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

doi:10.1080/1064119X.2017.1409300

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 中科院边缘海地质重点实验室

	Influence of hydrostatic pressure on the sound speed of surficial seafloor sediments
	Zou, Dapeng ; Kan, Guangming 3; Long, Jianjun 1; Xiao, Tibing
刊名	MARINE GEORESOURCES & GEOTECHNOLOGY
	2019
卷号	37 期号:3 页码:277
关键词	Geoacoustics in situ pressure seafloor sediment sound speed
ISSN号	1064-119X
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%.
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/17974]
专题	南海海洋研究所_中科院边缘海地质重点实验室
作者单位	1.SOA, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Shandong, Peoples R China 2.Chinese Acad Sci, Key Lab Marginal Sea Geol, South China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China 3.Guangdong Univ Technol, Guangdong Prov Key Lab Comp Integrated Mfg, Guangzhou, Guangdong, Peoples R 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 & GEOTECHNOLOGY,2019,37(3):277, 281.
APA	Zou, Dapeng,Kan, Guangming,Long, Jianjun,&Xiao, Tibing.(2019).Influence of hydrostatic pressure on the sound speed of surficial seafloor sediments.MARINE GEORESOURCES & GEOTECHNOLOGY,37(3),277.
MLA	Zou, Dapeng,et al."Influence of hydrostatic pressure on the sound speed of surficial seafloor sediments".MARINE GEORESOURCES & GEOTECHNOLOGY 37.3(2019):277.