The AIM Project: Interval Waves and Microstructure in the Thermocline and Their Effects on Acoustic Propagation.
Abstract
A coordinated set of three experiments was performed in the Gulf of Lions in September 1976 to study physical processes in the thermocline and their effects on acoustic propagation. Simultaneous measurements from two ships and three bottom-moored buoy systems were made of such oceanographic parameters as temperature, salinity, and current velocity so as to assess internal wave motions, advecting features of temperature and salinity irregularities, vertical microstructure of temperature and salinity, and turbulence. In addition, a concurrent acoustic propagation experiment in the 3 to 12 kHz band was conducted over a range of 3 to 10 km to assess multipath arrival characteristics and to measure phase and amplitude fluctuations along a single path. Signals were received on a five-element vertical array, from which vertical angles of arrival could be derived for the different paths.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 15, 1979
- Accession Number
- ADA082009
Entities
People
- Robert Bruce Williams
Organizations
- SACLANT ASW Research Centre