to the potential velocity gradient d^Cp |Eq. (87)), and hence For a recent paper see J. G. Clark and M. Kronengold, 



ton'' ~e'''''^ [Eqs. (79), (81)1. The reduction in rms 6 C/C "Long-period Fluctuations of CW Signals in Deep and Shallow 



is by a factor 3. 3. This would more nearly align observed Water," J. Acoust. Soc. Am. 56, 1071-1083(1974). 



and computed phase spectra, but at the expense of an even '^F. Dyson, W. Munk, and B. Zetler, "An Interpretation in 



larger discrepancy in the intensities. Terms of Internal Waves and Tides of Multipath Scintillations 



" For A/iami-il/;chigan project, starting with J. C. Steinberg Eleuthera to Bermuda, " J. Acoust. Soc. Am. (1976) (in 



and T. G. Birdsall, "Underwater Sound Propagation in the press). 

 Straits of Florida," J. Acoust. Soc. Am. 39, 301-315 (1966). 



232 



