What are Seismic waves?
Seismic waves are the waves of energy caused by the sudden breaking of rock within the earth or an explosion. They are the energy that travels through the earth and is recorded on seismographs.
Among the many types of seismic waves, one can make a broad distinction between body waves, which travel through the Earth, and surface waves, which travel at the Earth's surface. Other modes of wave propagation exist than those described in this article; though of comparatively minor importance for earth-borne waves, they are important in the case of asteroseismology.
Surface Wave Seismic Test Instrument/seismic waves logger
1.Body waves travel through the interior of the Earth.
2.Surface waves travel across the surface. Surface waves decay more slowly with distance than body waves, which travel in three dimensions.
3.Particle motion of surface waves is larger than that of body waves, so surface waves tend to cause more damage.