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El Hierro

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

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jand

Lava balloon from this morning.


jand

Stain and jacuzzi area taking this morning so close to to the port entrance.


jand

Smoking lava stone taken this morning.


jand

http://212.170.244.196/

The stain is glowing brightly again on the webcam.


jand

Avcan FB.

Buenos días, continuan la erupción, y se ve saliendo humareda en la mancha
17 minutes ago · Like

Good morning, continue to the eruption, and is seen leaving smoke in la mancha
 17 minutes ago · Like

Reply

jand


jand

earthquake-report.

Update 22/01 – 07:56 UTC
 - No harmonic tremor this morning after a night with great changes from minor to almost max. and minor again. The current minor HT came certainly after a vent collapse
 - strong Jacuzzi degassing
 - eruption webcamera working again
 -A total of 5 earthquakes yesterday. The magma is still pushing to find his way to the surface
 - NO earthquakes so far today

jand

Today´s interview to Mr Santana, chief of civil defense at Canary islands, and the chief of the watching for Bob.

http://www.diariodeavisos.com/2012/01/22/actualidad/santana-%E2%80%9Cel-pevolca-solo-preveia-erupciones-en-tierra%E2%80%9D/

 Translated.



TINERFE FUMERO | Santa Cruz de Tenerife


He is a protagonist as undisputed as unexpected in Canary Islands politics today. The eruptive phenomenon of El Hierro has turned its face and its talk paused in popular for public opinion in the Islands. Despite having taken very committed decisions amid sour polemics, his image comes closer because it has permeated their message that, in the absence of scientific certainty, the best thing is to prevent. Now that the eruption has decreased in intensity, the director-general of security and emergencies of the Government of the Canary Islands Juan Manuel Santana, receives notices journal in his Office at La Esperanza to reflect, among other things, about what happened on the island of the Meridian.


-At what stage is the eruption in the calm sea?


"Scientists say that we are in a stationary phase". The rest of signs ranging associated with the rash appear to have sent, whether deformations, already the emission of carbon dioxide, already asociada... seismicity "We were alerted at the beginning that would come to this stage, and this has been."


-May be understood that the eruption has entered its final phase? Here is it completed?


"We do not know." Little more than one week ago he was visiting the Islands, invited by Involcan, an adviser to the Japanese Government in the area of volcanism, with extensive experience in underwater volcanoes, and explained to us that these phenomena can last from hours to years. It will depend on the amount of magma in the Fund and if still has or not. "They are scientists who will have to study it and tell us if it is happening or not."


-How does this circumstance to the safety device?


"The eruption is still fully monitored and we are in contact with scientists twenty-four hours if there are any changes." It is likely that, since there is some kind of risk, return to civil protection measures. "Let us remember that it follows the red light only in the maritime exclusion zone, and the yellow for the rest."


-His mission had no reliable record given that the previous eruption dates back 40 years...


"It is clear that current experience is very valuable, because forty years ago the population learned of seismicity because the bells began to sound alone." Even real measures of protection, to the point that even a person died. The world has changed, and security has changed for the better. "We are working with protection schemes, which are carried out according to agreed international standards."


- But even that plan, can't be roles.


"It is true." We have had the opportunity to bring to reality what was planned and see if he was consistent. "And, of course that Yes, there are issues that have been detected and must be improved".


-What have we learned to improve these plans?


"The Pevolca was a plan for an eruption on Earth." What happened to not contemplated. Also associated seismic risk wasn't well profiling, to the point where we had to take measures of Pesican [Special Plan of Civil protection and emergency care for seismic risk in the Canary Islands]. Also, the Declaration of the alerts will be be amended on the basis of the real risk for the population. Now, if there are eruption there is red light, but we have seen that it does not necessarily why have risk to the population. Themes for the coordination of the committees, I believe that it has worked well in General. This pre-planning already mandated tasks and duties to certain organs. "In general it has worked, but then it is normal that there are discrepancies in the connection".


-Has been lacking people?


"I think not, but I insist that it is normal to occur the debate because at the end and the place it is a phenomenon to study." As it stands, the standard is clear with regard to the National Geographic Institute. And then the Pevolca provided for the presence of scientists from other institutions such as the Cabildo de Tenerife. But also had with others who were invited to join. It must be borne in mind that the Pevolca is a plan for civil protection and the Scientific Committee is aimed at advice for civil protection measures are adequate. It is not a body of scientific debate, which must occur before or in parallel, but not in the Pevolca. It is not its function. Scientifically, it is a notable topic and everyone likes to investigate, it is normal that all specialist in volcanology in Spain intends to participate. "And welcome anyone who can contribute something, but when it comes to civil protection can not be wasting our time".



-There was much discussion among scientists? It did lack remind you that it took decisions to protect the population?


"In general, these scientists had their discussions and occasionally their discrepancies, p"

jand

Carl le Strange says:

 January 22, 2012 at 17:11


Yes, Bob is really going at it today. He is trying to surface as soon as possible.
 I actualy would not be surprised if he has passed the 100m mark. One should remember that the really high activity period started after the Ramon Margalef mapping.

Reply


Newby says:

 January 22, 2012 at 17:13


Also there seem to be some very large waves on the eruption area that I never saw before.

Reply


Carl le Strange says:

 January 22, 2012 at 17:16


Seems like Bob is celebrating with the largest eruptive phase ever. This is an order of magnitude larger than I have seen. The best image was when the camera was zoomed out so that the port showed, and still it the stain was huge. When it was zoomed out I saw hundreds of steming pyroclasts.
 And those churning waves, like bow-wake.
 This is rocking.

jand

Update 22/01 – 17:08 UTC
 - Again stronger and stronger activity of a wide jacuzzi with smoking lava balloons as a reader said it. Will it arrive at Surtseyan level ? We will see but the least we can say is that the volcano is not giving up soon.
 - a lot of hydromagmatic action at the moment, which explains the forceful jacuzzi.


Update 22/01 – 18:39 UTC
 - still SLS Lava balloons coming up now and then. Mini fireworks maybe in the making tonight. We would of course love the fact thet the eruption webcam would be zoomed on the vent, but maybe we ask to much from a webcam operator who does not seem to understand what it all a bout.
 - Joke Volta images from earlier today. Many pictures from the stain and for the eventual second vent. She made a study of it but as the stirring is not continuous, it is hard to determine what the exact location is. Same for us with the continuously moving webcam !?!

jand

OT but amazing video of the Aurora last night in Norway.

http://vimeo.com/35461012


jand

This is the solar absorption chart for today apparantly over the last couple of days there has been a big surge.Whether it has anything to do whats happening on earth at the moment is being discussed.


jand


jand

Lots of movements on the graph this morning something peaked at 0815?


jand

http://212.170.244.196/

Lots of activity on the webcam this morning.

Lots of seagulls flying over the stain could be because of more dead fish?

jand

Update 23/01 -11:57 UTC
 As we see a more and more active jacuzzi area, we can start thinking of the new phase soon, the Surtseyan phase (when, is depending on the vent activity and can be from hours to weeks if the eruption continues like it goes now).
 We want to stress however that based on the just happened Red Sea eruption, the distance from the vent to the coast would be safe enough to not damage La Restinga or any other part of the island. A Surtseyan phase will go normally gradually and with all the scientists aboard, people will have no risk at all.
 Additionally IGN or INVOLCAN / ITER have not yet measured high concentrations of the typical eruption gases as yet)   It would not surprise us to see it happening soon as the vent depth is reaching the point where the superheated steam pressure from below (magma (1100°C) /water interaction) can become bigger than the water column above it.
 We have written it before, but it maybe good the repeat the Wikipedia description of the Surtseyan eruption : A Surtseyan eruption (or hydrovolcanic) is a type of volcanic eruption caused by shallow-water interactions between water and lava, named so after its most famous example, the eruption and formation of the island of Surtsey off the coast of Iceland in 1963. Surtseyan eruptions are the "wet" equivalent of ground-based Strombolian eruptions, but because of where they are taking place, they are more explosive (ER read : steam and ash columns). This is because as water is heated by lava, it flashes in steam and expands violently, fragmenting the magma it is in contact with into fine-grained ash.
 - Joke has just reported (you may have seen it on the webcam) that the Guardia Civil /Involcan helicopter was hanging close to the vent measuring gases and temperatures.
 - On Saturday evening, the Sasemar flight has reported that the temperature difference in between the Jacuzzi waters and the rest of the ocean was "only" 0.7 °C (19.7 vs 19.0).




Update 23/01 -10:02 UTC
 - Harmonic tremor is very unstable but we have the feeling that more surface jacuzzi is taking place the last couple of days. It is an ever changing pattern of activity. Joke who is following this eruption since we started reporting in September is still amazed about what is happening. Being an artist, she sees the changing patterns and the ever changing colors as pieces of nature art. So do we (and probably also you).

jand

Photo taken today.


jand


jand


jand


jand

http://apod.nasa.gov/apod/astropix.html

Fascinating picture of the constellations over Mount Tiede.

jand

Note 427 AVCAN - earthquake activity - VOLCANIC - island of HIERRO - 22 January 2012-12: 30 pm peninsula - earthquake and volcanic activity continues moderate, one in the area of peaks to the East of the Tanganasoga, two in the Julan and another in the llanillos, also with some detected, but located not seismicity.


Continues the signal of tremor volcanic eruptive of la Restinga area, and it seems that it follows cycles d.. .e approximately 12-18 h coinciding with the high water and low tide so to raise and lower the tide, there was variation in the pressure of water enters the canal water and becomes very unstable, with strong explosions hidromagmaticas, making mince the ejected material and more stable in the low tide in where emerging balloons of lava or floating pyroclastic steaming to the surface. The 20 day high tremor coincided with the low tide, 21 (yesterday), change and the same as yesterday high tremor coincided with the high tides broadly, has today become to change and has coincided with the low tide, the next serious high tremor for next low tide at 7: 00 p.m.... cannot be not so simple


The magnitude of earthquakes located oscillates between 1.6 and 0.3. New earthquakes 6. Ms 12, 13, 14, 15, 15 and 16 km. yesterday 5. Yesterday (4). Today van 2. In total van 12022 earthquakes located in El Hierro by IGN from 9: 00 pm of the day 19 July 2011 (Henry).

jand

http://www.youtube.com/watch?v=_VgCL0rSO-E&feature=player_embedded

Video taken yesterday showing the two new vents and the gas emmision point.

jand

Update 24/01 – 08:23 UTC
 - What a strange situation again this morning. I very visible jacuzzi but probably mainly gas as the HT is almost completely gone.
 - 2 earthquakes since midnight UTC. The first one being a 0.8 magnitude at a depth of 13 km at 02:49 here, the second a 1.0 magnitude at a depth of 13 km at 03:39 here
 - as long as the earthquakes keep coming, the eruption cannot be called as stopped

jand

Update 24/01 – 11:06 UTC
 - With a minor harmonic tremor gradually picking up, suddenly a big quantity of lava balloons are surfacing. Once again a fascinating event. A big thank you at Monika for alerting us.
 - On Saturday the IGN / Savamar Adhara crew has been measuring the temperature at the inside of the lava balloons : it was 426 °C !, enough to ignite volcanic gases when they are breaking apart and are mixed with oxygen.

Update 24/01 – 18:26 UTC
 - This image Joke Volta photographed this morning is a picture who says it all. If you have an apartment in La Restinga you may not be sleeping well tonight, however, the zoom does loose the proportional distance from the vent to La Restinga.
 - The second picture shows clearly that the water in the vent is NOT boiling as some say here and there. The many smoking lava balloons are so close to each other that the webcam gives a false impression.
 If you click on one of of the pictures you will see them all.




jand

Mw 5.0

Region

NORTHERN ITALY

Date time

2012-01-25 08:06:36.0 UTC

Location

44.91 N ; 10.51 E

Depth

10 km

Distances
19 km NE Parma (pop 176,806 ; local time 09:06:36.0 2012-01-25)
3 km S Viadana (pop 17,879 ; local time 09:06:36.0 2012-01-25)
1 km NW Brescello (pop 5,039 ; local time 09:06:36.0 2012-01-25