Authors: Frank H. Makinson
For centuries, there was no reliable way to know whether an earthquake was eminent, even though strange animal behavior and odd lights in the sky had been observed before earthquakes. It was noted that long range radio skip was interrupted before the 1960 Valdavia, Chile earthquake and the same interruption occurred before the 1964 Alaska earthquake. Scientists took notice, primarily outside of the seismology community, and began inquiring what mechanism could cause such an interruption. In the 1960s, it was already known that certain types of sunspot activity could cause the same type of radio skip alteration. It is now known there is a prodigious amount of electromagnetic activity proceeding and during an earthquake. It has been demonstrated in the laboratory that certain types of rock act like semiconductors when subjected to stress and produce an electric current that fluctuates. It is not known how many other earthquake related issues remain outside of our knowledge, especially the odd coincidence of human health problems just before and coincident to an earthquake.
Comments: 6 Pages. The effects created by the electromagnetic signatures produced by earthquakes need extensive additional study.
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