5.2 Magnitude Earthquake Rocks Midwest

April 18, 2008

A 5.2-magnitude earthquake centered in southern Illinois rattled homes and skyscrapers across the Midwest early Friday, causing little damage but surprising residents unaccustomed to such a powerful temblor.

The quake — one of the strongest ever recorded in Illinois — occurred just before 4:37 a.m. and was centered six miles southeast of West Salem, Ill., and 45 miles west of Evansville, Ind.

Initially pegged as a 5.4 earthquake, the U.S. Geological Survey revised its estimate to give it a value of 5.2.

Two aftershocks during the next three hours measured 2.6 and a 2.5, the agency reported.

The strongest earthquake recorded in Illinois was in 1968, a 5.3-magnitude temblor centered near Dale in Hamilton County, about 75 miles southeast of St. Louis, according to the USGS. Minor damage was widespread, but there were no serious injuries or fatalities.

West Salem is in Edwards County, and dispatcher Lucas Griswold said the sheriff’s department received several calls about the earthquake but only reports of minor damage and no injuries.

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Colombian Authorities Issue Volcano Warning as Nevado del Huila Erupts

April 15, 2008

Colombian authorities have issued a Volcano Warning as Nevado del Huila Erupts.

The Nevado del Huila, which is topped with a crown of ice, is Colombia’s third-highest peak at 18,484 feet. Located 170 miles southwest of Bogota, it became active again in March 2007 with a series of internal rumblings.

The Nevado del Huila volcano’s eruptions in 2007 were its first on record since Colombia was colonized by the Spanish 500 years ago.

There are about 10,000 people living in the area around the volcano.

Oregon Quake Swarm - 600 Earthquakes In 10 Days

April 13, 2008

Scientists listening to underwater microphones have detected an unusual swarm of earthquakes off central Oregon, something that often happens before a volcanic eruption - except there are no volcanoes in the area.

Scientists don’t know exactly what the earthquakes mean, but they could be the result of molten rock rumbling away from the recognized earthquake faults off Oregon, said Robert Dziak, a geophysicist for the National Oceanic and Atmospheric Administration and Oregon State University.

There have been more than 600 quakes over the past 10 days in a basin 150 miles southwest of Newport. The biggest was magnitude 5.4, and two others were more than magnitude 5.0, OSU reported.

On the hydrophones, the quakes sound like low thunder and are unlike anything scientists have heard in 17 years of listening, Dziak said. Some of the quakes have also been detected by earthquake instruments on land.

The hydrophones are left over from a network the Navy used to listen for submarines during the Cold War. They routinely detect passing ships, earthquakes on the ocean bottom and whales calling to one another.

Scientists hope to send out an OSU research ship to take water samples, looking for evidence that sediment has been stirred up and chemicals that would indicate magma is moving up through the Juan de Fuca Plate, Dziak said.

The quakes have not followed the typical pattern of a major shock followed by a series of diminishing aftershocks, and few have been strong enough to be felt on shore.

The Earth’s crust is made up of plates that rest on molten rock, which are rubbing together. When the molten rock, or magma, erupts through the crust, it creates volcanoes.

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Earthquakes Along The Cascadia And San Andreas Faults May Be Linked

April 9, 2008

Seismic activity on the southern Cascadia Subduction fault may have triggered major earthquakes along the northern San Andreas Fault, according to new research published by the Bulletin of Seismological Society of America (BSSA). The research refines the recurrence rate for the southern portion of the Cascadia fault to approximately every 220 years for the last 3000 years.

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Silent Famine Sweeps Globe

April 3, 2008

From India to Africa to North Korea to Pakistan and even in New York City, higher grain prices, fertilizer shortages and rising energy costs are combining to spell hunger for millions in what is being characterized as a global “silent famine.”

Global food prices, based on United Nations records, rose 35 percent in the last year, escalating a trend that began in 2002. Since then, prices have risen 65 percent.

Last year, according to the U.N. Food and Agriculture Organization’s world food index, dairy prices rose nearly 80 percent and grain 42 percent.

“This is the new face of hunger,” said Josetta Sheeran, director of the World Food Program, launching an appeal for an extra $500 million so it could continue supplying food aid to 73 million hungry people this year. “People are simply being priced out of food markets. … We have never before had a situation where aggressive rises in food prices keep pricing our operations out of our reach.”

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Slab of Antarctic Ice Shelf Collapses

March 26, 2008

Satellite images show that a large hunk of Antarcticas Wilkins Ice Shelf has started to collapse in a fast-warming region of the continent, scientists said on Tuesday.

The area of collapse measured about 160 square miles 415 square km of the Wilkins Ice Shelf, according to satellite imagery from the University of Colorados National Snow and Ice Data Center.

The Wilkins Ice Shelf is a broad sheet of permanent floating ice that spans about 5,000 square miles 13,000 square km and is located on the southwest Antarctic Peninsula about 1,000 miles 1,600 km south of South America.

“Block after block of ice is just tumbling and crumbling into the ocean,” Ted Scambos, lead scientist at the National Snow and Ice Data Center, said in a telephone interview.

“The shelf is not just cracking off and a piece goes drifting away, but totally shattering. These kinds of events, we dont see them very often. But we want to understand them better because these are the things that lead to a complete loss of the ice shelf,” Scambos added.

Scambos said a large part of the ice shelf is now supported by only a thin strip of ice. This last “ice buttress” could collapse and about half the total ice shelf area could be lost in the next few years, Scambos added.

British Antarctic Survey scientist David Vaughan said in a statement: “This shelf is hanging by a thread.”

Historic Flood Forecast For Arkansas - Engineers Scramble

March 24, 2008

High water pouring down the White River could cause historic flooding in cities along its path in eastern Arkansas, forecasters warned Sunday.

The river, one of many out of its banks across wide areas of the Midwest, could top levels recorded in a devastating flood 25 years ago, National Weather Service meteorologist John Robinson warned.

“There will be water going into areas where people have not seen it before, and may not be expecting to see high water,” Robinson wrote in an e-mail to reporters Sunday.

A tributary of the White River, the Black River, ruptured a levee in two places Saturday near Pocahontas, said Renee Preslar, a spokeswoman for the Arkansas Department of Emergency Management. That stream has been bloated by water pouring downstream from hard-hit southeastern Missouri.

Preslar said the levee breaks allowed flooding in outlying areas but she did not have details on what might have been damaged.

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Nearly 20 Earthquakes Shake The San Francisco Bay Area

March 22, 2008

If you live in the East Bay your house may have rattled overnight. Nearly two dozen earthquakes have hit the Dublin area since Thursday afternoon. Three more small shakers were recorded early Friday morning.

This comes as a new report warns that the Bay Area is not ready for the big one coming on the Hayward fault.

Geologists say that with a cluster of quakes like this - the Bay Area could continue to feel the quakes for the next several days or even weeks.

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Rare Earthquake Shakes Connecticut

March 12, 2008

Scientists say it was a small earthquake that shook houses in Chester and surrounding towns.

The U.S. Geological Survey says it recorded a 2.0 magnitude earthquake early Tuesday morning three miles northwest of the center of Chester.

Many people in the area called 911 to report that their houses were shaking. The state police dispatched troopers, but they weren’t able to find any reason for the shaking.

Earthquakes are unusual in Connecticut.

Global Food Shortages Loom As Wheat Crop Shrinks

March 3, 2008

The world is only ten weeks away from running out of wheat supplies after stocks fell to their lowest levels for 50 years.

The crisis has pushed prices to an all-time high and could lead to further hikes in the price of bread, beer, biscuits and other basic foods.

It could also exacerbate serious food shortages in developing countries especially in Africa.

The crisis comes after two successive years of disastrous wheat harvests, which saw production fall from 624m to 600m tonnes, according to the United Nations’ Food and Agriculture Organisation (FAO).

Experts blame climate change as heatwaves caused a slump in harvests last year in eastern Europe, Canada, Morocco and Australia, all big wheat producers.

Booming populations and a switch to a meat-rich diet in the developing world also mean that about 110m tons of the world’s annual wheat crop is being diverted to feed livestock.

Short term pressures have compounded the problem. Speculative buying by investors gambling on further price rises has further pushed up prices.

Though shortages are often blamed on the use of land for biofuel crops, the main biofuel cereal crop is maize, not wheat. Farmers have brought millions of acres of fallow land into production and the FAO predicts that the shortages could be eliminated within 12 months.

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