El Hierro Volcano activity report

Last update: April 17, 2014 at 3:54 pm by By

This is the most recent El Hierro Volcano eruption report You may follow also Facebook Volcano PageGoogle+ VolcanoesTwitter : @VolcanoReport With the collaboration of Joke Volta, an El Hierro resident and Julio del Castillo Vivero, photographer. Read also:  links to all 59 prior parts of this eruption report please go to the bottom of this page Read also: The 2011 submarine volcanic eruption in El Hierro (Canary Islands), Spain Useful links  : @VolcanoReport  -  Picasa Photo Album  El Hierro Webcam (only 1 active) :  Frontera-Sabinosa FrançaisNederlandsEspañolJapanese (automatic translations) THIS PAGE WILL REFRESH AUTOMATICALLY EVERY 10 MINUTES, KEEP IT OPEN IN A BROWSER TAB 


Many thanks to all the people (among them a lot of volcano lovers) who have send us donations. May we ask the people of El Hierro, reading this page, to use our I HAVE FELT IT form when they feel the current earthquakes. The way you feel it will give us some additional information on what is going on (written on December 22 at 19:46 UTC). Click on this I HAVE FELT IT link. You can write in your own language.
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2014-04-17 15:37 UTC
I am currently traveling in Ethiopia until Easter, which is the reason for this late update :
Except for the M3.3 who was felt my the islanders, no unusual seismic activity the last 2 weeks.

Screen Shot 2014-04-17 at 18.42.38

Screen Shot 2014-04-17 at 18.34.20 Screen Shot 2014-04-17 at 18.34.52


2014-04-05 15:41 UTC
The seismicity of the last couple of days. Nothing unusual has been noticed in the earthquake pattern.

Screen Shot 2014-04-05 at 17.36.16


2014-03-31 22:38 UTC
Hard to believe that the once so active island has been almost asleep for almost 2 weeks. Below the seismicity during that period. No fear that we would stop our reporting on what happens on the island, we will continue until a new eruption happens :)

Screen Shot 2014-04-01 at 00.33.42


2014-03-17 23:23 UTC
This was probably one of the shortest swarms so far.

Screen Shot 2014-03-18 at 00.22.17 Screen Shot 2014-03-18 at 00.22.59


2014-03-16 14:00 UTC
A bunch of new earthquakes after this new Magma intrusion. No tremor on the seismographs though (earthquakes are still too deep and are mainly below the central-north of the Island (in between Frontera and Valverda). This is an entirely new activity area for the last many years. The frequency of earthquakes is further decreasing.

Screen Shot 2014-03-16 at 15.32.50


2014-03-15 23:55 UTC
Although we have listed a huge number of earthquakes today, we can say that both strength and frequency have decreased the last number of hours. An impressive list of earthquakes

Screen Shot 2014-03-16 at 01.28.15 Screen Shot 2014-03-16 at 01.28.49 Screen Shot 2014-03-16 at 01.29.22 Screen Shot 2014-03-16 at 01.32.41

2014-03-15 06:13 UTC
Most of the many recent earthquakes below the northern part of the middle of the island. Strongest earthquake 2.4 unchanged depth. NO direct danger to the population

Screen Shot 2014-03-15 at 07.14.09

Screen Shot 2014-03-15 at 07.11.06 Screen Shot 2014-03-15 at 07.11.33

2014-03-14 23:34 UTC
Even more earthquakes this afternoon en evening. Location of most of the epicenters from Frontera towards Valverde.

Screen Shot 2014-03-15 at 00.36.36 Screen Shot 2014-03-15 at 00.36.57 Screen Shot 2014-03-15 at 00.37.57

2014-03-14 16:07 UTC
We can talk about a real swarm now. A lot of new earthquakes are being added, all of them at the same depth. The Magnitude is somewhat weakening.

Screen Shot 2014-03-14 at 17.05.26

2014-03-14 08:51 UTC
Another set of earthquakes have been listed by IGN since our last update. Almost all of the earthquakes at a depth of 18 to 20 km which is deep for volcanic earthquakes.

Screen Shot 2014-03-14 at 09.52.19

2014-03-14 07:44 UTC
An earthquake swarm has started a couple of hours ago below the Frontera / El Golfo area

Screen Shot 2014-03-14 at 08.42.11Screen Shot 2014-03-14 at 08.41.55

2014-02-24 18:16 UTC
No more seismicity after 05:00 AM this morning and only the CRST seismograph showing a lot of movement only during office or labor hours will probably mean “false alert”. As no other seismographs did show an serious increased tremor, we expect the picture to be the result of human interference.

2014-02-24 10:00 UTC
After a period of calm, the volcano gods are turning themselves in their sleep. Readers Henk and Jens told us a little earlier that there was some new seismic activity at El Hierro. To be honest, everything is still  weak (below M2), but the location of the earthquakes , the number and especially the seismograph makes it certainly relevant to follow it up very closely.  Most earthquakes are below the middle of the Island.
The last listed earthquake is however from 05 AM this morning and the same seismicity like the below chart of CRST cannot be seen on other installed seismographs.

Screen Shot 2014-02-24 at 16.11.30 Screen Shot 2014-02-24 at 16.13.08 Screen Shot 2014-02-24 at 16.38.40


2014-02-17 23:55 UTC
What looked like renewed activity today was in fact a couple of earthquakes (rather aftershocks) of the major earthquake to the West of El Hierro. The last one being a deep earthquake on the Northern shore of Tenerife. So, no renewed seismicity and a lot of bad weather the preceding days.

Screen Shot 2014-02-18 at 01.09.41


2014-02-12 10:47 UTC
Apart from a deep quake near Las Sauces, La Palma (single event) nor much to report. Very weak seismicity both in strength as in frequency

Screen Shot 2014-02-12 at 23.34.51


2014-02-05 10:47 UTC
We will cut a big portion of this article later today (Thanks Leona for telling us).
This is the seismicity below the island since our last update. A limited number of daily earthquakes after all.

Screen Shot 2014-02-05 at 11.45.08


2014-01-28 16:34 UTC
The El Hierro volcano sleeps again. the earthquakes during more than 1 week can be counted on one hand.

Screen Shot 2014-01-28 at 17.33.47


2014-01-22 13:45 UTC
Nothing special to report but we want to keep you updated about the seismicity near or below the island.

Screen Shot 2014-01-22 at 14.46.33


2014-01-19 12:30 UTC
1 earthquake with the seismographs at Ctan and Ctab working again.

Screen Shot 2014-01-19 at 13.27.46

2014-01-19 01:22 UTC
No changes after our 20:02 update.


2014-01-18 20:02 UTC
We are noticing increasing tremor in the ctan and cjul seismographs this morning (Ctan and Ctab have both been stopped or hided from public viewing by IGN). We do not think that the current increase is due to bad weather or increasing waves although a slight increase in waves occurred earlier. NO additional earthquakes. We will keep an eye the following hours and days to find out eventual changes.

2014-01-18 08:55 UTC
THE news the last couple of hours at El Hierro was the report of AVCAN that a lot of pumice was collected the last 24 hours in the waters and at the beach of Arenas Blancas at the West Coast of the Island. The pumice will have to be analyzed by specialized laboratories to find a clue where it comes from. This will not be easy at all as the instruments are not showing any traces of eruptive activity at this moment besides a weak increase in tremor on a couple of seismographs (which can also have been caused by the waves).
We do not know whether the strong subsidence of some GPS stations are related to the newly found pumice.
Link to the deformation graph of HI00; HI08, HI09 and HI10
Link to the deformation graph of HI01, FRON, HI02, HI03 and HI04
No significant seismicity since a couple of days.

Image courtesy and copyright AVCAN Canaric Islands - Click on this image to go to the full AVCAN article

Image courtesy and copyright AVCAN Canary Islands – Click on this image to go to the full AVCAN article, with a lot more pictures

Screen Shot 2014-01-18 at 10.08.50


2014-01-13 06:09 UTC
Nothing special to report today. The deformations are remaining at the same level since a couple of days ago

Screen Shot 2014-01-15 at 22.26.51


2014-01-13 06:09 UTC
The activity on all the Canary Islands seismographs are due to the very strong earthquake out of the coast of Puerto Rico earlier today. It has NO link at all with the El Hierro activity. Thanks for reporting in the comments though.

Screen Shot 2014-01-13 at 07.14.33


2014-01-12 09:38 UTC
Time to make a new update, just to say that the activity below the island has come to a standstill. Only 2 earthquakes since our latest report of earthquakes (1 of these 2 in the region of the M5.1 earthquake relatively far out in the Ocean).
The amplitude of the seismograms is back to very low levels. The increased amplitude the last couple of days was generated by a stormy sea. On some seismographs one could see clearly the tides !
Deformations show small ups and downs but are in average constant.
Link to the deformation graph of HI00; HI08, HI09 and HI10
Link to the deformation graph of HI01, FRON, HI02, HI03 and HI04

Screen Shot 2014-01-12 at 10.38.20


2014-01-07 08:30 UTC
Vertical deformations are down all over the island again.
Seismographs are showing the same amplitude than yesterday evening although the waves have decreased already somewhat (6 to 4 meter average)
No new earthquakes.
Link to the deformation graph of HI00; HI08, HI09 and HI10
Link to the deformation graph of HI01, FRON, HI02, HI03 and HI04

Screen Shot 2014-01-07 at 09.37.36


2014-01-06 21:29 UTC
Reader Max wrote in a comment a little while ago :
Manfred Betzwieser mentioned that there is a bad weather advisory for tonight (6 meter high waves).
This may explain indeed the increase of amplitude on the seismographs.

2014-01-06 20:05 UTC
During the last couple of hours we notify an increase in activity on many seismographs. No earthquakes listed so far.
the earthquake happened in the same area where the M5.1 occurred = far out of the western coast.

Screen Shot 2014-01-06 at 21.05.57

Screen Shot 2014-01-06 at 21.07.11

Please be aware that the scale of this seismograph is a lot more sensitive than most of the other ones, but we have to mention too that the amplitude now is amongst the strongest since the start of the new crisis on December 21 - CTAB is installed in the vicinity of Sabinosa

Please be aware that the scale of this seismograph is a lot more sensitive than most of the other ones, but we have to mention too that the amplitude now is amongst the strongest since the start of the new crisis on December 21 – CTAB is installed in the vicinity of Sabinosa

2014-01-06 10:15 UTC
NO earthquakes, but almost all the GPS deformation data slightly up. Tremor continues to show at the same stations than yesterday but is decreasing strongly the last couple of hours.
Link to the deformation graph of HI00; HI08, HI09 and HI10
Link to the deformation graph of HI01, FRON, HI02, HI03 and HI04


2014-01-05 20:19 UTC
Our yesterday’s update was unfortunately not published.
Todays picture is somewhat like the preceding days. Almost no earthquakes, subsidence (even strong) in some parts again (weak) lifting in other parts.
Some tremor is still present in some parts of the island (probably due to a very sensitive scale).  When we see this kind of tremor, and if the weather is not the source, this is mostly followed by a weak or even stronger lifting. We are curious what the current situation will generate on tomorrow’s deformation.
The picture below is from the lighthouse seismograph. As the amplitude on every seismograph is different it is hard to say what exactly happens.
As long as the deformations (see links below) are not stabilized, we will continue to follow up the situation on a daily basis (in fact many times per day)
Link to the deformation graph of HI00; HI08, HI09 and HI10
Link to the deformation graph of HI01, FRON, HI02, HI03 and HI04

Screen Shot 2014-01-05 at 21.26.12

Screen Shot 2014-01-05 at 21.24.45


2014-01-03 13:25 UTC
Another special event took place very recently, 2 relatively shallow earthquakes (9 and 10 km deep) in a new area to the east of La Restinga. The first one being a strong M2.8 earthquake, the second (aftershock?) a M1.8 earthquake 1 minute and 44 seconds later. Especially the location is intriguing us.

Screen Shot 2014-01-04 at 13.07.41

Screen Shot 2014-01-04 at 13.09.37

Epicenter location of the M2.8 earthquake this morning

The overall deformation picture of the island is subsidence (GPS data this morning).
Link to graph of HI00; HI08, HI09 and HI10
Link to graph of HI01, FRON, HI02, HI03 and HI04


2014-01-03 13:25 UTC
A stabilized picture at the western and northern part of the island. The South-east however is lifting again. Check increase at HI08 and HI09
Link to graph of HI00; HI08, HI09 and HI10
Link to graph of HI01, FRON, HI02, HI03 and HI04


2014-01-02 17:23 UTC
Mixed deformation picture. The HI04 who increased yesterday more than 2 cm is back down today. Other GPS stations are delivering a mixed picture.
Link to graph of HI00; HI08, HI09 and HI10
Link to graph of HI01, FRON, HI02, HI03 and HI04

Screen Shot 2014-01-02 at 18.18.46

2014-01-02 09:00 UTC
NO new deformation data yet.
1 earthquake listed by IGN
Some tremor, who started yesterday, is still present at the Western El Golfo stations.

Screen Shot 2014-01-02 at 09.56.52


2014-01-01 13:23 UTC
Renewed increasing tremor is visible in the El Golfo area (TAB en TAN seismographs). Remember that we mentioned this morning  that HI04 Sabinosa area GPS station had an increase of at least 2 cm during the last 24 hours.

2014-01-01 10:44 UTC
4 earthquakes since our latest update. The M2.1 at 3 km depth earthquake was located to the south of La Restinga in the Las Calmas sea
Ecxept for the HI04 GPS (Sabinosa) who shows a lifting of 2 cm, almost all the other stations stabilizes based on the new IGN deformation data.
Link to graph of HI00; HI08, HI09 and HI10
Link to graph of HI01, FRON, HI02, HI03 and HI04

Screen Shot 2014-01-01 at 11.41.18


HAPPY NEW YEAR


 Links to earlier parts of this extensive El Hierro eruption report : (28/7 – early 09)  – (25/09 – 10/10)(11/10 – 13/10)- (14/10 – 17-10)  -  (18/10 – 21/10)  -  (22/10 – 26/10 )(27/10 – 31/10 )(01/11 – 03/11 )(04/11 – 06/11 )(07/11 – 08/11)(09/11- 11/11)  – (12/11 – 15/11) – (16/11 – 19/11)  – (20/11 – 23/11) – (24/11 – 27/11) – (28/11 – 02/12) -(03/12 – 07/12) – (08/12 – 11/12) – (12/12 – 15/12) – (16/12 – 18/12) – (19/12 – 25/12) – (26/12 – 31/12) – (01/01 – 03/01) – (04/01 – 07/01) – (08/01 – 13/01) – (14/01 – 19/01) – (20/01 – 25/01) -  (26/01 – 30/01) – (31/01 – 04/02) – (05/02 – 10/02) – (11/02 – 16/02) – (17/02 – 23/02) – (24/02 –29/02) – (1/03 – 10/03) – (11/03 – 18/03) – (19/03 – 23/03) – (24/03 – 28/03) – (29/03 – 03/04) – (04/04 – 10/04) – (11/04 – 21/04) – (22/04 – 30/04) – (01/05 – 10/05) - Part 43 (11/05 – 31/05) – (01/06 – 14/06) – (15/06 – 24/06) – (25/06 – 26/06) – (27/06 – 28/06) – (29/06 – 01/07) – (02/07 – 06/07) – (07/07 – 31/07) – (01/08 – 31/08) – (01/09 – 11/09) – (12/09 – 30/09) - Part 54 (01/10 – 15/12) - Part 55 (16/12 – 16/03) - Part 56 (16/03 – 26/03) – Part 57 (27/03 – 30/03) - Part 58 (31/03 – 12/08) - Part 59 (13/08 – 30/11) - Part 60 (1/12 – 25/12) - Part 61 (25/12 – 31/12)


Read also : Scientific paper reveals massive historic Tenerife volcano flank collapse Read also: Economic impact on El Hierro and the Canary Islands if an aerial eruption would occur


Volcano Discussion Panel : If you are a person who wants to discuss and read about all aspects of volcanoes,  this discussion panel might be a very good place to hang around. Especially if we start speculating about what to happen next.

Comments

  1. Monika says:

    Guten Morgen,

    vielen Dank für die gute und aktuelle Berichterstattung.

    Gestern abend gab es zwischen 20.30 Uhr und 21.06 Uhr zwei Beben (2.3 und 2.0) unter Land, die laut IGN in 0 km Tiefe stattfanden. Wenn das stimmen sollte, macht es nachdenklich, oder?

    • Armand Vervaeck says:

      Dear Monika,
      O km means that the data they have received are not accurate enough to report = no reliable data. Hope this explains a lot.
      O km bedeutet, dass die Daten, die sie erhalten haben, sind nicht genau genug, 0 = keine verlässlichen Daten zu berichten. Hoffe, das erklärt viel. Armand

    • Monika says:

      Danke, Armand. Die roten Signale auf der Animacion von Avcan hatten mich aufgeschreckt. Jetzt kann ich es einordnen.

  2. Roland SEMEESE says:

    Hello Armand,

    Deze nacht 4.04 uur een beving van 3.8. Alhoewel nog zeer diep toch veel dichter bij Restigna, en vooral veel meer oostwaarst dan de rest van de bevingen de laatste dagen.
    Ik geloof erin dat binnenkort het magma zich een weg zal banen en de zwakke plekken onder de vorige eruptiekanalen zal bereiken.

  3. Daniel says:

    Hi!

    “Sentido”-earthquakes (felt by people) are back an El Hierro….!

  4. phil says:

    The reason for the accuracies of ultra rapid, rapid, and final is linked to the GPS system used to measure them.
    The satellite orbits are predicted ahead of time and measured from refernce stations, then corrections are computed based on measurements and used to update the orbit predictions.
    so the RAW GPS data for the satellite orbits is not known precisely in advance, because they are pertrubed by solar effects, gravitational effects, and the earhts magnetic fields.
    so Ultra Rapid measurements are always less accurate than final measurements because of uncertainties of the SV orbits.

  5. Benjamín says:

    Armand what does ultra rapid deformation mean? That the island is growing?

    • Armand Vervaeck says:

      Good question Benjamin. I have written my answer as the latest update on top of this article. Hope you will understand it.

    • Benjamín says:

      Thanks Armand and Phil for the taking the time to explain, but i’m still a bit puzzled.
      I understand now how the Ultra Rapid, Rapid and Final are measured and that they are “products”, however I’m missing what they actually mean.

      I understand they have a meaning and they are used to indicate horizontal en vertical deformation.
      But what does deformation mean in this context? Litteraly deformation? As in the change of form of an object?

      That’s why I asked if it means that because of the lava/magma the Island is swelling up or something?

    • Armand Vervaeck says:

      This means indeed that the location were the GPS has been installed is pushed towards North, South, East or West and up. Installed in a number of locations, these moving locations can give a clue on where the source of this magma pressure is located. An eventual eruption is most likely where the deformation is strongest. Of course in the case of El Hierro, the 2011 eruption was in the Las Calmas sea. There are unfortunately no stations in the sea.

    • Benjamín says:

      Ok thanks Armand.

  6. patricia says:

    Armand re today’s report on El Hierro – the word for on the ocean sea floor in English is, on the ” sea bed”. Nearly right! Thanks for all your hard work!

    It is almost as if we had a dress rehearsal in 2011. Now” they” know what to do!

  7. df says:
    • Armand Vervaeck says:

      Normally we should say also mar de Fondo or Bottom tide, but we will have to wait for Pevolca to get the final result. The mar de fondo has normally no jacuzzi spot like in our images above + the GES helicopter people clearly were talking about a Burbuja or Jacuzzi. They had a far better view than we had + they surely have not published all pictures they have taken + they may have had other instruments aboard too. A mistery more !

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