re: I'm curious to know more about the earthquake game...

I can answer these questions from this perspective. I lived in the South Stadium dormitory at that time and was in my dorm room in the walls of the stadium for that game. I didn't attend games, except that I would sometimes walk in in the second half when they stopped taking tickets. Some of us used to break in late at night sometimes through a section of bent screen and run around the field and smoke things. I did not go to the field side on the night of the earthquake game.

All day before the game a group of us who lived in South Stadium did what we always did on game days, we sat on the front steps of the dorm and watched people walk around the stadium. When we would take notice of someone we would watch for them and count how many times they would circle the stadium. We incorporated that into our drinking. We would also duck into rooms and smoke things. South stadium was not air conditioned and was not supervised in any way.

The game that night was loud, and it got very loud at the end. For every game there is a vibration and echoing sound that we could feel. For big games you can feel strong vibrations when the crowd gets going. That night things got very loud toward the end of the game and the atmosphere was obviously rocking.

To tell the truth, however, we didn't notice any vibration which we perceived as more or less than any other big game. That the seismograph in the geology building registered an earthquake was surprising. I don't think anyone expected that. There was no noticeable "earthquake."