Influence of hydrostatic pressure on the sound speed of surficial seafloor sediments

doi:10.1080/1064119X.2017.1409300

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋地质与地球物理研究室

	Influence of hydrostatic pressure on the sound speed of surficial seafloor sediments
	Zou, Dapeng 1; Kan, Guangming 2; Long, Jianjun 1,3; Xiao, Tibing 1
刊名	Marine Georesources and Geotechnology
	2018
卷号	37 期号:3 页码:1-5
关键词	Controlled experiment Geoacoustics Pressure and temperature Sea floor Seafloor sediments Sound speed Theoretical calculations Theoretical modeling
ISSN号	1064119X
DOI	10.1080/1064119X.2017.1409300
英文摘要	Changes in seawater depth could cause variations of hydrostatic pressure and temperature conditions in surficial seafloor sediments. As a result, the sound speed of the sediments would change. Studies seldom have focused on the influence of hydrostatic pressure on such. According to calculations of the general model of sound speed (GMSS), the sound speed of sediment increased linearly when the hydrostatic pressure increased, the same trend as that of the seawater. Pressure-controlled experiments in the laboratory verified that the influence of hydrostatic pressure on the sediment sound speed was highly related to the pore water, which was consistent with the theoretical calculations from the GMSS. Hydrostatic pressure was found to have the same effect on sound speed for the three kinds of sediments: gravel-silty sand, clayey silt, and silty clay. For different hydrostatic pressures up to 40 MPa, the fluctuation of sound speed ratio calculated with the theoretical model was less than 1.96%, while that measured in the controlled experiment was less than 2.63%. This means that if the sound speed ratio is used as a constant to correct for the difference at different seawater depths of no more than 4000 m, the estimable error is about 2.63%. © 2017 Taylor & Francis
电子版国际标准刊号	15210618
资助项目	State Key Laboratory of Acoustics, Chinese Academy of Sciences[SKLA201606]
WOS研究方向	Engineering ; Oceanography ; Mining & Mineral Processing
语种	英语
出版者	Taylor and Francis Ltd.
WOS记录号	WOS:000476899100001
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/6438]
专题	业务部门_海洋地质与地球物理研究室
作者单位	1.Guangdong Provincial Key Lab of Computer Integrated Manufacturing, Guangdong University of Technology, Guangzhou, China;; 2.Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, SOA, Qingdao, China;; 3.Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, CAS, Guangzhou, China
推荐引用方式 GB/T 7714	Zou, Dapeng,Kan, Guangming,Long, Jianjun,et al. Influence of hydrostatic pressure on the sound speed of surficial seafloor sediments[J]. Marine Georesources and Geotechnology,2018,37(3):1-5.
APA	Zou, Dapeng,Kan, Guangming,Long, Jianjun,&Xiao, Tibing.(2018).Influence of hydrostatic pressure on the sound speed of surficial seafloor sediments.Marine Georesources and Geotechnology,37(3),1-5.
MLA	Zou, Dapeng,et al."Influence of hydrostatic pressure on the sound speed of surficial seafloor sediments".Marine Georesources and Geotechnology 37.3(2018):1-5.