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USGS Earthquakes Powerful EarthquakesLargest Recorded Earthquake Learning Center
Earthquake Definition |
Earthquakes Shake Terribly and It's Not Your Fault.This site is purely informational. We aim to create a place where seismologists, geophysicists, geologists, and the general public can exchange ideas.. Please send contributions to admin@earthquakes.gs |
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Earthquake LightsJust before an earthquake occurs, new cracks or faults can release gases. The gases are reported to be white, blue, or red. The gases may also be accompanied by a low crackling or low fizzing resonant sound. The lights may be seen far away from the quake and may occur before or after the main shock. Some scientists believe the lights are from gases being released, but there are other theories. Earthquake lights were often thought of as a myth because scientists could not prove what eyewitnesses were saying. The sampling of witnesses was probably not large enough, either, to really be studied properly. In the 1960s, lights were photographed, in Japan. Since then, seismologists have studied more carefully the light phenomenon. What they have found is that lights are more often seen with a dip-slip rather than a strike-slip fault and that areas of hard crystalline rocks are more common the areas where lights are seen. Rather than a light being a gas, one of the foremost seismologists on earthquake lights is Friedemann Freund. He proposed that, in some way, the rocks themselves conduct electricity through P-Holes. You can read his 2003 article about it here http://www.scientificexploration.org/journal/jse_17_1_freund.pdf
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