Statistical Analysis and Interpretation of Fixed-System Measurements of CW Propagation Between Eleuthera and Bermuda

Statistical analysis is performed on a 43-day time series of fluctuations in phase and amplitude, of a CW signal propagated over a 1500-km path between Eleuthera and Bermuda. Histograms, autocorrelations, and power spectra of amplitude and phase time series are compared with similar data for a 13-km range in the Florida Straits. The principal cause of fluctuations of amplitudes is shown to be multi-path interference and statistics of the amplitude fluctuation are related to statistics of fluctuation of travel times among the various ray paths. The model of propagation through a two-layer ocean with horizontal variations discussed in the previous paper is used to interpret experimental results and to determine the characteristics of the internal wave fields which could produce the observed phase shifts and multi-path interference statistics.