A corrected effective density fluid model for gassy sediments.
A corrected effective density fluid model is developed for predicting sound speed dispersion and attenuation coefficient in gassy sediments. An acoustic experiment was undertaken to measure the attenuation coefficient in a frequency band of 600 to 3000 Hz in gassy unsaturated sand. The measured frequency spectra of the attenuation coefficient show four peaks due to bubble resonance. Then a method of using several modified Gaussian functions to model bubble size distribution is proposed to fit measured attenuation data, which shows that the magnitudes of the fitted model attenuation coefficients are broadly in agreement with those measured attenuation data.
Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China 276454158@qq.com, huangyiwang@Hrbeu.edu.cn, 595430535@qq.com, 13889459215@163.com, wangfei@hrbeu.edu.cn.
Guangying
G
Zheng
Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China 276454158@qq.com, huangyiwang@Hrbeu.edu.cn, 595430535@qq.com, 13889459215@163.com, wangfei@hrbeu.edu.cn.
Yiwang
Y
Huang
Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China 276454158@qq.com, huangyiwang@Hrbeu.edu.cn, 595430535@qq.com, 13889459215@163.com, wangfei@hrbeu.edu.cn.
Jian
J
Hua
Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China 276454158@qq.com, huangyiwang@Hrbeu.edu.cn, 595430535@qq.com, 13889459215@163.com, wangfei@hrbeu.edu.cn.
Xiuyu
X
Xu
Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China 276454158@qq.com, huangyiwang@Hrbeu.edu.cn, 595430535@qq.com, 13889459215@163.com, wangfei@hrbeu.edu.cn.
Fei
F
Wang