)12. The initial sub-unit(s) within the distal landslide deposits are thicker and contain marine bioclastic sediment and altered volcaniclastics in contrast to later sub-units12,38,49. This suggests that the initial stage(s) of each landslide comprised most of the failure volume, and were sourced from submerged parts of the volcanic island12,38. Later sub-units are smaller-volume and are composed almost entirely of unaltered volcanic glass from the flanks of the active subaerial edifice12,38,49, implicating progressive sub-unit failures migrated retrogressively from the submerged to the entirely subaerial flanks of the volcano12,38,49.

https://www.nature.com/articles/s41598-018-19285-2

jand

Last night a 1.7 earthquake at a shallow depth of 6km Tenerife.

1.7 mbLg  S REALEJO ALTO.ITF  2018/01/21 20:31:16  6  +info

Report courtesy of Enrique.

''earthquake in the alto, Tenerife, Canary Islands.- 21/01/2018.-a few minutes ago a 1.7 6-mile earthquake was located under the escarpment of the valley. It is fully appreciated in Maci, the vertical sign of the right in which the whole day comes out. It's not the schedule yet.''

Es2018aognp 21/01/2018 20:31:16 20:31:16 28.3382-16.5886 6.3 km m 1.7 mblg s realejo high. Itf

http://www.ign.es/web/ign/portal/ultimos-terremotos/-/ultimos-terremotos/getDetails?evid=es2018aognp&zona=1

www.ign.es/web/resources/volcanologia/tproximos/canarias.html

jand

IGN have started to update the list for the last couple of days.

2.7 mbLg ATLÁNTICO-CANARIAS   2018/01/21 08:35:58   +info

2.0 mbLg   ATLÁNTICO-CANARIAS   2018/01/21 04:37:22  29  +info

1.9 mbLg   NW FASNIA.ITF   2018/01/21 01:17:38   15  +info

1.7 mbLg   E LA OROTAVA.ITF   2018/01/20 17:36:46  21  +info

1.0 mbLg   ATLÁNTICO-CANARIAS   2018/01/19 01:27:38  +info

http://www.ign.es/web/resources/volcanologia/tproximos/canarias.html

jand

#4763
This evening a new shallow earthquake at only 3km depth.

1.9 mbLg   ATLÁNTICO-CANARIAS   2018/01/23 17:14:59  3   +info

1.5 mbLg   SE FASNIA.ITF   2018/01/23 07:12:04   16   +info

1.1 mbLg    NE GUÍA DE ISORA.ITF   2018/01/23 03:55:15  13   +info

1.4 mbLg   S LOS SILOS.ITF   2018/01/23 00:31:31   14   +info

2.6 mbLg   ATLÁNTICO-CANARIAS   2018/01/22 20:08:54  11   +info

http://www.ign.es/web/resources/volcanologia/tproximos/canarias.html

jand

A 2.1 earthquake this morning on the Northern edge of the crater Teide.

2.1 mbLg   SE LA GUANCHA.ITF   2018/01/27 10:01:21   10   +info

http://www.ign.es/web/resources/sismologia/www/dir_images_terremotos/detalle/es2018bcehd.gif

1.8 mbLg   ATLÁNTICO-CANARIAS   2018/01/26 21:10:52   29   +info

.8 mbLg    SE ARICO.ITF    2018/01/25 02:50:00   2   +info

1.5 mbLg    ATLÁNTICO-CANARIAS   2018/01/24 00:27:10   20   +info

http://www.ign.es/web/resources/volcanologia/tproximos/canarias.html

jand

Activity back to El Hierro.

2.3 mbLg   SW FRONTERA.IHI    2018/01/29 19:57:28    15   +info

2.0 mbLg   SW FRONTERA.IHI   2018/01/29 19:56:58  12  +info

1.9 mbLg   SW EL PINAR.IHI   2018/01/27 14:36:43   +info

http://www.ign.es/web/resources/volcanologia/tproximos/canarias.html

jand

Involcan on their Facebook page  have reported that ITER have reported an increase in carbon dioxide emissions El Hierro.

El INVOLCAN registra un cambio de tendencia en la emisión difusa de CO2 por el edificio volcánico insular de El Hierro

Translated

..The involcan records a change of trend in the diffuse co2 emission by the insular volcanic building

Since Mid-January there has been a slight upward trend in carbon dioxide emissions reached 904 ± 30 tonnes per day

Scientists from the institute of technology and renewable energy (Iter), an agency dependent on the insular cabildo of Tenerife, and currently being part of the institute of the Canary Islands (Involcan) have communicated to the directorate of the special plan for civil protection for the volcanic risk of the Autonomous community of the Canary Islands (Pevolca), which is experiencing a change of trend in the diffuse emission of carbon dioxide (Co2) into the atmosphere by the iron island volcanic building during the second half of January, reaching 904 ± 30 tonnes per day at the end of January. This trend change is observed after a downward trend of the diffuse emission of carbon dioxide (Co2) into the atmosphere by the iron island volcanic building since late November, when it reached 2.398 ± 115 Tonnes per day, until mid-January, when it entered an emission rate of 661 ± 37 tonnes per day. To point out that these values do not relate to the emission of carbon dioxide (Co2) which occurs through the submarine eruption of iron, but to the amount of carbon dioxide (Co2) emitted into the atmosphere through the environment Surface (Floor-Air Interface) which makes up 278 km2 of area of the Meridian Island.

In order to obtain these results, scientific campaigns are carried out, involving hundreds of diffuse carbon dioxide (Co2) measures carried out on the entire surface of the iron island, with the aim of investigating the spatial-temporal variations of the Diffuse emission of carbon dioxide (Co2) into the atmosphere by the iron island volcanic building. The interest and importance of these work on diffuse carbon dioxide (Co2) emission for volcanic surveillance is due to the fact that the information generated through these scientific campaigns cannot be obtained through permanent instrumental networks.

Other scientific reasons supporting the interest of these monitoring work are the role of gases as a driving force for volcanic eruptions, that carbon dioxide (Co2) is the second largest component of volcanic gases, after water vapour , and that the low solubility of carbon dioxide (Co2) in molten melted (magma) favours the escape of carbon dioxide (Co2) with the very ease of volcanic systems in depth.

These scientific campaigns have been able to materialize thanks to the project " strengthening the capacity of i+d+i+d to contribute to the reduction of volcanic risk in the (Mac / 3 / c161)" which is co-financed by the transnational cooperation programme of The European Union Madeira - Canary Islands - Azores (Mac 2007-2013) and the cooperation of the islands of Tenerife and iron.

Involcan is an institution unanimously demanded by the Senate (2005), Parliament of the Canary Islands (2006) and Congress of members (2009) with the aim of contributing to the improvement and optimization of volcanic risk management in Spain .''


jand

www.ign.es/web/ign/portal/vlc-senales-sismicas/-/senales-sismicas/getInfoHora?fecha=2018-01-29&tipo=2&estacion=CHIE&hora=19-20


The comments made by Enrique regarding the above graph CTIG station.

Translated.

..And while in the public access spectrogram of El Hierro, CTIG; is very lightly appreciated ... almost mission impossible to find anything and that they have been close to the sensor and remarkable magnitude ... but .. this is what they offer us, what there must be elsewhere, not here. I guess CHIE was more interesting than CTIG, but you know, you can not be alarmed, but you get the opposite. Let's see when they change the chip. (Enrique). ''

jand

IGN have added another earthquake for El Hierro yesterday a 1.7.

The 2.3 was directly on the crater rim of the Volcano Tanganasoga.

http://www.ign.es/web/resources/sismologia/www/dir_images_terremotos/detalle/es2018bdpcm.gif

2.3 mbLg   SW FRONTERA.IHI    2018/01/29 19:57:28    15   +info

2.0 mbLg   SW FRONTERA.IHI   2018/01/29 19:56:58  12  +info

1.7 M(mb)   NW FRONTERA.IHI   2018/01/29 08:55:35  +info

jand

#4769
Latest post courtesy of Enrique who has asked at the end if  someone if possible could explain what is actually happening to the data.

The English translation is on the next page (160)

''SISMICIDAD EN TENERIFE Y EL HIERRO EN LOS ÚLTIMOS DÍAS, CANARIAS.- Hoy de momento se ha localizado un microterremoto de magnitud 0.8 en la zona este de Izaña en Fasnia a una profundidad de 3.6 km.

es2018bedin 30/01/2018 05:26:49 05:26:49 28.3010 -16.4826 3.6 km M 0.8 mbLg W GÜÍMAR.ITF

Además se observan algunas señales de pequeños sismos no localizados por el IGN en el sismograma de MACI a las 02:35h, 03:02h, 06;47h, 10:28h, 11:42h y 12:36h, ademas de ruidos por viento, olas y antrópico apreciable en varios momentos y que esperemos que al menos repesquen alguno en próximos días. Por cierto, la señal lisa del espectrograma de las 05:15h es un parásito o error en la señal.

Además en la revisión de sismos en el Hierro que tuvimos ayer han repescado uno muy especial, con lo cual son finalmente tres los que tuvimos ayer, aunque en el sismograma no se ve apenas nada. Por cierto que si además consideramos el sismo de hace tres días, esto 4 sismos conforma una estrella mercedes perfecta con un centro de mayor magnitud y los menores alrededor a 120º, blanco y en botella. El edificio del Hierro está sometido a esfuerzos que vienen desde abajo hacia arriba y responde sismicamente de esa forma.

es2018bdkbf 29/01/2018 08:55:35 08:55:35 27.9864 -18.2848 0.0 km M 1.7 M(mb) NW FRONTERA.IHI - nuevo

es2018bdpcl 29/01/2018 19:56:58 19:56:58 27.7374 -18.0344 12.0 km M 2.0 mbLg SW FRONTERA.IHI
es2018bdpcm 29/01/2018 19:57:28 19:57:28 27.7257 -18.0642 15.0 km M 2.3 mbLg SW FRONTERA.IHI

El motivo por el que este sismo es muy especial son los datos que se aprecian en las fases, ya que la magnitud que pone en las mismas no es la misma que aparece en otros archivos de fases, con dos datos posibles, con lo que queda una duda razonable, fue un 1.7 o un 2.7.

Esto es lo que pone el archivo de fases del evento nuevo de 1.7 codificado como: es2018bdkbf:
Magnitude Err Nsta Author OrigID
M_mb 1.7 0.4 3 IGN 018bdkbf
(M_mb stands for Mw(mb(V-C)))
mb_VC 2.7 0.2 3 IGN 018bdkbf
(mb_VC stands for mb(V-C))

http://www.ign.es/…/dir_images_t…/fases/2018/es2018bdkbf.dat

En cambio si miramos el 2.3 localizado ayer codificado como es2018bdpcm tenemos esto:

Magnitude Err Nsta Author OrigID
mb_Lg 2.3 0.3 5 IGN 018bdpcm
(#PRIME)
http://www.ign.es/…/dir_images_t…/fases/2018/es2018bdpcm.dat

¿¿¿ Como se quedan ??? yo sin ninguna explicación de momento, me gustaría que alguien me explicase que es lo que pasa aquí para cambiar la forma de medir la magnitud de los sismos de forma aleatoria y ¿por que?. (Enrique)

Translated.

049 seismicity in Tenerife and el hierro in the last few days, the Canary Islands.- today a microterremoto of magnitude 0.8 has been located in the east area of izaña in fasnia at a depth of 3.6 km.

Es2018bedin 30/01/2018 05:26:49 05:26:49 28.3010-16.4826 3.6 km m 0.8 mblg w güímar. Itf

There are also some signs of small earthquakes not located by the ign in the seismogram of Maci at 02:35 H, 03:02 H, 06;47 h, 10:28 H, 11:42 h and 12:36 H, In addition to noise by wind, waves and anthropic at various times, and hopefully at least we will have some in the next few days. By the way, the Lisa signal from the 05:15 h is a parasite or error in the signal.

In addition to the earthquake review in the iron we had yesterday they have up a very special one, which is finally three of the ones we had yesterday, although in the seismogram you can hardly see anything. By the way, if we also consider the earthquake three days ago, this 4 earthquakes form a perfect Mercedes star with a larger center and the minors around 120º, white and in bottle. The Iron building is subject to efforts that come from the bottom up and responds sismicamente that way.

Es2018bdkbf 29/01/2018 08:55:35 08:55:35 27.9864-18.2848 0.0 km m 1.7 M (MB) nw border. Ihi - new

Es2018bdpcl 29/01/2018 19:56:58 19:56:58 27.7374-18.0344 12.0 km m 2.0 mblg sw border. Ihi
Es2018bdpcm 29/01/2018 19:57:28 19:57:28 27.7257-18.0642 15.0 km m 2.3 mblg sw border. Ihi

The reason why this quake is very special is the data that are shown in the phases, because the magnitude it puts in the phases is not the same as it appears in other phases, with two possible data, with what is left A reasonable doubt, it was a 1.7 or a 2.7.

This is what the new 1.7-encoded event file sets as: Es2018bdkbf:
Magnitude Err Nsta Author OrigID
M _ MB 1.7 0.4 IGN 018 bdkbf
(M_mb stands for Mw(mb(V-C)))
MB _ U 2.7 0.2 3 IGN 018 bdkbf
(MB _ u stands for mb)
http://www.ign.es/web/resources/sismologia/www/dir_images_terremotos/fases/2018/es2018bdkbf.dat

Instead if we look at the 2.3 located yesterday encoded as es2018bdpcm we have this:

Magnitude Err Nsta Author OrigID
MB _ LG 2.3 0.3 5 IGN 018 bdpcm
(#PRIME)
http://www.ign.es/web/resources/sismologia/www/dir_images_terremotos/fases/2018/es2018bdpcm.dat

As you stay??? I without any explanation for the moment, I would like someone to explain to me what's going on here to change the way of measuring the magnitude of earthquakes at random and why?. (Enrique)

https://scontent-lhr3-1.xx.fbcdn.net/v/t1.0-9/27336441_485886998475939_5061888029434782936_n.png?oh=731c0df4cafb1111ba71c721f983d010&oe=5AE5726B

https://scontent-lhr3-1.xx.fbcdn.net/v/t1.0-9/27336875_485886701809302_7219224969850414630_n.jpg?oh=aebf85e0b669e8d8c0be87676e995ceb&oe=5B1E32AB