What kinds of seismic signals did Swifties send at LA concert?

Seattle may have experienced its own Swift Quake last July, but at an August 2023 concert Taylor Swift’s fans in Los Angeles gave scientists a lot of shaking to ponder. After some debate, a research team concluded that it was likely the dancing and jumping motions of the audience at SoFi Stadium — not the musical beats or reverberations of the sound system — that generated the concert’s distinct harmonic tremors.
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