The Jan. 26, 2001 Ashtabula, Ohio EQ
This earthquake is the largest in our region since the 1998 Ohio-Pennsylvania EQ and the establishment of the state-wide OhioSeis network. It was well-recorded by all stations in operation that day and thus provides excellent amplitude data.
Here are a few example seismograms that show the waveform character at distances less than 100 km where a remarkable "Local Lg" wave is the largest arrival from in frequency pass band of the S102/OhioSeis system.
The LLg amplitude is much larger than the S wave for these seismograms. Is that true for the other OhioSeis stations? Below, I plot the amplitudes for the P, S, Lg (where distinct at larger distances), and LLg phases on OhioSeis & MichSeis stations.