Title: Volcanoes
1 2The 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.
3Russias 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!
4The Biggest epuption Ever!
5The 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.
6The 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
7Fire Volcano!
8Some 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.
9- 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.
10Thank you for your time and co-operation!!! By
Rachel Burras