Title :
An explanation for the anomalous ultrasonic slow wave in underwater sand
Author :
Chamuel, Jacques R.
Author_Institution :
Sonoquest Adv. Ultrasonics Res., Wellesley Hills, MA, USA
Abstract :
An explanation is given for the propagation time of the well-known anomalous ultrasonic slow wave observed in water-saturated sand using a three-layer elastic model. The rapid increase of elastic properties of sand with depth causes conversion of near-grazing underwater acoustic waves into multiple coupled shear and compressional waves.
Keywords :
sand; ultrasonic propagation; underwater acoustic propagation; anomalous ultrasonic slow wave propagation; compressional wave; near-grazing acoustic wave; shear wave; three-layer elastic model; underwater sand; Acoustic beams; Acoustic propagation; Acoustic scattering; Acoustic signal detection; Acoustic waves; Couplings; Electrical capacitance tomography; Instruments; Sediments; Underwater acoustics;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
