2pUW1. Forward scattering at 400 Hz from rough seas in the presence of a range-independent underwater bubble layer.

Session: Tuesday Afternoon, May 14

Time: 1:20

Author: Guy V. Norton
Author: Richard S. Keiffer
Location: Naval Res. Lab.-SSC, Stennis Space Center, MS 39529
Author: Jorge C. Novarini
Location: Planning Systems, Inc., Long Beach, MS 39560


Of fundamental interest to the underwater acoustics community is the role that bubbles may play in connection with scattering from the rough air/sea interface. In this paper a high fidelity waveguide propagation and sea surface scattering model known as FEPE-CM [G. V. Norton et al., J. Acoust. Soc. Am. 97, 2173--2180 (1995)] is applied to the problem of forward scattering from a rough air/sea interface in the presence of a depth- dependent (horizontally statified) bubble layer. The numerical experiments considered were designed to explore the role of upward refraction (due to the presence of the bubbles) on forward scattering from the air/sea interface. Results from these numerical experiments will be presented. Preliminary results show an enhancement to the forward surface scattered field. [Work supported by ONR.]

from ASA 131st Meeting, Indianapolis, May 1996