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

ZHANG Yanxin; GUO Changsheng; WANG Jingqiang; HOU Zhengyu; CHEN Wenjing

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

机译：青岛近海海域沉积物原位声速与颗粒特征的关系

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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.Furure work includes the calibration of the laboratory acoustic measurements with an in situ technique.

机译：浅海海底沉积物的声速可为港口设计以及海洋和海岸工程项目提供重要信息。在本研究中，采用现场测量方法获得了青岛近海45个站点的精确沉积声速。分析了海底沉积物的声速和颗粒性质。声速随含沙量，砂土比，分选系数的增加而增加;随平均粒径和黏土含量的增加呈非线性下降的趋势。分布图，表明声速与地质环境密切相关。汉密尔顿，安德森和刘提出的先前经验方程用于计算晶粒度的速度。实测速度与计算速度的比较表明实测速度方程具有地域限制，广泛的数据对于建立全局e是必不可少的下一步工作包括使用现场技术对实验室声学测量进行校准。

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《中国海洋湖沼学报（英文版）》 |2017年第3期|704-711|共8页
作者
ZHANG Yanxin; GUO Changsheng; WANG Jingqiang; HOU Zhengyu; CHEN Wenjing;
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作者单位

Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071,China;

University of Chinese Academy of Sciences, Beijing 100049, China;

Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071,China;

Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, State Oceanic Administration(SOA), Qingdao 266061, China;

Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071,China;

University of Chinese Academy of Sciences, Beijing 100049, China;

Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071,China;

University of Chinese Academy of Sciences, Beijing 100049, China;

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
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正文语种 eng
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Relationship between in situ sound velocity and granular characteristics of seafloor sediments in the Qingdao offshore region

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