Comparison of sound speed and attenuation measurements to the corrected effective density fluid model for gassy sediments.

Abstract

To validate the corrected effective density fluid model for gassy sediments, an acoustic experiment was undertaken to measure the sound speed and attenuation in the frequency band of 10 to 120 kHz in a laboratory tank. Sound speed and attenuation each have four peaks, with a one-to-one correspondence between them. The optimal bubble size distribution modeled by five continuous modified Gaussian functions is obtained from inversion of sound speed and attenuation data. The measured sound speed and attenuation are in good agreement with the predicted results.