Reciprocal acoustic transmission in a midocean environment: Fluctuations

Abstract

The fluctuations in acoustic receptions from simultaneous transmission of broadband pulses in opposite directions between two points in midocean have been examined. A variety of measures of the observed fluctuations (pulse and CW) for two well-resolved paths are somewhat ambiguous due to the short time series analyzed, but in most cases are not inconsistent with the theoretical predictions based only on sound-speed perturbations due to vertical displacements. Particle velocities are found to have significant effects when differences between reciprocal transmissions are examined.