SEISMIK ACTIVITY _ FIELD DRUMS

June 22nd, 2013

Another analogy between earth frequencies and acoustic is the field drums activity. RSAM (Real-time Seismic-Amplitude Measurement) and SSAM (Seismic Spectral-Amplitude Measurement) are techniques that permit volcano seismologists to evaluate the nature of seismicity at a volcano. They are able to recognize subtle shifts in frequency related to changing dynamics of magma or gas movement.

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