DETECTION OF EARTH TIDES BY THE SEISMOMETERS OF THE SLOVENIAN NATIONAL SEISMOLOGICAL NETWORK
Abstract
The ground beneath our feet moves every day, often by as much as 30 centimetres, but this is not caused by earthquakes or the movement of tectonic plates; it is the result of the gravitational forces of celestial bodies, especially the Moon and the Sun. This movement is the tides of the Earth‘s crust, and is also recorded by the sensitive broadband seismometers of the Slovenia National Seismological Network. Despite the fact that seismometers are not designed to record such long-period ground movements, by combining measurements from the entire network we can correctly record the tides of the Earth‘s crust in Slovenia. With the help of theoretical information about the Earth tides, we can also identify disturbances in the operation of the seismometers or the influence of the structure of individual seismic stations on seismological measurements.
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