海底沉积物声速经验方程的分析和研究

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

1.
广东工业大学, 机电学院, 广东, 广州, 510090
2.
中国科学院, 南海海洋研究所, 边缘海地质重点实验室, 广东, 广州, 510301

基金项目: 国家自然科学基金资助项目(40476020)

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- 文章访问数: 939
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出版历程
- 收稿日期: 2006-06-14
- 修回日期: 2006-10-26

Analysis and study on the sound velocity empirical equations of seafloor sediments

1.
Faculty of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510090, China
2.
Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China

摘要

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.
- 海底沉积物 /
- 物理参数 /
- 声速 /
- 预报方程
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 short comings in the single-parameter and some double-parameter equations with ambiguity of physical significance and complexity in the multi-parameter equation also.Atheoretical 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 shelfare applied to verifying the superiority of porosity-water-content double-parameter equation set up in contrast with other equations.
- seafloor sediments /
- physical parameter /
- sound velocity /
- forecasting equation

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参考文献(21)

GB/T50123-1999,土工试验方法标准[S].

卢博.海底浅层沉积物声速与物理性质[J].科学通报,1994,39(5):435-437.

卢博,李赶先,黄韶健.南沙海域浅层沉积物声速与物理参数的相关关系[A].南沙海域声光场研究论文集[C].北京:海洋出版社,1996.9-22.

HAMILTON E L.Geoacoustic modeling of the sea floor[J].Acoustical Society of America,1980,68:1 313-1 340.

ANDERSON R S.Statistical correlation of physical properties and sound velocity in sediments[A].Physical of Sound in Marine Sediment[C].NY:PlenumPress,1974.481-518.

ORSI T H,DUNN D A.Sound velocity and related physical properties of fine-grained abyssal sediments from the Brazil Basin (South AtlanticOcean)[J].Acoustical Society of America,1990,88(3):1 536-1 543.

周志愚,杜继川,赵广存,等.南海、黄海海底声速垂直分布的测量结果[J].海洋学报,1983,5(5):543-552.

唐永禄.海底沉积物孔隙度与声速的关系[J].海洋学报,1998,20(6):39-43.

卢博,李赶先,孙东怀,等.中国东南近海海底沉积物声学物理性质及其相关关系[J].热带海洋学报,2006,25(2):12-17.

BUCHMAN R T.Acoustic and physical property relationships in marine sediment[J].Acoustical Society of America,1985,78 (2):616-621.

CHEN Min-pen,SHIEH Ying-tzung,CHYAN Jan-ming.Acoustic and physical properties of surface sediments in northern Taiwan Strait[J].Acta Oceanographica Taiwanica.1988,21:92-118.

HAMILTON E L.Sound velocity-density relations in sea floor sediments and rocks[J].Acoustical Society of America,1957,63 (2):366-377.

王让甲.声波岩石分级和岩石弹性力学参数的分析研究[M].北京:地质出版社,1997.1-56.

梁元博,卢博.海底沉积物力学性质影响声速的物理机制[J].海洋学报,1985,7(1):111-119.

卢博,梁元博.鹿回头大陆架海底沉积物理化性质的研究[A].热带海洋研究(一)[C].北京:海洋出版社,1984.39-51.

梁元博,卢博,曾勇.珠江口大陆架底质的声学特性初探[J].南海海洋科学集刊,1987,8:101-109.

卢博,梁元博.南海高、低声速底质的沉积物理学特征[A].热带海洋研究(二)[C].北京:海洋出版社,1986.37-44.

赵红丽,唐应吾.影响松散高孔隙度沉积物中声速的一些因素[J].青岛海洋大学学报(自然科学版),2003,16(1):37-39.

WYLLIE M R J,GREGORY A R,GARDNER L W.Elastic wave velocities in heterogeneous and porous media[J].Geophysics,1956,21(1):41-70.

TOKSOZ M N,CHENG C H,TIMUR A.Velocities of seismic waves in porous rocks[J].Geophysics,1976,41(4):621-645.

卢博.东沙群岛海域沉积物及其物理学性质的研究[J].海洋学报,1996,18(6):82-89.

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