Jed Wallace’s opening-day winner caused a "micro-earthquake" at The Den on Saturday afternoon, with vibrations from the goal celebrations being picked up on a seismometer as part of a Sky Bet study.
Wallace’s 34th-minute volley sent The Den into raptures, with over 13,500 Lions fans leaping to their feet, sending a seismic pulse through the ground.
Neil Harris lauded the 'phenomenal atmosphere' inside the stadium as Millwall held on to take the maximum points from their first outing of the season.
Seismologist Paul Denton, who is conducting the experiment, said: "There was a clear release of energy when the goal went in, with a reading of 28 micrometers/second on the seismometer we’ve installed within the ground.
"It’s tough to draw any conclusions on just how big the celebration was at present without more data over the course of the season, as there are so many variables when setting up seismometers at different stadiums in the UK.
"As we continue to monitor celebrations throughout the season, we’ll be able to build up a clearer picture on what constitutes an average celebration at The Den."
So far, seismometers have been installed at seven Championship stadiums; Barnsley, West Bromwich Albion, Reading, Millwall, Stoke City, Sheffield Wednesday and Swansea City.
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