Animation of P Waves, S Waves & Surface Waves - San Diego State Univ

Drum Recorder Displays - N. California Seismic Network (NCSN) - online realtime views of selected seismograms

Earthquake View - TriNet/S. California Seismic Network(SCSN) - online realtime views of 15 closest seismograms

How Do I Read a Seismogram? - Michigan Tech Univ UPSeis

Seismic Waves - Univ. of Nevada Seismo Lab

Seismic Waves - Michigan Tech Univ UPSeis

Seismometers You Can Build - Princeton - multiple references

Travel Time Information and Calculator

Wave Motion Animation - Kettering University Applied Physics

indicates a USGS product or USGS partner product