Identification near-field seismic rotational events by fibre-optic rotational seismometer

Leszek R. Jaroszewicz; Zbigniew Krajewski

doi:10.1117/12.738564

2 July 2007 Identification near-field seismic rotational events by fibre-optic rotational seismometer

Leszek R. Jaroszewicz, Zbigniew Krajewski

Proceedings Volume 6619, Third European Workshop on Optical Fibre Sensors; 66192D (2007) https://doi.org/10.1117/12.738564
Event: Third European Workshop on Optical Fibre Sensors, 2007, Napoli, Italy

Abstract

The paper presents new results about identification near-field seismic rotational events by a fibre-optic rotational seismometer. The Sagnac interferometer with 2&sgr; sensitivity equal to 4.27 10^-8 rads^-1 has been used as rotational seismometer, which can detect rotational events in a direct way. The theoretic investigation of obtained results show that such events can be treatment as the seismic rotational waves. The paper presents the experimental results obtained simultaneously by a fibre-optic and a standard rotational seismometers installed in the Ojcow seismic observatory. The main advantage of such an approach is a possibility to recognize the velocity of seismic rotational waves, which is different from the velocities of other seismic waves.

Citation Download Citation

Leszek R. Jaroszewicz and Zbigniew Krajewski "Identification near-field seismic rotational events by fibre-optic rotational seismometer", Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 66192D (2 July 2007); https://doi.org/10.1117/12.738564

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