Influence of Environmental Conditions on the Sound Velocity Ratio of Seafloor Surficial Sediment
Influence of Environmental Conditions on the Sound Velocity Ratio of Seafloor Surficial Sediment
复制标题
环境条件对海底表层沉积物声速比的影响
DOI：
10.1007/s11802-021-4628-0
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发表时间：
2021-05
影响因子：
1.6
通讯作者：
Xiao Tibing
中科院分区：
文献类型：
--
作者：
Zou Dapeng;Zeng Ziwen;Kan Guangming;Liu Wei;Xiao Tibing
本文通过对典型环境条件下海底沉积物声速比的理论和实验分析，研究了盐度、温度和静水压力对海底表层沉积物声学特性的影响。进行了温控和压控实验，考察了声速比特性，实验结果与有效密度流体模型的理论分析相吻合。在所考虑的三个环境因素中，声速比对温度和压力敏感，而对盐度不敏感，声速比随温度和静水压力的升高而减小。对于表层沉积物，孔隙水在不同环境因素影响下的沉积物声速比中起着关键作用。不同类型的沉积物(砂质、粉质和粘质)的声速随温度的变化相似，但随静水压力的变化略有不同。环境因素对海底沉积物声速比的影响与探测频率无关。结果表明，在2~25℃温度范围内，声速比可达0.0008/°C；当海水深度压力在0~40 MPa范围内时，声速比可达0.00064 MPa−1。
In this work, we investigated the influences of salinity, temperature, and hydrostatic pressure on the acoustics of seafloor surficial sediment by theoretically and experimentally analyzing the sound velocity ratio of the seafloor sediment to the bottom sea-water in typical environmental conditions. Temperature- and pressure-controlled experiments were conducted to examine the characteristics of the sound velocity ratio, the results of which agree with the theoretical analysis using the effective density fluid model. Of the three environmental factors considered, the sound velocity ratio was found to be sensitive to temperature and pressure but not to salinity, with the sound velocity ratio decreasing with temperature and hydrostatic pressure. With respect to surficial sediments, pore water plays a key role in the sound velocity ratio of sediment influenced by different environmental factors. The sound velocities of different types of sediments (sandy, silty, and clayey) change similarly with temperature, but change slightly differently with hydrostatic pressure. The influence of environmental factors on the sound velocity ratio of seafloor sediment is independent of the detection frequency. The results show that the sound velocity ratio can change up to 0.0008 per °C when the temperature ranges from 2°C to 25°C and up to 0.00064 MPa−1when the seawater depth pressure ranges from 0 MPa to 40 MPa.
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影响因子：
2.1
作者：
M. Richardson;K. Briggs
通讯作者：
M. Richardson;K. Briggs
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
南海南部表层沉积物地声特征分布及相关影响因素
影响因子：
1.4
作者：
Wang Jingqiang;Guo Changsheng;Liu Baohua;Hou Zhengyu;Han Guozhong
通讯作者：
Han Guozhong
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
影响因子：
2.2
作者：
G. Kan;D. Zou;Baohua Liu;Jingqiang Wang;Xiangmei Meng;Guanbao Li;Y. Pei
通讯作者：
G. Kan;D. Zou;Baohua Liu;Jingqiang Wang;Xiangmei Meng;Guanbao Li;Y. Pei