Thousands of fans at Taylor Swift’s concerts in Scotland have caused earthquake readings kilometres away from the concert venue in Edinburgh, the British Geological Survey says.

Dressed in glittery, colourful outfits depicting different musical eras of the American pop star’s discography, more than 70,000 fans, or “Swifties”, flocked to see the singer-songwriter for her Eras Tour shows at Murrayfield stadium last weekend.

Their dancing led to seismic activity being recorded at the earthquake monitoring stations six kilometres from the venue, the BGS said on Thursday (local time).

Each of the three nights followed a similar pattern, with the songs Ready For It?, Cruel Summer and Champagne Problems resulting in the most significant seismic activity each night, the BGS said.

It said the most “enthusiastic dancing” was at the concert last Friday night, according to analysis of the seismograph data – “although crowds on each night generated their own significant readings”.

“Whilst the events were detected by sensitive scientific instruments designed to identify even the most minute seismic activity many kilometres away, the vibrations generated by the concert were unlikely to have been felt by anyone other that those in the immediate vicinity,” the BGS said.

Quake it off! Seismometers around Edinburgh were triggered by the rapturous Taylor Swift crowds at Murrayfield Stadium over the weekend.https://t.co/IW7693CPRn pic.twitter.com/LWZ5of4ZHH

— British Geological Survey (@BritGeoSurvey) June 13, 2024

Friday was the first of Swift’s three concerts at Murrayfield. Scottish Rugby, which owns the stadium, said there were almost 73,000 fans there.

That made it the biggest stadium concert in Scottish history, as Swift’s crowd eclipsed Harry Styles’ performance to 65,000 fans last summer. Each subsequent night then broke the record for the previous night, Scottish Rugby said.

Edinburgh newspaper The Scotsman posted footage of the massive crowd arriving for Friday’s concert.

But the Scottish crowds weren’t records for Swift. She drew 96,000 people every night to her three concerts at the MCG earlier in 2024 – the biggest crowds she has played to.

Earlier performances by Swift in Seattle and Los Angeles also registered similar seismic activity, with her Seattle gig generating activity equivalent to a 2.3 magnitude earthquake.

Swift’s tour is the world’s highest-grossing concert tour. It ends in Canada in December – which Swift has recently confirmed, despite speculation she might extend her 15-month global jaunt.

“You know, this is actually the 100th show of the show,” she told her audience in Liverpool on Thursday, adding the number “blows my mind”.

That doesn’t feel like a real statistic to me, because this has definitely been the most exhausting, all-encompassing, but most joyful, most rewarding, most wonderful thing that has ever happened in my life,” she said.

With six months of the Eras tour to run, Swift said the 100th show was “the very first time I’ve ever acknowledged to myself and admitted that this tour is gonna end in December. Like, that’s it”.

-with AAP