| 中国黄渤海沉积物声速与物理性质研究 |
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| 引用本文： | 郑杰文,刘保华,阚光明,李官保,裴彦良,刘晓磊.中国黄渤海沉积物声速与物理性质研究[J].海洋学报(英文版),2016,35(7):76-86. |
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| 作者姓名： | 郑杰文 刘保华 阚光明 李官保 裴彦良 刘晓磊 |
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| 作者单位： | 国家海洋局第一海洋研究所, 海洋沉积与环境地质国家海洋局重点实验室, 青岛, 266061;青岛海洋科学与技术国家实验室, 海洋地质过程与环境功能实验室, 青岛, 266237,国家深海基地管理中心, 青岛, 266237,国家海洋局第一海洋研究所, 海洋沉积与环境地质国家海洋局重点实验室, 青岛, 266061;青岛海洋科学与技术国家实验室, 海洋地质过程与环境功能实验室, 青岛, 266237,国家海洋局第一海洋研究所, 海洋沉积与环境地质国家海洋局重点实验室, 青岛, 266061;青岛海洋科学与技术国家实验室, 海洋地质过程与环境功能实验室, 青岛, 266237,国家海洋局第一海洋研究所, 海洋沉积与环境地质国家海洋局重点实验室, 青岛, 266061;青岛海洋科学与技术国家实验室, 海洋地质过程与环境功能实验室, 青岛, 266237,青岛海洋科学与技术国家实验室, 海洋地质过程与环境功能实验室, 青岛, 266237;中国海洋大学, 山东省海洋环境地质工程重点实验室, 青岛, 266061 |
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| 基金项目： | The National Natural Science Foundation of China under contract Nos 41106061, 41506077, 41330965 and 41402253; the Specialized Research Fund of First Insititute of Oceanography under contract No. GY0215G06; the Public Science and Technology Research Funds Projects of Ocean of State Oceanic Administration under contract No. 201405032. |
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| 摘 要： | In order to investigate the correlation between a sound velocity and sediment bulk properties and explore the influence of frequency dependence of the sound velocity on the prediction of the sediment properties by the sound velocity,a compressional wave velocity is measured at frequencies of 25–250 k Hz on marine sediment samples collected from the Bohai Sea and the Yellow Sea in laboratory,together with the geotechnical parameters of sediments.The results indicate that the sound velocity ranges from 1.232 to 1.721 km/s for the collected sediment samples with a significant dispersion within the series measuring frequency.Poorly sorted sediments are highly dispersive nearly with a positive linear relationship.The porosity shows a better negative logarithmic correlation with the sound velocity compared with other geotechnical parameters.Generally,the sound velocity increases with the increasing of the average particle size,sand content,wet and dry bulk densities,and decreasing of the clay content,and water content.An important point should be demonstrated that the higher correlation can be obtained when the measuring frequency is low within the frequency ranges from 25 to 250 k Hz since the inhomogeneity of sediment properties has a more remarkably influence on the laboratory sound velocity measurement at the high frequency.
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| 关 键 词： | 声速 粒度组分 物理性质 频散 经验关系函数 |
| 收稿时间： | 7/9/2015 12:00:00 AM |
| 修稿时间： | 2015/9/24 0:00:00 |
The sound velocity and bulk properties of sediments in the Bohai Sea and the Yellow Sea of China |
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| ZHENG Jiewen,LIU Baohu,KAN Guangming,LI Guanbao,PEI Yanliang and LIU Xiaolei.The sound velocity and bulk properties of sediments in the Bohai Sea and the Yellow Sea of China[J].Acta Oceanologica Sinica,2016,35(7):76-86. |
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| Authors: | ZHENG Jiewen LIU Baohu KAN Guangming LI Guanbao PEI Yanliang and LIU Xiaolei |
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| Institution: | 1.Key Laboratory of Marine Sedimentology and Environmental Geology of State Oceanic Administration, State Oceanic Administration, Qingdao 266061, China;First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China2.Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China3.First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;National Deep Sea Center, State Oceanic Administration, Qingdao 266237, China |
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| Abstract: | In order to investigate the correlation between a sound velocity and sediment bulk properties and explore the influence of frequency dependence of the sound velocity on the prediction of the sediment properties by the sound velocity, a compressional wave velocity is measured at frequencies of 25-250 kHz on marine sediment samples collected from the Bohai Sea and the Yellow Sea in laboratory, together with the geotechnical parameters of sediments. The results indicate that the sound velocity ranges from 1.232 to 1.721 km/s for the collected sediment samples with a significant dispersion within the series measuring frequency. Poorly sorted sediments are highly dispersive nearly with a positive linear relationship. The porosity shows a better negative logarithmic correlation with the sound velocity compared with other geotechnical parameters. Generally, the sound velocity increases with the increasing of the average particle size, sand content, wet and dry bulk densities, and decreasing of the clay content, and water content. An important point should be demonstrated that the higher correlation can be obtained when the measuring frequency is low within the frequency ranges from 25 to 250 kHz since the inhomogeneity of sediment properties has a more remarkably influence on the laboratory sound velocity measurement at the high frequency. |
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| Keywords: | sound velocity particle composition physical properties frequency dispersion empirical equation |
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