Newsrx Science. "Earthquakes Actually Aftershocks Thesis

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The tremendous difference in the rate of tectonic movement is likely attributable to the corresponding difference in the mass of large central-mass tectonic disturbances and the smaller masses involved in peripheral tectonic motion. More precisely, the length of the aftershock pattern that follows major earthquakes is proportional to the relative size and mass of the tectonic plates involved.

For example, the small-magnitude modern earthquakes in the Canadian Saint Lawrence Valley are now believed to be continuing aftershocks from a large-magnitude earthquake involving the same fault in the middle of the 17th century. Similarly, the researchers have specifically linked the current series of small-magnitude recent earthquakes in the Midwest to two major earthquakes that occurred in the same region in 1811 and 1812. Their calculations were based on the perfect match between the results of laboratory experiments designed to project aftershock patterns in rock and the recorded patterns of recent small-magnitude earthquakes.

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The findings suggest an explanation for why so many recurring earthquakes occur within known fault regions and provide a reference tool capable of enhancing the ability of seismologists to predict earthquakes. However, they do not preclude the occurrence of earthquakes elsewhere.

Reference Article

NewsRx Science. "Earthquakes actually aftershocks of 19th century quakes."

November 22, 2009.

Full Text of Article:

http://home.netcom.com/~hoffmans/Observer/2009ObsidianObserver/LAGS.09.11_November_09.pdf

When small earthquakes shake the central U.S., citizens often fear the rumbles are signs a big earthquake is coming. Fortunately, new research instead shows that most of these earthquakes are aftershocks of big earthquakes (magnitude.....

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