NOISE BENEATH SEA ICE AND ITS DEPENDENCE ON ENVIRONMENTAL MECHANISMS

Authors
  1. Milne, A.R.
  2. Ganton, J.H.
Corporate Authors
Defence Research Establishment Pacific, Victoria BC (CAN)
Abstract
The state of the sea-ice and its reaction to the atmosphere results in the production of underwater acoustic noise from a variety of mechanisms. Moving floes in the summer and fall produce noise with an intensity dependent on the mean daily wind. Under fast-ice, noise is produced by other mechanisms. One is thermal-noise which is caused by cracks as a result of surface cooling; another is wind-noise caused by the flow of air over the crystalline snow or ice surface. The latter two mechanisms are surface phenomena, so that the resultant underwater noise spectrum depends on the response of the ice and snow acting as a layered medium.
Report Number
REPR-71-1 —
Date of publication
01 Jan 1971
Number of Pages
15
Reprinted from
Navy J of Underwater Acoustics, vol 21, no 1, 1971, p 69-81
DSTKIM No
71-05515
CANDIS No
10507
Format(s):
Hardcopy;Originator's fiche received by DSIS

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