Measurement and Modeling of High‐Frequency Acoustic Properties in Fine Sandy Sediments
Measurement and Modeling of High‐Frequency Acoustic Properties in Fine Sandy Sediments
复制标题
细砂沉积物高频声学特性的测量和建模
DOI：
10.1029/2019ea000656
复制
发表时间：
2019-11
影响因子：
3.1
通讯作者：
王景强
中科院分区：
文献类型：
--
作者：
王景强
本研究的目的是获得细桑迪沉积物的声学特性，约22%的粘粒含量从东海陆架。本研究采用现场声学测量方法测量了沉积物的声速和衰减，并采集了8个沉积物柱状样，在实验室环境中测量了湿容重、孔隙度和平均粒径。现场声速比与物性的相关关系符合两个经验公式，而现场衰减因子偏离了回归曲线。声速比和衰减数据均随测量频率发生明显变化。将测量的声速比和衰减与毕奥-斯托尔模型预测进行比较。当使用扩展的Kozeny卡曼方程和扩展的Hovem方程计算渗透率和孔径时，声速比频散与模型预测吻合良好。在这项研究中的衰减数据符合较好的预测曲线报告细泥沙比粗泥沙1999年沉积物声学实验。
The object of this study was to obtain the acoustic properties of fine sandy sediments with approximately 22% clay content from the East China Sea Shelf. This study conducted the in situ acoustic measurement to measure the sound speed and attenuation, and eight sediment cores were collected and measured the wet bulk density, porosity, and mean grain size in laboratory environment. The correlations between in situ sound speed ratio and physical properties show good accordance with two empirical equations, while the in situ attenuation factor deviated the regression curves. Both the sound speed ratio and the attenuation data show the obvious change against the measurement frequency. The comparisons of the measured sound speed ratio and attenuation to the Biot‐Stoll model predictions were performed. The sound speed ratio dispersion agrees well with the model prediction, when the permeability and pore size were calculated using the extended Kozeny‐Carman's equation and the extended Hovem's equation. The attenuation data in this study accords better with the prediction curves reported for fine sediments than that for coarse sediments from the 1999 Sediment Acoustics Experiment.
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DOI：
10.1121/1.1412449
发表时间：
2001-10
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
K. Williams
通讯作者：
K. Williams
影响因子：
2.4
作者：
C. Holland;B. Brunson
通讯作者：
C. Holland;B. Brunson
影响因子：
4.2
作者：
Hak-Sung Kim;G. Cho;J. Lee;Se-Joon Kim
通讯作者：
Hak-Sung Kim;G. Cho;J. Lee;Se-Joon Kim
影响因子：
4.1
作者：
E. Nosal;Chunhui Tao;S. Baffi;S. Fu;M. Richardson;R. Wilkens
通讯作者：
E. Nosal;Chunhui Tao;S. Baffi;S. Fu;M. Richardson;R. Wilkens
DOI：
10.1121/1.1810231
发表时间：
2005-01
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
M. Buckingham
通讯作者：
M. Buckingham