
Seismic waves are waves of energy that travel through the Earth`s layers, and are a result of an earthquake, explosion, or a volcano that imparts low-frequency acoustic energy. Many other natural and anthropogenic sources create low amplitude waves commonly referred to as ambient vibrations. Seismic waves are studied by geophysicists called seism....
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http://en.wikipedia.org/wiki/Seismic_wave

vibration generated by an earthquake, explosion, or similar energetic source and propagated within the Earth or along its surface. Earthquakes ... [10 related articles]
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http://www.britannica.com/eb/a-z/s/59

An elastic wave generated by an impulse such as an earthquake or an explosion. Seismic waves may travel either along or near the Earth's surface (Rayleigh and Love waves) or through the Earth's interior (P waves and S waves).
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a shock wave usually generated by an earthquake. In oil exploration seismic waves are generated by detonating small explosions on the ground surface or on the sea. These are reflected by the various layers of rock beneath the ground and measured at the surface. Computer analysis enables a cross-section of the rock layers to be constructed thus reve...
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seismic wave. An elastic wave generated by an impulse such as an earthquake or an explosion. Seismic waves may travel either along or near the earth's surface ( Rayleigh and Love waves) or through the earth's interior (P and S waves).
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One of a series of progressive disturbances that reverberate through the Earth to transmit the energy released from an earthquake.
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A wave or vibration produced within the earth by an seismograph An instrument that records seismic waves.
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Successive wave-type displacement of rock usually caused by an earthquake.
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http://www.physicalgeography.net/physgeoglos/s.html

seismic wave, seismic waves An elastic wave generated by an impulse such as an earthquake or an explosion. Seismic waves may travel either along or near the earth's surface ('Rayleigh' and 'Love' waves) or through the earth's interior ('P' and 'S' waves). Waves of Destruction Earthquakes are said to radiate destruction much like bomb blasts in th...
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Energy wave generated by an earthquake or an artificial explosion. There are two types of seismic waves: body waves that travel through the Earth's interior; and surface waves that travel through the surface layers of the crust and can be felt as the shaking of the ground, as in an earthq...
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waves generated either by an earthquake or artificially.
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