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“There’s no keeping up with the volcanic activity on el Hierro!” says reader Hans Schreuder.


el Hierro earthquakes - 3 July 2012


“This is the news today, Tuesday 3 July 2012,” says Hans, a retired analytical chemist.

“The island has now been elevated by 9 cm due to the magma pressure. Last night there was one quake of 4.4 on the Richter scale, at a depth of 18km, which was also felt on the neighbouring island of La Palma.”

“The energy released by today’s activity has been calculated at 1,4 billion joule.”

“So far today there have been 94 tremors and since the beginning of the current tremor period on 24 June there have been 1,505 tremors of which 234 were greater than 2.4 on the Richter scale.”

“There has not been a significant change in the emission of carbon dioxide, sulphur dioxide or radon on the north-side of the island where the chemical sensors are located.”

See:
http://www.canarias7.es/articulo.cfm?id=266577

See also:
http://www.canarias7.es/articulo.cfm?id=266591

Thanks to Hans Schreuder for these links

Not only a retired analytical chemist, Hans is also publisher of http://www.ilovemycarbondioxide.com/

 

22 Responses to El Hierro getting worse by the day

  1. Super Volcano, perhaps?

    • AndrewS says:

      http://en.wikipedia.org/wiki/El_Hierro

      “El Hierro is a 278.5 km2 island, formed approx 1.2 million year ago[10] after three successive eruptions, the island emerged from the ocean as a triangle of basaltic dykes topped with a volcanic cone more than 2,000 metres high.[11] With continued activity resulting in the island expanding to have the largest number of volcanoes in the Canaries (over 500 cones, another 300 covered by more recent deposits), together with approximately 70 caves and volcanic galleries, including the Cueva de Don Justo whose collection of channels is over 6 km in length.[11] Landslides have reduced the size and height of the island.[11] The current highest point is situated in the middle of the island, in Malpaso, 1501 meters high.”

      Based on this and other information at the link above, it seems doubtful that this would become a supervolcanic eruption. Tsunami events look to be mostly local. But, in this day and age, it seems like anything can happen. We shall see…

      • laurel says:

        anything with the force to raise that big a land mass now up to 9cm..thats up from 7.6 cople of days back?
        I sure would NOT be hanging round on that land area to find out what it has in mind.
        another BIG solar flare today as well.
        explosion, huge vent, big quake, or all 3 and landslides tsunamis could be an option. why? would anyone who doesnt have to be there, stay?

  2. John the 1st says:

    Using Mt. St. Helens as a yard stick, if she blows how big would it be?

    • David L says:

      MSH was a plinian eruption that was rated VEI 5 which is 1 km3 of material. By comparison Eyjafjallajokull was VEI 4 (0.1 km3). I am not sure what La Restinga has been classified as but it was/is very small – possibly VEI 1. Don’t forget that these are logarithmic so VEI 1 is 0.001 km3 of material.

      When it does erupt it is unlikely to be explosive like MSH and will be a fissure eruption like Eyja and Hawaiin volcanoes.

  3. C. Peter Davis says:

    If she blows there will be a MASSIVE tsunami hitting the East Coast of the U.S. from Boston to Florida.

  4. David L says:

    Just a small point here.

    The energy released by today’s activity has been calculated at 1,4 billion joule

    If that is the old fashioned English billion, which no one uses these days then it is about right as 1,000,000,000,000 (the old billion and the modern trillion) is the magnitude equivalent of a Mag 4.8 or 239 Tons of TNT.

    If however this is referring to 1,000,000,000 joules that is the equivalent of a Mag 2.8 which is obviously wrong as there have been 2 x Mag 4+

  5. PDN says:

    I guess nothing significant will happen this time either, same with the Katla who broke the rule of NOT erupting after Eyfjalahjöknullh-whatever…

  6. Ed Minchau says:

    John, if an eruption occurs on La Palma, it could cause the western half of Cumbre Vieja to slide into the Atlantic ocean, triggering a mega-tsunami. Picture three hundred foot tall waves smashing into the American east coast. That would be extremely inconvenient.

  7. Stephanie says:

    The main thing is that if she does blow, she can cause a massive tsunami which will hit the USA, because parts of the island will fall into the ocean. I saw this on some documentry.

  8. TomO says:

    The amount of energy is significant, but this is not exactly all volcanic activity. Although the island is a number of volcanic cones, I haven’t seen where there is panic in the amount of activity as yet. The main vent from last year’s activity is off shore, and it is presumed that any volcanic activity would also likely be off shore again. I don’t think you will see a huge eruption, just the continuing birth of a new volcanic island.

  9. John the 1st says:

    Thanks for the info everyone.

  10. David L says:

    To those of you scaremongering about huge tsunami hitting the coast of the US you should take a read of this:

    Evaluation Of The Threat Of Mega Tsunami Generation From Postulated Massive Slope Failures Of Island Volcanoes On La Palma, Canary Islands, And On The Island Of Hawaii

    The upper limit of his modeling study shows that the east coast of the U.S. and the Caribbean would receive waves less than 3 meters high. The European and African coasts would have waves less than 10 meters high. However, full Navier-Stokes modeling of the same La Palma failure, brings the maximum expected tsunami wave amplitude off the U.S. east coast to about one meter.

    10 metres is not insubstantial, but is not a disaster level event.

    • TomO says:

      One of the nice things I have learned with “global warming” is that I always accept “computer modelling” with many grains of salt. I don’t see a tsunami from what appears to be going on either, and I agree that it would be nice to view an event without the automatic “fear mongering” that has become second nature to our way of living these days. At the current times, looking around the world, I don’t think we need to fear what Earth does, we need to fear what Man does.

  11. RobertvdL says:

    Now the Spanish press has something to write about during the holidays.

  12. Terral Croft says:

    The increase in El Hierro activity coincides with the end of the 2-month earth change lull period predicted by our research models saying a heavy-mass object is inbound from the Leo Constellation. All the calderas on Earth are bulging at varying rates depending upon a wide range of variables. The Sun is releasing M-class flares at record pace and magnetic north pole migration is increasing at the same time carrying the jet stream even farther north to give the USA record hot temperatures. At the same time USA and Russian presidents are issuing presidential orders to assume control over civilian assets in preparation for what is coming. There is nothing like a bunch of sleeping fools blinded by normalcy bias crying ‘fear mongering,’ when the little boy runs by crying ‘wolf!,’ and the wolf is almost here.

    Go back to sleep; nothing to see here …

    Terral

    • Robert says:

      Just for the record, I’m not concerned about any sort of inbound heavy-mass object.

    • David L says:

      The increase in El Hierro activity coincides with the end of the 2-month earth change lull period predicted by our research models saying a heavy-mass object is inbound from the Leo Constellation.

      Er, rubbish. Perhaps you would like to substantiate statement up with some real evidence of your 'research models'? By the way who is 'our'? Just making statements with no references is pointless. You might also take a look at El Hierro which has almost stopped doing it’s thing. Looks like this may be a non event in the end.

      Graph of daily Mag 1.5+ event numbers at El Hierro
      from my blog page.

      All the calderas on Earth are bulging at varying rates depending upon a wide range of variables.

      Oh dear, Yellowstone caldera forgot to read your note and has been deflating since 2009. Oh well can’t win them all. What exactly does the term 'varying rates depending upon a wide range of variables' mean? I can’t say it is a scientific term I have come across.

      The Sun is releasing M-class flares at record pace and magnetic north pole migration is increasing at the same time carrying the jet stream even farther north to give the USA record hot temperatures.

      No, the sun is at a very low state at present and the number of flares is way below what has been. Even if solar flareso affect the jet stream, which they may, all of this has been seen before, however just how exactly does the migration of the magnetic north pole affect the jetstream. I am guessing you have never even studied the jetstream.

      At the same time USA and Russian presidents are issuing presidential orders to assume control over civilian assets in preparation for what is coming.

      What is coming is economic chaos. Governments always seize that opportunity to increase control.

      and the wolf is almost here.

      ORLY? I beg to differ, mind it depends what you call the wolf. Massive object it is not. Economic breakdown it might be.

  13. David L says:

    El Hierro must have been having a rest. Either that or the seismo display being down DID affect the count because it seems to be picking back up again today.

  14. David L says:

    Update on El Hierro 0830 UTC 08 July 2012

    Date(d/m/y) Number
    24/06/2012 22
    25/06/2012 237
    26/06/2012 220
    27/06/2012 196
    28/06/2012 172
    29/06/2012 154
    30/06/2012 142
    01/07/2012 109
    02/07/2012 107
    03/07/2012 161
    04/07/2012 90
    05/07/2012 97
    06/07/2012 41
    07/07/2012 107
    08/07/2012* 16

    These are earthquakes of 1.5+ magnitude from the National Geographic Institute 10 day list

    *=to 0830 UTC

    See graphs of these and more here


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