[jsrjenkins]

The article doesn't actually answer the question. How many kilometers and what is the depth of the sound channel? Where does the pressure/temperaure ratio cause sound to difract?

After reading such an article I feel none the wiser, as the words are barely defined and no specifics given. Is there anywhere else to find better info?

[DoofusOfDeath]

IIRC, "Principles of Underwater Sound" by Robert Urick [0] is considered pretty good.

A textbook that's helpful for actually implementing ocean acoustics models is "Computational Ocean Acoustics" by Jensen et al [1].

[0] https://www.amazon.com/Principles-Underwater-Sound-Robert-Ur...

[1] https://www.amazon.com/Computational-Acoustics-Modern-Signal...

[jsrjenkins]

Thank you for these. The First [0] link looks particularly interesting.