Taylor Swift's concerts in Seattle, US, on July 22-23 generated seismic activity equivalent to a magnitude 2.3 earthquake, an earthquake expert said.
Seismologist Jackie Caplan-Auerbach attributed the "earthquake" to Swift's fans or the sound system.
The shows beat the previous record in Seattle, known as the city's "Beast Quake" in 2011. This was over a touchdown scored by American football player Marshawn Lynch.
Dr. Caplan Auerbach, a geology professor at Western Washington University, said that when he compared Swift's concerts held two nights in a row, the second one "shook twice as strong" as the first.
I guess I should show the data. Swifties > Seahawks fans.— Jackie Caplan-Auerbach 🇺🇦 🌻 (@geophysichick) July 27, 2023
(except data from the concert may not be caused by the fans--it may be the sound system, so not really a fair comparison). pic.twitter.com/szwowOYQFi
Swift played in front of a total of 144,000 fans over two nights at her Seattle concerts.
Posting on Instagram afterwards, Swift said: "Seattle that was genuinely one of my favourite weekends ever. Thank you for everything. All the cheering, screaming, jumping, dancing, singing at the top of your lungs."
Music concerts have been known to cause seismic activity before, for example during the 2011 Foo Fighters concert in New Zealand.