title: Sound speed in water-saturated glass beads as a function of frequency and porosity.
abstract: Sound propagation in water-saturated granular sediments is known to depend on the sediment porosity, but few data in the literature address both the frequency and porosity dependency. To begin to address this deficiency, a fluidized bed technique was used to control the porosity of an artificial sediment composed of glass spheres of 265 μm diameter. Time-of-flight measurements and the Fourier phase technique were utilized to determine the sound speed for frequencies from 300 to 800 kHz and porosities from 0.37 to 0.43. A Biot-based model qualitatively describes the porosity dependence.
authors.affiliation: Department of Mechanical Engineering and Applied Research Laboratories, The University of Texas, Austin, Texas 78713-8029, USA. targo@mail.utexas.edu
authors.forename: Theodore F
authors.initials: TF
authors.lastname: Argo
authors.forename: Matthew D
authors.initials: MD
authors.lastname: Guild
authors.forename: Preston S
authors.initials: PS
authors.lastname: Wilson
authors.forename: Matthias
authors.initials: M
authors.lastname: Schröter
authors.forename: Charles
authors.initials: C
authors.lastname: Radin
authors.forename: Harry L
authors.initials: HL
authors.lastname: Swinney
mesh_terms: D000162:Acoustics; D002138:Calibration; D019015:Geologic Sediments; D005898:Glass; D008962:Models, Theoretical; D016062:Porosity; D014867:Water
chemical_list: D014867:Water