You have just figured out how far your seismograph is from the epicenter and how strong the earthquake was, but you still don't know exactly where the earthquake occurred. This is where the compass, ...

"Only five [magnitude 3.0+] earthquakes have occurred within 50km [or about 31 miles] of the epicenter in historical times," UK's Geological Survey shared on social media. More than 1,700 ...

Researchers using a submersible found dramatic evidence of the tectonic forces that came into play when the magnitude-9.0 Great East Japan Earthquake ... for Marine-Earth Science and Technology ...