This paper was presented at the 13th Annual aTe in Houston, TX, May 4-7,1981. The materlalls subject to correction by the author. Permission to copy Is restricted to an abstract of not more than 300 words.
ABSTRACT,The deep-towed seismic system is a measurement tool being developed for marine scientists interested in the geological, geophysical, and geoacoustic properties of the deep ocean (6000 m) sea floor and its upper subbottom structure (500 m). Based on acoustic performance predictions, it was found that the deep-towed system design concept will meet the scientific requirements. Analytical techniques described in this paper are used to compare the measurement performance of a deep-towed seismic system with one towed near the water surface, in deep water. It was found that towing the system near the sea floor produces significant advantages in geoacoustical parameter determination and spatial resolution.Design and analysis studies have also been performed to determine hardware requirements for an experimental system which will be used to test and eva1~ate a newly developed Helmholtz resonator sound source. The at-sea test planned for the experimental system will also provide information necessary for the design of a final system. In this paper, hardware and the major parameters affecting both the experimental and final system designs are reviewed. Also, the detailed characteristics of the experimental system and the general projected characteristics of the final system are discussed.
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