ASA 128th Meeting - Austin, Texas - 1994 Nov 28 .. Dec 02

4pUW1. Bistatic bottom scattering observed by seafloor vertical arrays during the July 1993 ARSRP bottom reverberation experiment.

K. B. Smith

W. S. Hodgkiss

Marine Phys. Lab., Scripps Inst. of Oceanogr., La Jolla, CA 92093-0704

During the July 1993 ARSRP bottom reverberation experiment, the R/V Knorr deployed bottom-moored, 64-element, vertical line arrays (VLAs) with the data being recorded by autonomous digital recording packages (GARRPs). Bistatic scattering data were recorded by these VLAs from R/V Cory Chouest and R/V Alliance transmissions. In this paper, bottom scattering observed at Site B' in the SRP Natural Laboratory with these VLAs will be shown and the received scatter related to the source-array positions and bathymetry. Modeling using UMPE/PEREV [K. B. Smith, F. D. Tappert, and W. S. Hodgkiss, J. Acoust. Soc. Am. 94, 1766 (A) (1993)] and BB-UMPE [K. B. Smith and W. S. Hodgkiss, J. Acoust. Soc. Am. 95, 2826 (A) (1994)] will be used to provide insight into the spatial and temporal structure of the observed scatter. [Work supported by ONR Code 3210A.]