sekundärvågorna

Sekundärvågorna refers to secondary waves in physics, specifically seismic waves that arrive after primary waves. These waves are a type of body wave, meaning they travel through the Earth's interior. Unlike primary waves (P-waves), which are compressional and travel fastest, secondary waves (S-waves) are shear waves. This means that the particles of the medium through which they travel move perpendicular to the direction of wave propagation. S-waves cannot travel through liquids, as liquids do not have a shear strength. This property is crucial in understanding the Earth's internal structure, particularly the distinction between the solid mantle and the liquid outer core. When seismic waves are generated by an earthquake, both P-waves and S-waves are produced. Seismographs record the arrival times of these waves. Because S-waves travel slower than P-waves and cannot pass through the liquid outer core, their absence on the opposite side of the Earth from an earthquake's epicenter creates an "S-wave shadow zone." The study of secondary waves, along with primary waves, provides valuable data for seismologists to map the Earth's interior and understand tectonic activity.