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El Hierro

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

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jand

#3541
March 18, 2013, 19:07:18 PM
The strongest one so far a 3.1 mg.

1197639 18/03/2013 17:39:53 27.7674 -18.1259 18   3.1  4  BORDER W.IHI
  • info

jand

#3542
March 18, 2013, 19:19:19 PM
Islanders are reporting  feeling movements on the island.

,,At the moment we have received reports that you note vibrations in various parts of the island as the Mocanes, the colegio de Frontera, Los Llanillos and Sabinosa, where furniture and doors creak with the biggest and the bottles with water are shaken to the sound of the earthquakes, the last preference towards NNW - SSE ,,


http://www.avcan.org/?m=Mapas & a = map & mf = 5428

jand

#3543
March 18, 2013, 19:30:58 PM
Interesting explanation to the types of earthquakes.


http://kiska.giseis.alaska.edu/input/sanchez/volcseis.html

jand

#3544
March 18, 2013, 19:53:14 PM
One of the islanders has just posted this on the Avcan Facebook page.


El sismo de 3.0 a las 18:07:49 se sintió en Los Mocanes, ya lo he reportado al IGN

At 18:07:49 3.0 earthquake was felt in Los Mocanes, I've already reported it at IGN

jand

#3545
March 18, 2013, 20:16:24 PM
19.50 clock - it now carried the expected stronger quake - 17.39 clock ML3, 1 in 18 km depth and at 18.07 clock ML3, 0 at 19 km depth - both in the western Gulf of
18.15 clock  - like the Involcan leave just keep volcanologists the University of Berkley, California  . strong movements on seismographs not a tremor, since the typical signal missing It will be a different phenomenon that we are experiencing in the last few hours.
Those earthquakes come closer to the Earth's surface and are now on average 15 to 18 km depth.

http://elhierro1.blogspot.de/

jand

#3546
March 18, 2013, 20:50:38 PM
Report from an islander:


Hola!!! gracias Enrique por esa información, siempre pendiente de nosotros, aún de tan lejos. Se sienten vibraciones y sensación de mareo en El Mocanal.

11 minutes ago via mobile · Like · 2..


Maria Espinosa Padrón Hola!! gracias Enrique por estar siempre ahí, aún desde lejos, siempre informando. Se siente vibración contante bajo los pies y sensaciòn de mareo , como viajando en barco

Hello!! Thank you for always being there, even from afar, Enrique always informing. Constant vibration under the feet and feeling dizzy, feel like traveling by boat.

jand

#3547
March 18, 2013, 21:08:36 PM
1197746 18/03/2013 19: 21: 50 27.7987 -18.1294 19   2.7  4  NW FRONTERA.IHI
  •  
    1197750 18/03/2013 19:23:27 27.8548 -18.1364 10   2.1  4  NW FRONTERA.IHI
  •  
    1197752 18/03/2013 19:30:11 27.8749 -18.1461     2.2  4  NW FRONTERA.IHI
  •  
    1197754 18/03/2013 19:31:11 27.8244 -18.1249 12   1.9  4  NW FRONTERA.IHI

  • 1197757 18/03/2013 19:33:52 27.9155 -18.1229     2.0  4  NW FRONTERA.IHI

  • 1197740 18/03/2013 19:40:02 27.7848 -18.0986 17   2.4  4  NW FRONTERA.IHI
  •  
    1197741 18/03/2013 19:41:45 27.7917 -18.1133 19   2.3  4  NW FRONTERA.IHI

  • 1197744 18/03/2013 19:43:15 27.8116 -18.1114 15   2.4  4  NW FRONTERA.IHI

  • 1197745 18/03/2013 19:43:28 27.7828 -18.1016 16   2.3  4  W FRONTERA.IHI

  • 1197742 18/03/2013 19:45:12 27.7448 -18.0980 17   2.0  4  BORDER W.IHI
  •  
    1197743 18/03/2013 19:46:01 27.7397 -18.0745 15   2.2  4  BORDER W.IHI

  • 1197747 18/03/2013 20:01:28 27.7621 -18.1432 19   2.0  4  BORDER W.IHI
  •  
    1197749 18/03/2013 20:06:18 27.8000 -18.1476 18   2.2  4  NW FRONTIER.IHI

  • 1197751 18/03/2013 20:08:58 27.7967 -18.1211 18   2.1  4  NW FRONTIER.IHI
  •  
    1197753 18/03/2013 20:18:56 27.8290 -18.1387 13   2.0  4  NW FRONTIER.IHI

  • 1197755 18/03/2013 20:20:14 27.8729 -18.1270 13   1.8  4  NW FRONTIER.IHI
  •  
    1197756 18/03/2013 20:21:38 27.7702 -18.1100 18   2.0  4  BORDER W.IHI

jand

#3548
March 18, 2013, 21:33:15 PM
Involcan on their Facebook page  have reported the island is swelling.

El último dato recibido de la estación GPS de la Red Geodésica Canaria instalada en Frontera, El Hierro, muestra que la tendencia al hinchamiento de la isla se confirma. En la gráfica se puede ver ampliada la flecha que señala el último dato, que como se puede observar, ya comienza a salirse de la escala, establecida en estos momentos en 12cm.

The latest data received from the GPS station of the
geodetic network installed in Frontera, El Hierro, Canary shows that the tendency to swelling of the island is confirmed. In the graph you can see expanded the arrow pointing the latest data, as you can see, already beginning to scale, established at a time when 12 cm.

jand

#3549
March 18, 2013, 22:12:31 PM Last Edit: March 18, 2013, 22:19:57 PM by jand

jand

#3552
March 19, 2013, 20:09:04 PM
2013-03-19 17:24 UTC


A comment from Joke Volta, who has picked up her art work again, but wants to share a few words with our readers :
W will to wait a few more days to have a better view about the current intrusion. As it looks now, there is not enough "power" to end up in an eruption.  But..well..this can change, just as the" sudden" appearance of this activity yesterday afternoon.
In the Golfo/Frontera-area people do feel the quakes. Down here in El Pinar, I do not notice movements...
It surely would not be safe to enter lava-tubes or discovering caves at this moment for the reason that there can be a gas-escape based on the current activity.
I hope that every visitor of the island will get information after or even before they arrive. Until now it is not dangerous, but I do  recommend to get a steady information about the situation.Earthquake-report offers this – regards to all of you, Joke

2013-03-19 16:25 UTC
- 94 earthquakes listed until 14:00 UTC
- The Salvamar Adhara has been cruising in the Las Calmas sea earlier today (based on data from Marinetraffic.com).
- The seismic activity has weakened considerably since 11 AM UTC.  Strongest earthquake M2.6, depths unchanged.

www.earthquake-report.com

jand

#3555
March 21, 2013, 06:13:17 AM
After a fairly quiet day yesterday tremor is back.


http://www.02.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=CHIE_2013-03-21&estacion=CHIE&Anio=2013&Mes=03&Dia=21

1198658 21/03/2013 04:38:19 27.7741 -18.1494 16 1.9 4 BORDER W.IHI

  • 1198659 21/03/2013 04:43:08 27.8246 -18.1681 12 2.0 4 NW FRONTIER.IHI

  • 1198660 21/03/2013 04:43:45 27.7963 -18.1671 15 1.9 4 BORDER W.IHI
  •  
    1198661 21/03/2013 04:46:47 27.8529 -18.1732 1.9 4 NW FRONTIER.IHI
  •  
    1198662 21/03/2013 04:48:13 27.7783 -18.1785 18 2.2 4 BORDER W.IHI

  • 1198663 21/03/2013 04:51:51 27.7538 -18.1699 18 1.6 4 BORDER W.IHI

  • 1198666 21/03/2013 04:54:05 27.7635 -18.1560 20 1.8 4 BORDER W.IHI

  • 1198669 21/03/2013 04:58:18 27.8106 -18.1602 17 2.0 4 NW FRONTIER.IHI

  • 1198668 21/03/2013 05:04:06 27.8204 -18.1512 14 1.7 4 NW FRONTIER.IHI
  •  
    1198670 21/03/2013 05:04:20 27.7901 -18.1409 16 2.3 4 BORDER W.IHI
  •  
    1198664 21/03/2013 05:06:06 27.8380 -18.1657 18 2.1 4 NW FRONTIER.IHI

jand

#3556
March 21, 2013, 12:13:04 PM
Translated.


The way in which has begun the seismic phenomenon in the island of El Hierro before yesterday at 2:30 in the afternoon and the depth to which earthquakes are originating suggests that there will be a volcanic eruption in the short term. According to Vicente Soler, volcanologist of the volcanic Canary Islands station (CSIC), there seems to be power enough to lead to an emission of lava intrusion.

The phenomenon that is taking place in El Hierro has its origin in the arrival of a magmatic intrusion that collides with the base of the island. Not having enough energy, these pockets of magma not come to break the crust and go outside in the form of rash. Effects manifest themselves only in the form of deformations measured by GPS, and intense seismic activity; both parameters reported by IGN.

Since it began volcanic activity in the Western-most island, in July, 2011, have been 16.977 seismic events. Temporal and spatial distribution (figure attached) makes us think that there have been five ascending magma intrusions that have collided with the island building, and only the first of all, has given rise to an eruption.

The interpretation of the data reveals that the increase of seismic energy in July of 2011 occurred very slowly as it would be for a large intrusita mass, taking weeks to produce earthquakes of magnitude 3 on the Richter scale. On the contrary, recent entries posted two days ago by the IGN reach values of magnitude of 3.1 a few hours started the phenomenon. The interpretation of these data leads to the volcanologist Vicente Soler to the hypothesis that the mass of magma that has ascended to the base of the island is small and therefore, not enough to cause a rash at the moment. A follow-up of the situation and the study of the data in the next few days will need to assert that assumption.

All indications are that earthquakes will continue producing and the insular platform will be deformed as a way to liberate the energy of the mass of ascending magma. But all of this is part of the normal seismic activity of an active volcanic island and there are historical precedents in other islands of the archipelago.

http://www.daciencia.com/2013/03/20/vicente-soler-no-parece-haber-energia-suficiente-para-una-erupcion-en-el-hierro/?utm_source=dlvr.it&utm_medium=twitter

jand

#3557
March 21, 2013, 14:21:09 PM
 Buenos días, la HI05 muestra elevación en la vertical y el último sismo: 1198839 21/03/2013 13:23:59 27.7584 -18.1525 16 2.6 4 W FRONTERA.IHI 'http://www.ign.es/ign/resources/volcanologia/www/dir_images_terremotos/detalle/1198839.gif'

Good morning, the HI05 shows elevation in the vertical and the last earthquake: 1198839 21/03/2013 13:23:59 27.7584 - 18.1525 16 2.6 4 W

border.'http://www.ign.es/ign/resources/volcanologia/www/dir_images_terremotos/detalle/1198839.gif' IHI

jand

#3558
March 21, 2013, 17:09:23 PM
Translated


21/3/2013. A multidisciplinary team consisting of scientists from the Canary Islands Oceanographic centers, Malaga, Cadiz, Madrid and Balearic Islands of the Institute Spanish of Oceanography (IEO), of the University of Las Palmas de Gran Canaria, of the University of La Laguna, the Spanish bank, algae and the Museum of nature and the man of Tenerife, set aboard the research of the IEO Ramón Margalef vessel heading to the island of El Hierroto begin the first of three Oceanographic campaigns provided for in the context of the Vulcan project.



The main objective of the Vulcan project is to assess the impact of the volcanic event underwater of the island of El Hierro on the marine ecosystem, physico-chemical characterization - biological medium. In addition, there will be new uprisings on the island topobatimetricos.

The affected ecosystem is one of the richest and most sensitive of the Spanish territory. El Hierro island was declared a world biosphere reserve in January 2000, has a proportion of protected areas that reaches the 58.1% of its surface and a marine reserve in the Mar de Las Calmas, where is located the eruptive focus. Therefore, a physico-chemical characterization - biological of the marine ecosystem of the island of El Hierro is considered vitally important to quantify the degree of the eruptive process on the same condition.

Project Vulcan (Volcanic erUption at the iron IsLand.) Sensitivity and ReCovery of the mAriNe EcOsystem) will install in addition a buoy equipped with physical and chemical sensors that can transmit data via satellite. Through the web (www.vulcanoelhierro.es) any user can access the data in real time.

http://www.avcan.org/?m=Noticias&a=noticia&N=955

jand

#3559
March 21, 2013, 17:21:20 PM
There have been 96 earthquakes so far today the latest one was at only 2 km depth.

1198929 21/03/2013 16:26:53 27.7293 -18.0689 2     1.4  4  SW BORDER.IHI

This area is close by to Tangangasoga.

jand

#3560
March 21, 2013, 19:09:09 PM Last Edit: March 21, 2013, 19:19:34 PM by jand
004 NOTA ESPECIAL DE SEGUIMIENTO DEL PROCESO SISMO-VOLCÁNICO DE LA ISLA DE EL HIERRO.
21/03/2013 - 21:45h kuwait (18:45 canarias - UTC)


004 SPECIAL NOTE PROCESS TRACKING VOLCANIC EARTHQUAKE ON THE ISLAND OF IRON. 21/03/2013 - 21: 45 h kuwait (18:45 Canary - UTC) today we had a third enjambrito in this new period of activity, that if smaller in terms of energy released is concerned with respect to the previous two a couple of days ago, though with 98 localized events and with a depth media that stays between 16 and 18 km. It has been located farther north than the last and more to the West than the first to the Northwest of the tip of white sand. (Enrique from Kuwait

And that will be the next we?, so far I can tell you that this swarm walks through a field asismico in terms of earthquakes of 2.5 or greater is concerned, i.e., looking for areas where there is no seismicity located by IGN since the start-up network. In fact in this map looks as each swarm occurred on the island of iron has been in a different zone. This swarm, in light blue, indicates that it moves by the North and it seems that you have connected to the West with the area crushed by the crisis Sanjuanera (red), although still has a zone from the tip of white sands to the South, which I think is candidate for the next, we will see what happens (Enrique)

http://www.avcan.org/?m=Mapas&a=mapa&mf=5458

http://www.avcan.org/?m=Mapas&a=mapa&mf=5458


www.facebook.com/AVCAN

jand

#3561
March 21, 2013, 19:36:25 PM Last Edit: March 21, 2013, 19:38:18 PM by jand
http://www.avcan.org/sismica/graficas/G2238.jpg?t=1363893835


Translated

and if we compare all the released and accumulated from the beginning, seismic energy more de16.000 earthquakes nothing less, are three main swarms as three large steps, the first from the left, which gave rise to the eruption to la restinga, second which seems that it gave rise to a rash at great depth in the Gulf and the third it seems that you caused some localized by the Hesperides and is attributed to the third possible eruption... confirmed 100% only the first, which was the only one that we all saw with our eyes or webcams.(Enrique).

www.fcebook.com/Avcan

jand

#3563
March 22, 2013, 06:59:09 AM
There was a 3.8 earthquake last night the strongest so far felt over most of the island.

Www.earthquake-report.com

jand

#3564
March 22, 2013, 17:13:11 PM
Lots to report today and lots of activity.

..INSTITUTE VOLCANIC CANARY ISLANDS

2 hours ago



..The behavior of the diffuse emission of CO2 and H2S registered during the last few months in the geochemical station HIE07 of the ITER at the service of the INVOLCAN can be seen in the following graph. Prior to the recent period of anomalous seismic activity that is this recording in El Hierro has been detected a relative increase in the diffuse emission of CO2, then and so simultaneously experience a relative decrease in the values of diffuse emission of CO2 and a relative increase in the values of diffuse emissions of H2S. This geochemical behavior of these two volatile species supports a process of movement of magma beneath El Hierro.
..

jand

#3565
March 22, 2013, 17:15:21 PM
Translated.

,,Spasmodic tremor: Most of the volcanic tremores, are presented as a sinusoid irregular, giving to the seismograph frequencies between 1 and 5 hertz. They are of the type known as harmonic tremor. But a second type of tremor, SPASMODIC TREMOR called, consists of high frequency pulses, usually between 5 and 10 Hz or more. In some cases, pulses, are discrete earthquakes that produce separate P and S waves, but in other cases, there is no differentiation of phases, P and S. The spasmodic signal is continuous in the sense that new "sub-events" or "eventitos", follow until the coda or final part of the previous "sub-event" for registration, returns to normal or usual seismic silence values. An example what we have in the attached figure, or in the seismogram of CHIE... Spasmodic tremores were collected in the Kilawea, Monte St.Hellens, Klyuscevskov, Vesuvius, Long Valley Caldera Foot of image: seismic data on the one hand, of a typical quake, and another, that of a characteristic spasmodic tremor, captured in the Mammoth Mountain in California. Spasmodic bursts, present in their major events, a coda, tail or end, with superimposed by other small earthquakes signal. We also show these bursts or pulses, with a high level of background signal which persists beyond normal decay times for a typical event. CODA: Some synonym of spasmodic: contractile, convulsive, agitated, hefty, trembling. This has been a free translation of a fragment of the text of "Volcanic Tremor" of Stephen R.McNutt. which can be downloaded from the University of Alaska:

http://www.aeic.alaska.edu/Input/steve/PUBS/McNutt-EESS-tremor.PDF (JR) (

www,facebook.com/AVCAN

jand

#3567
March 22, 2013, 18:35:03 PM
INVOLCAN have just put this graph of the vertical deformation of Sabinosa.


https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-prn1/893904_568467579853305_1430477908_o.jpg

jand

#3568
March 22, 2013, 18:43:27 PM
This is interesting the 3.8 mg yesterday evening is in the same position as the Lomo Negro eruption in 1793 shown in figure 1.

http://www.sciencedirect.com/science/article/pii/S0377027305002684

jand

#3569
March 22, 2013, 19:37:45 PM
This has just been posted on the Avcan Facebook.

Maybe somebody reading this please could explain what it means.

si lo que ves es como esto en las muy bajas frecuencias (0'5-2 Hz), es algo que se está viendo desde hace horas en TODAS las islas, pero pongo el caso de EOSO:

http://www.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=EOSO_2013-03-22&ver=s&estacion=EOSO&Anio=2013&Mes=03&Dia=22&tipo=2Fabrizio

, if what you see is like this in the very low frequencies (0'5-2 Hz), is something that is being seen for hours in all the Islands, but put the case of EOSO:
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