Laboratory measurements of acoustic properties for marine fluid-mud deposits

doi:10.1109/COA.2016.7535648

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

	Laboratory measurements of acoustic properties for marine fluid-mud deposits
	Liu Xiaolei 1; Zheng Jiewen 2; Liu Baohua 3; Jia Yonggang 4; Sun Lei 5; IEEE
	2016
会议日期	1 9, 2016 - 1 11, 2016
会议地点	Harbin, China
关键词	fluid mud acoustic properties Principal Component Analysis seabed sediment
DOI	10.1109/COA.2016.7535648
英文摘要	Knowledge about fluid mud acoustic properties is a key to understanding acoustic wave propagation in sediments and is very important for military oceanography and ocean engineering, especially for the typical rapid depositional areas of estuaries and coasts. The acoustic parameters of fluid mud are essential to the in-situ measurement of the thickness and physical properties of fluid mud. In this paper, we examine the acoustic properties of fluid-mud deposits that were experimentally formed in a settling tank during the natural settling processes of natural seabed sediment. The relationships between the acoustic properties and the sediment's physical parameters were then analyzed based on Principal Component Analysis (PCA). Results demonstrate that the sound velocity of fluid mud changes with mean grain size, clay content, silt content, and sediment concentration, with no obvious frequency dependency. For the fluid mud with the mean grain size ranging from 4.54 similar to 6.434 mu m, clay content ranging from 8.25 similar to 28.85%, silt content ranging from 66.33 similar to 72.88%, sediment concentration ranging from 0.32 similar to 1.29 g/cm(3), sound velocity changes from 1371.4 m/s to 1648.4%. In terms of a single variable, sound velocity showed an increment with sediment concentration and a decrement with mean grain size and clay content both with a nonlinear dependence, but with a low correlation coefficient. The multivariate function equation describing the relationship between fluid mud properties and sound velocity was constructed using the PCA-based 2-D eigenvalues, which for velocity inversion conform to a linear relation with the slope and intercept of 1.525 similar to 1.883 and 2.288 similar to 2.665, respectively.
会议录	2016 IEEE/OES CHINA OCEAN ACOUSTICS SYMPOSIUM (COA)
会议录出版者	IEEE
会议录出版地	345 E 47TH ST, NEW YORK, NY 10017 USA
语种	英语
WOS研究方向	Acoustics ; Engineering
WOS记录号	WOS:000390300800033
内容类型	会议论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/4994]
专题	业务部门_海洋地质与地球物理研究室
作者单位	1.Ocean Univ China, Shandong Prov Key Lab Marine Environm & Geol Engn, Qingdao, Peoples R China; 2.SOA, FIO, Key Lab State Ocean Adm Marine Sedimentol & Envir, Qingdao, Peoples R China; 3.Natl Deep Sea Ctr, Qingdao, Peoples R China; 4.Dept Environm Sci & Engn, Qingdao, Peoples R China; 5.SOA, Inst Oceanog 1, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Liu Xiaolei,Zheng Jiewen,Liu Baohua,et al. Laboratory measurements of acoustic properties for marine fluid-mud deposits[C]. 见:. Harbin, China. 1 9, 2016 - 1 11, 2016.