Sediment Acoustics describes the development of a mathematical model to be used to predict the propagation characteristics of acoustic waves in marine sediments. The model is based on the classical theory of Maurice Biot. Over the past 20 years, R.D. Stoll has published many technical papers covering various stages of development and different applications of Biot's theory. This work is summarized in one reference volume for the first time and presents enough introductory material so that researchers and students may use the model without extensive literature searches. Scientists working in the areas of acoustical oceanography, marine seismology, and ocean engineering will find this monograph useful in predicting the wave velocity and attenuation of seafloor sediments based on the geology of an area and such measurable physical properties as porosity and geostatic stress. A simple, interactive computer program is given as an aid in calculating velocity and attenuation, and a number of examples from recent field experiments are presented so that the predictions of the model may be compared with the "ground truth."
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Idealized Granular Media
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Acoust AMCOR amplitude ASCE axial Biot theory bulk modulus clay complex modulus components compressibility constant complex modulus coso damping data band density determined dilatational waves effective stress elastic equations experiments factor fluid motion foc array frequency dependent Frequency Hz frequency range Geophysics grain Hamilton Hardin INPUT interface intergranular isotropic kind laboratory layer loading log decrement logarithmic decrement low frequencies Marine Sediments measured Mech Mindlin normal º º obtained Ottawa sand overall overburden pressure p-waves particles permeability phase velocity plane pore fluid porosity Porous predicted Propagation real sediments reflection coefficient refracted relative resonant column response sample saturated sediment shear modulus shear strain shear wave shown in Fig silt skeletal frame Soil specimen spheres squeeze film Stoll strain amplitude tangential traction Tappan Zee bridge torsional unjacketed unloading path values variables viscoelastic viscoelastic model viscous losses voids ratio wave velocity