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Seismic waves are waves of energy that travel through the Earth's layers, and are a result of earthquakes, volcanic eruptions, magma movement, large landslides and large man-made explosions that give out low-frequency acoustic energy.
surface wave. n. A seismic wave that travels across the surface of the earth rather than through it. Surface waves usually travel more slowly and have larger amplitudes and longer wavelengths than body waves. surface wave. An earthquake wave in which rock particles vibrate at right angles to the direction of wave travel.