Volcano’s collapse caused mega-tsunami (800 feet) 240 meters high – study

Tsunami
October 2015 WEST AFRICAThe sudden collapse of a volcano caused a tsunami that created waves up to 240 meters (800ft) high 73,000 years ago, scientists have discovered. The mega-tsunami took place near the Cape Verde islands off west Africa when the slopes of the volcano gave way – a process known as a “flank collapse” – and some experts fear a similar collapse could present a real threat today, especially around volcanic islands.
The lead scientist, Dr Ricardo Ramalho, now at Bristol University, and his team at Columbia University in New York, said: “Our point is that flank collapses can happen extremely fast and catastrophically, and therefore are capable of triggering giant tsunamis. They probably don’t happen very often. But we need to take this into account when we think about the hazard potential of these kinds of volcanic features.”
The sudden collapse of a volcano caused a tsunami that created waves up to 240 metres (800ft) high 73,000 years ago, scientists have discovered. The mega-tsunami took place near the Cape Verde islands off west Africa when the slopes of the volcano gave way – a process known as a “flank collapse” – and some experts fear a similar collapse could present a real threat today, especially around volcanic islands. The lead scientist, Dr Ricardo Ramalho, now at Bristol University, and his team at Columbia University in New York, said: “Our point is that flank collapses can happen extremely fast and catastrophically, and therefore are capable of triggering giant tsunamis. They probably don’t happen very often. But we need to take this into account when we think about the hazard potential of these kinds of volcanic features.”
The boulders, weighing up to 770 tonnes, matched marine-type rocks ringing the island’s shores and were quite unlike the volcanic terrain on which they were found. By calculating the energy needed to hurl the boulders such a distance, the scientists were able to estimate the size of the wave. Their findings are reported in the journal Science Advances. Prof Bill McGuire, a tsunami expert from University College London, believes such mega-tsunami events occur once every 10,000 years. He said: “Nevertheless, the scale of such events, as the Fogo study testifies, and their potentially devastating impact, makes them a clear and serious hazard in ocean basins that host active volcanoes.” –Guardian
This entry was posted in Avalanche, Black Swan Event, Earth Changes, Earth Watch, Earthquake Omens?, Extinction Threat, High-risk potential hazard zone, Infrastructure collapse, Islands sinking, Potential Earthchange hotspot, Prophecies referenced, Strange high tides & freak waves, Time - Event Acceleration, Tsunami, Volcanic Eruption. Bookmark the permalink.

5 Responses to Volcano’s collapse caused mega-tsunami (800 feet) 240 meters high – study

  1. Clint Hunter says:

    + not U.N.like Mount Toba https://en.wikipedia.org/wiki/Toba_catastrophe_theory in many regards , history repeats and the THODIN recycles , as the old Orobours wheel spins !

    Liked by 1 person

  2. Clint Hunter says:

    ~ this is Odin https://www.youtube.com/watch?v=ZUAlSerYryE&index=8&list=PL7B295CA758C802EC or Thodin , just to clear up any ambiguity in getting threw the Central Scruitiner bots , as they say in speaking threw gords , ehy !
    + a few other’s not U.N.like many of his kind in this YouTube Playlist

    Liked by 1 person

  3. archie1954 says:

    “West coast of Africa”? Wouldn’t that put the East coast of both the American continents in danger?

    Liked by 1 person

  4. Dennis E. says:

    yes,up to one hundred miles inland, some have said, depending on terrain, i think. This topic has been discussed before here because two years ago,I think, there were a number of earthquake swarms there and short video was posted showing the impact if the already crack portion of this volcano sled into the ocean.

    Like

  5. mtnwolf63 says:

    Computer Simulation – La Palma Mega Tsunami

    Liked by 1 person

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