Ключевые слова: activity, aftershock, amplitude, audio, background, beat, black, chart, data, diagram, disaster, earth, earthquake, equipment, frequency, geology, graph, illustration, impact, instrument, line, measure, mechanical, meter, motion, natural, nature, paper, polygraph, pulse, quake, radio, record, richter, science, seismic, seismogram, seismograph, seismology, seismometer, sound, tectonics, test, trace, vertical, vibration, volcano, wave, waveform,