Japan earthquake - seismograms

My geophysics students Eamon Hall, Conor Neal, and Stacey Sosenko tracked down this seismogram from the Australian seismograph network:

Seismograms from the western Australia network of seismograms shows the initial pulse a little more than 10 minutes after the main quake, as shown in the figure below.

 

The Franklin & Marshall seismograph is located about 93 degrees away from the focus and felt the quake about 13 minutes after it struck, as expected.  The seismogram also shows up two  aftershocks later in the day.

Or, check out some more seismograms using the Rapid Earthquake Viewer.