Archive forOctober, 2008

Technological Disaster

Eleven building workers died and 12 were injured after a crane container fell at a bridge construction site in southwest China. The accident occurred in heavy rain at around 10 p.m. on Tuesday on Furongjiang Bridge, which is under construction in a mountainous area in Haokou Township of Wulong County, Chongqing City. The steel cable, to which the container was attached, broke and it plunged on to the deck of the bridge. Nine workers were declared dead at the scene, and two died on the way to the hospital. The 12 injured workers were taken to Wulong County Hospital, where 11 of them were said to be in a serious condition. A rescue headquarters has been set up swiftly by security inspection staff, policemen, firefighters and sanitation workers of Wulong County. Liu Xuepu, vice mayor of Chongqing City, arrived at the site in two and a half hours after the accident to oversee the rescue process. Work safety officials are investigating the cause of the accident. )

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Strong quake hits Pakistan, at least 100 killed


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QUETTA, Pakistan – A strong earthquake struck villages in southwestern Pakistan before dawn Wednesday, killing at least 100 people, injuring scores more and destroying hundreds of homes, officials said.

The death toll was expected to rise as reports arrived from remote areas of Baluchistan province, an impoverished area bordering Afghanistan.

“It will be much more,” Sohail ur Rahman, a top civilian official in one of the affected districts, told Dawn News television.

Zamaruk Khan, the minister for revenue and rehabilitation, said “more than 100″ people have been found dead so far and the government is readying food, shelter and medical care for survivors.

A reporter for AP Television News saw dozens of bodies and injured in a hospital in Zaras, in the Ziarat district. A doctor there, Mohammed Irfan, said the hospital was unable to cope with the injured it was receiving.

The quake struck two hours before dawn and had a preliminary magnitude of 6.4, the U.S. Geological Survey reported. It was a shallow 10 miles below the surface and was centered about 400 miles southwest of the capital, Islamabad.

The worst-hit area appeared to be Ziarat, where hundreds of mostly mud and timber houses were destroyed in five villages, said the mayor, Dilawar Kakar. Some were buried in landslides triggered by the quake, he said.

Kakar said 120 about people were injured.

“Rescue work is being carried out by the villagers themselves, but a larger operation is needed here,” he said.

The army said it was rushing medical teams on helicopters to the affected villages.

Pakistan is prone to violent seismic upheavals. Wednesday’s quake was the deadliest since a magnitude-7.6 quake devastated Kashmir and northern Pakistan in October 2005, killing about 80,000 people and leaving hundreds of thousands homeless.

Baluchistan is home to a long-running separatist movement, but is not considered a major battle ground in the fight against Taliban insurgents that plague other border regions.

____

Associated Press writer Matiullah Achakzai contributed to this report from Chaman.

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Two quakes hit California


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Sun Oct 26, 2008 7:08am EDT

WASHINGTON (Reuters)WASHINGTON, October 26 (Reuters) – Two earthquakes shook northern California early Sunday but local officials said there were no immediate reports of injuries or damages.

A magnitude 4.6 quake occurred about 19 miles west of Petrolia, California, according to the U.S. Geological Survey. The town is about 265 miles north of San Francisco. The quake hit at 2:26 a.m. PST (0926 GMT) and was 11 miles deep, according to the USGS National Earthquake Center.

A second quake struck the same location about a minute later, the center said in a revised report. USGS originally reported that the second quake, measuring 4.1, hit near Fort Ross, California.

Magnitude 5 quakes are considered moderate and capable of causing considerable damage, while magnitude 4 quakes are considered light and capable of moderate damage.

Police in Humboldt and Sonoma counties said they had not received reports of damage or injuries.

(Writing by Stacey Joyce; Editing by Howard Goller and Bill Trott)

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Five Most Dangerous U.S. Earthquake Hotspots Beyond California


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Five Most Dangerous U.S. Earthquake Hotspots Beyond California

By Betsy Mason EmailOctober 20, 2008 | 8:03:55 PMCategories: Geology  

Useqhazmap California isn’t the only state with a serious earthquake hazard. There are several lesser-known fault zones lurking in other parts of the country that are just as dangerous, if not more dangerous, than the famed San Andreas Fault.

Some of these faults are capable of producing quakes bigger than the 1906 San Francisco quake, but because the time between major jolts is longer than in California, many people who live near these faults don’t even know they are there.

Here’s a closer look at five of the country’s most hazardous seismic hot spots outside of California.

Map: USGS

Cascadia_tsunami10houronlylg

A computer simulation of the 1700 Cascadia earthquake tsunami after 10 hours. Courtesy USGS.

The Pacific Northwest:

The biggest earthquakes in the country are not in California. A much greater hazard, at least in terms of sheer magnitude, exists to the north of the San Andreas Fault where the ocean crust is being forced beneath the North American continent.

Known as the Cascadia Subduction Zone, this 680-mile long stretch of colliding land mass 50 miles offshore of Oregon, Washington state and southern British Columbia is capable of generating magnitude 9 earthquakes 30 times more powerful than the worst the San Andreas can dish out.

“There are lots of other earthquakes that may happen first, but they won’t be as big,” said marine geologist Chris Goldfinger of Oregon State University in Corvallis.

An earthquake of this size would completely devastate the region, which includes Portland, Seattle and Vancouver. There could be thousands of deaths and unprecedented damage for a quake in this country. Major travel routes will be impassable. The shaking could last a full four minutes, which would damage or bring down structures that could have survived a shorter duration.

On top of the danger from shaking, within minutes, a tsunami would likely inundate the low-lying coastal areas. Cascadia is the same type of fault that caused the 2004 Sumatra quake and tsunami.

Fortunately, these mega quakes only come around once every few hundred years. Unfortunately, the fault may be due for another big one any day now.

The last monster quake that ruptured the entire length of the Cascadia fault occurred in 1700 and was around a magnitude 9. It created a tsunami that crossed the entire Pacific Ocean and caused damage along parts of the Japanese coast.

Scientists had calculated an average time between these major quakes of around 530 years. But Goldfinger’s recent research on marine landslides caused by earthquakes over the last 12,000 years has revealed many magnitude 8 earthquakes on the southern portion of the fault in the intervening years, bringing the average down to 270 years.

“It’s been 308 since the last one so the probability is much higher,” Goldfinger said. In fact, is new research on landslides puts the probability of a magnitude 8 or greater quake as high as 75 percent in the next 50 years.

Making matters worse, the region isn’t prepared.

“Portland has lots of unreinforced masonry buildings” that are likely to collapse in a major quake, Goldfinger said. “The retrofitting has barely begun.”

“It’s going to be a mess.”

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