Engineering Geology2D
Earthquakes and Seismology - Theory & Concepts
Seismic waves, earthquake causes, and hazard assessment for civil engineering.
Open the complete lessonSeismic Wave Visualizer
Primary (P) Waves
Compressional waves that travel through solids, liquids, and gases. They are the fastest seismic waves and move in a push-pull motion parallel to the direction of wave propagation.
Speed: Fast (~6-13 km/s)
Medium: Solid, Liquid, Gas