Effective Low-Frequency Geoacoustic Properties Inferred from Measurements in the Northeast Atlantic.
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...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Text |
| Language: | English |
| Published: |
1982
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| Online Access: | http://www.dtic.mil/docs/citations/ADA128198 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA128198 |
| Summary: | 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 acoutical 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. Errata sheet inserted. |
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