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Earthquake Basics

Before diving into the wealth of fascinating earthquake phenomena I plan to share with you, I’ll give an extremely brief basic overview of what earthquakes are and why they happen, so that we can all...

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Tsunami misconceptions

Exactly one year ago today we (some of us) sat glued to our TVs as the tsunami generated by the gargantuan 8.8 Chilean earthquake barreled into bays around the Pacific Ocean. This is what we saw:...

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Swaying high-rises and resonance frequencies

In a post a few weeks ago I linked to a humbling video of high-rise buildings in Tokyo swaying after the 9.0 quake. Well, those buildings were full of tens of thousands of people, plenty of whom had...

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East Coast (U.S.) earthquakes – What gives?

On Tuesday afternoon, August 23, 2011, people up and down the United States’ East Coast–and as far inland as Chicago–felt an unmistakable tremor. At first, of course, the sensation was not so...

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The jiggling Earth, or, what are all those squiggles?

Ever since we first formally recorded one more or less a century and a score ago, the seismogram of an earthquake has become an iconic symbol. Oversimplified and unrealistic ones abound, but natural...

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