Institute of Geophysics of the CAS, v. v. i.

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Central Bohemia [49.6861N, 13.9972E]

The tidal group is working at this observatory located on top of an abandoned deep mine (depth 1300 m). At this site all istruments are maintained and undergo long-term tests in the mine gallery (tiltmeters, gravimeter, barographs, etc.). In the mine gallery there is also a seismological station.

The data from all other sites are transmitted to this tidal centre for control and processing. Besides a number of in-house software, the Preterna and Eterna packages (Germany) are used for data processing and analysis.

The photos show a typical digital/analog recording setup and a PC screen view of recorded tiltmeter signals with obvious Earth tide curves.