Seattle Seahawks fans make the earth move

The power of… celebration.

Seattle Seahawks fans register as earthquake during football game – CNN.com.

After setting a Guinness World Record for noise at an outdoor stadium in September, CenturyLink Field went seismic during Monday Night Football, registering as an earthquake at a recording station about a block from the stadium.

How big, you ask?

In the magnitude 1-to-2 range, according to John Vidale, a professor at the University of Washington and the director of the Pacific Northwest Seismic Network.

Five separate events during the game were large enough to register. The biggest was a first quarter touchdown. This is not such a rare event. When sports stadiums of this size are full to capacity, they become equivalent to the population of a city in a rather small area. When lots of people get excited and jump up and down all at once, it will vibrate the earth and transmit that vibration, naturally. Mine blasts or collapses can register as earthquakes, major explosions may also. During the Reason Rally in 2010, Adam Savage of Mythbusters asked everyone to jump at once to see if it registered on an adjacent seismograph. Sadly, the crowd was so huge, we all couldn’t hear his directions. But, if I recall correctly, the needle bounced.

  6 comments for “Seattle Seahawks fans make the earth move

  1. Chris Howard
    December 4, 2013 at 12:22 PM

    That’s not possible.

    Humans have no effect on our environment.

    Next you’ll be telling me that we are changing the weather, here on earth!

    C’mon. C’mon!

    ;-)

  2. Lagaya1
    December 4, 2013 at 12:47 PM

    I watched the game Monday night, and the fans are really loud. In years past, when their team was not so good, that was something they were always proud of, that they were the loudest fans. Now that their team is doing so well, I wish they’d give the noise thing a break. Sometimes you can’t even hear the announcers. Unfortunately, now they think they’re largely responsible for the team’s success, calling themselves “the 12th player”, so the noise continues.

  3. December 4, 2013 at 1:00 PM

    You have to remember that the scale is logarithmic, so 1 is not surprising (2 on the other hand is 10 times larger than that). Though I’ve never been there, I’d be willing to bet that the acoustics of the stadium was a big contributing factor.

  4. Chris
    December 4, 2013 at 1:31 PM

    I live a mile from a college football stadium, I can see it from my window now. We definitely hear it when there is a touchdown.

    Which is why we were not pleased when the TV broadcasters dictated the game starts. One started at 9pm, the noise went to midnight.

  5. knightofbob
    December 4, 2013 at 10:48 PM

    I found a reference to the Rally, giving the quote as, “14 trillion times weaker than 1906 earthquake in San Francisco or 100 times stronger than a 35mph car collision,” which is roughly what I remember them saying at the time (I was close to the first set of Jumbotrons and therefore speakers, so I didn’t have any trouble hearing.)

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