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foreshock |
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foreshock [′fȯr‚shäk] (geophysics) A tremor which precedes a larger earthquake or main shock. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| The foreshock proved to be just a preview of the main event Less than 30 seconds later, a moment magnitude 7. Kate Hutton, a seismologist at the California Institute of Technology in Pasadena, said there was a one-in-20 chance that Tuesday's quake was a foreshock to a larger quake that could hit within five days. But today's rumble is but a mild foreshock of a tectonic demographic shift, a jolt that British Author Paul Wallace describes as an "agequake. |
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