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Originally Posted by FrankM
The ionosphere disturbance over an earthquake precursor can have a spread of several hundred miles and overlay multiple earthquake fault zones. As noted in the article cited in my previous post, precursors can occur and not result in a fault movement.
There are a number of sensor devices that can detect the electromagnetic emission caused by an earthquake precursor (and earthquake) but the big problem is having a real-time system that links the detectors.
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Have you seen this story on possible precursor electrical signals recorded Frank? It's right up your alley.
Evidence Mounts for Electromagnetic Earthquake Precursors
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Originally Posted by wired
Evidence Mounts for Electromagnetic Earthquake Precursors
By Keay Davidson 12.14.07 | 6:00 PM
SAN FRANCISCO –- Scientists revealed data Thursday that an electromagnetic alarm might have preceded a 2007 earthquake in Northern California. The evidence could offer support to a controversial theory that mysterious and little-understood signals might offer fair warning for imminent catastrophic earthquakes.
Scientists detected the signal Oct. 30 near Milpitas, California, 19 hours before a medium-size quake -- with its epicenter in the Alum Rock neighborhood of San Jose -- shook the region, scientists told Wired News Thursday.
"Alum Rock saw a signal that didn't happen at any other site: It was a series of electromagnetic pulses that were drawn out over eight minutes," said Tom Bleier, a researcher with QuakeFinder, a Palo Alto firm. He cautioned, however, that further study is needed to determine if the electromagnetic signal has "some other cause" besides the quake. ...
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Might be interesting to go back in the papers and see if anyone saw any strange lights, as well as check the missing pets report.
