Sound speed structure models of seafloor sediments in the Southern South China Sea

doi:10.1109/COA.2016.7535616

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

	Sound speed structure models of seafloor sediments in the Southern South China Sea
	Wang, Jingqiang 1; Han, Guozhong 1; Xie, Qiuhong 1; Guo, Changsheng 2; Hou, Zhengyu 2; Liu, Baohua 3
	2016-08-05
会议日期	1 9, 2016 - 1 11, 2016
会议地点	Harbin, China
DOI	10.1109/COA.2016.7535616
英文摘要	The various sedimentary environments and the several sediment sources indicate that seafloor sediments in the southern South China Sea have unique acoustic research significance. The direct sound speed measurements of seafloor sediments are particularly valuable for this study sea, which lacks acoustic data. In order to characterize and develop the sound speed structure models locally depending on sedimentary environment and sediment texture in the southern South China Sea, sound speeds and physical parameters of 21 sediment cores were measured, and vertical distributions of sound speeds and physical properties were obtained. The vertical variations of physical properties and sound speeds indicate that there were obvious differences among the seafloor sediments in Sunda Shelf, in the continental slope and in the Nansha Trough. The sound speed structure models were classified in several categories according to the vertical variations of sound speed, texture parameter and stratified structure of sediments. The categories included: the trough-stratified model; trough-unstratified model; slope-stratified model; slope-unstratified model; shelf-stratified model; and, shelf-unstratified model. The comparison of results indicates that the clay-silt sediments have smaller vertical variation gradient, while the silt-clay and sand-silt sediments have larger variation gradient. These sound speed structure models can reveal the unique acoustic environment significance of surface sediments - at the interface of seawater and the seafloor - and will really be of great help to determine the acoustic properties of seafloor sediments and to populate data relating to the study sea area. © 2016 IEEE.
会议录	2016 IEEE/OES China Ocean Acoustics Symposium, COA 2016
会议录出版者	Institute of Electrical and Electronics Engineers Inc.
语种	英语
内容类型	会议论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/7170]
专题	业务部门_海洋地质与地球物理研究室
作者单位	1.Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, SOA, Qingdao, China; 2.Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; 3.National Deep Sea Center, State Oceanic Administration, Qingdao, China
推荐引用方式 GB/T 7714	Wang, Jingqiang,Han, Guozhong,Xie, Qiuhong,et al. Sound speed structure models of seafloor sediments in the Southern South China Sea[C]. 见:. Harbin, China. 1 9, 2016 - 1 11, 2016.