In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 35, No. 11_Supplement ( 1963-11-01), p. 1879-1880
Abstract:
In May 1961, 98 SOFAR charges were detonated during a 24-hour period at sound-channel axis depths off Antigua. Here, the Atlantic missile range's target array of bottom hydrophones makes it possible to precisely determine their detonation time, depth, and relative position. The resulting SOFAR signals were recorded by axis or near-axis hydrophones at Bermuda and the Bahamas. The SOFAR signal's sound velocity at the cutoff point was computed for these 1000-nm transmission paths. The measured hour-to-hour variations were within ±0.1 ft/sec, with the total variation over the 24-hour period being as much as 0.4 ft/sec. There is some evidence of periodic cycling. For a better understanding of the extent and possible cause of these velocity variations, an extended exercise consisting of shots fired every hour for a week was conducted in March 1963. The data for this exercise are presently being computed and the results are to be included in this paper. [This program was supported by the U. S. Office of Naval Research's Acoustics Programs.]
Type of Medium:
Online Resource
ISSN:
0001-4966
,
1520-8524
Language:
English
Publisher:
Acoustical Society of America (ASA)
Publication Date:
1963
detail.hit.zdb_id:
1461063-2
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