The Los Angeles basin appears to be in a seismic "lull" characterized by relatively smaller and infrequent earthquakes, according to a study in the September issue of Geology.
By contrast, the Mojave Desert is in a seismically active period. Seismic activity alternates between the two regions, the study suggests.
The lull in the Los Angeles basin began 1,000 years ago, said the authors, led by James Dolan, associate professor of earth sciences at the University of Southern California.
"The past 1,000 years has been relatively quiet," Dolan said, referring to what he calls the "urban fault network" under the Los Angeles metropolitan area.
Earth Changes
Fires raced across dry woodlands in southern Greece on Friday, sweeping into mountainous towns and villages and killing at least 27 people, the country's deadliest forest fire toll in decades, authorities said.
Fire crews searching through charred villages in the western Peloponnese region after daybreak said they had found 21 bodies in villages near the town of Zaharo, including those of three firefighters. To the southeast, another six people lost their lives in another fire near the town of Areohoro, the fire department said.
Fire crews searching through charred villages in the western Peloponnese region after daybreak said they had found 21 bodies in villages near the town of Zaharo, including those of three firefighters. To the southeast, another six people lost their lives in another fire near the town of Areohoro, the fire department said.
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| ©RTV International |
It's not something you see everyday; a two-headed calf is born in Tulare County.
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| ©26KMPH |
The remnants of the once mighty Hurricane Dean triggered deadly mudslides in Mexico Thursday as driving rain drenched a large part of the country, bringing the storm's death toll to at least 25.
And with river levels swelling rapidly and pounding rain hitting unstable mountain flanks, officials warned the crisis was far from over, even though Dean was downgraded to a tropical depression.
And with river levels swelling rapidly and pounding rain hitting unstable mountain flanks, officials warned the crisis was far from over, even though Dean was downgraded to a tropical depression.
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| ©Omar Torres/AFP |
| People look at the remains of a destroyed house on Mahahual's beach, 80 km from Chetumal, after the passage of Hurricane Dean, 22 August 2007. |
The Windy City and northern Illinois were braced for a second punch Friday after a sudden storm with 70 mph wind slammed into the Chicago area Thursday evening, tearing down huge trees and damaging buildings.
In the suburbs Thursday, part of an industrial facility's roof collapsed, injuring 40 people, and a tornado struck western Michigan, downing about 700 trees in Montcalm County.
Early Friday, another band of thunderstorms dumped more rain along a line from southern Iowa into Wisconsin.
In the suburbs Thursday, part of an industrial facility's roof collapsed, injuring 40 people, and a tornado struck western Michigan, downing about 700 trees in Montcalm County.
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| ©Weather Underground |
Early Friday, another band of thunderstorms dumped more rain along a line from southern Iowa into Wisconsin.
Napier et al. assert that life originated in comets, not on planets like Earth. Kennett et al. believe that a large comet impacted North America just 13,000 years ago, causing a mass extinction. For a critique, read on.
Hail pelted southeast South Dakota counties mostly along the Missouri River on Tuesday night.
Dante in eastern Charles Mix County received hail larger than 4.25 inches in diameter, said Greg Harmon, National Weather Service meterologist in Sioux Falls. The softball-plus size hail broke car windows in town, he said.
Dante in eastern Charles Mix County received hail larger than 4.25 inches in diameter, said Greg Harmon, National Weather Service meterologist in Sioux Falls. The softball-plus size hail broke car windows in town, he said.
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| ©AP |
A day of record rainfall Monday in Metro Detroit caused havoc for motorists and residents who endured power outages and severe flooding and turned some streets into muddy swamps that left 100 homes in Dearborn inundated.
Through 7 p.m. Monday 1.62 inches was reported at Detroit Metro Airport, passing the one-day record of 1.5 inches set in 1904, said National Weather Service meteorologist Greg Mann.
Through 7 p.m. Monday 1.62 inches was reported at Detroit Metro Airport, passing the one-day record of 1.5 inches set in 1904, said National Weather Service meteorologist Greg Mann.
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| ©David Guralnick / The Detroit News |
| Motorists wade through a flooded Central Street in Detroit. Elsewhere, some passers-by stopped to help motorists in trouble, and some charged for their services. |
Two storm systems colliding along the nation's midsection set off a spate of weather warnings from Colorado to Ohio as the deadly combination moved toward the Great Lakes on Wednesday.
Twenty-five people have been killed, mostly from flooding, according to media reports.
Twenty-five people have been killed, mostly from flooding, according to media reports.
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| ©La Crosse Tribune/AP |
| The home of Lynn and Sharon Parding lies in ruin along Highway 26 north of Brownsville, Minnesota, Wednesday. |
Sightings by marine scientists of dolphins in the north Atlantic's Bay of Biscay have dropped off by 80 percent compared to the same period in 2006, a wildlife conservation group said Wednesday.
The alarming drop in numbers of the Bay's three most common species of dolphin -- the striped, bottlenose and common -- can be attributed to one or both of two causes, Clive Martin, senior wildlife officer for the Biscay Dolphin Research Programme, told AFP.
The alarming drop in numbers of the Bay's three most common species of dolphin -- the striped, bottlenose and common -- can be attributed to one or both of two causes, Clive Martin, senior wildlife officer for the Biscay Dolphin Research Programme, told AFP.
Comment: Seems the people at NASA still don't like cometary showers invading the inner solar system. Their "evidence" is the lack of evidence that would explain what their theories predict about comets, dismissing the compelling evidence "on the ground", albeit a lack of a crater, but that could be explained if the comet impacted the Laurentide ice sheet itself, despite their dismissals. It's as if the Inquisition demanded Galileo disprove the bible's contention that there are four corners of Earth before proposing the theory that the earth is, in fact, round. And what about this crater discussed here? And what about the Carolina Bays?