Accession Number : AD0778030

Title :   SOFAR Channel Axial Sound Speed and Depth in the Atlantic Ocean.

Descriptive Note : Research rept. Jan-Jun 73,

Corporate Author : NAVAL UNDERSEA CENTER SAN DIEGO CALIF

Personal Author(s) : Northrop,John ; Colborn,J. G.

Report Date : FEB 1974

Pagination or Media Count : 35

Abstract : Axial sound speed and depths of the SOFAR channels in the North and South Atlantic have been estimated and the seasonal variations that affect SOFAR propagation examined. The estimates are derived from applying averaging techniques to archived oceanographic data. The computed values appear to agree within one part in a 1000 with the measured data from long-range propagation experiments. A more accurate sound speed mapping method is recommended, as is the incorporation of measured values of speed and depth in any SOFAR computer program. (Author)

Descriptors :   *Underwater sound, *South Atlantic Ocean, *North Atlantic Ocean, Sound transmission, Variations, Acoustic velocity, Depth

Subject Categories : Physical and Dynamic Oceanography
      Acoustic Detection and Detectors
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE