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El Hierro

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

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jand

#3480
February 01, 2013, 19:24:46 PM
There is some discussion  on the Avcan Facebook page that the EQ yesterday was more than a 2.9 mag.

Translated .

The truth is that you seeing the comments where and as it has been felt this earthquake, and especially seeing the analysis of signals which has left this earthquake in all sensors except the Lanzarote Canary Islands but marked up in the Fuerteventura, makes the calculated magnitude is left very small based on these two factors.Then the fact that it appears only calculated with a station in the file of phases, in the station of CTIG, is very rare, and the other stations do not have suddenly? rare rare. I guess that it will be reviewed today or these next days, already such signal is what would leave something more large, as an earthquake of 3.4-3.6 at that depth, range that is could increase range if we vary the depth between a 3.3 - magnitude 3.7. That correspond more with what has been felt in all the island of el Hierro. According to comments made on this Facebook of avcan, - some published before leaving the value of earthquake by the IGN-...

It has been felt  in:- Frontera -Las Toscas-Sabinosa-La Tabla

And here is the official information of as it has been felt.

RATIO OF INTENSITIES (EMS) AND POPULATIONSTHIS EARTHQUAKE HAS BEEN FELT IN WHICH:II GULF (THE) BORDER.TFII TIGADAY,
BORDER.TF

http://www.ign.es/ign/resources/sismologia/www/dir_images_terremotos/detalle/1188033.gif

With this message I would like to reiterate the importance of complete and return questionnaires of earthquake sense the direction of the IGN when these phenomena occur and are located in the following list:

http://www.02.ign.es/ign/layoutIn/geofisicaCuesmaCuesmaTerremotos.do

jand

#3481
February 01, 2013, 19:30:41 PM
Another possible EQ not showing on IGN?

Translated.

If not located nor which brought us trompe-l'oeil Quilis, the issue already is quite worrisome.

http://www.02.ign.es/ign/resources/volcanologia/DATOS/2013/CHIE/imagenes_sismica/HORA/CHIE_2013-02-01_02-03.jpg

I think that they are relaxing too with the monitoring of the process and does not surprise me anything that could be a surprise. The luck is not always eternal. It would not be bad to, at least, maintain the instrumentation installed in the course of the crisis.

jand

#3482
February 01, 2013, 19:34:04 PM
Recent comment from Joke Volta:

..ahora son casi las siete de la tarde, y aún no he visto una información de parte del IGN sobre la señal nombrado en pestañas anteriores entre las 2-3 UTC hoy.Sin exagerar se puede decir que tenemos un servicio de vigilancia lenta.Espera que el IGN actualiza, porque si no, uno de los consecuencias es, que va perdiendo credibilidad por parte de población, cosa que puede afectar negativamente su labor de vigilancia,y esto puede quizás también afectar a cosas de seguridad para la población

.Preocupante.....they are now almost seven in the evening, and I have not yet seen an information from the IGN on the signal named in previous tabs between 2-3 UTC today.Without exaggeration it can be said that we have a slow security service.Expected that the IGN update, because if not, one of the consequences is, it loses credibility by population, which can negatively affect their monitoring work, and this can perhaps also affect things of safety for the population.Worrying...

jand

#3484
February 05, 2013, 13:40:46 PM
Very Interesting.

Translated.

Involcan Researchers Show There Were Two Underwater Erruptions In El Hierro.

scientific team of the Instituto Vulcanológico de Canarias (Involcan) confirms an second submarine in El Hierro eruption in 2012. This eruption took place in the area of El Julan. A rash which was not detected even though there were moments that earthquakes and some other data pointed out that this could have happened. This eruption took place in July 2012 at the same time that was producing and monitoring the eruption of La Restinga.

The results were presented this morning in the Cabildo of Tenerife by several members of Involcan such as the director of this Center, Nemesio Pérez; at the Complutense University of Madrid Luis González Vallejo geologist and volcanologist from Involcan, Pedro Hernández.

In this sense, Vallejo stressed during the press conference that these data have to reflect on surveillance volcanological on the island since the phenomenon went largely unnoticed at the time, although he also made clear that it was an event without the slightest involvement for the population, and that that took place in La Restinga.

Nemesio Pérez pointed out that these data come to put on the table the magmatic complex model of the island of El Hierro.


http://www.daciencia.com/2013/02/05/investigadores-de-involcan-demuestran-que-hubo-dos-erupciones-submarinas-en-el-hierro/?utm_source=twitterfeed&utm_medium=facebook

jand

#3485
February 05, 2013, 13:45:34 PM

Translated.

The volcanic Canary Islands Institute (Involcan) reveals that in June 2012 a new underwater volcanic activity occurred in the area of Orchilla, El Hierro.

In a press conference, in Tenerife, the Involcan reported that in this eurpcion feathers up to 50 meters in height were generated.

Confirmation of this new underwater volcanic activity emerges from the works marine geophysical research carried out by researchers of the geographical Institute and the hydrographic Institute of the Merina (IHHM), mining of Spain (IGME) aboard the research vessel Hespérides and scientific collaboration between researchers from these two agencies and the Involcan.

The ship Hespérides recorded June 27, 2012 to plumes of emission of volcanic material to less than two miles off the coast of El Hierro oste, between the Lomo Negro volcano and the Faro de Orchilla, at depths of between 64 and 88 meters. These plumes were registered through acuisticas images and came to reach 48 meters.

Coordinator of the Involcan, Nemesio Pérez, said that his group had knowledge of the existence of these images acuisticas about a month ago, but that the geographical National Institute (IGN), organization responsible for volcanic surveillance in Spain, it learned of its existence the same day they were recorded, the 27 of June 2012, but not communicated it to the Plan of Civil protection by volcanic hazard (Pevolca)that at that time he met several times because the seismic crisis that occurred between rl on June 25 and July 9.

http://www.canarias7.es/articulo.cfm?id=291500

jand

#3486
February 05, 2013, 14:09:45 PM
Translated.

Apart from scientific data, the press conference returned to leave out the existing problem between the different bodies involved in the monitoring and control of the volcanism in the Canary Islands. Both González Vallejo and Nemesio Pérez claimed that the IGN - EU is the body which legally has control and volcanic surveillance in the Canary Islands - and which is the linchpin of the Pevolca (where are involved all the authorities and Civil Protection) "met the same day, via email, the existence of these five plumes of gaseous and solid material" that found the ship Hespérides. To the question of why they did not public or rejected it? researchers refer to the IGN. "We have to ask them."

Nemesio Pérez remarked that the eruption (although technically do not want it to call it that but issuance of magmatic material) he had no great importance for the security of the population but "confirms that the magmatic building herrero is more complex than previously thought and instead of form with bags autonomous of lava has a Trident shape". Thus, these data could confirm that the approach of the scientific research in the iron should be reviewed.

Vallejo insisted that it is essential that "there is greater scientific coordination among the institutions involved in this matter because without it, we are lost".

Tufts and acoustic images

The plumes that have become the linchpin to say that there was a second eruption - denied at the time by scientists of the Pevolca - June 27, 2012 "were recorded through acoustic images that have identified the existence of volcanic material emitted from the seabed and to form Tufts which reached 48 meters of height".

The researchers also explained that Tufts (of which it had knowledge a few months ago) were accompanied by a series of warning signs as it is the case that Involcan HIE02 geochemistry station in the West of the island recorded an increase of the activity of the gas radon from the end of April at the beginning of June 2012 reaching values peak 10 times higher than considered normal for this season.

In addition, also noted in the documentation delivered in the press conference that "follow-up and measure the isotopic ratios 3He /4I have in helium dissolved in groundwater from the well San Simón, located in the eastern part of the island, accused the highest level of emission of helio-3 registered since the beginning of the magmatic reactivation of iron".

In addition to these precursor geochemical signals, Involcan announces that at that moment, "increase very accused of the seismic energy released and number of earthquakes of magnitude greater than 2.5 on June 25, 2012".

At the same time, the stations of the network GPS Canaria (Nagoya-Grafcan Involcan-University) measured very significant displacement both vertical and horizontal, accusing elevations from the ground about 3 inches during the first two days of the sismico-deformacional crisis from June 25 to July 9, 2012. To this is added the photographs taken by the Civil Guard helicopter in those days is detected where a patch similar to that produced in La Restinga in the early days of the eruption, although at that time it was credited to swell.

With all this data, Involcan scientists assert that there was this second submarine eruption in El Hierro. That Yes, insist to give absolute certainty is essential to a "dredging of the area" because these data, although conclusive for them, are indirect.


A new scientific controversy opens with respect to surveillance volcanological of El Hierro. Will there be consequences?

http://www.daciencia.com/2013/02/05/investigadores-de-involcan-demuestran-que-hubo-dos-erupciones-submarinas-en-el-hierro/

jand

#3487
February 05, 2013, 14:49:31 PM
2013-02-05 11:58 UTC
- Only few earthquakes, but something is currently starting, however we do not know whether it will continue the following hours. A lot of micro-seismicity since a couple of hours. (Thanks to our readers Tam and Leona who have been informing us of what was happening)

www.earthquake-report.com

http://www.02.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=CHIE_2013-02-05&estacion=CHIE&Anio=2013&Mes=02&Dia=05

jand

#3488
February 05, 2013, 15:48:51 PM
OT looks like another swarm in Mainland Spain.

2013-02-05 15:18:35.814min ago 38.06 N 3.27 W 5 3.0 SPAIN
http://www.emsc-csem.org/Earthquake/earthquake.php?id=303537

05/02/2013 15:18:35 38.0600 -3.2700 5 3.0 4 NE TORREPEROGIL.J
http://www.02.ign.es/ign/layoutIn/sismoDetalleTerremotos.do?evid=ign2013cnbv&zona=1
05/02/2013 14:25:09 38.0595 -3.2875 2.6 mbLg SE SABIOTE.J


  • 1189067 05/02/2013 14:23:41 38.0566 -3.3026 2.8 mbLg S SABIOTE.J

  • 1189061 05/02/2013 14:22:13 38.0539 -3.2671 1.8 mbLg NE TORREPEROGIL.J

  • 1189050 05/02/2013 13:43:42 38.0604 -3.2668 2.3 mbLg NE TORREPEROGIL.J

  • 1189022 05/02/2013 13:33:11 38.0513 -3.2802 2.1 mbLg NE TORREPEROGIL.J

  • 1189003 05/02/2013 12:30:26 38.0409 -3.2907 3 1.5 mbLg NW TORREPEROGIL.J

  • 1188986 05/02/2013 11:36:09 38.0447 -3.2900 2 1.8 mbLg NW TORREPEROGIL.J

  • 1188978 05/02/2013 10:59:33 38.0489 -3.2805 2 2.0 mbLg NE TORREPEROGIL.J

  • 1188966 05/02/2013 10:26:15 38.0456 -3.2890 2 Sentido 1.8 mbLg NW TORREPEROGIL.J

  • 1188962 05/02/2013 10:13:54 38.0503 -3.2824 1 Sentido 2.3 mbLg N TORREPEROGIL.J

  • 1188942 05/02/2013 09:41:12 38.0404 -3.2905 3 Sentido 2.6 mbLg NW TORREPEROGIL.J

  • 1188941 05/02/2013 09:40:31 38.0447 -3.2859 3 Sentido 2.0 mbLg N TORREPEROGIL.J

  • 1188928 05/02/2013 09:21:57 38.0442 -3.2811 3 1.7 mbLg NE TORREPEROGIL.J

  • 1188924 05/02/2013 09:02:55 38.0519 -3.2813 1 1.7 mbLg N TORREPEROGIL.J

  • 1188965 05/02/2013 08:52:15 38.0508 -3.2807 1 Sentido 2.5 mbLg NE TORREPEROGIL.J

  • 1188954 05/02/2013 08:51:05 38.0557 -3.2780 Sentido 2.2 mbLg NE TORREPEROGIL.J

  • 1188895 05/02/2013 08:50:32 38.0508 -3.2817 1 Sentido 2.6 mbLg N TORREPEROGIL.J

  • 1188879 05/02/2013 08:09:55 38.2922 -6.4488 1 2.2 mbLg NE VALENCIA DEL VENTOSO.BA

  • 1188923 05/02/2013 08:07:01 38.0289 -3.2982 3 1.7 mbLg SW TORREPEROGIL.J

  • 1188866 05/02/2013 08:06:15 38.0432 -3.2983 4 III 2.7 mbLg NW TORREPEROGIL.J

  • 1188857 05/02/2013 07:27:06 38.0451 -3.2888 2 1.9 mbLg NW TORREPEROGIL.J

  • 1188885 05/02/2013 07:12:06 38.0538 -3.2784 2.1 mbLg NE TORREPEROGIL.J

  • 1188847 05/02/2013 07:11:23 38.0519 -3.2774 2.2 mbLg NE TORREPEROGIL.J

  • 1188828 05/02/2013 06:30:42 38.0412 -3.2943 3 Sentido 1.9 mbLg NW TORREPEROGIL.J

  • 1188803 05/02/2013 06:00:10 38.0509 -3.2792 2.0 mbLg NE TORREPEROGIL.J

  • 1188792 05/02/2013 05:07:49 37.8524 -1.7590 11 2.0 mbLg NW ALEDO.MU

  • 1188776 05/02/2013 04:30:38 38.0524 -3.2784 1.6 mbLg NE TORREPEROGIL.J

  • 1188754 05/02/2013 03:07:11 38.0540 -3.2782 1.8 mbLg NE TORREPEROGIL.J

  • 1188720 05/02/2013 02:59:54 38.0589 -3.2842 1.5 mbLg SE SABIOTE.J

  • 1188711 05/02/2013 02:54:08 38.0553 -3.2755 1.8 mbLg NE TORREPEROGIL.J

  • http://www.02.ign.es/ign/layoutIn/sismoListadoTerremotos.do?zona=1&cantidad_dias=10

jand

#3490
February 07, 2013, 19:56:15 PM
The volcanic system of the iron continues to theirs its seismic activity occasionally reminding with its enjambritos earthquake-volcanic following there, the latter recently less than an hour. Located earthquakes are 2 for the time being in the right centre of the island to about 11 - 12 km (Enrique from Kuwait):

1190407 07/02/2013 18:19:33 27.7319 - 18.0319 12 km 1.6 4 SW border.IHI
1190405 07/02/2013 18:28:27 27.7317 - 18.0233 11 km 1.9 4 SW border.IHI

http://www.01.ign.es/ign/resources/volcanologia/DATOS/2013/CHIE/imagenes_sismica/HORA_SP/CHIE_2013-02-07_18-19_sp.jpg (Translated by Bing)

jand

#3492
February 09, 2013, 19:47:55 PM
1190991 09/02/2013 18:35:24 28.4288 -15.3239 36   2.8  4  ATLANTICO-CANARIAS

jand

#3493
February 10, 2013, 15:35:58 PM

Translated.


,,Also yesterday at 8:13 pm again a ML1, 7 quake at a depth of 14 km in Los Llanillos in the Golfotal. It will not just stop, even if on the island surface of all the processes in the subsurface is nothing to feel. For more than 18 months, the volcanic activity persists now. Meanwhile, some is record-breaking.So there were since the 19.Juli 2011 today 16.718 quake. I did not know where at least on the Canary Islands, in the past, so many earthquakes were counted in 1.5 years. Previously the seismographs and measuring devices were not so perfected safely. Today, even the weakest tremor registered and its location very precisely localized.On the IGN map (left) all earthquakes are graphically represented. The concentration of quakes can be about the size of the magma chamber. So whose diameter is about 15 km with Centre in the Interior of the island under the volcano mountain Tanganasoga / Malpaso. The depth of the main Chamber at 20 km. Hot magma has the ability to ascend. Meanwhile a bubble has formed (blue) ranges up to 6 km below the Earth's surface up. This is in the area around Sabinosa/Pozo de la Salud in the Golfotal.Because here the overlying rock layers are probably difficult to penetrate and to melt, the pressure will escape sideways. The Eldiscreto eruption in the South and the now newly discovered holes on the West side suggest.How it goes now?? -It is only the accurate observation. Everything else is speculation. The ground deformation stops. The internal pressure has not significantly reduced himself. There are no new results to the gas emissions.,,

http://elhierro1.blogspot.de/

jand

#3494
February 11, 2013, 06:21:18 AM
Another EQ a 1.7 mg between the east coast of Gran Canaria and the west coast of Fuerteventura.

1191205 10/02/2013 22:23:02 27.9557 -14.9719 20 1.7 4 ATLÁNTICO-CANARIAS


http://www.avcan.org/?m=Mapas&a=mapa&mf=209

jand

#3495
February 17, 2013, 09:27:50 AM
Translated

El Hierro. Two slight earthquakes yesterday at 18.21 clock with ML1, 5 (blue), depth could not be determined, far out in front of the Gulf. To 18.42 clock with another ML1, 4 (pink) in 16 km depth at the south western tip. Are both the edge regions of the presumed magma main chamber. As the bottom of the sheet will see the geologists the incoming readings of the individual seismograph stations. From the individual data the strength of the quake, according to the exact location coordinates and the depth is calculated. All the information via satellite transmission to Madrid in the central location of the center of the IGN. On the long contact method may you may also go that technical faults or meteorological influences data falsified information or completely lost. But rashes (quake) the seismogram on the recognize are locally but not actually present, were to be filtered out. Only a geologist or seismologist, despite all the technology, identify and correct these disturbances the records accordingly, before the data is published online.

http://elhierro1.blogspot.de/






jand

#3496
February 17, 2013, 09:30:22 AM
And also 2 SISMITOS yesterday located close to the island of El Hierro, one of magnitude 1.4 enough northward without depth and another 1.5 to the southwest of the island in the sea of the calm to the South of the lighthouse of Orchilla. Map of the last 10 earthquakes in AutoUpdate iron, note that these last 2 earthquakes, have not been in the area where we had the last enjambritos in the center of the island of El Hierro. (Enrique from kuwait)

1192116 15/02/2013 18:42:31 27.6603 - 18.1280 16.3km 1.4 SW EL PINAR.IHI - iron

1192115 15/02/2013 18:21:06 27.8805 - 18.0873-.-1.5 km NW frontier.IHI - iron

http://www.avcan.org/index.php?m=Mapas&a=mapa&mf=860

jand

#3497
February 18, 2013, 20:50:17 PM
2.7 Sense in the iron makes about 50 MIN approximately 22 km of depth in the mar de las Calmas SW, s of the lighthouse of Orchilla earthquake.

1192851 18/02/2013 16:39:58 27.6613 - 18.0970 22 S 2.7 4 SW EL PINAR.IHI

http://www.01.ign.es/ign/head/volcaSenalesDiasAnterioresHora.do?nombreFichero=CHIE

_2013-02-18_16-17&estacion=CHIE&Anio=2013&Mes=02&Dia=18&tipo=1&hora=16-17

jand

#3498
February 18, 2013, 20:52:39 PM Last Edit: February 18, 2013, 21:01:53 PM by jand

jand

#3499
February 18, 2013, 20:56:14 PM
http://www.ign.es/ign/resources/sismologia/www/dir_images_terremotos/detalle/1192851.gif

Fases => 3.5 en CTAB, 2.2 en CHIE y 2.5 en CTIG

CTAB 0.09 6.9 S 16:40:04.553 -0.2 T__ 7.9 2038.9 0.14 a__ mbLg 3.5 20879345

CHIE 0.14 61.5 S 16:40:05.227 -0.2 T__ 7.9 134.1 0.20 a__ mbLg 2.2 20879337

CTIG 0.20 50.8 S 16:40:06.622 -0.1 T__ 7.9 77.0 0.06 a__ mbLg 2.5 20879342

jand

#3501
February 18, 2013, 21:11:02 PM
Several small quakes in the last 24 hours. Today at 2.03 clock morning ML1, 4 km in 23 depth below Tanganasoga. What the stronger blue rash on the seismogram at  4.12 clock was was not listed by the IGN. It was a local event, and was also recognized by the immediate neighboring stations La Gomera and La Palma. Maybe a landslide, as the shock shows no quake typical course Let's wait until the time from IGN has extended its statistics.

http://elhierro1.blogspot.de/

jand

#3502
February 25, 2013, 18:21:58 PM Last Edit: February 25, 2013, 18:26:29 PM by jand
The strongest earthquake for quite a while this actually was on the west coast off Lanzarote.


Magnitude  mb 3.4  Region  CANARY ISLANDS, SPAIN REGION   Date time  2013-02-25 15:26:26.5 UTC



Location  29.33 N ; 14.37 W  Depth  37 km

http://www.01.ign.es/ign/none/geofisicaPopupDetalleTerremotosVolca.do?mapa=1193998
 

jand

#3503
February 25, 2013, 20:04:45 PM Last Edit: February 25, 2013, 20:09:44 PM by jand
Good news for the islanders of El Hierro.

,,March 2013 an anchorage will be installed in the vicinity of the submarine volcano in El Hierro. Data that are recorded will be transmitted to Earth in the present tense and can visit continuously at this section of the website.,,

http://www.vulcanoelhierro.es/node/76

Personal Comment from a Spanish person :

Translated

It was time to investigate not only the dissolved gases in the atmosphere. A new door is opened preventive research, through the study of gases dissolved in the sea surrounding volcanic islands, whose emerged surface is only tip of Iceberg. I believe that in this way, Spain would be pioneer in this approach of prevention in terms of oceanic islands of volcanic origin. On the other hand, I hope that not only endow it with a buoy to El Hierro, but some other more in the corners of the island. The same concept applies to the rest of the Islands with volcanic risk. La Palma, Tenerife and Lanzarote. Good luck

5 hours ago

jand

#3504
February 25, 2013, 20:51:51 PM
http://www.avcan.org/?m=Noticias&N=948

The IEO will control the satellite waters around the  El Hierro Vocano.

The Oceanographic Centre of Canary of the Institute Spanish of Oceanography (IEO) welcomes today Monday the first scientific meeting of project Vulcan which aims to continue with investigations begun more than one year ago in the vicinity of the submarine volcano on the island of El Hierro. The Vulcan project will be available for this purpose in the most modern research vessel of the Spanish fleet: Ángeles Alvariño, belonging to the IEO. It will be carried out three multidisciplinary campaigns of geology, physics, chemistry and biology around the island of El Hierro.


Monday February 25 the first meeting of project Vulcan takes place in the Oceanographic Centre of the IEO Canarias. One of its main objectives is to create a platform that allows to know and inform in real time on the waters around the volcano physico-chemical properties.


Scientists installed a buoy equipped with physical and chemical sensors that can transmit data via satellite and via the web   www.vulcanoelhierro.es, any user can access the data in real time.

jand

#3507
March 03, 2013, 19:46:42 PM
Someone has just asked on the Avcan Facebook page this question :


Algún entendido en geología o vulcanología sabría explicar por qué el tremor vulcanológico de la isla de La Palma ha aumentado tan significativamente desde las 4 de esta tarde??

http://www.01.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=EHIG_2013-03-03&ver=s&estacion=EHIG&Anio=2013&Mes=03&Dia=03

Some understanding in geology or volcanology explain why tremor volcano on the island of La Palma has increased so significantly from 4 this afternoon?

http://www.01.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=EHIG_2013-03-03&ver=s&estacion=EHIG&Anio=2013&Mes=03&Dia=03

duncolm

#3508
March 03, 2013, 19:49:12 PM
Either the wind's shaking the vibration detectors or it's gonna blow....

jand

#3509
March 03, 2013, 19:57:53 PM
This has just been posted on the Avcan facebook page : ,, The seismograph is very close to the runway of the barranco de Las Angustias,,,

Its the vibration from all the water running down the Barranco pretty impressive though.
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