Statistical Relations between Salinity, Temperature and Speed of Sound in the Upper Ocean
Abstract
In situ measurements of salinity and temperature fluctuations at depths to 14 meters indicate distinct dependences at different times of the day. The variance of the salinity fluctuations decreased with increasing depth, but was greater just after sunrise than just prior to sunset. The variance of the temperature fluctuations decreased with increasing depth just prior to sunset, but increased with depth immediately after sunrise. The correlation length of the sound index of refraction was calculated by using the variance of the sound velocity fluctuations, and the variance of sound amplitude modulation in the theory of Mintzer. This analysis shows that microstructure patch size increases approximately linearly with depth. The power spectral densities of the salinity, temperature and sound velocity fluctuations show peaks of energy corresponding to dominant ocean wave frequencies.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1972
- Accession Number
- AD0742943
Entities
People
- Harry A. Seymour Jr.
Organizations
- Naval Postgraduate School