Marine Physical Laboratory Multi-Disciplinary Ocean Science and Technology Program
Abstract
During this reporting period, S.I.O. M.P.L. scientists pursued investigations of problems in physical oceanography ranging from acoustic noise fields at the surface, to studies of low frequency noise fields at the deep sea floor. The range of topics included ocean measurements of the Newtonian gravitational constant, theoretical studies of internal wave dynamics and investigations of acoustic questions related to the performance of the SEABEAM bottom-mapping sonar. While the MPL program emphasized acoustic problems, interactions with geology and meteorology were also studied, as well as physical dynamics and oceanic gravimetry. Individual report titles include: Surface generated noise under low wind speed at kHz frequencies; Coupling of surface and internal gravity waves -- Revisited; Vertical directionality of ambient noise at 32 N as a function of longitude and wind speed; Coherence length of seafloor noise -- Effect of ocean bottom structure; Simultaneous operation of the Sea Beam multibeam echo-sounder and the SeaMARC II bathymetric sidescan sonar system; Long-period acoustic and seismic measurements and ocean floor currents; Performance of two classes of active sonar detectors in a shallow water environment.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1991
- Accession Number
- ADA239183
Entities
People
- Fred H. Fisher
- Kenneth M. Watson
Organizations
- Scripps Institution of Oceanography