A vocanology of mountain etna

HVO image fromperson for scale. It is pictured above rising 13, ft. SinceMauna Loa has erupted 39 times; its last eruption was in According to USGS estimates, the volcano has erupted an average of once every 6 years over the past

A vocanology of mountain etna

The volcano's namesake town of 4, just 6 miles from the spewing crater, was devastated by falling ash and floods. The eruption claimed at least one life and serves as a stark reminder that slumbering volcanoes pose grave dangers.

Click on the "Next" label to learn about seven more dangerous volcanoes around the world. Is Mount Vesuvius the most dangerous? Despite the dark history, millions of people today live near the volcano.

The thriving mass of humanity in such close proximity to the volcano makes Vesuvius a serious contender for the world's most dangerous volcano.

Scientists fear that a catastrophic eruption could hurl scalding gas-rich magma, water vapor and debris at the masses with insufficient warning time for an evacuation. Puebla, a town of 2 million, lies 30 miles to the west.

A major eruption, scientists say, could choke the skies with ash and send massive mudslides into the crowded valleys below. The result could prove catastrophic. The volcano has been relatively quiet since a bout of activity between andthough it rumbled back to life inas shown in this image, prompting evacuation orders and worries that "Popo" is ready to blow.

Will spirits warn when Merapi is ready to go? In60 people were killed by a searing gas cloud, and about 1, people died when it erupted in During a bout of eruptions inmany villagers, including the woman in this picture, refused orders to evacuate.

They believe the spirits will warn when a catastrophic eruption is imminent. They usually ooze slow enough that people can easily outrun them. That's not the case with the lava that flows from Nyirangongo in Africa's Democratic Republic of Congo.

It has very low levels of silica, the mineral that thickens and slows lavas. InNyirangongo's lava suddenly gushed at speeds up to 60 mph into the town of Goma, which is home to half a million people. Scientists fear that lava pooling in the crater could suddenly drain again and cause even more devastation.

Will disaster of Nevada del Ruiz be repeated?

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Pyroclastic flows melted the summit's snowcap. Mudflows, called lahars, raced down the mountainside. One mudflow wiped out the village of Chinchina and killed 1, people, according to reports. A second followed the same path as earlier lahars and swept away the town of Armero, shown in this image.

An estimated 23, people died, making it Colombia's worst natural disaster. Scientists said an early warning system could have averted the loss of life. Now that one is in place, will it work when the volcano wakes again?

Mt. Etna, Sicily Stock Photo: - Alamy

Is majestic Mount Fuji overdue for an eruption? The majestic Mount Fuji, shown here, has not erupted sincebut a swarm of low-frequency earthquakes in and raised the specter that the mountain was awakening from its year slumber. Though Fuji has since quieted down, the risk to Tokyo, a city of 30 million people just 70 miles to the east, is very real, scientists say.

It is also a big threat, according to scientists. An estimated 3 million people live in its shadow — at leaston top of old mudflows from previous eruptions.

The flows, known as lahars, are the greatest risk. Though commonly associated with major eruptions that strike with ample warning, an earthquake or small burp of rock, ash and gas could also trigger a lahar, giving residents in the path only 10 to 15 minutes to escape.Mount Etna is one of the most active volcanoes in the world and is in an almost constant state of activity.

The fertile volcanic soils support extensive agriculture, with vineyards and orchards spread across the lower slopes of the mountain and the broad Plain of .

Mount Etna | Eruptions, History, & Facts | ashio-midori.com

Dec 22,  · Mount Etna is the largest active volcano in Europe. The oldest volcanic deposits are , years old and the constant activity of the volcano has been noted for the last 3, years, especially. ROME — Scientists, tourists and a television news crew were among 10 people injured in a “violent explosion” Thursday when magma spewing from Sicily's Mount Etna hit .

Volcanology (also spelled vulcanology) is the study of volcanoes, lava, magma, and related geological, geophysical and geochemical phenomena.

A vocanology of mountain etna

The term volcanology is derived from the Latin word vulcan. Mauna Loa, or "Long Mountain" in Hawaiian, is located on the island of Hawaii. It is pictured above rising 13, ft. (4, m) above sea level (this photo was taken from . Mount Etna is one of the world’s most active volcanoes and is in an almost constant state of activity.

The fertile volcanic soils support extensive agriculture, with vineyards and orchards spread across the lower slopes of the mountain and the broad Plain of .

Hawaii Center for Volcanology | Home