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DANGEROUS VOLCANOES IN THE WORLD. A RE-ERUPTION OF 11 OF THE 1,500 ACTIVE VOLCANOES IS LIKELY TO BE VERY DEVASTATING, LOCALLY, REGIONALLY, AND GLOBALLY. Dr. Walter Hays, Global Alliance For Disaster Reduction . GLOBAL DISTRIBUTION OF 1,500 ACTIVE VOLCANOES.

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dangerous volcanoes in the world

DANGEROUS VOLCANOES IN THE WORLD

A RE-ERUPTION OF 11 OF THE 1,500 ACTIVE VOLCANOES IS LIKELY TO BE VERY DEVASTATING, LOCALLY, REGIONALLY, AND GLOBALLY

Dr. Walter Hays,

Global Alliance For Disaster Reduction

11 volcanoes the world hopes will not erupt again
Eyjafjallajökull and Katla (ICELAND)

Chaiten

Krakatau

Merapi

Vesuvius

Pinatubo

Mount Rainier

Nevada del Ruiz

Popocatepl

Nyirangongo (CONGO)

11 VOLCANOES THE WORLD HOPES WILL NOT ERUPT AGAIN
what makes a volcano especially dangerous
WHAT MAKES A VOLCANO ESPECIALLY DANGEROUS
  • Location and a large explosivity index (VEI) combine to make some volcanoes especially dangerous.
location near cities makes some volcanoes very dangerous

LOCATION NEAR CITIES MAKES SOME VOLCANOES VERY DANGEROUS

An eruption at some locations is certain to be devastating to people, their property, their health, the community infra-structure, the environment, and the economy.

slide8

The 800-meter fissure caused by the first eruption, which grew to 1.2 km in the second eruption, could be heading towards the Myrdalsjokall glacier, which sits atop the powerful Katla volcano

slide9

An eruption of the Katla volcano, located under the massive Myrdalsjokull icecap, could cause disastrous local flooding, explosive blasts, and eruption clouds that would disrupt air traffic between Europe and the USA.

chaiten erupt ed after 8 000 10 000 year dormancy
THE 1,200 M (3,550 FT) VOLCANO SENT ASH HIGH INTO THE SKY.

“VOLCANIC EARTHQUAKES WERE TRIGGERED IN THE AREA.

1,500 RESIDENTS EVACUATED, MOSTLY BY BOAT

CHAITEN ERUPTED AFTER 8,000-10,000 YEAR DORMANCY
krakatau
Krakatau
  • 26-27 August, 1883
  • The big one!

http://www.geology.sdsu.edu/how_volcanoes_work/Krakatau.html

the 1883 krakatoa eruption
The 1883 Krakatoa Eruption

!

Anak Krakatoa—Son of Krakatoa

indonesia s mount merapi erupted in may june 2006
INDONESIA’S MOUNT MERAPI ERUPTED IN MAY & JUNE, 2006
  • Mount Merapi emitted lava, debris, and a pyroclastic flow on May 15, but this one was not devastating.
mount somma vesuvius
Mount Somma-Vesuvius
  • Location: Bay Naples, east of the city of Naples, Italy
  • Last eruption: March, 1944
slide21

Pinatubo was the second largest eruption of the 20th century and the largest to impact a densely populated area.

slide27

The lahar generated by the eruption of Nevada del Ruiz buried 25,000 people in the city of Armero as they slept.