The first two, called primary waves and secondary waves, or P and S waves, are detailed in this video segment. P waves cause rock particles to be compressed and decompressed in the same direction ...

Because P waves are the fastest seismic waves, they will usually be the first ones that your seismograph records. The next set of seismic waves on your seismogram will be the S waves. These are ...

It explains how seismographs detect seismic waves ... seismograph, Turkey, Berkeley, magnitude, disaster, emergency planning, engineering, destruction, aftershocks Denmark's defense committee ...

There are no P- or S-Waves, but the impacts of the buildings on the ground generated a sudden peak of short-lasting surface waves. Seismic recordings at the seismograph station Palisades (N.Y ...

Distances from the stations to the earthquake are estimated from the difference between P and S wave arrival times: You have just figured out how far your seismograph is from the epicenter and how ...

The system operates on a base-10 logarithmic scale, measuring the amplitude of seismic waves recorded upon a seismograph ... parts of an earthquake—P-waves, S-waves and surface waves—was ...