Research on Acoustic Properties of Seafloor Sediment with Temperature and Pressure Controlled

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

	Research on Acoustic Properties of Seafloor Sediment with Temperature and Pressure Controlled
	Zou, DP ; Yan, P ; Zhou, JP
刊名	MARINE GEORESOURCES & GEOTECHNOLOGY
	2014
卷号	32 期号:2 页码:93-105
关键词	acoustic in-situ pressure sediment temperature
ISSN号	1064-119X
通讯作者	anthonyzou@126.com
中文摘要	The submarine in-situ environmental state was simulated to study the acoustic properties of seafloor sediments of the South China Sea in different temperature and pressure environments in this article with the application of the small-scale acoustic measurement system of seafloor sediments. Some conclusions could be drawn, including: (1) the velocity and center frequency of sound wave propagation of sediment are influenced by temperature more than by water pressure in different depth; (2) with the temperature rising, the sound velocity and the energy dissipation increase while the center frequency of sound wave propagation decreases; and (3) with the seawater pressure rising, the sound velocity varied little within 1% through a depth of 1500m and the energy dissipation decreases large. So when correcting the laboratory measurement sound speed into the in-situ data, it should be noticed that the influence of temperature differing from the in-situ environment is significant and the influence of water pressure variation may be omitted. The variation of the acoustic attributes of the experimental sample showed greatly nonlinearity when the temperature changes, which might result from a lot of coarse sand and shell remains scattered in the measured sediment sample. Compared to the linear acoustic properties of reconstructed samples with an even structure it is maybe the reason for nonlinear variation of acoustic properties due to the uneven structure. Moreover, the correction method of Hamilton with the sound-speed ratio of sediment to bottom seawater should be used with caution due to the nonlinear variation character.
学科主题	Engineering ; Oceanography ; Mining & Mineral Processing
收录类别	SCI
资助信息	State Key Laboratory of Acoustics, Institute of Acoustics, CAS [SKLOA201003]; National Nature Science Foundation of China [41106030]; scientific research fund of, Second Institute of Oceanography, State Oceanic Administration [JT1201]
原文出处	TAYLOR & FRANCIS INC
WOS记录号	WOS:000331601200001
公开日期	2014-12-11
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/10627]
专题	南海海洋研究所_中科院边缘海地质重点实验室
推荐引用方式 GB/T 7714	Zou, DP,Yan, P,Zhou, JP. Research on Acoustic Properties of Seafloor Sediment with Temperature and Pressure Controlled[J]. MARINE GEORESOURCES & GEOTECHNOLOGY,2014,32(2):93-105.
APA	Zou, DP,Yan, P,&Zhou, JP.(2014).Research on Acoustic Properties of Seafloor Sediment with Temperature and Pressure Controlled.MARINE GEORESOURCES & GEOTECHNOLOGY,32(2),93-105.
MLA	Zou, DP,et al."Research on Acoustic Properties of Seafloor Sediment with Temperature and Pressure Controlled".MARINE GEORESOURCES & GEOTECHNOLOGY 32.2(2014):93-105.