Report of massive earthquake swarm in Canary Islands

     
 
July 23, 2011CANARY ISLANDS368 quakes recorded so far….but still some more to be analyzed…northern side of El Hierro suffering the swarm. –Twitpic  This is something we will continue to monitor closely. The Canary Islands are believed to have been formed from a magma plume. Attention turned to the islands after a mild seismic swarm occurred in 2004. The region is seismically active and a major  eruption of the Cumbre Vieja volcano could pose a potential tsuanami threat to the Eastern U.S. and the English Channel. A 2001 report in the UK Indendent warned: Most of the wave’s energy, equivalent to the combined output of America’s power stations for six months, would travel westwards to the American coast but enough would be flicked north towards the English Channel to cause catastrophic coastal damage. A computer model has been designed to show the way the tsunami will build after the volcano, called Cumbre Vieja, erupts on La Palma, at the western end of the Spanish island chain. It describes the almost unimaginable scale of an event that the scientists say could happen at any time within the foreseeable future. “We’re looking at an event that could be decades or a century away – but there will be a degree of warning beforehand,” said Simon Day, of the Benfield Greg Hazard Reseach Centre at University College London. Most of the rocky western flank of Cumbre Vieja is unstable enough to be dislodged in the next big eruption of the volcano, which is active enough to explode at least once or twice a century. Its last big event was in 1949. –Rense 
This is not meant to scare anyone. It’s to educate all about the potential dangers. There is absolutely no indication of this event being imminent. The present seismic swarm is taking place on El Hierro not La Palma.   (c) History Channel
contribution Luisport
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25 Responses to Report of massive earthquake swarm in Canary Islands

  1. kristoffer94 says:

    ohhh, that’s not good, I’m just worried for Cumbre Vieja volcano

    Like

  2. luisport says:

    @Gabriel Vulkan and Rod Coons,

    Concerning El Hierro, the Canary Islands Government appear to be increasing monitoring effort and not worried about any increased risks at present.

    The Canary Islands Government has issued this notice (original in Spanish at http://www.ign.es/ign/resources/sismologia/NOTA_PRENSA_COMITE_CIENTIFICO.pdf) which translates (via Giggle) as:

    “The Scientific Committee met this morning Pevolca

    The Canary Islands government declared normal situation in El Hierro phenomena with simian

    • It has been designated as Cabildo de El Hierro spokesman

    The Ministry of Economy, Finance and Government Security Canary has called for the first time the Steering Committee and Volcanic Monitoring reflected in the Specific Plan Protection Civil and Emergency for Volcanic Risk, given the simian significant increase of activity of low magnitude in Island of El Hierro.

    This committee met this morning at the headquarters of the Directorate General Security and Emergency Tenerife, established after the assessment of information gathered from seismic and volcanological last July 17 by the National Geographic Institute (IGN) and Volcanological Institute of the Canary Islands, the situation is total normal for the green light for the information population, activating mechanisms for monitoring and oversight needed to coordinate the actions of self civil population and information contained in the Plan.

    According to data provided by the seismic monitoring station IGN’s located in Valverde, one can conclude that from the noon on July 17 there has been a significant increase of low magnitude seismic activity in the municipality of Border of the island of El Hierro. To improve the location of this activity, has deployed a seismic network densification operational since July 21 has helped increase the number of earthquakes located, and can be viewed at Web http://www.ign.es

    The Scientific Committee comprises, besides the Government Canary Islands, the National Geographic Institute and the State Agency Meteorology, by invitation of the Director Plan, on this occasion, the Cabildo de El Hierro, the Cabildo of Tenerife and the Institute Volcanological de Canarias

    Scientific Committee spokesman prevail while the phase normally be the Cabildo de El Hierro.”

    Instituto Geográfico Nacional seismic signals page: http://www.ign.es/ign/layout/volcaSenales.do
    IGN seismic graphs for “yesterday and today” (El Hierro monitoring station at the bottom of page): http://www.ign.es/ign/layoutIn/volcaSenalesAyerHoy.do

    Like

  3. katesisco says:

    About these hot spots that are now being assigned as land formers: thinking that the deep ocean smokers were the original ‘hot spot’. And since plate tectonics has failed, are these ‘hot spots’ the source of our land mass? If you consider that the Earth has actually expanded, and that the original ‘hot spots’ still exist, Iceland, Galapagos, Hawaii, Canary Islands, etc., are but the most recent evidence of planetary expansion?

    Like

  4. Dan says:

    Rev. 8:8&9 “Then the second angel blew his trumpet, and a great mountain of fire was thrown into the sea. And one-third of the water in the sea became blood. And one-third of all things living in the sea died. And one-third of all ships on the sea were destroyed.

    Like

  5. luisport says:

    Lurking on July 23, 2011, 3:04 PM
    Interesting…

    “El Hierro” Depth and Magnitude vs Time

    Lurking on July 23, 2011, 3:31 PM
    And now for the part that is a bit confusing. What is the composition of the upper mantle? Just how plastic is it? If these precursor quakes to the El Hierro swarm are actually below the crust, what sort of forces can cause enough stress to generate a quake?

    And another look at the short term plot, but with a trend line just to get an idea of how the center of the swarm is moving.

    NOTE: The swarm could just simply stop. The tend line is not intended as a predictive mechanism.

    Like

  6. luisport says:

    I’ve mapped the swarm out on Google Earth for an aerial visual.
    Co-ords taken from here http://www.02.ign.es/ign/layoutIn/sismoListadoTerremotos.do?zona=1&cantidad_dias=10
    The quakes mapped are of magnitutes 1.5m+.

    Island and surrounding http://i55.tinypic.com/spaeew.jpg

    Closer view of island http://i55.tinypic.com/o0b5z.jpg

    Like

  7. Dennis says:

    Oh! Not good and I live about 100 miles from the coast.

    Like

  8. Golfdad641 says:

    I said it once before and will say it again, Thank you luisport for you posts and comments, keep up your awesome work the Lord Loves You. God Bless, Warren

    Like

  9. Jens Skapski says:

    What is going on in Atlantic Ocean??? Iceland, Mediterranian Sea, Mt. Etna, earthquakes on Mid Atlantic Ridge and now Canary Islands! What do we have to expect next?

    Like

  10. luisport says:

    Off topic, but, canary islands swarm still ongoing, last 10 earthquakes (with couple of hours delay)

    http://www.avcan.org/index.php?m=Mapas&a=mapa&mf=53&l=en

    Like

  11. AWatchman4Him says:

    So why do you think the USGS is not showing anything over a 2.5 or greater in the region for the last 7 days?

    Like

  12. luisport says:

    Monday, 25 July, 2011 at 14:28 UTC
    Description
    The Canary Islands Government has said it is monitoring an earthquake swarm on the small island of El Hierro where in excess of 450 tremors of low magnitude have been recorded in the past week. The Ministry of Economy, Finance and Government Security Canary has convened the first ever meeting of the Steering Committee and Volcanic Monitoring, reflected in the Specific Plan Protection Civil and Emergency for Volcanic Risk, given what it described “the significant increase in seismic activity”. A statement (translated from Spanish) issued following the meeting outlined: “This committee met this morning (Friday) at the headquarters of the Directorate General Security and Emergency Tenerife, established after the assessment of information gathered from seismic and volcanological last July 17 by the National Geographic Institute (IGN) and Volcanological Institute of the Canary Islands, the situation is total normal for the green light for the information population, activating mechanisms for monitoring and oversight needed to coordinate the actions of self civil population and information contained in the Plan.”

    “According to data provided by the seismic monitoring station IGN’s located in Valverde, one can conclude that from the noon on July 17 there has been a significant increase of low magnitude seismic activity in the municipality of Border of the island of El Hierro. To improve the location of this activity, has deployed a seismic network densification operational since July 21 has helped increase the number of earthquakes located, and can be viewed at Web http://www.ign.es”, the statement added. Earthquakes, measuring between 1 and 3 on the Richter Scale continued during the weekend and into Monday. El Hierro, a 278.5 km2 island, is situated in the most southwestern extreme of the Canaries. The island was formed after three successive eruptions, and consequent accumulations, the island emerged from the ocean as an imposing triangular pyramid crowned by a volcano more than 2,000 metres high. The volcanic activity, principally at the convergence of the three ridges, resulted in the continual expansion of the island. A mere 50,000 years ago, as a result of seismic tremors which produced massive landslides, a giant piece of the island cracked off, crashed down into the ocean and scattered along the seabed.

    http://hisz.rsoe.hu/alertmap/site/?pageid=event_update_read&edis_id=EQ-20110724-31716-SPI&uid=11163

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  13. luisport says:

    More than 570 quakes so far in El Hierro…

    Like

  14. randal says:

    Thank you for all this information, information that we hear little about in the news here in America, U.S.

    Like

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