El Hierro

[jand]

Avcan FB Copied and Translated.

Note 414 AVCAN - earthquake activity - VOLCANIC - island of HIERRO - 10 January 2012-10: 00 h peninsula - earthquake and volcanic activity continues moderate, with some seismicity weaker yesterday located NNW-SSE axis, as well as some events more detected weak. Continued volcanic tremor signal in the eruptive zone of la Restinga, with cycles of about 12 hours, but with an amplitude that in General bieng lines up. Noticed any explosion, possibly hidromagmatica output pipe. Yesterday all day and night were smoldering floating pyroclastic in webcams. The magnitude between 2.0 and 1.3. New earthquakes 2. Depth 1 and 13 km yesterday 1. Yesterday 5. Today will be 0. In total van 11982 earthquakes located in El Hierro by IGN from 9: 00 pm of the day 19 July 2011

[jand]

Update 11/01 – 06:59 UTC
 - Harmonic tremor medium with almost no variations for more than 30 hours
 - A lot of earthquakes this morning ! 6 in only 5 hours.
 00:09:27     Depth 13 km         M 1.1     W EL PINAR.IHI
 00:52:49     Depth 14 km         M 1.5     SW FRONTERA.IHI
 02:39:31     Depth 14 km         M 1.7     SW EL PINAR.IHI
 03:07:01     Depth 29 km         M 2.4     W FRONTERA.IHI
 04:01:01     Depth 13 km         M 1.2     SW FRONTERA.IHI
 04:44:15     Depth 6 km         M 0.8     W FRONTERA.IHI

[jand]

Update 10/01 – 23:55 UTC
 - 2 earthquakes with only 27 seconds difference. Magnitudes of 1.0 and 1.6 at a depth of 14 km and 13 km.
 - Harmonic tremor medium with only limited variations all day long
 - Ramon Margalef was still cruising the stain for bathymetry purposes at late night

[jand]

http://www.02.ign.es/ign/head/volcaSenalesAnterioresDia.do?nombreFichero=CHIE_2012-01-11&estacion=CHIE&Anio=2012&Mes=01&Dia=11

Harmonics still showing steady movement for today.

[jand]

Avcan FB Copied

Note 415 AVCAN - earthquake activity - VOLCANIC - island of HIERRO - 11 January 2012-11: 00 pm peninsula - earthquake and volcanic activity continues moderate, with some moderate seismicity located yesterday and today all over the island, from border to Sabinosa, and then in the NNW-SSE axis towards the eruptive zone of la Restinga, passing through the calm sea. Continued volcanic tremor signal in the eruptive zone of la Restinga, with cycles of about 12 hours, but with an amplitude that in General bieng lines up. Yesterday all day and night were smoldering floating pyroclastic in webcams. The magnitude between 2.4 and 0.8. New earthquakes 8. Depth between 13 and 14 (and one under border to 5.9km and the other under Sabinosa to 28.9km.) 5. The day before yesterday. Yesterday 2. Today are 6. In total van 11990 earthquakes located in El Hierro by IGN from 9: 00 pm of the day 19 July 2011.

[jand]

Avcan FB Copied

11-01-2012... 13: 17 - Ministry of economy, finance and security


It reached a magnitude of 1.6 on the Richter scale


The National Geographic Institute (IGN) has confirmed to the direction of the Civil Protection Plan by volcanic risk (PEVOLCA) one of the two earthquakes located yesterday in the calm sea was felt by the population. This movement of 1.6 magnitude, occurred at a depth between 13 and 14 kilometres at 21: 46 hours; While the second registered Quake did not exceed 1.0 on the Richter scale. In total, 11952 events have been located since on July 19, 2011.


In relation to the amplitude of the signal of the tremor, scientists confirm that he has remained fairly steady during the day with a slight gradual increase which ended at noon.


On the deformation, they note that the monitoring stations show a stable pattern both the vertical and two horizontal components. In the stations of the South of the island continues the trend of deflation.


Finally note that the report of the Mission of SASEMAR for yesterday afternoon, on the spot on the surface of the sea is described in a defined focus of circular nature of intense brown hue, which featured slight activity and presence of fragments of lava. "The variation of temperature of the water in the area of focus was 20.9 ° c at 19.4 ° C in swell", source: ' http://www#gobiernodecanarias#org/noticias/index#jsp?module=1 & page = note # htm & id = 146754'

[Elite of the forum]

Jand you out there no posting for 12hrs 23 mins ,missing you lots XXXXXXX

[jand]

Avcan FB

Wednesday, January 11, 2012 - Canary
Ministry of economy, finance and security


IGN confirms that one of the two earthquakes recorded in the calm sea was felt by the population


• It reached a magnitude of 1.6 on the Richter scale


The National Geographic Institute (IGN) has confirmed to the direction of the Civil Protection Plan by volcanic risk (PEVOLCA) one of the two earthquakes located yesterday in the calm sea was felt by the population. This movement of 1.6 magnitude, occurred at a depth between 13 and 14 kilometres at 21: 46 hours; While the second registered Quake did not exceed 1.0 on the Richter scale. In total, 11952 events have been located since on July 19, 2011.


In relation to the amplitude of the signal of the tremor, scientists confirm that he has remained fairly steady during the day with a slight gradual increase which ended at noon.


On the deformation, they note that the monitoring stations show a stable pattern both the vertical and two horizontal components. In the stations of the South of the island continues the trend of deflation.

Finally note that the report of the Mission of SASEMAR for yesterday afternoon, on the spot on the surface of the sea is described in a defined focus of circular nature of intense brown hue, which featured slight activity and presence of fragments of lava. The variation of temperature of the water in the area of focus was 20.9 ° c at 19.4 ° C in swell

[jand]

Avcan FB translated

I hang up a video obtained by Volcano Discovery on the new island arose in the Red Sea the past Christmas season. On this website is next to the link as follows:
"On youtube now a dramatic video of a recent volcanic eruption in the Red Sea in the Zubayr group has emerged to the West of Yemen." The video filmed by a military helicopter and shows the island baby even in the highly explosive phase, in which magma mixing in contact with sea water and explosives leads to huge clouds of ash and steam. "Unfortunately, is not specified the date of the video, probably will be around December 22-23 have been included."


Makes me think about my wish to see a new island adjacent to El Hierro, both for my enjoyment and for the benefit of El Hierro with tourism. A new island, as you see in these images, with all distances and possible differences, would be accompanied by a few very important effects on La Restinga, consequences which I do not wish for anyone. Therefore I think that it is better that "our" Las Calmas volcano is there underneath, which grow and sleep without all the negative effects of an eruption of this type on El Hierro: explosivity, interaction water magma, ash cloud,... Posts so had chosen a Teneguia in the area of the lighthouse of Orchilla, no nearby population without affecting the fauna of the calm sea. But this is what we have and beware of what you want because it can be met. (Humberto)


http://www.youtube.com/watch?feature=player_embedded&v=YoMLNEJC-Nk

[jand]

In the evolution of the depth of the earthquakes in iron since October 1, 2011, you can see the end of the first swarm and shallow earthquakes that preceded the opening of the point eruptive in the area of la Restinga, then it is the second swarm from late October to early December and then is for.


The truth is that once finished the second swarm from mid-December you can see Seismicity in the area of the duct... but this seismicity seems to have a tendency to decrease its depth, although it is too early for any interpretation or meaning of this graph.

Also seen more shallow earthquakes by dispersion of efforts. and as efforts are going up. Although there are few data, one raised scenario that occurs to me to be able to explain these data is the possibility that the magma conduit in its flow progresses slowly towards more shallow levels, so it will have to follow the evolution of this graph to verify this fact or deny it.(Henry)

[jand]

Volcano cafe

Involcan published the datas and graphic of Co2 difusse emission, yesterday.
 http://www.facebook.com/photo.php?fbid=324956150871117&set=a.174701045896629.39574.134042953295772&type=1&theater

When we saw the last graphic at december 18th it seems the values might fall to normal values in 3 weeks. Looking this last graphic we see stability in this value. And it is very dificult to predict how long will be this event.
 Newby says if now the eruptive activity is higher as the spectrogram shows why we can not see high activity at the sea surface?
 Ok, newby I think this is the big mistake of most of us (not your case). We can jump if we saw some activity on the sea surface and we can be bored althougt the activity underwater was bigger but we can not see on surface...
 For me the explanation is all we see on surface mostly is dued thanks by GASES not by volcanic building growth.
 Perhaps in a moment when the material is low and the gases higher (big ratio gases/magma) then is when we see activity on surface (lava ballons and so).
 Perhaps in this moment whit a lower ratio gases/material gases are being filled in more material.
 Now in this moment these materials are flowing down the volcanic building or making it.

[jand]

http://www.youtube.com/watch?v=S5UIOBiZdmU

Press conference with the Japenese Scientist on El Hierro at the moment.

[appy ammer]

jand do you know if el ierro has a waterpark and when its opening times are?

[jand]

Vocano Cafe Copied

Thank you Birgit for those amazing photos.
 I am interested in this particular one
 http://farm8.staticflickr.com/7019/6680014193_07c7d239d0_m.jpg
 I can see what looks like fossils. They look like tiny parts of crinoids but if they of biological origin they could be primitive coral polyps. Is this is so then this is material from the jurassic layers. Please tell me if I am way off course here.

Reply

schteve says:

 January 11, 2012 at 22:36

I saw that too, like an upside down mushroom. Intuition tells me it's not purely geological...

Reply

Birgit says:

 January 11, 2012 at 22:44

Yes it looks like a mushroom. I think it is material that tried to cristallize. This was taken with the blackish part of the sample. Lurking said that sediment was molten and wrapped up with new material. I thought that maybe the white part was sediment and the black the new things.... So i dont know but i dont think it is organic material.
 But we never figured out what this http://www.flickr.com/photos/arselectronicacenter/4658893987/in/set-72157624096900675
 was and that sure looks like a 7
 http://www.flickr.com/photos/arselectronicacenter/4711578214/in/set-72157624176589549

Reply

GeoLurking says:

 January 12, 2012 at 05:03

Sediment is not necessarily organic material. In this case, definitely not. Sediment tends to have a high silica content in the form of sand/fine sand. I think that this is the source of the relatively clean and white looking interior material.

Reply

Peter Cobbold says:

 January 11, 2012 at 22:52

Its an SEM photo and from the scale the 'crinoid' is only about 5um ( one fifth of one thousandth of an inch ) diameter.

Reply


Peter Cobbold says:

 January 11, 2012 at 23:26


- at a guess, maybe a small pollen grain or small diatom. Any palynologist out there?

Reply


Newby says:

 January 11, 2012 at 23:38


Yes, it seems to me that is the biggest problem, remembering the scale. It sure looks like the pieces of crinoid that I have collected at Charmouth close to Lyme Regis UK, part of what is now known as the Jurassic Coast because of the incredible amount of fossils which have come from the crumbling cliffs. However at that scale it is almost certain not to be what it looks like. As for diatoms, ah what a wonder they are!!


Birgit says:

 January 12, 2012 at 00:03


@newbie
 I have looked at diatoms often with the SEM. And we found a whole diatom inside the shell of a mussel. This does not look like a diatom.

[jand]

Avcan Fb copied and translated.

Note 416 AVCAN - earthquake activity - VOLCANIC - island of HIERRO - 12 January 2012-10: 00 h peninsula - earthquake and volcanic activity continues moderate, with some seismicity located yesterday in the interior of the island, and today some 25 km to the North of the island of el Hierro in direction to the island of la Palma. Continues the signal of volcanic tremor in the eruptive zone of la Restinga, stays more or less with an amplitude which in general terms this fall and is more unstable and some explosions. Yesterday all day and night were smoldering floating pyroclastic in webcams. The magnitude between 1.9 and 1.5. New earthquakes 2. Depth between 10 and 11 km. Anteayer 2. Yesterday 7. Today will be 1. In total van 11992 earthquakes located in El Hierro by IGN from 9: 00 pm of the day 19 July 2011

[jand]

Carlos says:

 January 12, 2012 at 17:18


Published in the IEO ´s facebook (15 minutes ago)

Above all, it sent an oceanographic vessel, the Ramon Margalef, to conduct a study of the morphometry of the volcano and bathymetric data. Achieved spectacular images that guided much about the location and depth of eruptive mouth and have been the first in the world that are taken from a submarine eruption in its infancy. Days later he returned to take pictures showing the morphological evolution of the volcano, the cone emitter increasing its height last week, do not know anything else, except the assumption that there have been landslides in the upper part of the crater and occasional bursts . The arrival of the ship Sarmiento de Gamboa helped define the bathymetry but were not images. (Written by D. Jose Luis Barrera, a geologist). Certainly the bathymetry of D. Juan Acosta Yepes were amazing, we did live to all science with awe, admiration and enthusiasm and in real time. Leaving the bar and the Spanish scientist IEO at the top. And avoided making information, rumor, speculation and fear. I call for a return to the situation on 13 November. The current policy of not driving is the only thing to destroy the love for the dissemination of science and the lack of information leads to rumors, speculations and fears. I appeal to all scientists who love science and dissemination of science to end the absurd administrative situation we are living after magnificent bathymetry of D. Juan Acosta Yepes made #8203;#8203;during the 12th and 13th November and published the same day November 13 despite the interference.

Yesterday the sentence of Ask and you will receive worked... I hope it works today too.

[jand]

Carlos says:

 January 12, 2012 at 19:19

01/12/2012 ... 14:43 – Ministry of Economy, Finance and Security

The volcanological Institute of the Canaries (Involcan) has advised the direction of the Civil Protection Special Plan for Volcanic Risk in the Canary Islands (PEVOLCA) continues a downward trend of the diffuse emission of carbon dioxide (CO2) to the atmosphere by the volcano island of El Hierro.

This trend started in late November, when it came to achieving the 2398 ± 115 tons per day, until today, when it has been recorded an emission rate of 664 ± 24 tonnes per day. It should be noted that these emission rates do not refer to the emission of carbon dioxide (CO2) that occurs through the underwater eruption of El Hierro, but the amount of carbon dioxide (CO2) emitted to the atmosphere through the surface environment (soil-air interface) that makes up the 278 km2 area of #8203;#8203;the Island Meridian.

To obtain these results are carried out scientific surveys, involving hundreds of diffuse flux measurements of carbon dioxide (CO2) distributed across the surface of the island of El Hierro, in order to investigate the spatiotemporal variations of the diffuse emission of carbon dioxide (CO2) into the atmosphere by the volcano island of El Hierro.

Other scientific reasons that support the interest of these works are monitoring the role of gas as the driving force of volcanic eruptions, as carbon dioxide (CO2) is the second major component of volcanic gases after steam water, and its low solubility in molten silicitados (magma) favor their escape from deep volcanic systems.

Seismicity

The National Geographic Instuto has confirmed that yesterday was locallizacon seven earthquakes, 3 of them equal to or greater than 1.5 in magnitude. The hours recorded at 3:07 am, in the town of Frontera, was felt by the population with an intensity of II and reached 2.4 on the Richter scale.

Reply

Carlos says:

 January 12, 2012 at 19:24

The headlines of the Canaries Goverment puts in diffuse emissions of CO2, even if true, it is still misleading ... While it is true that there has been a decline in CO2 emissions is also true that the decline that has occurred since December 18 so far is very small ... The incumbent would be more descriptive if to say co2 diffuse emission point to a stability and maintenance of the eruption. If the graph December 18 pointed to a downward spiral, the current plot points to maintain the current values #8203;#8203;and the decrease can be extended much further in time. He still sees a feedback between eruption microearthquakes and earthquakes and also a quake like the one we saw recently at 29 km depth. The headline gives IGN lower levels or final, it would still be true if the time scale is long-term take. But perhaps the best and most descriptive title short to medium term would be stability in terms of its significance as CONTINUITY ...
 http://www.facebook.com/photo.php?fbid=324956150871117&set=a.174701045896629.39574.134042953295772&type=1&theater

Reply

Carl le Strange says:

 January 12, 2012 at 19:47

CO2 is not the interesting gas...
 SO2 is...

Reply

Carlos says:

 January 12, 2012 at 19:54

The argument of Involcan to predict volcanoe´s patterns is like say above:

"Other scientific reasons that support the interest of these works are monitoring the role of gas as the driving force of volcanic eruptions, as carbon dioxide (CO2) is the second major component of volcanic gases after steam water, and its low solubility in molten silicitados (magma) favor their escape from deep volcanic systems."

The monitoring of so2 emissions was given to us a few days ago. http://www.facebook.com/photo.php?fbid=323272081039524&set=a.174701045896629.39574.134042953295772&type=1&theater

[Florence]

OK.. hands up.  Who actually reads these cut and paste jobs.  Who understands them?  Anyone?

[jand]

The latest earthquakes seem to be forming a circle?

Avan FB Copied

Goodnight, Echenle a look at this map of the seismicity of the last week and tell me that believe, emphasize like curiosity that earthquakes are grouped in a circle and the more strong in the outer zone of the circle. (Henry)

EARTHQUAKES 12TH JAN. -Blue clear (1)
DAY 06 earthquakes on Jan 11. -Yellow (24)

That is what tells us this?? good question if... go beyond...

[jand]

Avcan FB Copied

Eduardo my impression is very similar, in depth this entering more magma, little viscous and very fluid, which goes by la Restinga, by what I think that now there is formed a network of small ditches side that it is opened from the main NNW-SSE from the Gulf area and slightly pressurized and that explicaria all the microsismicidad and not have to be very largejust a few centimeters to step spread at the moment more sideways than up, but gradually all are andara, by what would not be disposable opening another eruptive mouth elsewhere if this phenomenon continues to progress, although to confirm what we need more tests, such as a gravimetria or a magnetometria, more earthquakes and more time

[jand]

Avcan FB Copied and translated

But, if it begins to spread in the horizontal – and basalt however hard that is also is fragile – the subglacial would begin to appear in much of the island is not it? That worries me, because if we have dikes pushing or a considerable diapir pressing looking for holes...
 See Translation

5 hours ago · Like ·

Volcanic Canary Islands (AVCAN) good news asked Bernabe... but this is the towards in the PEVOLCA I do have a diapir or magma chamber or a network of ditches filled with magma pushing?... as I've already said I tend towards the second option is what has generated around this post by the map, that of a network of dams interconnected to medium pressure pushing, fed from below (deep earthquakes in the Gulf > 20 km) from the mantle and time extending laterally (earthquakes side perimeter) more fuertes(10-15km) and gradually rising (earthquakes more internal weak not someros(10-14km)... when already can not laterally, ira upwards so the seismicity would have to go up and being more shallow daily for verify this hypothesis. ())(Henry)

Of course we hope that those of the Emergency Plan to read, because if this becomes more than a hypothesis we would be in a rather harsh situation, at the end and after esllos who decide what is dangerous and what not, right? Even so, if we are at the beginning of a long eruption also they should start to tell people who lives in La Restinga that sooner or later they will have to take the luggage, unless he tapone the mouth and the lava can extricate another deeper site and does not appear after three months as we carry will be the case.

[TripleH]

Morning jand. Only 4.5 hours sleep? Do you work nightshifts?

[Elite of the forum]

Jand do you think all these natural disasters are linked to the coming,the rapture are we all going to be taken or am i just paranoid??

ps can you tell me if my house is earthquake proof???

Thank you Roar

[Paddster]

Even Fi's give up on 'em....

[jand]

Volcano Cafe Copied

I don't see the circle. But it could be my misinterpretation. I do see a cluster. I have also seen this clustering along a loose path from the deep seismic area to Bob. (La Restinga area).

My interpretations pretty much matches what is in Judith's postings... but there are one of two possibilities at play. One, is that as feared in the postings, magma is intruding into fresh fissure areas "ditches" and is forming dike/sill pathways. I use those terms because that is what they will be when they cool... unless they erupt first.

The other possibility is that we are seeing a relaxation of the feed system to Bob, and the seismic signals are the crust relaxing due to lower pressure. The problem is that the tremor signal seems to be quite healthy. Additionally, a 0.59 Hz signal can be seen on a lot of stations that previously have only seen the larger transients from CHIE. (CFUE and EOSO for example) Generally, the only stations that have reliably detected tremor were EHIG and EGOM, on the two closest islands. But Grand Canaria and Furteventura? Those are... quite a distance away.

This has me perplexed.

Why would the signal, which until now has not shown up that far away, now be a regular feature? This could mean that the 0.59 Hz signal is from a deeper level, and more likely to travel that distance. If so, it would likely be degassing from the deep layers. I don't have good data on what pressure that the gases generally come out of solution in deep magma. My guess is that once the magma reaches that lower pressure area, it will cross some critical point and the gas will exsolve at a pretty quick rate at that level. That could be the source of the 0.59 Hz tremor.

A real geologist needs to look at these possibilities and give us a hint as to what is going on. I am pretty much at the limit of what I can offer for an explanation.

[jand]

Morning TripleH

Please look at the time difference between my posts its actually over nine hours not 4.5 as you say !!

[Elite of the forum]

you not speaking jand[][][] would really like to know your thoughts on these natural phenomenons and are they linked to the rapture after all a lot of people will be all of a panic about it,and worried about negative equity that may arise on their properties in Fuerte

look forward to you thoughts lots of kisses roar [:X][:X][:X]

[jand]

Roar

I am not a scientist or geologist or a person living on El Hierro.

I only post facts that are happening daily on El Hierro and its up to each of us to read and make up our own minds .

I can only as anyone else look and read what is happening daily on El Hierro and the surrounding islands.

Things are changing daily and thats why there are so many posts of interesting facts photos and graphs to look at and read.

[jand]

There seems to be movements again being felt on the island copied from Avcan FB.

Dear Henry, yesterday not tire and by the particular concern I have, I allowed not to participate but figure makes the hairs on end, only to say the least. The microsismos are feeling both the North and Valverde, increasingly are more people that so discussed me in the street. By tell you something, it does only about 3 or 4 minutes I felt like a shaking up the mascot that is placed on top of the Tower of the PC was looking at the window.
See Translation
40 minutes ago · Like · 3
Maite Reaper He went to see the tremor and appears between the 7 h. and h. 8 EU there has been something....And I agree with you Victor to see how going today....
See Translation

31 minutes ago · Like

Dolores Batista Gutierrez Buenos days Victor, taking into account what we learned last night... "I don't like",...

[TripleH]

quote:Originally posted by jand

Morning TripleH

Please look at the time difference between my posts its actually over nine hours not 4.5 as you say !!

Ooops, sorry jand. I took the time from Florences post.