Comparison of Fiber Optic Accelerometers and Conventional Geophones in Field Testing for Seismic Exploration

This study compares fiber-optic accelerometers with conventional geophones during field tests at an onshore oilfield survey. Results show near-identical time-domain waveforms, with cross-correlation coefficients exceeding 0.89 for active-source signals. Spectral analysis shows that the FOA has lower self-noise than conventional sensors below 3 Hz, and the sensitivity in the range of 16 Hz∼40 Hz is higher. This reflects the potential advantages of fiber detectors in deep target imaging and shallow high-resolution stratigraphic characterization.