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31 min ago | Scientific American
Ending a half-century of geological speculation, scientists have finally seen the process that causes rocks to move atop Racetrack Playa, a desert lake bed in the mountains above Death Valley, California.
Due to global warming, scientists say, the chances of the southwestern United States experiencing a decade long drought is at least 50 percent, and the chances of a "megadrought" - one that lasts over 30 years - ranges from 20 to 50 percent over the next century.
Stockholm: Two earthquakes measuring more than magnitude 5 hit Iceland's Bardarbunga volcano overnight and another quake shook a nearby volcano, with overall seismic activity staying high, the country's Meteorological Office said on Wednesday.
Texas seismologist Crag Pearson explained in greater detail Monday how the Railroad Commission would enforce new rules on wastewater injection wells if they pass later this year.
A system to provide early warnings of earthquakes such as the one which shook California's wine country this week is planned and ready to go, but two years after the scientific work finished, the funding is still being lined up.
A lab in California heard an alert seconds before the Napa earthquake reached it.
Four aftershocks rattled the North Bay early Tuesday morning, including a 3.9 shaker that further damaged Highway 29, while crews continued to repair water mains and inspect buildings for damage.
Five small quakes and aftershocks rumbled through wine country early Tuesday, days after the biggest earthquake in 25 years hit the Bay Area.
Four aftershocks rattled the Napa and American Canyon area early Tuesday morning, one of them the strongest since Sunday's 6.0 earthquake.
Many Northern Californians spent Monday cleaning up, 24 hours after the Napa Valley region suffered it strongest earthquake in 25 years.
"The most accepted hypotheses pointed to the age of these paintings as 2,000 to 4,000 years old, or perhaps even 7,000 to 8,000 years old," said Joel Pederson, professor of geology at Utah State University.
The June 27 lava flow, named for the date it began erupting from a new vent, isn't an immediate threat to homes or structures downhill of the flow, but could become one in weeks or months if it continues to advance, the U.S. Geological Survey's Hawaiian Volcano Observatory said.
This is what Associated Press reporters on the scene are learning following the largest earthquake to hit the San Francisco Bay Area in 25 years: Mark Ghilarducci, director of the California Governor's Office of Emergency Services, said at a news conference late Sunday afternoon that the situation had stabilized.
The earthquake that struck Napa County early Sunday could have been much larger, scientists said, given the track record of the fault that most likely caused the shaking.
The 6.0-magnitude tremor that jolted Northern California on Sunday sparked concerns about whether a more catastrophic earthquake is looming.
Updated: Thu Aug 28, 2014 04:38 am
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