DEFINITION:
seismic wave, vibration generated by an earthquake, explosion, or similar energetic source and propagated within the Earth or along its surface.
MAIN TYPES:
Body Waves and Surface Waves
BODY WAVES SUB-TYPES:
Primary Waves (p-waves or pressure waves), Secondary Waves (S-waves or shear Waves)
PRIMARY WAVES CHARACTERS:
Primary waves (P-waves) are compressional waves that are longitudinal in nature.
SECONDARY WAVES CHARACTERISTICS:
Shear is the change of shape, without change of volume, of a layer of the substance, produced by a pair of equal forces acting in opposite directions along the two faces of the layer.
SURFACE WAVES SUB-TYPES:
Love waves and Rayleigh waves
LOVE WAVES CHARACTERISTICS:
Love waves are transverse and restricted to horizontal movement - they are recorded only on seismometers that measure the horizontal ground motion.
RAYLEIGH WAVES CHARACTERISTICS:
It is a secondary wave characterized by low frequency and strong energy, propagating mainly along the interface of medium and rapid attenuation of energy with increase in interface distance.
Explanation:
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