Scientists seek foolproof way to predict earthquakes using magnetic waves
January 6, 2013 – CALIFORNIA – Twenty-three hundred years ago, hordes of mice, snakes, and insects fled the Greek city of Helike on the Gulf of Corinth (map). “After these creatures departed, an earthquake occurred in the night,” wrote the ancient Roman writer Claudius Aelianus. “The city subsided; an immense wave flooded and Helike disappeared.” Since then, generations of scientists and folklorists have used a dizzying array of methods to attempt to predict earthquakes. Animal behavior, changes in the weather and seismograms have all fallen short. One theory is that when an earthquake looms, the rock “goes through a strange change,” producing intense electrical currents, says Tom Bleier, a satellite engineer with QuakeFinder, a project funded by his parent company, Stellar Solutions, of Cambridge, Massachusetts. “These currents are huge,” Bleier said at the AGU meeting. “They’re on the order of 100,000 amperes for a magnitude 6 earthquake and a million amperes for a magnitude 7. It’s almost like lightning, underground.” To measure those currents, Bleier’s team has spent millions of dollars putting out magnetometers along fault lines in California, Peru, Taiwan, and Greece. The instruments are sensitive enough to detect magnetic pulses from electrical discharges up to 10 miles (16 kilometers) away. “In a typical day along the San Andreas fault (in California), you might see ten pulses per day,” he told National Geographic News. “The fault is always moving, grinding, snapping, and crackling.” Before a large earthquake, that background level of static-electricity discharges should rise sharply, Bleier said. And that is indeed what he claims he’s seen prior to the half dozen magnitude 5 and 6 earthquakes whose precursors he’s been able to monitor. “It goes up to maybe 150 or 200 pulses a day,” he said. The number of pulses, he added, seems to surge about two weeks before the earthquake then drop back to background level until shortly before the fault slips. “That’s the pattern we’re looking for,” he said. –NG
2013-01-06 07:16:57
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Whistler Blowers, Insiders
He’s on to something. Quartz can’t be the only piezoelectric substance down there, and when you squeeze it, it lights your lighter, barbeque, or stove with a pulse of electricity.
As the pressure to quartz increases, current is released, peaking at max pressure, then disappearing when the pressure is taken away.
Two plates colliding underground could do the same thing. As pressure increases, they give off a steady increase in current.
Not sure if he can tell when current, (and physical pressure,) is building, but his references to “pulses” refers to the up/down cycle of electrical current, which may be easier to measure. Each of these represent a pressure buildup/slip. As long as it is occurring, pressure is being steadily released as it is increasing in frequency.
The gap before an earthquake is described as a decrease in pulse frequency to normal. This must be where pressure is building, but no slippage is occurring.
The question is: Why is there no reference to seeing the electrical current (or voltage potential) build during the lull before the “big one”? Perhaps it is harder to detect this, without the slip that finishes the pulse.
Yep, in the mean time use the lost pets column in the news papers, they usually go off the chart when there’s an impending earthquake.