1. Deep underground rotation measurements: GINGERino ring laser gyroscope in Gran Sasso.
- Author
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Belfi J, Beverini N, Bosi F, Carelli G, Cuccato D, De Luca G, Di Virgilio A, Gebauer A, Maccioni E, Ortolan A, Porzio A, Saccorotti G, Simonelli A, and Terreni G
- Abstract
GINGERino is a large frame laser gyroscope investigating the ground motion in the most inner part of the underground international laboratory of the Gran Sasso, in central Italy. It consists of a square ring laser with a 3.6 m side. Several days of continuous measurements have been collected, with the apparatus running unattended. The power spectral density in the seismic bandwidth is at the level of 10
-10 (rad/s)/Hz. A maximum resolution of 30 prad/s is obtained with an integration time of few hundred seconds. The ring laser routinely detects seismic rotations induced by both regional earthquakes and teleseisms. A broadband seismic station is installed on the same structure of the gyroscope. First analysis of the correlation between the rotational and the translational signal is presented.- Published
- 2017
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