Watch seismic waves from the M7.7 earthquake in Myanmar ripple across North America. This animation, called a Ground Motion Visualization (GMV), shows how the ground moved as detected by seismometers across the continent. Each dot is a seismic station—red 🔴 means the ground moved up, blue 🔵 means it moved down. Seismic waves from earthquakes travel both through and around the Earth. Far from the source, these motions aren’t felt by people, but sensitive seismic instruments still pick them up.