Mexico earthquake recorded on AZ broadband seismic network

AZGS seismologist Lisa Linville in our Flagstaff office compiled this display of the seismic waveforms rolling across Arizona from yesterday's M=7.4 earthquake in the state of Oaxaca, Mexico, as recorded on the stations of the Arizona Broadband Seismic Network, which is managed by AZGS.

The initial pulses are the P waves, followed by often higher amplitude S or surface waves.

We plan on posting a higher-resolution version of this on the AZGS website.