Model-data comparison of shallow water acoustic reverberation in the East China Sea
Hill, Robert M.
Smith, Kevin B.
MetadataShow full item record
In this thesis, the Monterey-Miami Parabolic Equation (MMPE) model is used to generate predictions from numerical analysis of the reverberation loss structure and peak vertical correlation structure generated by the water/bottom interface, the bottom/sub-bottom interface, and the bottom volume for a shallow water environment. These predictions are then compared to the peak vertical correlation analysis of recorded data collected in an actual shallow water environment similar to the modeled environment. This experimental data was recorded by a 32-element vertical line array (VLA) that recorded the reverberant return generated by charges detonated over the continental shelf in the East China Sea as part of ASIAEX. A comparison is made between predictions and recorded data by analyzing trends in peak vertical correlation with decreasing bandwidth. The influences of interface roughness, bottom volume perturbations, and water volume turbulence on peak vertical correlation is also determined.
Approved for public release; distribution in unlimited.
Showing items related by title, author, creator and subject.
Cushman, Erick Brian. (Monterey, California. Naval Postgraduate School, 1995-12);It has been shown that good correlation exists between large-scale, high level signal returns of bottom acoustic reverberation and bathymetric ridge structures. The ultimate goal of this type of analysis would be the removal ...
Steele, Boyden Tracy (Monterey, California. Naval Postgraduate School, 1968-06);A time series of pressure variations was obtained by digitizing analogue records of bottom pressure, recorded at Pt. Sur, California, during the periods November, December, and January, 1947-1948, and June, July, and ...
Effects of shallow water bottom interface roughness and volume fluctuations on broadband pulse resolution Yuan, Mei-Chun (Monterey, California. Naval Postgraduate School, 1996-06);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 ...