title: In situ measurements of velocity dispersion and attenuation in New Jersey Shelf sediments.
abstract: The existence of acoustic velocity dispersion and frequency dependence of attenuation in marine sediments is investigated using in situ measurements from a wideband acoustic probe system during the Shallow Water 2006 experiment. Direct-path pulse propagation measurements show evidence of velocity dispersion within the 10-80 kHz frequency band at two silty-sand sites on the New Jersey Shelf. The measured attenuation in dB/m shows linear frequency dependency within the 10-80 kHz frequency band. The measured velocity dispersion and attenuation curves are in good agreement with those predicted by an extended Biot theory [Yamamoto and Turgut, J. Acoust. Soc. Am. 83, 1744-1751 (1988)] for sediments with a distribution of pore sizes.
authors.forename: Altan
authors.initials: A
authors.lastname: Turgut
authors.forename: Tokuo
authors.initials: T
authors.lastname: Yamamoto
mesh_terms: D000162:Acoustics; D001267:Atlantic Ocean; D019015:Geologic Sediments; D008962:Models, Theoretical; D009038:Motion; D009515:New Jersey; D016062:Porosity; D011825:Radar; D013016:Sound; D013997:Time Factors; D014783:Viscosity