Archive forApril, 2009

SULFUR DIOXIDE LOOP

SULFUR DIOXIDE LOOP: A loop of sulfur dioxide gas approximately 600 miles in diameter is swirling off the coast of California. It came from Alaska where Mt. Redoubt unleashed its biggest eruption yet on April 4th. Click on the image to launch a 4-day animation of the volcano’s SO2 emissions:


Data source: The GOME-2 sensor onboard Europe’s MetOp-A satellite

The April 4th eruption produced a long plume of stratospheric SO2 which has since split. Half is drifting across the northern reaches of Canada; the other half is having a close encounter with the Pacific coast of North America.

Sulfur dioxide and associated aerosols have been known to produce sunsets of exceptional beauty. Examples from the 2008 eruption of Kasatochi may be found here and here. Readers in the path of Redoubt’s clouds should be alert for rare colors and rays in the evening sky.

Tags: Aerosols, Animation, Close Encounter, Clouds, Coast Of California, Data Source, Diameter, Emissions Data, Evening Sky, Mt Redoubt, North America, Pacific Coast, Plume, Rare Colors, Reaches, Satellite, Split Half, Sulfur Dioxide Gas, Sunsets, Volcano

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Italy: More than 70 dead, 1,500 injured in quake

L’AQUILA, Italy – A powerful earthquake in mountainous central Italy knocked down whole blocks of buildings early Monday as residents slept, killing more than 70 people in the country’s deadliest quake in nearly three decades, officials said. Tens of thousands were homeless and 1,500 were injured.

Ambulances screamed through the medieval city L’Aquila as firefighters with dogs worked feverishly to reach people trapped in fallen buildings, including a dormitory where half a dozen university students were believed still inside.

Outside the half-collapsed building, tearful young people huddled together, wrapped in blankets, some still in their slippers after being roused from sleep by the quake. Dozens managed to escape as the walls fell around them.

“We managed to come down with other students but we had to sneak through a hole in the stairs as the whole floor came down,” said Luigi Alfonsi, 22. “I was in bed — it was like it would never end as I heard pieces of the building collapse around me.”

In the historic center of the city, a wall of the 13th century Santa Maria di Collemaggio church collapsed and the bell tower of the Renaissance San Bernadino church also fell. The 16th castle housing the Abruzzo National Museum was damaged.

L’Aquila, capital of the Abruzzo region, was near the epicenter about 70 miles (110 kilometers) northeast of Rome. It is a quake-prone region that has had at least nine smaller jolts since the beginning of April. The quake struck at 3:32 a.m. The U.S. Geological Survey said the big quake was magnitude 6.3, but Italy’s National Institute of Geophysics put it at 5.8 and more than a dozen aftershocks followed.

More than 70 people were killed and the death toll was likely to rise, civil protection chief Guido Bertolaso said as rescue crews clawed through the debris of fallen homes. Some 1,500 people were injured.

The quake hit 26 towns and cities around L’Aquila, which lies in a valley surrounded by the Apennine mountains. Castelnuovo, a hamlet of about 300 people 25 kilometers (15 miles) southeast of L’Aquila, appeared hard hit, and five were confirmed dead there. Another small town, Onno, was almost completely leveled.

“A few houses have remained standing, but just a few,” Stefania Pezzopane, provincial president of L’Aquila, told Corriere della Sera.

L’Aquila Mayor Massimo Cialente said about 100,000 people were homeless. It was not clear if that estimate included surrounding towns. Some 10,000 to 15,000 buildings were either damaged or destroyed, officials said.

Premier Silvio Berlusconi declared a state of emergency, freeing up federal funds to deal with the disaster, and canceled a visit to Russia so he could deal with the quake crisis.

Condolences poured in from around the world, including from President Barack Obama, Pope Benedict XVI and Abdullah Gul, president of quake-prone Turkey.

Slabs of walls, twisted steel supports, furniture and wire fences were strewn about the streets of L’Aquila, and gray dust carpeted sidewalks, cars and residents.

Residents and rescue workers hauled away debris from collapsed buildings by hand. Firefighters pulled a woman covered in dust from the debris of her four-story home. Rescue crews demanded quiet as they listened for signs of life from other people believed still trapped inside.

A body lay on the sidewalk, covered by a white sheet.

Parts of L’Aquila’s main hospital were evacuated because they were at risk of collapse, and only two operating rooms were in use. Bloodied victims waited in hospital hallways or in the courtyard and many were being treated in the open. A field hospital was being set up.

In the dusty streets, as aftershocks rumbled through, residents hugged one another, prayed quietly or frantically tried to call relatives. Residents covered in dust pushed carts full of clothes and blankets that they had thrown together before fleeing their homes.

“We left as soon as we felt the first tremors,” said Antonio D’Ostilio, 22, as he stood on a street in L’Aquila with a huge suitcase piled with clothes. “We woke up all of a sudden and we immediately ran downstairs in our pajamas.”

Evacuees converged on an athletics field on the outskirts of L’Aquila where a makeshift tent camp was being set up. Civil protection officials distributed bread and water to people who lay on the grass next to heaps of their belongings.

“It’s a catastrophe and an immense shock,” said resident Renato Di Stefano, who was moving with his family to the camp as a precaution. “It’s struck in the heart of the city, we will never forget the pain.”

Civil protection official Agostino Miozzo said the aim was to give everyone shelter by nightfall.

“This means that the we’ll have several thousand people to assist over the next few weeks and months,” he told Sky Italia.

At least one student from Greece was trapped in the debris and another was injured, the Greek Foreign Ministry said. Greece offered to send a rescue team to help, the ministry said.

The Israeli Embassy in Rome said officials were trying to make contact with a few Israeli citizens believed to be in the region who had not been in touch with their families. Embassy spokeswoman Rachel Feinmesser did not give an exact number.

The last major quake to hit central Italy was a 5.4-magnitude temblor that struck the south-central Molise region on Oct. 31, 2002, killing 28 people, including 27 children who died when their school collapsed.

Tags: 13th Century, Abruzzo Region, Aftershocks, Alfonsi, Aquila Capital, Aquila Italy, Associated Press, Bell Tower, Building Collapse, Central Italy, Early Monday, Epicenter, Jolts, Medieval City, Prone Region, Protection Chief, Rescue Crews, San Bernadino, Three Decades, U S Geological Survey

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Strong earthquake hits central Italy

Sun Apr 5, 2009 10:11pm EDT

I

ROME (Reuters) – An earthquake measuring 6.3 on the Richter scale rocked central Italy on Monday and was felt in the capital Rome, but there was no immediate word of casualties or damage.

The U.S. Geological Survey said the epicenter of the quake, which struck in the early hours at about 0235 GMT, was believed to be some 53 miles northeast of Rome. It initially put the scale of the quake at 6.7 but later lowered it 6.3

Some residents of Rome, which is rarely hit by seismic activity, were woken by the quake.

Earthquakes can be particularly dangerous in parts of Italy where centuries-old buildings are left in disrepair.

Tags: Casualties, Central Italy, Centuries, Disrepair, Earthquake, Earthquakes, Epicenter, Gmt, Old Buildings, Quake, Reuters, Richter Scale, Rome, Seismic Activity, Sun Apr, Thomson, U S Geological Survey

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REDOUBT ERUPTS AGAIN:

Mt. Redoubt erupted again on April 4th (13:58 UTC), spewing a plume of ash, water vapor and sulfurous gases at least 50,000 feet high. While the gaseous emissions are entering the stratosphere and blowing away, much of the ash is falling back to Earth. “This photo,” reports Thomas Kerns, “is from our home near Beluga Lake in Homer, Alaska,” where falling ash has turned the ground moondust-gray:

“Later,” he says, “the wind picked up and began blowing the dust around.” His photo of the ash storm shows why dust masks are selling briskly in Alaska these days.

Meanwhile in Earth orbit, the GOME-2 (Global Ozone Monitoring Experiment) sensor onboard Europe’s MetOp-A satellite is tracking a sulfur dioxide cloud emitted by the April 4th eruption: image. The cloud will probably move across North America in the days ahead. Sky watchers should keep an eye out for volcanic sunsets.

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