El Hierro

[fifi]

The mind boggles.[]

[SurfJames]

I LOVE this thread. I regularly log in and read the amazing contributions from jand and fifi. I have learnt so much about volcanos.

Thanks everyone...keep the news flowing.  You're a couple of stars imho!

[fifi]

Ah you are a sweetie [:X][] I LOVE it too. []

[kevin2003]

quote:Originally posted by fifi

The mind boggles.[]

[pescatore]

Please keep up with your reports Fifi and Jand they are very interesting, sitting here in blighty you'd never know anything was going on in El Hierro, nothing on the TV or in the paper....

P.S those that don't like the thread, you can always stop reading it!

[Surfista]

Indeed, keep up the good work. I am fascinated with the events and look forward to your posts.

[jand]

To be fair to jand TripleH, she is living on the Island. You "had a bit of a damper on your holiday" for just a couple of weeks. Jand is genuinely worried and living there and trying to keep abreast of what is happening. There is a difference.

Fifi I could not have put it better myself.

From the start as my older posts stated I have been genunely worried and of couse still are and infact I am much more worried now not just for myself and my family but for the people on El Hierro and the other islands thats MY OWN OPINION.

This on the other hand is a once in a life time experience and I did not think in my lifetime I would see any volcanic activity on El Hierro.

I also have learnt and still are learning so much about Volcanoes .

As Fifi says all over the world they are talking about El Hierro and there are some fascinating blogs by experts in geology and although they are not scientists sometimes they seem to be making more sense of things which they back up with graphs and other things.

My posts and I am sure Fifi will also agree that her posts also are not meant for scaremongering.

All our posts are keeping up to date on what is happening hour by hour and day by day on El Hierro at the moment .

[jand]

http://i40.tinypic.com/2i7molu.png

This map relates to my previous post about the discussion on the network of caves in El Hierro.

[jand]

There has been a 3.8 earlier this morning at 0234hrs but it just shows as Canary Islands it does not say if its El Hierro?.

IGN have not given the depth yet.

1110705

07/11/2011

02:34:38

28.8238

-19.4235





3.8

4

CANARY ISLANDS, SPAIN REG

[jand]

Just a thought dont think it was on El Hierro as all the other earthquakes on El Hierro seem to start with 27.something  and  17.something

This one starts with 28.something and 19.something.

I could be wrong though.

Update

It was far west of La Gomera in the Atlantic Ocean.

[jand]

www.earthquake-report.com

Update 06/11 – 22:49 UTC :
 We have a present for our volcano stone enthusiastic readers. A click on the picture will link to a gallery with detailed images of found pumice.


www.flickr.com%2Fphotos%2Fnehemiashd%2Fsets%2F72157628068108268%2Fwith%2F6319491828%2F&h=NAQHLgSf8AQHh3v2alO_oFneGHNec1Qo5bAiujMJPZncdgw

[jand]

En el día de hoy el INVOLCAN con el apoyo y la colaboración del Servicio de Helicópteros de la Guardia Civil en Canarias han procedido a la toma de imágenes térmicas de la erupción submarina así como a la realización de medidas de gases volcánicos en el aire ambiente de la zona.

Translated

In today's INVOLCAN with the support and collaboration of the Civil Guard helicopter service in the Canary Islands have proceeded to the taking of the underwater eruption thermal imaging and measurements of volcanic gases in ambient air in the area.

[jand]

www.abc.es

The Government of the Canary Islands has lost part of the data collected in the last days on the underwater eruption that suffers from the island of El Hierro, the most important volcanic phenomenon occurred in the Islands and Spain in the past 40 years. After a computer error, technicians from the regional authorities are now working to try to recover the information processed by stations GNSS ("Global Navigation Satellite System", its acronym in English), which constitute the active geodetic network of the Canary Islands, owned by the regional executive. In El Hierro, the station is located in the municipality of La Frontera.


Alarms jumped on 31 October. On 1 November he was holiday and day 2 when he informed the Canarian Government departments involved in the control. GNSS artifacts had ceased issuing information of the Rinex - Receiver Independent Exchange format of text files that store the data - the main server during the days 28, 29 and 30 as a result of "a bug in the updating of the system', according to official documents. While the service is again operational, technical staff continues to work to recover the lost information, «which is of vital importance for the analysis of the seismic activity detected on the island of El Hierro», according to reads an official communication which has had access ABC. Sources autonomic Executive claimed last night that problems occurred in a single stations and that it is not possible to determine the amount of lost data.


During the volcanic crisis, the information issued by the GNSS stations has been fundamental to the study and monitoring of seismic movements and deformations suffered by the island. Agencies like the National Geographic Institute or Instituto Volcanológico de Canarias have worked with these data.



An error "system update"






The disconnection. On 28, 29 and 30 October, GNSS stations not issued the information of the Rinex - data - the main server files.


The cause. Official documents attributed to a computer failure - "in the updating of the system" - the fall of the network of stations, whose information "is of vital importance".


The version of the Canary Islands Government. He says ignore the volume of lost data and that there were problems in a single season.

[jand]

www.laprovincia.es

Scientists believe that there may be several eruptive process in El Hierro



The research suggests that the magma chamber located below the Earth's crust could be transmitting energy vertically into two distinct eruptions, serving each on their own


Visit the special of iron | Check the status of the tremor

PEDRO GUERRA and if under the iron had several eruptive processes underway? The Group of scientists, takes it the vital signs to Meridian Island no longer dares to assure that there under the youngest of the Canary Island building is currently a single eruptive process that winds into the depths. With the new situation that has arisen over the last week, with the expulsion of magmatic material in the South and strong tremors in the North, not preclude the possibility that at the moment there are at least two distinct eruptive processes, which could be acting on their own to each side of the island.

What does seem clear is that the volcano in El Hierro hides an immense amount of magma. After the latest calculations from, above all, the deformation of the island, is the amount of magmatic material hidden in the depths of approximately a kilometer cubic, i.e. one billion cubic metres, more than twenty times to believed at first. This, according to scientists, is enough magma to generate an eruption similar to that for six years in several stages from 1730 to 1736 fueled the Timanfaya, Lanzarote. All of this course, in the case of the volcano to decide to expel all the material that was inside, something that not always the case. It is possible at the moment that the iron can produce a process that takes up more than one year to complete, although it can be also concluded in a matter of days.

But scientists are already working with the idea that there can be at least two eruptive processes under way, in the North and South. A magma chamber located below the Earth's crust pre-Roman the figure of the cubic km of magma, and from there could be conveying energy vertically to two distinct processes separate. With this theory would explain perfectly the situation being experienced in these past days the iron.

Since last October 10, an fisural eruption in the South, in the depths of the mar de Las Calmas, eject magma at a depth of 200 meters. With almost a month of eruption and once it appears that he had slowed down after a first week of great activity, since last Thursday appeared new spots of sulphur, this time closer to the sea, even on Saturday to bring at least two explosions which expelled ash and stones to about twenty meters in height. Probably the volcanic edifice to be built with the expulsion of magma has grown and creates explosions, reason by which from Saturday the people of La Restinga is dislodged before the risk of occurrence of much more dangerous explosions.

Different scenario
In the North the scenario is different. There is no evidence that magma is leaving no fissure and the situation is of a remarkable seismicity, which arrived last Friday to provoke an earthquake measuring 4.4 on the scale Richter which was felt up in Tenerife and La Gomera. This earthquake occurred other successive throughout Saturday and Sunday whose magnitude reached the 3.9 degrees on the Richter scale; the last of them, on the evening of yesterday.

By these two so differentiated scenarios scientists are beginning to think that it is possible that two different eruptive phenomena, are taking place in El Hierro although the possibility that is one whose magma only circulates along a lane in the depths of the island is not ruled out. Even, another third theory studies the possibility that a third process also exit through the center of the island. This is based on that, within the earthquakes who feel in El Hierro during the last week, a group of them is associated around 20-25 kilometres in depth, and other, situated between the 10-15 kilometers deep. What does seem clear is that the volcano of El Hierro is not any volcano. Magmatic material custody sufficient to rule out any theory.

[jand]

At last at least some coverage in the Uk.

www.dailymail.co.uk



Ready to blow? Homes and roads evacuated on Spanish Canary Island after 10,000 underwater volcanic tremors in three monthsShips ordered away from port and planes banned from flying over El Hierro

Eyewitnesses report material being spewed 20m into the air from water

By Chris Parsons

Last updated at 8:16 AM on 7th November 2011

Comments (0) Add to My Stories Share Homes have been evacuated and roads closed on the southern-most Canary Islands following a government-issued warning about a possible volcanic eruption.

Tremors have been felt on the southern tip of El Hierro, in the Spanish Canary Islands, raising fears of a possible eruption off the coast of Spain.

El Hierro experienced two earth tremors last week alone, while more than 10,000 have been recorded in the past four months.
Scroll down for video
 Active: The island of El Hierro, off the Spanish Canary Islands, has recorded 10,000 tremors in the last three months
The regional government of the Spanish Canary Island issued a 'yellow' volcanic eruption alert yesterday - the second on a four-level scale - and closed some hillside roads to avoid injury from falling rocks.

The island has some 500 volcanic cones, and was last shaken by a 4.3-magnitude quake late on Saturday.
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New fears over an eruption came after solid material was seen spewing from the sea in the area near El Hierro.

Government officials said smoky magmatic material has again been found in the sea after an underwater volcanic eruption began on October 10.

Eyewitness reports claimed that small explosive plumes and jets could be seen from the ocean surface.

  Bubbling under: The island was last shaken by a 4.3-magnitude quake on Saturday, but has been spewing material since, according to witnesses
Others who have seen the volcano site say material is being ejected as high as 20 metres into the air.

New evacuations have also been called for people living on the southern end of the island due to the renewed eruptive activity.

Spanish authorities have also shut down access to La Restinga, a port on El Hierro island.
Ships have been ordered away from waters around the port and aircraft have been banned from flying over the island's southern tip.

 Map showing the location of the volcano off the coast of El Hierro in the Canary Islands
La Restinga's 600 residents were also evacuated last Tuesday after volcanic activity began.

The regional government of the Canary Islands says scientists have detected airborne volcanic fragments called pyroclasts rising from the sea off La Restinga.

The government said it awaited scientific reports on the danger posed by pyroclasts, but a research vessel that was collecting samples there has been ordered to desist.


Read more: http://www.dailymail.co.uk/sciencetech/article-2058436/El-Hierro-volcano-ready-eruption-Homes-evacuated-Spains-southern-Canary-Islands.html#ixzz1d0SKpfm2

[jand]

Juleswww.jonfr.com/volcano

P says:

 November 7, 2011 at 08:42

Explosion followed by tremor drop, so a new fissure opened or perhaps a block cleared?
 http://www.01.ign.es/ign/head/volcaSenalesDiasAnterioresHora.do?nombreFichero=CHIE_2011-11-07_08-09&estacion=CHIE&Anio=2011&Mes=11&Dia=07&tipo=2&hora=08-09

[fifi]

Thanks Pescatore and Surfista for the nice comments.[]

Cabildo de El Hierro
@PrensaElHierro Cabildo de El Hierro
El Hierro promociona hoy sus volcanes en la World Travel Market.
20 minutes ago via Twitter.

El Hierro promote its volcanos at the world Travel Market.

                ...........

I presume all the news articles about the missing information are mainly about the station H104 which the Islanders were up in arms about and was discussed here a few days ago. Sections of tremor graphs were also cut and this was noted by the Islanders who contacted the IGN about it. http://www.abcdesevilla.es/20111107/sociedad/sevp-canarias-pierde-datos-vitales-20111107.html



Location of the 3.8



In one article I read last night PEVLOCA said that they were managing information so as to not cause doubt amongst the Population. I noticed the other night that the only station recording the tremors was El Hierro. All of the other Canary Island stations were turned off.

            ....................

Nice reassuring tweets.[]

Cabildo de El Hierro
PrensaElHierro Cabildo de El Hierro
Weapons Alpidio visited evacuees and "I feel very calm, aware of the situation."
56 seconds ago
Cabildo de El Hierro
PrensaElHierro Cabildo de El Hierro
Jose M. Perez "close relationship between governments is essential, here there is only one government, united in the service of people.
2 minutes ago
Cabildo de El Hierro
PrensaElHierro Cabildo de El Hierro
Alpidio Armas said that the gesture of the visit of Vice President demonstrates the harmony between administrations.
4 minutes ago

[fifi]

The amount of CO2 emitted has grown from 345 tons per day to 990 on 6 October, when the first outbreak, 1218 to present. Although the data is not a 100% indicator, it does suggests that there is an increase of emissions, as seen on Saturday in the two explosions (rooster tails descriptive terminology) that raised columns of up to 15 meters water and ash.

In addition, at 19.25 (GMT) there was a 3.9 scale earthquake north of the island. This implies that the risk of landslides that have led to the closure of tunnels Roquille and half a dozen roads are maintained. Therefore it is likely that the 51 people evacuated from La Frontera will have to continue without returning to their homes.

There are two parallel courses in El Hierro. The population, trying to adapt to successive problems, and seismic-volcanic process, subway and unpredictable. The most visible of the former are the more than 500 displaced from their homes since the eruptions began, and tremors. 450 or 500 are residents of La Restinga who have experienced two evacuations almost straight (one of 12 to 21 October; one that began on Saturday) due to the risk of volcanic mouths open to about 1,800 yards offshore throw ashes or gases that endanger their health, and 51 people evacuated from towns in the north (the area called the Gulf where the economic capital of the island, La Frontera) the danger of landslides after the focus of the movement seismic displace the coast.

But they are not alone. The entire island living waiting to see what happens. People like the workers of Villa El Mocanal adjacent restaurant and a club who have made about when "going to exploit," or citizens who have improvised seismic detectors with bottles filled with water or measuring the intensity of earthquakes ( more than dozen a day, although only one or two above magnitude 3, which theoretically makes them visible) by the vibration of the crystals or the behavior of animals.

Also directly affected citizens who are forced to take the mountain road, more than 40 minutes of curves to make a path that could be resolved in 10 minutes through the tunnel of The Roquille, closed as a precaution.

And feel particularly its effect fishermen and owners of diving clubs and other businesses of La Restinga, which carry a month without "putting a dollar at home," a denunciation Fernando Gutierrez, president of the fishermen of the village, who was on Saturday how a meeting called for to claim aid is interrupted by the new order of eviction. "The offered so far, ICO claims are an insult," he says, before the economic catastrophe they face a month after stopping activities.

Beatriz Delgado is one of those affected. It takes five years at La Restinga, where rent apartments. "What I've seen has been impressive," says the columns of water. "But I'm tired of being evicted. Let's see if anything comes out at once, left a crater 20 to 30 feet deep in order to see when diving," he says in a bar in El Pinar, a town 14 kilometers from Restinga accommodation where they have found most of the displaced.

Another group of islanders who have had their lives turned upside down by the phenomenon. Are scientists the National Geographic Institute (IGN), which take almost four months following the process, and volcanologists and seismologists from other institutions (Institute of Technology and Renewable Eneregías ITER, CSIC, Ramon Margalef ship), plus the fans that follow the facts and sometimes clashes with concern and doubts, the unpredictability of the behavior of each decision process makes you look very closely, but not the subsequent dispute. In fact, to avoid transmitting the doubts, the authorities and the scientific committee of the Special Emergency Plan for Volcanic Risk in the Canaries (Pevolca) have decided to control the information to the fullest.

Of course that does not stop leak. Those that affect people most directly relate to the duration of the eviction. "Scientists are in favor of that, if no new explosions today, people can return to La Restinga" says a person who wants to be defined as "amateur seismologist." The official spokesmen of the Cabildo and deny Civil Protection. "It's not going to make any decisions until Monday's meeting of the Scientific Committee. You have to wait and see if there is emission of ash and gas because you can not put people in danger. Another thing is that you do as the other time, and visitors are allowed half an hour or so to serve the houses, "said council spokeswoman. Said and done, all along this Sunday people have been approaching the control that the Civil Guard is installed on the only access road to the island to go home to pick something up or just water and feed the pets . They have to do an hour. It has also enabled a permit for the displaced in the area of La Frontera.

Forwards seismic activity

This Sunday, a helicopter from the Canary Islands Government has flown over the area, and seems to have returned to calm. Or at least the previous situation, with the slick at sea and bubbling areas, tells the council spokesman. "What we've seen is that the mouths are the same distance," he adds.

From the gutters of the road to the town, the cars stopped accrediting journalists' interest, but also neighbors, for the evolution of the focus on Saturday so strikingly manifested. At first glance, the stain remains constant, although the direction of Pevolca said in a note that is more brown (presumably by an increase in emissions).

But even among experts there is doubt about the importance of such signals. "If the two explosions on Saturday [which raised water bodies and ashes of more than 15 meters call rooster tails form] would have occurred at night, people would not and would not have been evacuated, the seismic situation has not changed, as seen by the measurements of tremor, "said a seismologist. The data collected by the night in the IGN post this in La Restinga credited back to normal.

Instead, Raja Fernando, head of the current web Volcanic Islands, a reference to a population that has become an expert unwittingly in these matters, states that "there seismologists and volcanologists, especially foreigners, who believe that the evacuation was that have occurred before and have been maintained. " "Of course you may think in the case of La Palma, in 1971," he admits. (Translated by Google http://www.elpais.com/articulo/sociedad/volcan/submarino/Hierro/aumenta/actividad/elpepusoc/20111106elpepusoc_3/Tes )

                        ................

The latest earthquake felt by the population.. http://www.ign.es/ign/layoutIn/volcaDetalleTerremotos.do?evid=1110733&zona=2

[fifi]

By midmorning on Monday has revived the eruption in El Hierro with a bubble of gas and ash on the surface of the sea of calm, although smaller than that of Saturday.

Witnesses describe ;a "huge stone"-a pyroclastic-that was thrown. The Civil Guard urgently evacuated neighbors who had come to La Restinga to collect belongings.

Canarian Government sources point out that the Civil Guard was limited to accelerate the disposal of neighbors who are housed in the residence of Valverde and at that time were in town.

The director of National Geographic Institute (IGN) in the Canary Islands has descatarado (ruled out?) there is a second eruption in the Northwest Frontier. He emphasized that only recorded eruption in the sea south of La Restinga. (Translated http://www.canarias7.es/articulo.cfm?id=237181)


          ...........................

http://www.diarioelhierro.es/t26496/pag01.asp?Id=26496&Tp=6&Md=7

Visible and infrared imagery from the most obvious surface manifestation underwater eruption is occurring. (See photo on above link)
City Council - 11/07/2011 (14:14 pm)

The non-tip causes an increase of 11 degrees in water temperature in the area of eruption

Water temperature in the surface environment of the Sea Calm, which is not affected strongly by the eruptive activity, has been 23.9 ° C, while recording the water temperature in the area where you can see the surface manifestation most obvious underwater eruption reaches the 35.3 ° C. This temperature difference in the surface environment of the Calm Sea clearly reflects a major heat flow as a result of the eruption

[woe10]

SORRY I STARTED IT NOW FIFI

[fifi]

No peeking Woe[][]

[jand]

Thanks Pescatore and Surfista for the nice comments.

Ditto !!!

[fifi]

Tweets

PrensaElHierro Cabildo de El Hierro
Today has seen another bubble size to be determined.
1 hour ago

According to IGN was repeated after 5 minutes of smaller, 3 to 4 meters high.
1 hour ago

The bubble grew so slowly for 15 seconds and then collapsed with small solid particles.
1 hour ago

[jand]

Update 07/11 – 15:30 UTC :

Photo is on earthquake-report.com


New jacuzzi who started working today approx. 0.7 mile out of the La Restinga coast

Jacuzzi activity information
 To picture to the right is a new jacuzzi who started his activity today (distance to La Restinga 0.7/0.8 miles following Raymond).
 The 2 other ones are still active and are located approx. 1 mile out of the La Restinga coast.
 The previous was about a mile from the Restinga, it is still active ...

[jand]

http://www.ustream.tv/channel/el-hierro1

This is a link to a live webcam on El hierro but at the moment looks like its not working.

[springer]

Thank you those of you who are taking the time to pull together this info in a single thread.  I appreciate your efforts. It is interesting and important.  If anyone is not interested, I cannot see why they bother reading it.

[fifi]

Thanks Springer.[]

Translated article from El Pais

    The process happening in El Hierro could be explained if one thinks of a giant tube of toothpaste that was underneath the island. The bottom of the container would be northwest of the Gulf, off the coast of La Frontera, and mouth in front of La Restinga in the south. The energy of the magma that rises would push the end of the tube. That's where earthquakes occur, but as the magma has a way out of the south is where the emissions occur.

    The example explains the latter situation, but does not clarify all doubts. As seen, there are two levels of seismic activity, 20 and 10 kilometers deep. And the connection between them is unclear.

Fortunately, the emission of magma is produced in a submarine valley. That makes exceptions like the explosions on Saturday, diluting gas at sea and not reach the air. Water pressure also prevents projecting pyroclastic-magmatic rocks, or ashes. If the formation of a volcanic tower emissions to become more shallow-depth-less danger that would reach more people. Then, the evacuation was inevitable and permanent, since it can be very dangerous substances in composition, sulfur oxides, for example, quantity or temperature. Among the scientists moved to the island there are some doubts about the sulfur smell that sometimes it feels. Some say it comes from within, land, and that would indicate that there is no gas pressure found a crack to exit. Others believe it comes from the sea.

[jand]

Photo showing on the Avcan Facebook Page


Spectacular picture taken on Board of the helicopter of the Guardia Civil in which members of INVOLCAN were the infrared thermography. Once again, our thanks and recognition to members of the unity of helicopters in the area of the Canary Islands, and thus to the whole body of the Civil Guard.




By: Canary VOLCANOLÓGICO Institute

[jand]

Thanks Springer its nice to hear some positive comment.

[jand]

http://www.ustream.tv/channel/el-hierro1

Webcam now working .