News - 16/12/2011

Foo Fighters make ground shake in New Zealand

Foo Fighters make ground shake in New Zealand

File under: weird science and rock legends.

According to BBC, a Foo Fighters concert on Tuesday - in New Zealand - caused geological vibrations on par with "volcanic tremors". The Auckland GeoNet blog reports that the vibrations from the gig emitted a "strong low signal. The ground was shaking three times per second in a nice rhythmic motion." The recordings were taken at two monitoring stations located about a mile from the concert site at Western Springs.

The movements are described as "a semi-continuous harmonic signal with a peak osculation of 3Hz (Hertz)", with lulls between songs. The scientists explained: "The cause of the shaking is most likely the weight of the 50,000 fans dancing, as 50,000 fans is equal to around 5,000 tonnes of mass moving (or moshing) on the ground. This set up a nice harmonic vibration in the ground which was recorded in our nearby borehole seismometers".


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