In situ and laboratory geoacoustic measurements in soft mud and hard-packed sand sediments: Implications for high-frequency acoustic propagation and scattering

Near-surface sediment geoacoustic and physical properties were measured in gas-rich, muddy sediments of Eckernfoerde Bay, Baltic Sea, and in hard-packed, sandy sediments of the northeastern Gulf of Mexico. Values of compressional and shear wave velocity are much lower in muddy compared to sandy sedi...

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Bibliographic Details
Published in:Geo-marine letters 1996-08, Vol.16 (3), p.196-203
Main Authors: Richardson, M. D., Briggs, K. B.
Format: Article
Language:English
Subjects:
Marine
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Summary:Near-surface sediment geoacoustic and physical properties were measured in gas-rich, muddy sediments of Eckernfoerde Bay, Baltic Sea, and in hard-packed, sandy sediments of the northeastern Gulf of Mexico. Values of compressional and shear wave velocity are much lower in muddy compared to sandy sediments. The spatial and temporal variability of sediment physical and geoacoustic properties and, as a consequence, the scattering and propagation of high-frequency acoustic waves are primarily related to the presence and absence of free methane gas bubbles at the muddy site and to the abundance and distribution of shell material on sandy sediments.
ISSN:0276-0460
1432-1157
DOI:10.1007/BF01204509