Volcanoes
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Bizarro Earth

Shiveluch volcano spews ash 10.7km above sea level

The Shiveluch volcano on Russia's Far Eastern Kamchatka Peninsula on Thursday ejected an ash cloud to as high as nearly 11km above the sea level, the Itar-Tass news agency reported. An ash column from the volcano rose to a height of 10.7km above the sea level.

There was no immediate threat for the population, and no emissions of volcanic dust were monitored in neighboring villages. Two earthquakes were registered at the volcano over the past 24 hours, which was given the highest Red Aviation Code. This was the most powerful eruption of ash registered at Shiveluch this year. Shiveluch has been active for more than four weeks.
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© Google

Bizarro Earth

Volcano Watch: Heavy Breathing in Santorini

Santorini volcano
© Simm, Wikimedia CommonsBuildings perched on the rim on Santorini volcano.
The iconic white roofs of the Greek isles of Santorini may not stay that way forever. Those buildings are perched, after all, on the rim of a massive underwater volcano blamed for destroying the Minoan civilization of Crete. And it's restless.

About 3600 years ago, at the height of Minoan civilization, Santorini let loose with one of the largest volcanic eruptions in history. The explosion blanketed nearby islands with piles of ash hundreds of feet thick and sent out a gigantic tsunami that devastated Crete, about 68 miles to the south.

Smaller eruptions across the ensuing millennia ended abruptly in 1950. Then, after 60 years of calm, the caldera reawakened early last year with an escalating swarm of earthquakes. When geologists took a closer look, they could see the ground was swelling as well, as though the sleeping giant were yawning.

The earthquakes and ground deformation scientists observed between 2011 and early 2012 are unprecedented since the 1950 eruption. But just because a volcano is sucking in breath doesn't mean it will spew. Iceland's Eyjafjallajökull stratovolcano really let loose in 2010 after its own swarm of deformation-driven tremors, but Long Valley caldera in California has been breathing heavily since 1980 with no eruption at all.

So, what's in store for Santorini?

Bizarro Earth

Popocatepetl time-bomb? Residents too afraid to sleep, 'It's making sounds we never heard before'

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© Marco Ugarte, APThe Popocatepetl volcano releases ash and steam during an eruption as seen from Cholula, Mexico.
Xalitzintla - Residents at the foot of Mexico's Popocatepetl volcano no longer sleep soundly since the towering mountain roared back into action over a week ago, spewing out a hail of rocks, steam and ash. "We close our eyes, but we don't sleep much. In the past, there was only smoke but this time it's stronger," said Francisco Jimenez, who lives in the nearby town of Xalitzintla in central Mexico, 55km from Mexico City.

The volcano, Mexico's second highest peak at 5 452m, started rumbling and spurting high clouds of ash and steam on 13 April, provoking the authorities to raise the alert to level five on a seven-point scale. The alert extended a security cordon around the volcano but stopped short of starting evacuations of about 685 000 residents from nearby communities.

Over the weekend, residents watched as Popocatepetl, which means "smoking mountain" in the indigenous Nahuatl language, lived up to its name, spouting glowing rocks and shaking the ground beneath their feet. "When we went out to see, my son cried: 'We have to leave!' We were ready to leave for Mexico City but then it calmed down a bit," said 67-year-old Leopolda Perez of Xalitzintla.

Bizarro Earth

Volcano Behind Atlantis Legend Re-Awakens

Island of Santorini
© NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science TeamOne of the largest volcanic eruptions in the past 10,000 years occurred in approximately 1620 BC on the volcanic island of Santorini in the Aegean Sea. Following the 1620 BC eruption, much of the previous island of Santorini was destroyed or submerged; this event may have been the inspiration for the legend of the lost continent of Atlantis.
The volcano that may have given rise to the legend of Atlantis has awakened, researchers say.

The cataclysmic eruptions at the Greek isle of Santorini about 3,600 years ago that spewed forth about 9.5 to 14.3 cubic miles (40 to 60 cubic kilometers) of lava devastated the ancient seafaring Minoan civilization, potentially inspiring the legend of the lost city of Atlantis. From the air, the resulting caldera, or volcanic crater, appears as a small cluster within the larger collection of Greek islands in the Aegean Sea.

Over the next four millennia, the largely underwater caldera at Santorini has experienced a series of smaller eruptions, with five such outbursts in the past 600 years, ending most recently in 1950.

After a 60-year lull, Santorini awakened in January 2011 with a swarm of tremors, each magnitude 3.2 or less, new GPS research has revealed.

Bizarro Earth

Popocatepetl Volcanic Eruption: Mexico Villages Rocked

Popocatepetl Volcano
© Associated PressA plume of ash and steam rises from Popocatepetl volcano in Mexico.
A 17,886ft volcano outside Mexico City has exhaled dozens of towering plumes of ash and shot fragments of glowing rock down its slopes, frightening the residents of surrounding villages with hours of low-pitched roaring not heard in a decade.

A white cloud of ash, gas, water vapour and superheated rock spewed from the cone of Popocatepetl high above the village of Xalitzintla, whose residents said they were awakened by a window-rattling series of eruptions.

Mexico's National Disaster Prevention Centre said that a string of eruptions had ended in the early morning, then started up again at 5.05am, with at least 12 in two hours.

"Up on the mountain, it feels incredible," said Aaron Sanchez Ocelotl, 45, who was in his turf grass fields when the eruptions happened. "It sounds like the roaring of the sea."

The white cone of Popo, as most call the mountain, is an iconic backdrop to Mexico City's skyline on clear days, but its 40-mile distance means even a moderately large eruption is unlikely to do more than dump ash on one of the world's largest metropolitan areas.

It is a different matter for the villages on the flanks of the volcano, where the quiet of the corn fields and fruit orchards was pervaded by the volcano's spooky roaring.

"Everyone needs to take this seriously. This buzzing, this roaring isn't normal," said Gregorio Fuentes Casquera, the assistant mayor of Xalitzintla, a village of 2,600 people about seven miles from the summit. He said the town had prepared 50 buses and was sending out its six-member police forces to alert people to be ready to evacuate.

Bizarro Earth

Colombia prepares for imminent eruption of Nevado del Ruiz volcano

Colombia's government has called for high risk areas to be prepared for the eruption of the Nevado del Ruiz volcano.

The Interior Ministry has ordered the fire departments of 19 municipalities in the central Caldas and Tolima departments to be on high alert after the Colombian Geological Survey (SGC) announced that an eruption is "probable" in the coming days or weeks.
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© El Liberal
The alert level was raised from yellow to orange in March as the volcano became increasingly active. Last week a column of gas and steam approximately 1,200 meters tall extended from its crater.

The national director of the firefighting system warned that there is urgent need for a special contingency plan that outlines tactics to be used in emergency volcanic situations, especially for search and rescue groups. He called for a focus on high risk areas in or near the paths of rivers that originate in the Ruiz, whose levels may be elevated by pyroclastic fragments and the melting of ice.

Phoenix

Popocatépetl Volcano Erupts Spewing Hot Rock Fragments and Ash in Mexico

Popocatepetl volcano
© APBirds fly in the foreground as a plume of ash and steam rise from Popocatepetl volcano as seen from San Andres Cholula, Mexico, Wednesday April 18, 2012. Mexico's Popocatepetl volcano is continuing to spout gases and hot rock fragments and it is dusting towns on its flanks with volcanic ash.
A volcano within view of Mexico City continues to erupt.

Steam, smoke and hot fragments of rock began to be ejected from Popocatepetl this past weekend.

The volcano is located about 50 miles southeast of Mexico's capital, Mexico City. The metropolitan area of Mexico City is home to approximately 21 million people.

According to Reuters, Mexico's National Center for Disaster Prevention this week raised the alert level to three on a scale from one to seven, with seven being the greatest threat.

If eruptions intensify, evacuations of nearby villages may be necessary.

Bizarro Earth

Mexico's Erupting Popocatépetl Volcano Spied from Above

Popocatépetl Volcano
© NOAAThe Suomi NPP satellite snapped this image of Mexico's Popocatépetl volcano on April 16, 2012 after a new eruption that sent an ash plume high into the sky.
Mexico's Popocatépetl volcano, which lies only about 40 miles away from Mexico City, dusted nearby areas with ash this week in one of its largest explosions in recent years. The eruption, combined with a billowing plume of steam and ash and increased seismic activity, has prompted authorities to raise the volcano's alert status and advise people to stay at least seven miles away from the summit.

The eruption covered about 30 communities with ash, ranging from a light dusting to up to 7 centimeters (2.8 inches), according to Wired's Eruptions Blog.

There are signs that new magma inside the volcano is near the surface, says Eruptions Blog author Erik Klemetti, a professor of geosciences at Denison University in Ohio.

Popocatépetl, whose name means "smoking mountain" in Aztec, is the second highest volcano in North America, at 17,802 feet (5,426 meters). Only Mexico's Pico de Orizaba is taller.

The volcano's alert status has been raised to Yellow Stage 3, the third highest stage, by Mexico's National Center for Prevention of Disasters. There are seven total alert stages.

Bizarro Earth

Mexico's Popocatépetl Sleeping Volcano Awakens

steam rises from the Popocatepetl volcano
© Joel Merino / APA plume of steam rises from the Popocatepetl volcano seen from the city of Puebla, Mexico, Saturday April 14, 2012.
Popocatépetl, the nearly 18,000 foot volcano that hovers like a sentinel on the southeastern fringe of Mexico's capital, awakened again Sunday, punctuating an especially shaky seismic season.

Popo, as the mountain is widely called, spewed at least seven exhalations overnight Saturday and through the day Sunday, sending vapor, smoke and gas billowing into the clear sky. The most serious occurred just after 9 a.m. Sunday, sending a vapor cloud a mile into the air.

Mexico's National Disaster Prevention Center issued a precautionary warning to residents, advising them to stay alert for a worsening situation and to keep at least seven miles away from the volcano's crater.

The service predicted continuing "moderate exhalations, some with ash, sporadic low to moderate explosions with likely burning fragments emitted close to the crater, and flaming magma within the crater visible at night."

Popo's latest fuming comes amid a series of earthquakes striking southern and central Mexico in the past three weeks. Several 6 magnitude quakes struck Wednesday, but no damage. A midday 7.4 quake on March 20 damaged hundreds of buildings in Oaxaca and Guerrero states and sent hundreds of thousands of residents scrambling into Mexico City's streets.

Bizarro Earth

Italy's Mt. Etna volcano rocked by 6th eruption in 2012

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© Unknown
Mount Etna is erupting for the sixth time this year with lava and plumes of smoke and ash from a new crater on the volcano's southeast side. The new activity was preceded by new phase that began last night and that, according to experts from the INGV in Catania, has the same characteristics as the one before this one. Ash, carried by wind towards the east, has not yet created problems at the Fontanarossa airport, which is fully operational.