| 海底沉积物声速经验方程的分析和研究 |
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| 引用本文： | 邹大鹏,吴百海,卢博.海底沉积物声速经验方程的分析和研究[J].海洋学报,2007,29(4):43-50. |
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| 作者姓名： | 邹大鹏 吴百海 卢博 |
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| 作者单位： | 1.广东工业大学, 机电学院, 广东, 广州, 510090 |
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| 基金项目： | 国家自然科学基金资助项目(40476020) |
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| 摘 要： | 比较国内外主要研究者提出的海底沉积物声速单参数、双参数和多参数预报经验方程的物理意义和适用性,提出了孔隙度-含水量预报海底沉积物声速新的双参数公式,该式避免了单一参数预报声速经验方程和某些双参数公式中物理意义不明确以及多参数方程复杂性及对提高预报计算能力效果不显著之处.基于理论分析,改进孔隙度-含水量双参数计算公式得到的通用模型具有明确的物理意义,可以通过修改参数适用于不同海域的声速预报,提高了泛化能力,扩大了适用范围.通过对孔隙度、含水量等物理参数的权值分析研究,更加明确了孔隙度是影响海底沉积物声速大小的最关键参数.用台湾海峡北部、南海海域、珠江口大陆架三处的海域沉积物测量数据比较了不同模型,验证了本模型的优越性.
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| 关 键 词： | 海底沉积物 物理参数 声速 预报方程 |
| 文章编号： | 0253-4193（2007）04-0043-08 |
| 收稿时间： | 2006/6/14 0:00:00 |
| 修稿时间： | 2006-06-14 |
Analysis and study on the sound velocity empirical equations of seafloor sediments |
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| ZOU Da-peng,WU Bai-hai and LU Bo.Analysis and study on the sound velocity empirical equations of seafloor sediments[J].Acta Oceanologica Sinica (in Chinese),2007,29(4):43-50. |
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| Authors: | ZOU Da-peng WU Bai-hai and LU Bo |
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| Institution: | 1.Faculty of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510090, China2.Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China |
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| Abstract: | On the basis of comparison of physical significance and applicability of single-parameter,double-parameter and multi-parameter sound velocity forecasting empirical equation of seafloor sediments,a new porosity-water-content double-parameter equation is put forward.This equation avoids shortcomings in the single-parameter and some double-parameter equations with ambiguity of physical significance and complexity in the multi-parameter equation also.A theoretical analysis is carried out and a correctional porosity-water-content double-parameter equation is set up to act as universal model which has explicit physical significance and high generalization capability by correcting coefficients.As to comparison of weightings of porosity and water content,a key role of porosity among all parameters is confirmed.Measurement data of study samples from the northern Taiwan Strait,the South China Sea and the Zhujiang mouth continental shelf are applied to verifying the superiority of porosity-water-content double-parameter equation set up in contrast with other equations. |
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| Keywords: | seafloor sediments physical parameter sound velocity forecasting equation |
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