As the drum and paper shake next to the pen, the pen makes squiggly lines on the paper, creating a record of the earthquake. This record made by the seismograph is called a seismogram. When you look ...

This seismogram shows a 24-hour record of how much the ground moves at Weston Observatory in Weston, Massachusetts. Viewing other seismic stations will show you how much the ground moves in those ...

The seismogram below is refreshed once every five minutes. The seismogram above records seismic activity worldwide. Each horizontal line is one hour of time. The lowermost horizontal line on the ...

Synthetic waveform tests showed that this addition significantly improved the evaluation of seismic wave polarization ... Application to Various Phases of Seismogram, IEEE Transactions on ...