ASA 130th Meeting - St. Louis, MO - 1995 Nov 27 .. Dec 01

1aAO4. Amplitude fluctuation effects in acoustic scattering due to shallow water internal waves.

Lei Fu

MIT/WHOI Joint Program, Woods Hole, MA 02543

James F. Lynch

Woods Hole Oceanogr. Inst., Woods Hole, MA 02543

Amplitude fluctuation effects in acoustic scattering due to shallow water internal waves are examined using both adiabatic and coupled normal mode theory. The discussion is restricted to linear (nonsoliton) internal waves with a Garrett--Munk spectrum in this work. Coherent and incoherent effects, adiabatic versus coupled scattering, and the range, frequency, and internal wave amplitude sensitivity of the scattering will be discussed. Directions for future work will be discussed.