LAGRANGIAN AMBIENT NOISE DRIFTER

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Authors
  1. Risley, W.C.
  2. Fraser, I.A.
  3. Leger, G.T.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
The Defence Research Establishment Atlantic has carried out an experiment to study the relationship between ambient noise and oceanographic features in regions of pronounced oceanic currents, such as the Gulf Stream or its eddies, using a field of purpose built, long life drifting buoys developed and maintained at sea by Seimac Limited, of Dartmouth, Canada. These Lagrangian Ambient Noise Drifters (LANDs) comprise a drogued free floating buoy which employs telemetry over ARGOS satellites to report hourly measurements of the underwater ambient noise spectrum, as well as the surface wave energy spectrum, wind speed and diretion, Global Positioning System geographic position, and water temperature at the sea surface and at the hydrophone. This paper presents the various aspects of the design of the LAND buoys, with particular emphasis on the techniques for measuring and processing the ambient noise and surface wave height data. Comparative data for these parameters are presented.
Keywords
Lagrangian Ambient Noise Drifter;Environmental data
Date of publication
01 Sep 1994
Number of Pages
6
Reprinted from
Journal of Oceans, Proceedings Brest, Sep 94, p III-34 - III-39
DSTKIM No
98-00363
CANDIS No
507077
Format(s):
Hardcopy;Document Image stored on Optical Disk

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