AFORS autonomous fibre-optic rotational seismograph: Design and application

作者：Jaroszewicz Leszek R^*; Krajewski Zbigniew; Kowalski Henryk; Mazur Grzegorz; Zinowko Pawel; Kowalski Jerzy

来源：Acta Geophysica, 2011, 59(3): 578-596.

DOI：10.2478/s11600-011-0011-7

• fibre-optic device
• seismograph
• rotational seismic events

We outline the research leading to development of the Autonomous Fibre-Optic Rotational Seismograph (AFORS) and describe the final version of the instrument. The instrument with linear changes of sensitivity keeps accuracy from 5.1 x 10(-9) to 5.5 x 10(-8) rad/s in the detection bandpass 1.66-212.30 Hz; it is designed for a direct measurement of rotational components emitted during seismic events. The presented system is based on the optical part of the fibre optic gyro construction where a special autonomous signal processing unit (ASPU) optimizes its operation for the measurement of rotation motions instead of the angular changes. The application of a newly designed telemetric system based on the Internet allows for a remote system control, as shown in an example of the system's operation in KsiA...A1/4 (Poland) seismological observatory.

• 出版日期2011-6