text: Watch the waves from the M7.8 earthquake in Turkey roll across seismic stations in North America.This animation, called a Ground Motion Visualization (GMV), shows the motion of the ground as detected on seismometers across North America. Each dot is a seismic station and when the ground moves up it turns red 🔴 and when it moves down it turns blue 🔵.Learn more about GMVs, what's shown in this animation, and FAQs: https://www.earthscope.org/news/social-media/about-gmvs/@police_frequency