Apparently particularly energetic soccer cheers are also easily detected by seismometers. Here is one example: https://www.huffingtonpost.ca/entry/fans-cheerin

Apparently particularly energetic soccer cheers are also easily detected by seismometers. Here is one example: https://www.huffingtonpost.ca/entry/fans-cheering-world-cup-goal-may-have-caused-artificial-earthquake-in-mexico-city_n_5b26e7f4e4b0783ae12a5f6b https://www.huffingtonpost.ca/entry/fans-cheering-world-cup-...