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Volcanoes

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... similar at Karymwky; the seismicity suggests that daily eruptions produced ... In average, 270-470 earthquakes occurred per day over the last two weeks! ... – PowerPoint PPT presentation

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Title: Volcanoes


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The Good, The Bad The Hopeless!
  • Volcanoes are powerful things. Many erupt nearly
    every day.
  • Here is an example of an erupting volcano.
  • Karymsky, Kamchatk Peninsula, Russia is where
    this amazing volcano erupts almost every day.

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Russias most active volcano!
  • Activity remained similar at Karymwky the
    seismicity suggests that daily eruptions produced
    plumes up to 3.5 km. Between the 12th and 19th
    of April, up to 400 small explosions (gt1.5km
    high) occurred per day one of them was, however,
    large and rose to 4.6 km above sea level. In
    average, 270-470 earthquakes occurred per day
    over the last two weeks!

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The Biggest epuption Ever!
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The Biggest Erruption ever!
  • I'm not sure if there is any agreement on the
    largest eruption ever. Almost certainly it was
    some pre-historic eruption from one of the large
    rhyolite calderas that occur in association with
    subduction zones. Some candidates are the Toba
    eruption in Sumatra, the Taupo eruption in New
    Zealand and the Oruanui eruption in New Zealand.

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The Disgrace of Volcanoes!
Some eruptions are relatively quiet, producing
lava flows that creep across the land at 2 to 10
miles per hour. Explosive eruptions can shoot
columns of gases and rock fragments tens of miles
into the atmosphere, spreading ash hundreds of
miles downwind. Lateral blasts can flatten trees
for miles. Hot, sometimes poisonous, gases may
flow down the sides of the of the volcano
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Fire Volcano!
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Some Of The Worst!
  • Killer landslides in Venezuela and Mexico.
    Devastating earthquakes in Turkey and Taiwan.
    Massive floods along the East Coast of the United
    States. Nature has dealt staggering blows to the
    Earth and its people in 1999. But these were not
    the worst disasters of the century, either in the
    power of the events or in the loss of life and
    property that they caused.

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  • The costs of natural disasters -- lives lost,
    homes destroyed, economies disrupted -- have
    skyrocketed in this century, as the world's
    population has grown and has moved onto areas
    that are vulnerable to earthquakes, hurricanes,
    landslides, and other natural hazards," said USGS
    Director Chip Groat. "But there is reason for
    hope. By understanding how and where these
    natural events occur, so that we can build and
    live safely on the Earth, and by providing
    real-time information about floods, earthquakes,
    and other hazards, so that we can respond
    effectively when disaster strikes, the USGS is
    helping build stronger, safer communities that
    are resilient to natural disaster.

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Thank you for your time and co-operation!!! By
Rachel Burras
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