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Seismic Waves, image - Coggle Diagram
Seismic Waves
are elastic waves produced by vibration or impulse due to the occurrence of an earthquake or volcanic activity.
Main Types
Surface Waves
Sub Types
Love Waves
named after Augustus Edward Hough Love (A.E.H Love), a British mathematician. Its mathematical model worked out by Love in 1911. Love waves are faster than Rayleigh waves and move in a side to side motion, similar to a snake's movement causing the ground to twist.
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Rayleigh Waves
named after John William Strutt, Lord Rayleigh, who mathematically
predicted the existence of this kind of wave in 1885. These waves roll along the ground just like a wave rolls across a lake or an
ocean.
Love and Rayleigh waves are guided by the free surface of the Earth. They follow along after the P and S waves have passed through the body of the planet
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Body Waves
Sub Types
Primary Waves
A pulse energy that travels quickly through the Earth and through solids, liquids, and gases. They are faster than secondary waves and the ones that reach the detector first after an earthquake, which is why they are called "primary" waves.
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Secondary Waves
also known as shear waves. A pulse energy that travels slower than a P-wave through only Earth and solids. These waves move as either shear or transverse waves and force the ground to sway from side to side, in rolling motion. Which shakes the ground back and forth perpendicular to wave's direction.
The idea that S-waves cannot travel through any liquid medium led seismologists to conclude that the outer core is liquid.
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may travel either along or near the earth's surface or interior and this energy radiates in all directions from the focus in the form of waves which are recorded in seismographs.
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