marine seismic source and method of producing seismic signals

摘要

Marine seismic source and method of producing seismic signals A very low frequency marine seismic source has a water reservoir (47) that feeds water to an opening communicating with the surrounding water (13). The flow rate of water through the opening is controlled by a rotor disc (11) and stator disc (9) having holes that overlap at a larger or smaller point as the rotor rotates. Water flow modulation produces a modulated pressure signal that is irradiated to the surrounding water. The device is intended to produce acoustic signals over a range that extends down to 0.5 Hz or lower.