HOW SEISMIC WAVES TRAVEL THROUGH THE EARTH'S INTERIOR Seismic waves are vibrations generated by earthquakes, explosions, or artificial sources used in geophysical surveys. These waves travel through the Earth's interior, providing valuable information about the structure and composition of the subsurface. Scientists use seismic waves to study the Earth's layers and detect underground water, minerals, and geological faults. HOW SEISMIC WAVES ARE CLASSIFIED Seismic waves are classified into two ma

SEISMIC WAVE PROPAGATION TO A SITE When an earthquake occurs, energy is released at the focus (the point inside the Earth where the fault ruptures). This energy travels in the form of seismic waves: 🔹 Body Waves – travel through the Earth’s interior (P-waves & S-waves). 🔹 Surface Waves – move along the Earth’s surface and often cause the most damage. 👉 In the video, you can see how the waves move: From the focus, energy spreads through the geologic strata as body waves. These waves reach the

Seismic Waves Viewer Seismic Waves is a browser-based tool to visualize the propagation of seismic waves from historic earthquakes through Earth’s interior and around its surface. Easy-to-use controls speed-up, slow-down, or reverse the wave propagation. By carefully examining these seismic wave fronts and their propagation, the Seismic Waves tool illustrates how earthquakes can provide evidence that allows us to infer Earth’s interior structure. http://www.iris.edu/hq/inclass/software-web-app/s