Effects of sediment parameters on the low frequency acoustic wave propagation in shallow water

bstract The integral expression for acoustic field due to a point source in shallow water while sediment is either a liquid or a solid is derived. The synthetic full waveforms are simulated using real axis integration and FFT method. The effects of the seabed sediment parameters and center frequency of the source on the low frequency acoustic wave propagation in shallow water are investigated. The conclusion is that the wave groups received in far field are those of the mode waves of the source center frequency. The possibility for inversely deducing the compressional and shear sound speeds of sediment using the least square optimum through the measured group velocities of a selected mode at different frequencies is discussed.