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El Hierro

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

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jand

Thanks for looking Fifi.

There is so much to take in at the moment.

I maybe wrong with this statement but the earthquake near Maderia that happened this afternoon seems to follow the line along from the one from of all the earthquakes on El Hierro?

fifi

I havent had much of a chance to read or look today jand. I dont know anything about Madeira. Tanganasoga is shown in this video.

http://www.youtube.com/watch?v=RXBmh-qND_8&feature=related

There is a map with the location of it on this link. It is in the El Golfo area. http://en.zeropointfield.ch/2011/11/activity-of-the-tanganasoga-volcano-of-el-hierro/

jand

Thanks Fifi that link is really interesting and yes the Tanganasoga Volcano seems to be in the middle of the line of the swarm of earthquakes.

Could it be that this Volcano is waking up and everything that is happening is coming from deep under the bowels of this Volcano.

Could the magma be possibly filling up deep in the chambers under Tanganasoga.

We know magma has been travelling South to North and the earthquakes seem to be following the same path .

jand

This sounds about right putting huge wind turbines on an island that is having eartquakes and the land is unstable at the moment!!!!

The world's first renewable energy island
 Earthquake-repport.com likes to inform his readers about a "unique" El Hierro energy project.
El Hierro is set to become the first island in the world to be powered solely by renewable energy. The $87 million project will provide electricity for the island's 11,000 inhabitants using a combination of wind power and pumped water storage.
Today, El Hierro generates electricity with diesel oil transported from mainland terminals by oil tanker. The carbon impact is significant – in El Hierro's case it amounts to 18,200 tons of CO2 per year in power generation emissions alone, an impact that the renewable energy project will eliminate.
The project consists of an 11.5 megawatt (MW) wind farm and an 11.3 MW hydroelectric pumped storage plant that will provide the island's 11,000 inhabitants with 80 percent of their energy needs. The remaining 20 percent will be generated by solar thermal collectors and grid-connected photovoltaic systems.

fifi

It seems like a logical explanation jand allright.

http://noticiacanaria.visibli.com/share/W6QVRm

Involcan warns about the upward trend of the diffuse emission of carbon dioxide (CO2) into the atmosphere

 The volcanological Institute of the Canaries (Involcan) has warned the Civil Protection Plan for Volcanic Risk Islands (Pevolca) on the upward trend of the diffuse emission of carbon dioxide (CO2) into the atmosphere of the volcano of El Hierro, which has reached more than  63 tons a day. A value that is 4.83 times the usual average, which stands at the 345 tons per day.
The Canary Islands government said in a statement that the results of 8100 non-tip derived from measures that have materialized over the entire surface of the island The analysis assesses the temporal and spatial variations of the diffuse emission of CO2 into the atmosphere by the volcanic system .

Studies by Involcan, note that the gases represent the driving force of volcanic eruptions, while carbon dioxide is the second major component of the issue, after water vapor. Its low solubility in magma "makes this gas to escape with their ease of volcanic systems in depth."



The IGN has noted some volcanic activity in the stain of the Sea of Calm to 18:00 hours, coinciding with increased tremor.Because of this  the Civil Guard patrolled the area, perceiving a strong smell of sulfur in the area where the previous days had bubbling.

                ............

Tweets

volcanhierro @ volcanhierro
# ElHierro ground deformations in the Gulf indicates a slight increase, while the rest show deflation.
8 minutes ago

# ElHierro upward trend of the diffuse emission of carbon dioxide into the atmosphere from the building island of El Hierro
10 minutes ago

# ElHierro Tremor is saturating the graph
32 minutes ago

      ..................

Raymond Matabosch is describing a new vent. (His opinion)






At 16 h 00, appearance of a beginning of a new green spot  less than a kilometer from the port of La Restinga



Materials fuse glowing under the water in front of the  eruptive jaccuzy vent defined by Ramon Margalef ...

At 18.30 the lights are glowing  under water and materials in all directions, fuse more jaccuzy in front of which is on the vent mapped by Ramon Margalef (not a great translation sorry)

jand

Avcan Translated

Good afternoon. Stains that show higher emissions of CO2, are related to fractures and lines of discontinuity that gas can rise to the surface. That is normal in volcanic edifices as the iron, any discontinuity between the layers of pyroclastic, the lava flows and dykes, is used as a route of easiest ascent by gas. Not extrapolen gas-magma. What may be an easy climb for CO2, may be an impractical route for the magma. (Elena)


jand

In another post some have asked where see the deformation of the island of El Hierro. In the next access to the website of AVCAN can be seen that deformation on three axes: NS, EW and the vertical. Scrolling horizontally between two stations can only be seen on the IGN website and then have to know infer; deformation is clearly seen on the website of AVCAN. http://www.avcan.org/?m=GPS (Translated by Bing)
http://www.avcan.org/?m=Gps

TripleH

Er, where is everyone? Has something happened?? Serious.

jand

Data Update 21/11 – 12:46 UTC
 Contrary to what we said earlier on, a new stain might be forming. Ian Carson (see below) did report us a couple of hours ago that he saw signs of a faint Jacuzzi. The eruption Telefonica webcam did confirm Ian's words later on. Depending on the sunmight, the new stain can also be seen on the webcam. An additional sign of the present activity is the overflying Guardia Civil / Involcan helicopter. They are flying out when involcan can measure some emissions / water temperature etc.

jand

Just found on avcan.org's facebook site: http://www.facebook.com/pages/Actualidad-Volc%C3%A1nica-de-Canarias-AVCAN/163883668446#!/permalink.php?story_fbid=292383360795063&id=134042953295772

"URGENTE: Miembros de la Unidad de Helicópteros de la Guardica Civil, que actualmente colabora con INVOLCAN en la vigilancia de la erupción en el Sur de La Restinga han localizado una nueva boca eruptiva en el mar. Más datos en los próximos minutos.
 URGENT: Members of the helicopter unit of the Civil Guardica, currently working with INVOLCAN in the monitoring of the eruption in the South of La Restinga have located a new eruptive mouth on the sea. More data in the next few minutes. (Translated by Bing)"


jand

What is a volcano?
When pressure from the molten rock beneath the earth's surface becomes too great, the rock, usually accompanied by lava or gases, escapes through a fissure or vent in the crust of the earth. "Volcano" is the term given to both the vent and the conical mountain left by the overflow of the erupted lava, rock and ash.

More than 80% of the earth's surface comes from volcanoes. Innumerable volcanic eruptions formed the sea floor and some mountains; gaseous emissions from volcanoes formed the earth's atmosphere.

The name "volcano" is said to have come from Vulcano, a volcanic island in the Aeolian Islands of Italy. The name Vulcano originates from Vulcan, a god of fire in Roman mythology. The study of volcanoes is called volcanology (sometimes spelled vulcanology).

Seismographic monitoring, tiltmeters and surveillance by satellite all serve to predict activity in a volcano. Gas and steam emissions can also indicate an impending volcanic eruption.

There are more than 500 active volcanoes in the world. More than half of these volcanoes are part of the "Ring of Fire," a region that encircles the Pacific Ocean. The world's largest active volcano is Mauna Loa in Hawaii. Taller than Mount Everest, Mauna Loa's summit rises 56,000 ft (17,000 m) from its base below sea level.

What happens when a volcano erupts?


Lava can flow slowly or erupt violently into the air. The rocks blown out of a volcano – called pyroclastic rocks – fall back to earth as dust, ash, cinder or pumice. Most volcanic ash falls to the ground; cemented together by water it forms a rock called volcanic tuff. Depending on how often they erupt, volcanoes may be classified as active, intermittent, dormant, or extinct. The resulting effects can include:
 •Pyroclastic Flows — mixtures of hot gas, ash and other volcanic rocks which travel very quickly down the slope of a volcano. The heat is so great that anyone caught in such a flow will most likely be killed. The speed of the pyroclastic flow is so fast that it cannot be outrun and it is best to evacuate all people living near a volcano that is suspected of producing this kind of flow.
 •Nues Ardentes — literally, "incandescent cloud." One of the most destructive kinds of volcanic eruptions, it occurs when viscous magma erupts under reasonably low pressure, causing a glowing cloud of ash and pumice to be thrown into the air. This mass avalanches back to earth before it can cool off. Made up of a mixture of gas, lava, blocks, ash and pumice, nues ardentes can reach speeds up to 310 mi/hr (500 km/hr).
 •Volcanic Ashes — volcanic rock which is exploded from a vent in fragments less than an inch (2.5 cm) in size. Volcanic ash particles are like small sharp glass particles that damage anything they come across. During heavy rains of ash, buildings may collapse and people and animals may be suffocated.
 • Lahars — mudflows formed by the mixing of volcanic particles and water. The force of a lahar is so great that buildings may be crushed or carried away; those that are left may become partially or completely buried by one or more cement-like layers of rock debris. Since the lahars move so quickly, people caught in their path may drown, be crushed or be asphyxiated. It is best to evacuate people living in the vicinity of a volcano that may produce lahars.
 •Debris Avalanches — debris that is transported away from the slope, due to the instability of the volcano's slope. Debris avalanches usually occur on large, steep volcanoes, and are one of the most hazardous but least common of volcanic dangers. The bigger the avalanche, the greater its speed and the more dangerous it is.
 • Landslides — a gradual, downslope movement of a mass of bedrock. The mixture of debris from a landslide or avalanche with water may produce harmful lahars.
 •Volcanic eruptions can precipitate other natural disasters, such as earthquakes, flash floods, acid rain, fires and tsunamis.

Safety Measures

Anyone living in the vicinity of a volcano should have a disaster supply kit prepared, including a pair of goggles and disposable breathing mask for each member of the family. Of course, it is always advisable to stay away from active volcano sites.

If the volcano erupts:
 •If possible, immediately leave the area.
 •If caught near a stream, beware of mudflows. They can move faster than you can walk or run. Look upstream before crossing a bridge, and do not cross the bridge if a mudflow is approaching.
 •Avoid river valleys and low-lying areas.
 •Protect yourself from falling ash by wearing long-sleeved shirts and long pants. Use goggles and wear eyeglasses instead of contact lenses, and wear a dust mask or hold a damp cloth over your face to help with breathing.
 •Stay away from areas downwind from the volcano. It is best to stay indoors until the ash has settled unless there is a danger of the roof collapsing. Be sure to close doors, windows, and all ventilation in the house (chimney vents, furnaces, air conditioners, fans, and other vents.
 •When the ash has settled, clear it from roofs and rain gutters.
 •Avoid driving, which can stir up volcanic ash that can clog engines, damage moving parts, and stall vehicles. If you have to drive, keep speed down to 35 mi/hr (56 km/hr) or slower.

Some of History's Worst Volcanic Eruptions
 •Crater Lake in Oregon was formed from a high volcano that lost its top after a series of tremendous explosions about 6,600 years ago.
 •Mount Vesuvius, in Italy, has erupted several times. The most devastating of the eruptions occurred in A.D. 79, destroying the cities of Pompeii and Herculaneum.
 •Indonesia's Krakatoa has erupted several times, with the last and most devastating eruption in 1883. The resulting tsunami killed more than 36,000 people in the area of Java and Sumatra. New islands were formed by the huge amount of lava and ash and debris scattered as far away as Madagascar. The sound of the explosion was heard as far away as Perth, Australia (nearly 2000 mi/3100 km), and Rodrigues, near Mauritius (approximately 3000 mi/4800 km).
 •In 1963, Mount Agung in Bali erupted, taking the lives of some 1,100 people.
 •On May 18, 1980, after more than 100 years of dormancy, Mount St. Helens erupted in Washington. The rock debris carried by a lateral blast of Mount St. Helens traveled as fast as 250 mi/hr (402 km/hr). Fifty-eight people were killed and there was a resulting $1.2 billion in damages.
 •The 1992 eruption of Mount Pinatubo in the Philippines Islands caused 342 deaths; more than 250,000 people had to be evacuated. Vast amounts of aerosols were spewed into the stratosphere, forming a global layer of sulfuric acid haze that lasted for several months. Global temperatures dropped by about 0.9 degrees F (0.5 C).

Believe it or not, there are advantages to living near a volcano. Volcanoes provide geothermal resources which are converted into energy. This type of energy is very clean and the resources are nearly inexhaustible.

Moreover, when a volcano erupts it throws out a lot of ash. Although initially this ash is very harmful to the environment, in the long run, the ash layer will turn into extremely fertile soil, rich in minerals.

And tourists flock to volcano sites because the sunsets and views that they create can be breathtakingly beautiful.


Read more: http://www.answers.com/topic/volcano#ixzz1eLwieNfC

pennylane

I havent been able to get on the web cam since lunch time,
can anyone else...whats the latest Jand and Fi x

jand

THE SCIENTIFIC WORK OF GROUP OF THE PEVOLCA MAINTAINS THE ANTICIPATION OF AN EXPECTED MAXIMUM MAGNITUDE IN THE ISLAND OF 4.6

21-11-2011... 14: 32 - Ministry of economy, finance and security

Changes in the signal of tremor may be associated to a collapse of the wall of the volcanic edifice or a change in the rate of emission

The scientific working group of the Plan of Civil protection by volcanic risk (PEVOLCA) has confirmed this morning that in El Hierro stands a seismicity with an expected maximum magnitude of 4.6, taking into account "the analysis of the seismic catalogue of the last twenty days".

In any case, the number of earthquakes has decreased in recent days, as well as their frequency, producing a meaningful record in the early hours of Saturday to Sunday "with a magnitude 3.7 movement".

Scientists confirm that the seismicity occurs in same alignment NNW-SSE, at the end of border, but always at a depth of between 15 and 27 kilometres. The evolution of the eruptive process, therefore, "remains stable, but leaves open the scenario of a possible eruption in the North, which is not, in any case, of imminent."

On the deformation, follows the same pattern of stability than in previous days with regard to horizontal displacement observed in GPS stations. With respect to the vertical displacement GPS in the Gulf stations mostly point towards a slight elevation, while the rest notes a slight collapse.

For its part, the tremor signal experienced a significant change last Thursday, to diminish its intensity sharply, to recover again on Saturday. This phenomenon may be associated "to a collapse of the wall of the volcanic edifice that has formed in the Restinga or a change in the rate of emission". These data may be confirmed by the research vessel 'Ramón Margalef' when you perform the next bathymetry.

The direction of the Special Plan of Civil protection and emergency care by volcanic risk in the autonomous community of Canary Islands # PEVOLCA # reiterates that in the current position of the volcanic light red to La Restinga and yellow for the rest of the island, the population of the island must focus its attention on the messages offered by the competent authorities to which the Scientific Committee assists. Public administrations have devices and means to deal with a modification of the current situation with the communication, at the appropriate time, of precise instructions to the population.

woe10

IF YOU PUT "WHAT IS A VOLCANO" IN GOOGLE, YOU GET 41,000,000 RESULTS


TripleH

quote:
Originally posted by woe10


IF YOU PUT "WHAT IS A VOLCANO" IN GOOGLE, YOU GET 41,000,000 RESULTS






Why bother doing that Woe when we got jand??

jand

There is a lot of upset at the momeent on the island because Avcan posted first about the new mouth/vent and were told to take it off their website.

Apparantly everything has to be sanctioned by Pevolca before it can be posted (and we all know from previous posts how they work !!!)

Copied from Avcan

Ya me voy haciendo una idea: el INVOLCAN anuncia una posible erupción, el PEVOLCA lo contradice y la noticia desaparece. ¿GUERRA ENTRE ORGANISMOS?.¿NO LO DIGAS TÚ PORQUE ME PERTENECE HACERLO YO PORQUE EL QUE MANDA AQUÍ ES MI MENDA?. Y mientras tanto nos dejan con un palmo de narices a nosotros, el pueblo español.¡SINVERGÚENZAAAAAA#8203;AAAAAAAS!


I'm already doing an idea: the INVOLCAN announces a possible eruption, runs counter it to the PEVOLCA and the news disappears. WAR BETWEEN AGENCIES?DO NOT THING TELL YOU BECAUSE I BELONG DO I QUE MANDA HERE IS MY PAEONIUS?. And in the meantime leave us with a span of noses to we, the people Spanish. SINVERGÚENZAAAAAAAAAAAAAS! (Translated by Bing)

 Please, Antonio, they have to remember that we are to do other things besides this forum and to know that it has happened, rogariamos a little patience, still we don't know very well that is what has happened, it seems that you have to channel the information through the PEVOLCA, to avoid the media mess that happened in Tenerife in 2004, so in terms of know something it will know

jand

Woe

I thought this was an easy and interesting explanation for people to read about a Volcano.

Is there really any need for you to post as you do.

If you are not interested why the hell are you still reading!!!

jand

Another comment from a Spanish person.

En fin, me voy a tomar un café y acontar hasta diez, así no se me escapa una barbaridad por la boca!. ¡Vaya suerte que teneis los canarios con los que dirigen todo el tema de EL HIerro!. Como creyente que soy, ¡rezo porque no ocurra nada grave en la isla, porque con estos incompetentes apañaos van los habitantes de El Hierro!


Anyway, I'm going to take a coffee and acontar up to ten, so no escapes me a lot by mouth!. What luck that you have the Canaries that run around the theme of iron!. As a believer I am pray because not happen anything serious on the island, because with these incompetent maybe you go the inhabitants of El Hierro! (Translated by Bing)

jand

Copied from Avcan

they have just given notice of what I do? I shared a post which was "proof" from my private wall. Then I deleted it on my wall and you will have seen that also disappeared here. Because that's what happened. The INVOLCAN published a post and we share but disappeared when they removed. I wanted to tell you that we have been very badly. We thought that we we deserve more confidence but some post seemed very demanding and we already accused unless we know the reason. I believe that we deserve the benefit of the doubt. Having said this, that not me it could be shut, sorry to all for the caused inconvenience (Fernando)
See Translation

jand

Copied From Avcan

Para las personas que no saben la seriedad de este lugar ya tienen claros los motivos, para otras muchas que sí lo sabemos decirles que tienen nuestra confianza. Hay que aprender a esperar y no precipitarse; ya lo dice la canción "las prisas no son buenas".

For people who do not know the seriousness of this place already have clear grounds, for many others who do we tell them that they have our confidence. We must learn to wait and not rush; now it says the song "the hurries are not good". (Translated by Bing)

3 minutes ago · Like.


Jony Fernández
#8206;"Quieren poner a todo el mundo a su servicio, bajo la dirección de personas que no están preparadas. En los organismos públicos hay que entrar por oposición [...] Lo que se pretende ahí es meter a un grupo de gente cuyo único mérito demost...See More



#8206;"They want to put everyone at their service, under the direction of people who are not prepared." Public bodies should enter as opposed [...] Hence the idea is to put a group of people whose only proven merit is that they are very friends of the President of the Cabildo de Tenerife [.]"All the money that had to be given to the other institutions, they are concentrated in that group and that is called in a very simple way: NEPOTISM and corruption". Juan Carlos Carracedo. June 2011. (Translated by Bing)

2 minutes ago · Like


jand

Important update 21/11 – 15:09
Ian Carson did report the following a couple of hours ago  :
 Just spoke to guy from Canaries Geological Institute  back from the Guardia Civil helicopter overflight. New vent today about 300 meters from old  (and the nearest) vent but parallel to and no nearer to coast than the old one. Quite a lot of bubbling at first but has settled to light blue stain as older vent.
 - We expect Guardia Civil / Involcan helicopter images later today

jand

http://geolmag.geoscienceworld.org/content/143/3/257.full

This is very interesting to read.

One persons comment on the above link.

Previous experiments simulating volcano deformation due to gravitational spreading demonstrated that (a) extensional faults have approximately radial orientation if the volcano is ideally cone-shaped [...](b) extensional faults group into a preferred direction if two volcanoes overlap [...]. Because dyke intrusions are oriented perpendicular to the direction of least principal stress, we assume that rift zones will form along a system of extensional faults" [link to geolmag.geoscienceworld.org]

Still reading but this caught my attention. Wouldn't the line of earthquakes from the Southern Bay to the north be considered extensional faults?
(An extensional fault is a fault that vertically thins and horizontally extends portions of the Earth's crust and/or lithosphere - [link to en.wikipedia.org]

Could we be seeing the beginning of the entire island "rifting" in half?

jand

http://212.170.244.196/

This camera is showing the new stain the Guardia Civil ? helicopter has been flying over this about 5 minutes ago.

fifi

Busy today so didnt have a chance to catch up with what is going on. Thanks for the updates jand.

Tweets..


PrensaElHierro Cabildo de El Hierro
This data could be confirmed with a new bathymetry of Ramon Margalef.


IGN: changes in the tremor may be for Wall crumbled the volcano or a change in the emission rate.


Since 17 July 11 745 seismic events were located at # ElHierro.
2 hours ago

Scientists have yet to see a new scenario imminent eruption in the North of # ElHierro.

We observe a slight elevation of the vertical deformation at various stations of the Gulf and the rest of deflation.


Continued seismicity in the north of # ElHierro and maximum likely continue at 4.6 magnitude


The submarine eruption process in the South of # ElHierro is ongoing and has requested further study batrimétricos. # Volcano

Still does not appear a second source of tremor in the North of # ElHierro, confirmed today Maria Jose Blanco of IGN.

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

Raymond Matabosch in his journal is discussing a link between La Palma and El Hierro today. http://www.come4news.com/l-le-volcan-el-hierro-apparition-imminente-du-panache-cyprissoide-672818

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

Canarian Governments news (Translated)http://www.gobcan.es/noticias/index.jsp?module=1&page=nota.htm&id=145209

Press Releases

 PEVOLCA anticipates maximum magnitude of 4.6 on the Island

21/11/2011 ... 14:32 - Ministry of Economy, Finance and Security

Changes in the tremor signal can be associated with a collapse of the wall of the volcano or a change in the emission rate

The scientific working group of the Civil Protection Plan for Volcanic Risk (PEVOLCA) confirmed this morning that in El Hierro is maintained with a maximum magnitude seismicity expected 4.6, taking into account "the analysis of the seismic catalog of the last twenty days ".

In any case, the number of earthquakes has decreased in recent days, and frequency, producing a significant record in the early hours of Saturday to Sunday "with a wave of magnitude 3.7".

Scientists confirm that the seismicity occurs in the same alignment NNW SSE, in the municipality of Frontera, but always at a depth of between 15 and 27 kilometers. The evolution of the eruptive process, therefore, "remains stable, but leaves open the scenario of a possible eruption in the North, who has not, in any case, the character imminent."

As for the deformation, follows the same pattern of stability in recent days regarding the horizontal displacements observed at GPS stations. For the movement in the vertical GPS stations in the Gulf aimed, mainly, to a slight elevation, while the rest is a slight sag.

For its part, the tremor signal underwent a significant change on Thursday, dropping sharply in intensity, to pick up again on Saturday. This phenomenon could be linked "to collapse the wall of the volcano that has formed in La Restinga or a change in the emission rate." These data can be confirmed by the research vessel 'Ramon Margalef' when making the next bathymetry.

The Directorate of Civil Protection Special Plan and Emergency Response for Volcanic Risk in the Canary Islands (PEVOLCA) reiterates that the current position of the light red volcanic La Restinga and yellow for the rest of the island, the population of the island has to focus on the messages offered by the competent authorities which assists the Scientific Committee. Public authorities have the devices and means to cope with a change in the current situation with the media, at the right time, precise instructions for the population.

fifi

PresiCan GobCan Presidency (Twitter)
# ElHierro The PEVOLCA confirmed after the helicopter reconnaissance flight of the GES that there is a new eruptive focus in La Restinga
5 minutes ago Favorite

jand


jand

Copied From Avcan
I would like to comment personally, I would like to understand the different situations in which we find each to give information. For us, for AVCAN, and Association of citizens is very easy for us, we are free to give any information. However, for simple wisdom and responsibility, we prefer contrast everything thing that reaches us. For the INVOLCAN, just as for any other of the groups directly involved in the management of the crisis, things are even more difficult. You are not enough to confirm this with their own eyes but, moreover, should follow the protocols that marks the PEVOLCA and inform in an already established line. I am absolutely convinced that if the INVOLCAN publishes a news story is because they are convinced of it and hope that overcome the procedures to which they are forced, they will do the impossible so that such information reaches the citizens. I prefer to wait before judging. Greetings to all and thank you to all those who contribute their bit to make this wall serves to something. (Fernando)
13 minutes ago · Like · 17