18 ms·

Yep, just woke me up. Here's the seismograph from Occidental college: https://apps.oxy.edu/ws/seismoday.aspx https://apps.oxy.edu/ws/seismoday.aspx

• 0898 7y ago
  For the life of me, I can't work out the axes on that graph.
  • jefftk 7y ago
    Seismographs have time on the X axis and magnitude on the Y. This one wraps the X axis so each line across the paper is 15min.