Simultaneous detection of deep-sea earthquake and magnetic field using three-axis fiber optic accelerometer-magnetometer

We present the field trial of three-axis deep-sea earthquake and magnetic detection. The fiber optic accelerometer-magnetometer with the control system based on phase generation carrier (PGC) method are integrated in a titanium alloy chamber. The experiment is carried out in 1000 meter deep sea in the south China sea. The results show that the proposed fiber optic sensors can record the air gun signal and submarine magnetic field noise signal.