This seismogram shows a 24-hour record of how much the ground moves at Weston Observatory in Weston, Massachusetts. Viewing other seismic stations will show you how much the ground moves in those ...

There are a number of ways to measure the magnitude of an earthquake. Most scales are based on the amplitude of seismic waves recorded on seismometers. These scales account for the distance between ...

Ground motion visualisation animations showing the very long-period seismic wave propagating around the ... The right panel shows a numerical simulation of the 16 September 2023 tsunami and ...