Download or read book North Pacific Acoustic Laboratory - Underway CTD and SeaSoar Observations written by and published by . This book was released on 2007 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the limits of long-range sonar are affected by ocean variability, the overarching goal of this work is to characterize, understand, and -predict sound-speed variability in the upper ocean. Sound speed is a function of the ocean state variables temperature T, salinity S, which are themselves affected by such processes as stirring, mixing and internal waves. A long-range goal is thus the inversion of acoustic data to measure these processes.