He retired in 2023. Seismologists register the intensity of an earthquake in units known as moment magnitude, which measure how much energy was released when the rocks along a fault moved during ...
The weather service issued an update around 2:30 p.m. EST saying the tsunami threat had passed, less than an hour after the earthquake hit. The U.S. Geological Survey said the earthquake struck in ...
About 55 earthquakes a day – 20,000 a year – are recorded by the National Earthquake Information Center. Most are tiny and barely noticed by people living where they happen. But some are ...