| 海底沉积物颗粒因素在不同频率下对声衰减的影响 |
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| 引用本文： | 刘强,卢博,黄韶健,张福生.海底沉积物颗粒因素在不同频率下对声衰减的影响[J].热带海洋学报,2007,26(4):27-31. |
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| 作者姓名： | 刘强 卢博 黄韶健 张福生 |
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| 作者单位： | 1. 中国科学院边缘海地质重点实验室,中国科学院南海海洋研究所,广东,广州,510301
2. 中国科学院南海海洋研究所海洋环境工程中心,广东,广州,510301 |
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| 摘 要： | 综合了多个沉积物声学测量的实验方案,提出适合研究柱状海底沉积物声衰减的实验方案。对黏土质粉砂的物理性质和声学性质作了相关处理,得到了在高、低两种测量频率下该类型沉积物的波形特性、频谱特性和与沉积颗粒因素有关的孔隙度对声衰减比的影响。进一步作了相应的回归分析,低频时方差为0.169—0.175,高频时方差为0.029—0.032,尝试总结出黏土质粉砂类型沉积物在两种频率下的声衰减趋势。
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| 关 键 词： | 海底沉积物 颗粒因素 声衰减 黏土质粉砂 |
| 文章编号： | 1009-5470（2007）04-0027-05 |
| 收稿时间： | 2006-10-13 |
| 修稿时间： | 2006-10-132007-01-11 |
Influences of granule factor of seabed sediments on acoustic attenuation under different frequencies |
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| LIU Qiang,LU Bo,HUANG Shao-jian,ZHANG Fu-sheng.Influences of granule factor of seabed sediments on acoustic attenuation under different frequencies[J].Journal of Tropical Oceanography,2007,26(4):27-31. |
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| Authors: | LIU Qiang LU Bo HUANG Shao-jian ZHANG Fu-sheng |
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| Institution: | 1. Key Laboratory of Marginal Sea Geology of Chinese Academy of Sciences, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; 2. South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China |
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| Abstract: | The paper summarizes different acoustic measurements used in lab and proposes a set of projects for appropriately measuring the acoustic attenuation of seabed sediments. The waveform property, frequency property and relationship between porosity and acoustic attenuation ratio of the sediments under low and high frequencies were obtained by further processing of the physical and acoustic properties of clayed silt. A regression equation is provided, with standard deviations of 0. 169 0. 175/0. 029-0. 032 for low frequency/high frequency. The attenuation trends of clayed silt under two different frequencies are subsequently clarified. |
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| Keywords: | seabed sediment granule factor acoustic attenuation clayed silt |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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