Title :
Lagrangian ambient noise drifter
Author :
Risley, W.C. ; Fraser, I.A. ; Leger, G.T.
Author_Institution :
Defence Res. Establ. Atlantic, Dartmouth, NS, Canada
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 direction, 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 :
ocean waves; oceanographic equipment; oceanographic techniques; underwater sound; Defence Research Establishment Atlantic; GPS; LAND; Lagrangian ambient noise drifter; ambient noise; current measurement; design; drifter buoy; drifting buoy; drogued free floating buoy; equipment; ocean dynamics circulation; ocean wave acoustics; pronounced oceanic current; surface wave energy spectrum; technique; underwater sound; wind speed; Energy measurement; Lagrangian functions; Noise measurement; Ocean temperature; Position measurement; Satellites; Sea measurements; Sea surface; Surface waves; Telemetry;
Conference_Titel :
OCEANS '94. 'Oceans Engineering for Today's Technology and Tomorrow's Preservation.' Proceedings
Conference_Location :
Brest
Print_ISBN :
0-7803-2056-5
DOI :
10.1109/OCEANS.1994.364169
