Ключевые слова: activity, amplitude, analog, background, chart, curve, data, detector, disaster, display, earthquake, electronic, erupting, frequency, geology, graphic, grid, illustration, impact, instrument, measure, meter, motion, nature, paper, peak, planet, pulse, pulsing, quake, red, science, seismic, seismograph, seismology, seismometer, shake, technology, vibration, wave, waveform,