A moderate earthquake that rattled parts of Arkansas and Tennessee Thursday [Feb. 2005] should serve as a wake-up call to the central United States about the potential for much stronger events, experts said.
The temblor, preliminarily put at magnitude 4.1, shook eastern Arkansas and western Tennessee early in the morning. It was centered 47 miles north-northwest of Memphis.
There were no reports of significant damage.
"Although today's earthquake was what we characterize as 'light,' this area is capable of producing an earthquake that can result in significant loss of life and property damage," said Charles "Chip" Groat, director of the U.S. Geological Survey.
Groat pointed out that the region was host to the strongest earthquake on record in the lower 48 United States.
Earth Changes
The eruption of a super volcano "sooner or later" will chill the planet and threaten human civilization, British scientists warned Tuesday.
And now the bad news: There's not much anyone can do about it.
Several volcanoes around the world are capable of gigantic eruptions unlike anything witnessed in recorded history, based on geologic evidence of past events, the scientists said. Such eruptions would dwarf those of Mount St. Helens, Krakatoa, Pinatubo and anything else going back dozens of millennia.
And now the bad news: There's not much anyone can do about it.
Several volcanoes around the world are capable of gigantic eruptions unlike anything witnessed in recorded history, based on geologic evidence of past events, the scientists said. Such eruptions would dwarf those of Mount St. Helens, Krakatoa, Pinatubo and anything else going back dozens of millennia.
The warning system covering the Pacific Ocean might save many lives if a tsunami strikes Southern California. But nothing can stop the destruction.
A new study puts the price tag for a worst-case scenario at $42 billion, and that does not include billions of dollars in additional damage caused directly by an earthquake that is pegged as the likely source of a potentially devastating tsunami.
Waves could inundate parts of the ports of Los Angeles and Long Beach. Many beach cities and smaller communities in Los Angeles and Orange County would suffer.
A new study puts the price tag for a worst-case scenario at $42 billion, and that does not include billions of dollars in additional damage caused directly by an earthquake that is pegged as the likely source of a potentially devastating tsunami.
Waves could inundate parts of the ports of Los Angeles and Long Beach. Many beach cities and smaller communities in Los Angeles and Orange County would suffer.
An ancient ice shelf the size of 11,000 football fields that broke off Ellesmere Island could be dangerous when it starts to drift in the spring, a scientist says.
The collapse of the ice island's northern coast represents the largest breakup of its kind in the Canadian Arctic in 30 years, the head of a new global ice lab at the University of Ottawa said on Thursday.
The collapse of the ice island's northern coast represents the largest breakup of its kind in the Canadian Arctic in 30 years, the head of a new global ice lab at the University of Ottawa said on Thursday.
There are only two places in the United States where colliding tectonic plates could cause a major tsunami, and new studies show a new earthquake in at least one of these locations could be imminent.
The Cascadia subduction zone, a 680-mile fault that runs 50 miles off the coast of the Pacific Northwest -- from Cape Mendocino in California to Vancouver Island in southern British Columbia -- has experienced a cluster of four massive earthquakes during the past 1,600 years. Scientists are trying to figure out if it is about to undergo a massive shift one more time before entering a quiescent period.
"People need to know it could happen," said U.S. Geological Survey geologist Brian Atwater.
The Cascadia subduction zone, a 680-mile fault that runs 50 miles off the coast of the Pacific Northwest -- from Cape Mendocino in California to Vancouver Island in southern British Columbia -- has experienced a cluster of four massive earthquakes during the past 1,600 years. Scientists are trying to figure out if it is about to undergo a massive shift one more time before entering a quiescent period.
"People need to know it could happen," said U.S. Geological Survey geologist Brian Atwater.
As Asia's telecom systems slowly recovered from the earthquakes that hit Taiwan this week, Chinese scientists said they had developed a new way of forecasting tremors - by observing the tendency of snakes to launch themselves headlong into walls.
SAN FRANCISCO-Super eruptions that blast loads of ash sky high can change the climate. Now scientists are finding that the relationship could go both ways with the climate having an impact on huge volcanic eruptions.
A bone-dry climate, which occurs in periods between ice ages, could make conditions just right for building up enough underground magma to fuel a giant volcanic eruption, said Allen Glazner of the University of North Carolina in Chapel Hill. He presented this idea here last week at a meeting of the American Geophysical Union.
A bone-dry climate, which occurs in periods between ice ages, could make conditions just right for building up enough underground magma to fuel a giant volcanic eruption, said Allen Glazner of the University of North Carolina in Chapel Hill. He presented this idea here last week at a meeting of the American Geophysical Union.
Extreme weather conditions continued to sweep across Israel on Wednesday, causing havoc throughout the country.
Following snowstorms in the Golan Heights, the Galilee and Hebron the previous night, on Wednesday morning snow fell in the Negev desert and later reached the central hills and Jerusalem.
Due to the snowy conditions in southern Israel, Route 40 was blocked between Sde Boker and the Nifta prison, Route 31 was blocked between Mishmar Hanegev and Lehavim and Route 204 was blocked between Yeroham and Sde Boker.
Also in the South, hundreds of Beduins were injured when several tents collapsed near the Lehavim Junction due to the stormy weather.
Following snowstorms in the Golan Heights, the Galilee and Hebron the previous night, on Wednesday morning snow fell in the Negev desert and later reached the central hills and Jerusalem.
Due to the snowy conditions in southern Israel, Route 40 was blocked between Sde Boker and the Nifta prison, Route 31 was blocked between Mishmar Hanegev and Lehavim and Route 204 was blocked between Yeroham and Sde Boker.
Also in the South, hundreds of Beduins were injured when several tents collapsed near the Lehavim Junction due to the stormy weather.
Classes in schools in northern Israel were postponed on Thursday morning as a result of ice on the roads which could prove dangerous for drivers.
Extreme weather conditions continued to sweep across Israel on Wednesday, causing havoc throughout the country.
Following snowstorms in the Golan Heights, the Galilee and Hebron the previous night, on Wednesday morning snow fell in the Negev desert and later reached the central hills and Jerusalem.
Extreme weather conditions continued to sweep across Israel on Wednesday, causing havoc throughout the country.
Following snowstorms in the Golan Heights, the Galilee and Hebron the previous night, on Wednesday morning snow fell in the Negev desert and later reached the central hills and Jerusalem.
TAIPEI, Taiwan - Undersea fiber-optic cables were damaged by a powerful earthquake off the southern tip of Taiwan, causing the largest outage of telephone and Internet service in years and demonstrating the vulnerability of the global telecommunications network.
Two residents were killed and more than 40 injured in the magnitude-6.7 tremor that hit offshore, near the southern Taiwanese town of Hengchun late Tuesday.
Up to a dozen fiber-optic cables cross the ocean floor south of Taiwan, carrying traffic between China, Japan, Korea, Southeast Asia, the U.S. and the island itself. Chunghwa Telecom Co., Taiwan's largest phone company, said the quake damaged several of them, and repairs could take two to three weeks.
Two residents were killed and more than 40 injured in the magnitude-6.7 tremor that hit offshore, near the southern Taiwanese town of Hengchun late Tuesday.
Up to a dozen fiber-optic cables cross the ocean floor south of Taiwan, carrying traffic between China, Japan, Korea, Southeast Asia, the U.S. and the island itself. Chunghwa Telecom Co., Taiwan's largest phone company, said the quake damaged several of them, and repairs could take two to three weeks.
