On April 28th, 2007, a magnitude 4.3 earthquake occurred in the English Channel.
The three seismograms on sheet R3 show the arrival of seismic waves from the earthquake at three stations in the UK.
|EDISP||BGS offices Edinburgh||55.924||-3.179||SEP||East||15 sec-5 Hz|
|HHUK||Hailey Hall School, Hertford||51.778||0.015||SEP||East||15 sec-5 Hz|
|STED||St. Edward's School, Poole||50.74||-1.96||Guralp EDU||Vertical||30 sec-10 Hz|
|Event date||Time||Magnitude||Latitude||Longitude||Depth/ km|
Students identify some features on real seismograms and/or use these seismograms to consider differences in arrival times of P- and S-waves at different stations.