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5 May 2011

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 cameras. That video was only the beginning; below are many more that capture the dramatic oscillation of the towering steel edifices. The swaying is especially clear in the following video, likely filmed …

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13 March 2011

More unique perspectives of the 8.9 quake

As expected, videos continue to surface from people all over Japan documenting the shaking, rattling, and swaying of everything. Below I have collected some of the more interesting sights. I recommend visiting Highly Allocthonous where Chris Rowan has summarized the which, what, where, and how of this massive quake. He’s also put together some nice little diagrams illustrating the more technical concepts. The whole country of Japan shook for a …

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