Vulkaanuitbarsting bij Canarische Eilanden #5

twitter:

teideano twitterde op woensdag 27-03-2013 om 16:28:56 OOopssss. Landslides coming...... #geology #volcano http://t.co/Ko7hMWe42t reageer retweet

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2013-03-27 16:13 UTC
The M4.6 (preliminary value) was, besides La Palma, also felt on La Gomera and even Tenerife (perfectly normal based on our earthquake experience)
2013-03-27 16:03 UTC
Strongest earthquake so far during this crisis, a M4.6! earthquake luckily in the ocean at a depth of 19 km.
IGN had made a prediction that there should be a 23% chance that a M4.6 would happen. They are right but people start to get a little scared anyway.

2013-03-27 16:31 UTC
Spectacular earthquakes going on right now in the ocean to the west of El Hierro A new strong earthquake (preliminary Magnitude 4.4) made chairs and ceiling lights moving and windows trembling. This last earthquake was also felt at the other islands.
Based on our earthquake experience, we expect that an M5 will be the absolute max. for volcanic earthquakes. In rare cases the Magnitude goes even higher but these are mostly volcanic explosions which nobody expect to happen + the shaking of every current earthquake is weakened by the sea.
We would advise people at El Hierro, to stay away from steep cliffs as rockfall can happen at any moment.

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2013-03-27 18:50 UTC
- From the reports we are getting and as seismographs show, things seem to be less intense for now.
- So far, this crisis has released more energy than the crisis before the eruption.
- More rockfall has been reported in the roads of Frontera-Sabinosa, some of the rocks quite large, and personal is now working onsite to clear them.
- A press release from the government insists that there is no big danger to the population, earthquakes are occurring at sea, as they monitor the situation, and insist to make sure people are self-prepared at home.

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Op woensdag 27 maart 2013 23:08 schreef quirina het volgende:
[knip]youtube video[/knip]

Hmm eng zeg

twitter:

teideano twitterde op woensdag 27-03-2013 om 20:50:03 @eruptionsblog Ther you have a graph showing the evo of CO2 and Rn222 at one of our sites. BTW, what a day.... http://t.co/N1hg6Q3T12 reageer retweet

twitter:

teideano twitterde op woensdag 27-03-2013 om 23:52:14 It seems that magma is pushing really hard. Today up to six +4.0M quakes at El Hierro. Highest topped 4.6M. 31 quakes over 3.0. #volcano reageer retweet

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2013-03-27 23:36 UTC
- PEVOLCA has taken measures tonight to strengthen the safety of the island. The western part (which has a lot of cliffs) has been changed into a Yellow Alert zone. Pevolca stresses however that the seismicity is still at 10 km from the island.
The full translated press report :

PEVOLCA takes measures to protect the population in response to the increased seismicity.
27-03-2013 20:41 - Ministry of Economy, Finance and Security
* It comprehends the higher risk zone where seismicity is taking place at 10 km. away from the island and so PEVOLCA has decided to take certain measures to protect the population due to the increased magnitude of earthquakes.
Measures taken by PEVOLCA in agreement with the council of El Hierro are the following:
- Closing the lane of the tunnel closest to the exit in Frontera, closing the length of road HI-50 between Cruce de La Tabla and Sabinosa and the access road to Playa La Madera, of Pozo de la Salud until the crossing with road HI-503.
- Access to Ermita de Los Reyes and to Sabinar through HI-503 will remain open
- Yellow informative alert for the population at the zones limited by HI-500 at Pozo de la Salud to the South, en the crossing between HI-500 with HI-400 at the crossing known as El Tomillar.

twitter:

teideano twitterde op donderdag 28-03-2013 om 13:30:56 Valverde gps motion, at El Hierro 35km away from the #earthquake swarm, moving clear eastwards. #volcano #geology http://t.co/N7fc8AUxEV reageer retweet

twitter:

teideano twitterde op donderdag 28-03-2013 om 14:22:30 @eruptionsblog @pabloj_gonzalez @rschott @davidmpyle CO2 diffuse emmission at El Hierro. Last survey, 1684 Tn/Day http://t.co/8eKDC84QO3 reageer retweet

twitter:

teideano twitterde op donderdag 28-03-2013 om 17:41:36 Our closest station to the #earthquake swarm. almost 12cm uplifted.... #volcano #geology #science http://t.co/DcyzVWtjvL reageer retweet

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2013-03-28 23:20 UTC
- For the first time since the start of the eruptive process in 2011, there was a power failure in the western part of the island. It only lasted for a couple of minutes, but the people living there are scared that it would produce again during the night. A lot of them have now torchlights and candles near their bed in case of
- Rockfall has been reported in different areas of the western part.

twitter:

teideano twitterde op vrijdag 29-03-2013 om 10:46:14 Huge shake right now.....let´s go back to the front....have been a loooooong night. @eruptionsblog @rschott @EMSC @pabloj_gonzalez reageer retweet

twitter:

teideano twitterde op vrijdag 29-03-2013 om 11:08:41 4.4M El Hierro. #earthquake #volcano #geology #geología #terremoto http://t.co/NYg2s0ocq5 reageer retweet

twitter:

teideano twitterde op zondag 31-03-2013 om 13:17:29 Huge #earthquake at noon...maybe the biggest since everything started at El Hierro....o bet close to 5.0M.... #volcano #geology reageer retweet

twitter:

teideano twitterde op zondag 31-03-2013 om 13:18:59 4.9M.....wow....was close!! reageer retweet

twitter:

teideano twitterde op zondag 31-03-2013 om 13:35:36 Words are useless....this is it, a 4.9M @eruptionsblog @rschott @nchazarra @pabloj_gonzalez @EMSC @VolcanoReport http://t.co/zbvVFXy6pB reageer retweet

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Op zondag 31 maart 2013 13:43 schreef bwt het volgende:
Te vroeg gesproken
4.9

twitter:

teideano twitterde op zondag 31-03-2013 om 13:17:29 Huge #earthquake at noon...maybe the biggest since everything started at El Hierro....o bet close to 5.0M.... #volcano #geology reageer retweet

twitter:

teideano twitterde op zondag 31-03-2013 om 13:18:59 4.9M.....wow....was close!! reageer retweet

twitter:

teideano twitterde op zondag 31-03-2013 om 13:35:36 Words are useless....this is it, a 4.9M @eruptionsblog @rschott @nchazarra @pabloj_gonzalez @EMSC @VolcanoReport http://t.co/zbvVFXy6pB reageer retweet

[ afbeelding ]

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2013-04-08 20:00 UTC
- We bring you very good news! Voters have decided that NASAs earth 2012 image goes for El Hierro!
- After 5 rounds against 32 images the winner was announced today on their website, where the voting took place. In fact, the matchup was not even close, as El Hierro romped with 91% of votes!
- NASAs note on the story ends with a funny comment Perhaps a volcano will soon be popping some lava champagne to celebrate the win.

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2013-04-10 14:40 UTC
- PEVOLCA has met today and decided to lower the Yellow alert to Green Alert.
- They have now opened all the roads that were closed and insist that they remain vigilant and this is a green pre-alert phase as there are still some abnormal values.
- Diffused Co2 released to the atmosphere has decreased from 1,824 tons per day to 1,475 measured yesterday.
- Full press release click here

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Important Note: As of May 20 the information of volcanic activity on the island of El Hierro will be accessible from the direction : http://www.01.ign.es/ign/layout/volcaVolcanologia.do

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Op zondag 26 mei 2013 13:14 schreef Peter het volgende:

[..]

verwacht je nog onrust de komende tijd dan?

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Op zondag 26 mei 2013 21:54 schreef quirina het volgende:
Wanneer gaat de Teide een keer ploffen?

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2013-05-28 16:13 UTC
- Has been a rather long time before updating (returning from a holiday). Quiet impressive list with all weak earthquakes (strongest one being a M2.1 at a depth of 20 km). Yesterday May 27, NO earthquake were listed by IGN at all.

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2013-05-31 20:36 UTC
- NO continued strong action, only 2 isolated earthquakes.

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1215828 05/06/2013 05:35:38 27.7567 -18.3061 12 1.5 mbLg W FRONTERA.IHI [+]
1215792 05/06/2013 02:47:43 27.7657 -18.2153 14 1.7 mbLg W FRONTERA.IHI [+]
1215756 04/06/2013 15:45:43 27.7531 -18.0208 10 1.6 mbLg W FRONTERA.IHI [+]
1215685 04/06/2013 10:00:14 27.7996 -18.2473 15 1.9 mbLg W FRONTERA.IHI [+][bron]

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Op vrijdag 7 juni 2013 11:35 schreef Peter het volgende:
Toevallig komt het toeristisch zomerseizoen er aan..

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Op vrijdag 7 juni 2013 14:20 schreef DemonRage het volgende:
Gaat El Hierro nog een Santorini/Krakatoa doen?

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2013-06-18 16:26 UTC
- Reader Berry told us a little earlier today by way of the comment form, that he had seen some action which may not have been triggered by bad weather. After checking what he said, we believe that he was right.
The weak tremor was noticed during something more than 2 hours. It is normal again at the time of writing. No significant earthquakes were noticed during this tremor period. A non-volcanic explanation maybe some other disturbing source, but the signal looks real to us.

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2013-07-22 23:07 UTC
A long list today, merely because due to too many earthquakes and no need of urgency at El Hierro.
Almost all the ver weak) earthquakes today were right below the center of the island. We think none of them was felt by the islanders.

2013-07-15 10:07 UTC
Nothing really spectacular but still a bunch of earthquakes at El Hierro. When a crisis starts, these weak earthquakes are almost never listed. It is a pity that IGN stopped doing that. Publishing them, eventually in a separate list, would be great as this seismicity gives an even better view on the activity.
IGN has done this during the first pre-eruption crises. Why they stopped publishing them is one of the many unanswered questions.

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2013-07-27 13:14 UTC
2 more earthquakes since our last update. The avcan image below shows the epicenters of the last 14 earthquakes. All of them 9 to 13 km below see level.


2013-07-27 09:13 UTC
A lot of seismic activity since midnight (12) and the last couple of days. The earthquakes are however weak to very weak. Hard to say what will follow but me might have more attention for El Hierro today than the preceding days. The CHIE graph is simply USELESS for volcano followers like us. The amplitude of the events has been scaled back so strongly that even an earthquake is hard to see. This kind of behavior of the authorities was in earlier times reserved for some dictatorship states who did not want to get “bad news” outside the country.

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2013-07-29 07:36 UTC
Less earthquakes since our latest update, but 2 of the few remaining (M2.8 and M3.0) have been felt by the islanders.

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2013-07-29 18:32 UTC
The Magnitude of the earthquakes is gradually increasing. Today, only 2 earthquakes reported by IGN but with a Magnitude of M2 and M2.6. Epicenter in the El Golfo area and a second spot near the Lighthouse (Orchilla).
To soon to attract conclusions on the current events but the following days might see a further increase of stronger activity. Keep a look at it together with us and send a comment if something interesting is taking place.

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2013-08-02 15:49 UTC
For some it might be another boring update, but those who are following El Hierro from the beginning do know that it all starts with increased seismicity. What to retain about the below list ? Almost all of the 10 to 12 km depth weak earthquakes are happening in the El Golfo area (near the coast or below the coastal area. Only the M2.5 or more might be felt be people and we have only 1 of the list like that.

twitter:

pabloj_gonzalez twitterde op woensdag 07-08-2013 om 01:44:12 Now in early-view our paper in JGR: Magma storage and migration associated with the 2011–2012 El Hierro eruption http://t.co/89QDmQPqcp reageer retweet

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2013-08-09 15:47 UT
A bunch of (weak to very weak) earthquake below or around El Hierro since 4 days :

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Op maandag 12 augustus 2013 17:50 schreef quirina het volgende:
En nu?

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2013-08-12 18:04 UT
A big number of new (however weak to very weak) earthquakes. Most of them in the immediate vicinity of the island and almost all of them at a depth of 10 km. You won’t see them on the CHIE seismograph but we would not be surprised that some increasing action would start soon. (Thank you Chris and Leona for telling us). All what happens at the moment can only be recorded by instruments. People on the island will not feel it.

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2013-08-12 21:10 UT
And another 11 earthquakes since our latest update, which brings the total today up to 28. Even the CHIE seismogram is showing more and more earthquakes.

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2013-08-13 09:20 UT
Seismicity also continues today, at least many times more than the preceding weeks. Compared to the powerful earthquake periods in the past, the current earthquakes are really nothing. Nice that IGN shows us this list but keep in mind that the current weak earthquakes did not even show up in the lists at that time.

twitter:

teideano twitterde op dinsdag 13-08-2013 om 08:58:15 quakes are back to El Hierro #volcano. up to 71 since aug 10th. and counting. reageer retweet

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2013-08-13 22:36 UTC
Nature and volcanoes especially are really unpredictable. What yesterday looked as a new start of seismicity and more action has died down again today.

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2013-08-15 15:31 UTC
Less earthquakes than before but one serious M2.9 with an epicenter in the Las Calmas sea. Depth however at 16 km (deepest of all today’s earthquakes)

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2013-08-17 13:57 UTC
Seismicity report for the last 2 days

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2013-08-18 06:20 UTC
While on CHIE we can’t see almost nothing, another seismograph has started to show some consistent tremor. this may be caused by a badly working instrument, but the tremor shows like real at least. Strange however that there is ni increase in seismicity as the tremor shows a lot of small peaks. We will keep en eye on it during the day to find out whether it is real or wrong.

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2013-08-18 21:00 UTC
The tremor stopped later in the day as you can see on the seismogram below. We still do not know whether it was instrumental or real but without recognizable seismicity we think it might have been weather related or instrumental. No additional reported earthquakes since this morning.