METHOD AND SYSTEM FOR GENERATING LOW-FREQUENCY SEISMIC SIGNALS WITH A FLOW-MODULATED SOURCE

摘要

A low-frequency source element is configured to generate seismic waves in water. The low-frequency source element includes (900, 1300) includes a hydraulic reservoir (1302) configured to hold a given fluid volume (1303); a compliant chamber (1304) configured to hold a given gas volume (1305) and to accommodate volume changes of the given fluid volume; a rotational kinetic energy actuator (1306) configured to impart rotational kinetic energy to the fluid volume (1303); and a flow modulator device (1308) configured to transform part of the rotational kinetic energy of the fluid volume (1303) into translational energy to generate an acoustic signal.