Effects of shallow water bottom interface roughness and volume fluctuations on broadband pulse resolution
By: Mei-Chun Yuan
Publisher: Naval Postgraduate School; Available from National Technical Information Service
Published: 1996
Place of publication: Monterey, Calif; Springfield, Va
Language: eng
Number of pages: 54
Description: Typical acoustic propagation in shallow water environments is dominated by bottom-interacting paths. The effects of rough bottom interfaces and sediment volume fluctuations are investigated using model simulations. A numerical study of low-frequency (approx. 200 Hz) broadband pulse propagation is presented and several characterizations of bottom factors are examined. In particular, the variations of the interface rms roughness and a volume fluctuation strength constant on the time resolution of the broadband pulse are investigated. It is shown that interface roughness is the dominant factor in the degradation of pulse resolution.
Notes: "June 1996."

Thesis advisor(s): Kevin B. Smith.

Thesis (M.S. in Engineering Acoustics) Naval Postgraduate School, June 1996.

Bibliography: p. 51-52.

Approved for public release; distribution unlimited.

Also Available online.

Mode of access: World Wide Web.

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Republic of China Navy author.

dk/dk cc:9996 12/13/96