Preliminary Bottom Loss Data from Explosive Sound Sources in Area 'A',
NAVAL OCEANOGRAPHIC OFFICE NSTL STATION MS
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During September 1963, bottom loss data were taken in the southern half of the one-degree quadrangle extending from 36 deg 00 min to 37 deg 00 min N and 66 deg 00 min to 67 deg 00 min W. The data were taken at seven grazing angles ranging from 10 deg to 75 deg using Mark 22 sound signals as the sound sources. Frequency analyses were made at 1 and 4 kc. The purpose of the measurements was to determine preliminary suitability of the area for testing and evaluating bottom-bounce sonar. Two ships were utilized while making the measurements. USS SAN PABLO AGS-30 acted as the receiving ship, while USS SHELDRAKE AGS-19 acted as the source ship. The bottom reflection loss measurements were made at seven locations along each of four tracks with each location corresponding to a different grazing angle.
- Acoustic Detection and Detectors