Additional acoustic attenuation of coastal turbid water——Measurements compared with predictions using particle sizing distributions

The prediction results showed that the viscous absorption of suspended particles is affected by suspended particle size.Based on reverberation method,the viscous absorption of 0.2~2.0 kg/m³ sediment and glass bead turbid seawater was measured.It is shown that the measurement results were more consistent with the prediction results using particle size distributions.By comparison of the prediction results using particle size distributions with that using average particle radius,it was that the discrepancy is 2.3~2.6 dB every 100 meters for 1.0 kg/m³ of sediment turbid seawater in the scope of experimental frequency.It was suggested that the particle size distributions must be used in the predictions of viscous absorption in coastal turbid water.