基于时间平均的海底沉积物声速预测

王方旗; 亓发庆; 姚菁; 胡光海; 董立峰; 陶常飞

基于时间平均的海底沉积物声速预测

1.
国家海洋局第一海洋研究所青岛海洋工程勘察设计研究院, 山东青岛 266061
2.
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, 山东青岛 266061

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出版历程
- 收稿日期: 2010-09-26
- 修回日期: 2011-05-20

A study on forecasting sound velocity of sea-floor sediments based on the time-average method

1.
Qingdao Marine Engineering Prospecting & Design Institute, First Institute of Oceanography, State Oceanic Administralion, Qingdao 266061, China
2.
Key Laboratory of State Oceanic Administration for Marine Sedimentology & Environmental Geology, First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China

摘要

摘要: 在海底沉积物声速预测中,把不同海域的物理性质完全不同的沉积物试验数据拟合出一个统一的方程存在不足,不但数据过于离散,而且方程中参量的物理意义不明确。借鉴Wyllie等建立的时间平均方程的思路,基于声传播过程中路程、时间和声速之间的基本关系,引入了表征固液双相之间的堆垒方式和耦合状态对声传播路径影响的耦合系数,建立了沉积物声速预测模型。将鹿回头外海、南海南部和北部的沉积物测量数据进行线性回归分析,分别得出适用于不同海域的沉积物声速预测模型,拟合的复相关系数较大,偏差较小,证明该模型能够反映声速随孔隙度的变化规律,且各参数物理意义明确,具有一定的研究和理论探索意义。
- 时间平均 /
- 海底沉积物 /
- 声速预测 /
- 孔隙度
Abstract: When predicting the sound velocity of sea-floor sediments, is not appropriate to sum up a uniform empirical equation from the sea-floor sediment data of different sea areas, where the sea-floor sediment’s physical properties are even completely different. Not only the data are discrete too, but the parameters in the equation are lack of exact physical meaning. Based on the idea of Wyllie’s time-average equation, a sea-floor sediment sound velocity forecasting model is established with the relationship of distance, time and velocity. In the model, the introduced parameter coupling coefficient stands for the impact of stacking and coupling mode of a solid-liquid two-phase system on a sound propagation.The measurement data of sea-floor sediment samples from offshore Luhuitou, the southern and northern South China sea are applied to verifying the model, and three different sound velocity forecasting equations are fitted out. The conclusion is the model can exactly reflect the relation between sound velocity and porosity, moreover, the parameters in the model have physical meaning.
- time-average /
- sea-floor sediments /
- sound velocity forecast /
- porosity

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参考文献(17)

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

HAMILTON E L. Geoacoustic modeling of the sea floor[J]. Acoustical Society of America, 1980, 68: 1313-1340.

ANDERSON R S. Statistical correlation of physical properties and sound velocity in sediments //Physical of Sound in Marine Sediment.NY: Plenum Press, 1974: 481-518.

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.

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.

CHEN Minpen, SHIEH Yingtzung, CHYAN Janming. Acoustic and physical properties of surface sediments in northern Taiwan Strait[J]. Acta Oceanographica Taiwanica, 1988, 21: 92-118.

ORSI T H, DUNN D A. Sound velocity and related physical properties of fine-grained abyssal sediments from the Brazil Basin(South Atlantic Ocean)[J]. Acoustical Society of America, 1990, 88(3): 1536-1543.

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,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.

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.

邹大鹏,吴百海,卢博. 海底沉积物声速经验方程分析和研究[J]. 海洋学报, 2007, 29(4): 43-50.

Wyllie M R J, GREGORY A R, GARDNER G H F. An experimental investigation of factors affecting elastic wave velocities in porous media[J]. Geophysics, 1958, 23: 459-495.

卢博,黄韶健,李赶先,等. 在不同沉积物类型中的声速测量实验研究[J]. 海洋技术, 2004, 23(1): 66-70.

卢博,梁元博. 鹿回头大陆架海底沉积物理化性质的研究 //热带海洋研究(一).北京:海洋出版社,1984: 39-51.

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 //南沙海域声光场研究论文集.北京: 海洋出版社, 1996:9-22.

罗忠辉,卢博. 基于主元分析技术的海底沉积物声速预报方程[J]. 热带海洋学报, 2009, 28(3): 29-34.

卢博,李赶先,黄韶健,等. 中国黄海、东海和南海北部海底浅层沉积物声学物理性质之比较[J]. 海洋技术, 2005, 24(2): 28-33.

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