Melbourne view of seismic activity recorded at AC/DC

AC/DC's opening night at the Melbourne Cricket Ground literally rocked the ground. Wednesday's concert caused vibrations that appeared on seismic sensors two miles away. They had not played Australia for ten years, and their return produced seismic readings of between 2-5 Hz at the Seismic Research Center in Richmond.

Adam Pascal serves as the center's chief scientist. He said the machines tracked ground motion, not airborne noise. “We're capturing ground motion, not sound from the air,” Pascal told ABC News. “So, you have speakers on the ground pumping out the vibrations and they are transmitted through the ground, but also the crowd jumping up and down feeds the energy into the ground.”

Jumping fans created the most measurable activity. When crowds moved together, sensors picked up stronger signals.

“If everyone is jumping in unison, that tends to amplify the signal so we can pick it up a little better,” he said. “Whereas if it was just general crowd movement, as is the case even in the grand final at the MCG, we can still pick that up.” People living more than six miles away heard the show from their homes. Posts about the size flooded social media overnight.

But this wasn't the biggest read of the place. Taylor Swift's 2024 concerts at the same venue generated larger seismic signals than any other music event tracked by the center.

The Power Up Tour has sold more than two million tickets since its European debut last year. All tickets have sold out in North America before the band returns to Australia, with the US leg starting in Minneapolis last April.

The Melbourne Cricket Ground hosts another show on Saturday. The band then heads to Sydney's ACCOR Stadium on November 21-25, followed by Adelaide on November 30, Perth on December 4-8, and then concluding in Brisbane on December 14-18. All tour dates are listed on the band's website.

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