= Polarity reversal (seismology)
{wiki=Polarity_reversal_(seismology)}
Polarity reversal in seismology refers to the phenomenon where the direction of seismic wave propagation changes, leading to a reversal in the sign of the recorded seismic signals. This is particularly relevant in the context of analyzing seismic waves generated by earthquakes or controlled-source seismic experiments. In the context of seismic waves, polarity generally refers to the upward or downward motion of the seismic waves as recorded by seismographs.
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