Seismologists study earthquakes by looking at the damage that was caused and by using seismometers. A seismometer is an instrument that records the shaking of the Earth's surface caused by seismic ...

Residents from Anchorage to Peters Creek reported feeling the magnitude 4.3 earthquake as it struck west of the city.

Distances from the stations to the earthquake are estimated from the difference between P and S wave arrival times: You have just figured out how far your seismograph is from the epicenter and how ...

The seismograph, Model EQ-1 (Next Generation Science), is located ... from the UTC time. The list of earthquakes below shows the most recently recorded earthquakes as determined by the United States ...

Time is indicated at the left end of the lines in Universal (or Greenwich) Time. When an earthquake occurs, the seismogram will show ground motion fluctuations that typically last from tens of seconds ...