P waves are compressional waves that travel through solids, liquids, and gases. They propagate through a substance by compressing and expanding it alternately., S-waves (Secondary waves): They are also known as shear waves, and they can only propagate in hard, solid materials by vibrating particles in a direction perpendicular to the propagation., The motion of Rayleigh wave is a mix of longitudinal, compressional, and dilatation. As a result, the particles travel elliptically in the vertical plane., The motion of Love wave particles forms a horizontal line that is perpendicular to the propagation direction. The energy of Love waves radiates in two directions rather than three.,

Seismic Waves

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