| Popis: |
This paper describes a deep‐water propagation experiment involving the use of both explosive sources and towed sine‐wave projectors in the SOFAR channel of the North Atlantic. It was conducted with the objective of narrowing the list of potential causes put forth to explain the well‐documented, but unexpectedly large, attenuation coefficients that have been reported by determining whether the observed anomalies stem from fundamental differences in the sources employed or from mechanisms associated with the medium. The study initially considers the conformity of coefficients in the 354–3540‐Hz region for the impulsive measurements in this instance with previously reported values. Thereafter results of the present regression analysis are compared with an identical treatment of simultaneous single‐frequency data at 1900 and 3800 Hz, and the relative agreement is discussed in terms of the statistical confidence limits of each. |
