BOTTOM REVERBERATION MEASURED WITH EXPLOSIVE CHARGES FIRED DEEP IN THE OCEAN

Authors
  1. Merklinger, H.M.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
Bottom reverberation was measured at five locations in the North Atlantic using a hydrophone and explosive charges suspended near the ocean floor. Measured backscattering strengths in the frequency range from 800 Hzto 12.8 kHz show a tendency to rise moderately with frequency. The dependence on grazing angle was found to vary between a sine to the one-half and a sine-squared relation. Measurements made at several depths indicate that a portion of the reverberation originates in the subbottom layer structure directly beneath the point of measurement. A frequencies above 400 Hz, this reverberation from the subbottom appears to contribute significantly only at the steeper grazing angles.
Report Number
DREA-67-8 — Reprint
Date of publication
01 Jan 1968
Number of Pages
6
Reprinted from
J of the Acoustical Society of America, vol 44, no 2, 1968, p 508-513
DSTKIM No
69-04728
CANDIS No
73918
Format(s):
Hardcopy;Originator's fiche received by DSIS

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