Amplification (by seismograph)
Amplification (by seismograph) : most earthquakes are relatively small, in fact, so small that no one feels them. In order for seismologists to see the recording of the ground movement from smaller earthquakes, the recording has to be made larger. Modern seismographs are able to magnify the ground motion 106 times or even more, i.e., they are able to resolve ground motion amplitudes as small as the diameter of molecules or even atoms. The frequency dependent amplification of a seismograph depends both on its eigenfrequency and attenuation parameters, which control the seismographs amplitude response and on the frequency of the input seismic signal (See Chapters 4 and 5 of this Manual)
No records Found