Low‐frequency surface loss values obtained using the global attenuation model

A series of propagation loss measurements over a single surface reflected path is analyzed using the pH‐dependent global attenuation model. Values of surface loss for the frequency range 10–2000 Hz were obtained at low sea state conditions. The results for incident angles between 10° and 24° were found to be very small and in general agreement with the work of Adlington [J. Acoust. Soc. Am. 35, 1834–1835 (1963)]. A comparison is made to presently used surface loss models. [Work supported by NUSC.]