There was seismic activity detected during one of Taylor Swift's concerts at the Aviva Stadium in Dublin, Ireland. Researchers at the Dublin Institute for Advanced Studies set up 21 seismometers, which detect vibrations or tremors in the Earth's surface, outside the stadium. The research team found that during the first show, the seismic activity caused by 50,000 fans during Swift's performance of 'Shake It Off' could be detected 100 km away. Swift's performance of her 2008 hit 'Love Story, generated the largest seismic waves. Similar seismic events have occurred at the pop star's other shows, now being dubbed the "Swift Quake."