Effective Low-Frequency Geoacoustic Properties Inferred from Measurements in the Northeast Atlantic
NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY STENNIS SPACE CENTER MS
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The purpose of the study documented in this report was to develop geoacoustic models capable of predicting the essential bottom-reflectivity behavior relevant to long-range, low-frequency surveillance systems from acoustic survey measurements and available marine geological data. The approach taken was to a conduct an acoustic experiment obtaining bottom-reflectivity data over a variety of seafloor provinces b analyze the acoustic data using deconvolution-processing and parameter-extraction techniques c develop geoacoustical models of represent the acoustical models to represent the acoustical behavior of the sea floor in terms of geological structure and composition d assemble all geological data relevant to the acoustical- measurement sites for comparison of acoustically inferred and geologically inferred bottom structure and e evaluate state-of-the-art techniques for predicting acoustical behavior from available geological data. The geological provinces studied included three abyssal-plain stations differing in sedimentary characteristics, a moderately rough sedimented plateau, an elongated seamount, and a lower continental rise site.
- Physical and Dynamic Oceanography