Relationship between in situ sound velocity and granular characteristics of seafloor sediments in the Qingdao offshore region

IOCAS-IR

	Relationship between in situ sound velocity and granular characteristics of seafloor sediments in the Qingdao offshore region
	Zhang YX(张严心); Guo CS(郭常升); Wang JQ(王景强); Hou ZY(侯正瑜); Chen WJ(陈文景)
发表期刊	Chinese Journal of Oceanology and Limnology
ISSN	0254-4059
	2017-05-15
出版年	2017
卷号	v.35 期号:03 页码:238-245
文献类型	CNKI期刊论文
摘要	The sound velocity of seafloor sediments from shallow seas can provide important information for harbor design, and ocean and seacoast engineering projects. In this study, in situ measurements were used to obtain accurate sediment sound velocities at 45 stations offshore of Qingdao. The relationships between the sound velocity and granular properties of the seafloor sediments were analyzed. Sound velocity showed an increase with the sand content, sand-clay ratio, and sorting coefficient; and a nonlinear decreasing trend with increasing mean grain size and clay content. We plotted a sound velocity distribution map, which shows that the sound velocity was closely related to the geological environment. Previous empirical equations suggested by Hamilton, Anderson, and Liu were used to calculate the velocity with grain size. A comparison between the measured and calculated velocities indicates that the empirical equations have territorial limitations, and extensive data are essential to establish global empirical equations. Future work includes the calibration of the laboratory acoustic measurements with an in situ technique.
关键词	sound velocity granular properties empirical equation
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A010;A011;
CNKI专题名称	海洋学;地质学;
分类号	P733.2;P736.21
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	Supported by the National Special Research Fund for Non-Profit Marine Sector(No.200905025)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/189314
专题	中国科学院海洋研究所
作者单位	1.KeyLaboratoryofMarineGeologyandEnvironment,InstituteofOceanology,ChineseAcademyofSciences 2.UniversityofChineseAcademyofSciences 3.KeyLaboratoryofMarineSedimentologyandEnvironmentalGeology,FirstInstituteofOceanography,StateOceanicAdministration(SOA)
推荐引用方式 GB/T 7714	Zhang YX,Guo CS,Wang JQ,et al. Relationship between in situ sound velocity and granular characteristics of seafloor sediments in the Qingdao offshore region. 2017.