RaspberryShake school seismometer

Go to the RaspberryShake website and click on "Station View." You should now see a map with all publicly accessible RaspberryShake stations worldwide. In the menu at the top of the website under "Stations," enter the name of a RaspberryShake (e.g., S8C09) and confirm your entry by clicking on the station name. You should now see your RaspberryShake on the map. On the right side of the browser window, you can see the ground vibrations, specifically the ground velocity, that your RaspberryShake is currently recording (with a slight delay).

To enlarge the recordings, click the icon next to "Live Streaming". A new window will open. The upper part of the window shows the seismogram, and the lower part shows the spectrogram. Seismograms and spectrograms show how ground movements and the frequencies of these movements change over time. The time axis runs from left to right. By clicking on the time axis, you can switch between UTC (Coordinated Universal Time) and local time in Switzerland (Central European Summer/Winter Time). The frequency measures the number of (ground) oscillations per second. The faster the ground moves up and down or back and forth, the higher the frequency. Frequencies that are particularly excited are highlighted in bright colors in the spectrogram. In the example below, frequencies of around 15 Hertz (Hz), i.e., 15 oscillations per second, were particularly excited between 13:52:30 and 13:58:30. You can clearly see this as a horizontal line in the spectrogram.