Propagation measurements in a shallow water environment

In a 1968 study was made of the characteristics of sound propagation in Dabob Bay. A propagation loss model for use in predicting the source level was developed. With the advancement of computer technology and in the interest of improving accuracy, the authors have conducted a series of measurements to determine whether a more robust approximation could be used to predict the source level. A model was developed which uses inputs such as sound velocity, frequency and position, that is based on an iterative integration method. Transmission loss estimation methods are contrasted and compared in the light of experimental losses determined from signals received by an omni-directional hydrophone. The data acquired and the model developed illustrate the propagation characteristics of a shallow bounded body of water and may be extended to other similar environments