is not unusual. Deep–focus earthquakes are frequent in this area. The earthquake of August 4 at lOh. 53m. U.T. probably had its epicentre near latitude 52° N., longitude 176-5° W., which is in ...

While the focus of an earthquake is where rock ruptures and slips, the epicenter is the point on the surface of the Earth that lies directly above the focus. Caution: While the first seismic waves ...