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Open AccessArticle

The Fiber-Optic Rotational Seismograph—Laboratory Tests and Field Application

1
Faculty of Advanced Technologies and Chemistry, Military University of Technology, Warsaw 00-908, Poland
2
Elproma Electronics Ltd., Lomianki 05-092, Poland
3
Institute of Geophysics, Polish Academy of Science, Warsaw 01-452, Poland
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(12), 2699; https://doi.org/10.3390/s19122699
Received: 3 May 2019 / Revised: 31 May 2019 / Accepted: 11 June 2019 / Published: 15 June 2019
The paper presents construction and laboratory tests, as well as the first field application of a new fiber-optic rotational seismograph. The system is based on a fiber-optic gyroscope (FOG), with determined Angle Random Walk of the order of 10−8 rad/Sqrt(s) and a few rad/s maximum detectable amplitude of rotation in the frequency range from direct current (DC) to 328.12 Hz. It has been designed for the rotational seismology area of interest. This work also presents exemplary relevant measurements, which were conducted using a set of two devices installed in the geophysical observatory in Książ, Poland. View Full-Text
Keywords: rotational seismograph; fiber-optic sensor; rotational events; seismology; rotational seismology rotational seismograph; fiber-optic sensor; rotational events; seismology; rotational seismology
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Jaroszewicz, L.R.; Kurzych, A.; Krajewski, Z.; Dudek, M.; Kowalski, J.K.; Teisseyre, K.P. The Fiber-Optic Rotational Seismograph—Laboratory Tests and Field Application. Sensors 2019, 19, 2699.

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