Taylor Swift's Eras Tour shows trigger earthquake readings in Scotland; estimated $98 million economic boost

Taylor Swift's three nights of sold-out concerts in Edinburgh, Scotland, triggered earthquake readings up to nearly four miles from the show venue, according to the British Geological Survey, the country's national earthquake monitoring agency.

And the financial boost to both the city and the entire country is expected to be seismic, too, with Swift's Eras Tour set to add an estimated £1 billion ($1.27 billion) to the British economy, according to research from U.K. bank Barclays.

Edinburgh's Murrayfield Stadium saw record-breaking attendance over the concert weekend as the American megastar serenaded glitter-clad fans for roughly 3½ hours each night on Friday, Saturday and Sunday.

"The activity was mainly generated by fans dancing in time to the music and reached its peak at 160 beats per minute (bpm) during '…Ready For It?', where the crowd was transmitting approximately 80 kW of power," BGS wrote in a report, adding that that was "equivalent to around 6000 car batteries."

BGS uses advanced scientific instruments delicate enough to identify even the slightest seismic activity from miles away; while it detected the stadium's vibrations, they were "unlikely to have been felt by anyone other that those in the immediate vicinity," the agency wrote.

Swift's songs "Ready For It?" "Cruel Summer" and "Champagne Problems" generated the most significant seismic activity each night, it said. Even with Scotland's chilly temperatures and occasional bursts of rain, fans made sure to shake it off in the stands.

Friday night's concert, with roughly 73,000 people in attendance, broke a record as the most highly-attended concert in Scottish history — and each subsequent night then broke the previous night's record, with a final all-time high