Design Study of Hydroacoustic Impulse Source for Deep Towing.
HYDROACOUSTICS INC ROCHESTER NY
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This report presents the results of a preliminary design study of an impulse sound source for use in a deep-towed seismic profiling system. The source is intended to be towed ahead of a long multi-channel line hydrophone array near the bottom in ocean depths from 3000 to 8000 meters. Teh source concepts evaluated are variations of the HYDROSHOCK impulse sound source specialized both for deep operation and for the desired frequency band. The HYDROSHOCK source, as a class, emits a single, highly repeatable, unipolar or bipolar pressure pulse characterized by high peak pressure of short duration followed by very limited overshoot. The frequency band of this acoustic energy can be tailored by the designer. With internal pressure compensation, the source is inherently independent of depth over a broad range of depth. Since the HYDROSHOCK source depends for its operation upon an excess of external pressure over internal pressure, it is well-suited to deep operation.
- Hydraulic and Pneumatic Equipment