Oceanographic and underwater acoustics research : conducted during the period 1 May - 31 October 1965

View/ Open
Date
1966-04Author
Woods Hole Oceanographic Institution, /
Concept link
Metadata
Show full item recordCitable URI
https://hdl.handle.net/1912/25242DOI
10.1575/1912/25242Abstract
This progress report contains findings in 1) physical oceanography, 2) marine biology, 3) geology and geophysics, and 4) hydroacoustics. 1) Long-period internal waves are deduced from sound-velocity data between Bermuda and the Antilles . The region of the thermal front (usually found near 30°N) was thought on one occasion to be a generator of internal waves. 2) Midwater fishes were four times more abundant north of the front than south and midwater reverberation levels varied similarly. 3) Evidence obtained southeast of Charleston, S.C. shows that the continental shelf has been building out over the Blake Plateau. The gravity characteristics of many major rifts of the world reveal that as the width of the rift increases, the Bouguer anomalies become increasingly positive. 4) Observations support the hypothesis that diffraction effects are required to explain the sound
propagation in convergence zones in the Mediterranean.
A major engineering accomplishment was the installation and use of Sea Spider on the Blake Plateau. Sea Spider is a near motionless platform for scientific measurements in the deep ocean. The development of an automatic digital depth-reading system for use with echo sounders on ships were successfully completed, improvements in seismic profiling techniques were
made, and special coherency studies of towed hydrophone array noise have progressed.
Collections
Suggested Citation
Woods Hole Oceanographic Institution, /. (1966). Oceanographic and underwater acoustics research: conducted during the period 1 May - 31 October 1965. Woods Hole Oceanographic Institution. https://doi.org/10.1575/1912/25242Related items
Showing items related by title, author, creator and subject.
-
A distributed approach to underwater acoustic communications
Bohner, Christopher George (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2003-09)A novel distributed underwater acoustic networking (UAN) protocol suitable for ad-hoc deployments of both stationary and mobile nodes dispersed across a relatively wide coverage area is presented. Nodes are dynamically ... -
Evaluation of vector sensors for adaptive equalization in underwater acoustic communication
Lewis, Matthew R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2014-09)Underwater acoustic communication is an extremely complex field that faces many challenges due to the time-varying nature of the ocean environment. Vector sensors are a proven technology that when utilizing their directional ... -
Quantification of the spatial and temporal evolution of stratified shear instabilities at high Reynolds number using quantitative acoustic scattering techniques
Fincke, Jonathan R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2015-02)The spatial and temporal evolution of stratified shear instabilities is quantified in a highly stratified and energetic estuary. The measurements are made using high-resolution acoustic backscatter from an array composed ...