多孔介质水平分层海底低频地震波的数值模拟

doi:10.3969/j.issn.1000-1093.2014.12.019

兵工学报 ›› 2014, Vol. 35 ›› Issue (12): 2065-2071.doi: 10.3969/j.issn.1000-1093.2014.12.019

多孔介质水平分层海底低频地震波的数值模拟

卢再华，张志宏，顾建农

（海军工程大学理学院，湖北武汉 430033）

收稿日期:2014-02-24 修回日期:2014-02-24 上线日期:2015-02-06
通讯作者: 卢再华 E-mail:luzaihua01@163.com
作者简介:卢再华（1972—），男，副教授，硕士生导师
基金资助:
国家自然科学基金项目（51179195）；国防基金项目(513030203-02）

A Numerical Simulation of Seismic Wave Caused by Low Frequency Sound Source in Shallow Sea with Thick PorousSediment by Staggered-grid Finite Difference Method

LU Zai-hua, ZHANG Zhi-hong, GU Jian-nong

(College of Science, Naval University of Engineering, Wuhan 430033, Hubei, China)

Received:2014-02-24 Revised:2014-02-24 Online:2015-02-06
Contact: LU Zai-hua E-mail:luzaihua01@163.com

摘要/Abstract

摘要： 舰船低频辐射噪声在海底岩土层中引起的弹性波被称为舰船地震波，可用于识别舰船目标。为获取浅海厚沉积层环境下舰船地震波的传播特性，基于多孔介质波动理论建立海底地震波的三维交错网格有限差分算法，对多孔介质海底低频声源激励的海底地震波进行数值计算。计算结果表明：近场范围内，多孔介质海底地震波的波动成分主要有透射快纵波、透射横波、透射慢纵波和海底界面波；对于远场地震波而言，海水层的波导效应逐渐表现出来，海底地震波的波动成分主要是沿水平方向传播的简正波和海底界面波。

关键词: 振动与波, 多孔介质, 低频, 浅海, 地震波, 交错网格

Abstract: Elastic wave in the seabed caused by low frequency noise radiated from ship is the so-called ship seismic wave which can be used to identify ship target. In order to obtain the propagation characteristics of ship seismic wave in shallow sea with thick porous sediment, a 3D staggered grid finite difference algorithm for calculating seismic wave at seafloor is presented based on Biot wave theory for porous elastic sediment. Numerical calculation of seismic wave caused by low frequency sound source in a typical shallow sea environment is carried out. The calculated results show that the components of seismic wave in the near field include not only fast P-wave, slow P-wave and S-wave transmitted into the sediment, but also an interface wave which propagates nearby the seafloor. However in the far field, the wave components of seismic wave are mainly normal modes and interface wave, the former propagates mainly in the waveguide of sea water and the latter propagates along the seafloor.

Key words: vibration and wave, porous sediment, low frequency, shallow sea, seismic wave, staggered grid

中图分类号:

P733.23

卢再华，张志宏，顾建农. 多孔介质水平分层海底低频地震波的数值模拟[J]. 兵工学报, 2014, 35(12): 2065-2071.

LU Zai-hua, ZHANG Zhi-hong, GU Jian-nong. A Numerical Simulation of Seismic Wave Caused by Low Frequency Sound Source in Shallow Sea with Thick PorousSediment by Staggered-grid Finite Difference Method[J]. Acta Armamentarii, 2014, 35(12): 2065-2071.

参考文献

［1］卢再华, 张志宏, 顾建农. 舰船海底地震波及其在水雷引信中的应用[J]. 水雷战与舰船防护, 2004(4):25-28.
LU Zai-hua, ZHANG Zhi-hong, GU Jian-nong. The ship-induced seismic wave on the seafloor and it’s application in water mine fuze[J]. Mine Warfare and Ship Self-defence, 2004（4）:25-28.(in Chinese)
[2] 颜冰, 周伟, 龚沈光.浅海地震波传播的简正波模型[J].武汉理工大学学报, 2006, 30(5):805-807.
YAN Bing, ZHOU Wei, GONG Shen-guang. A normal mode model for ocean seismo-acoustics in shallow water[J]. Journal of Wuhan University of Technology, 2006, 30(5):805-807.(in Chinese)
[3] 卢再华, 张志宏, 顾建农. 基于波数积分的点声源海底地震波计算方法研究[J]. 武汉理工大学学报, 2011, 35(1):118-121.
LU Zai-hua, ZHANG Zhi-hong, GU Jian-nong. An algorithm for seismic wave on seafloor caused by low frequency point sound source based on wave-number integration technique[J]. Journal of Wuhan University of Technology, 2011, 35(1):118-121.(in Chinese)
[4] 张海刚, 朴胜春, 杨士莪. 水中甚低频声源激发海底地震波的传播[J]. 哈尔滨工程大学学报, 2010, 31(7):879-887.
ZHANG Hai-gang, PIAO Sheng-chun, YANG Shi-e. Propagation of seismic waves caused by underwater infrasound[J]. Journal of Harbin Engineer University, 2010, 31(7):879-887.(in Chinese)
[5] 卢博, 李赶先. 用声学三参数判别海底沉积物性质[J]. 声学技术, 2007, 26(1):6-14.
LU Bo, LI Gan-xian. Discrimination of seafloor sediment properties from sound velocity waveform and amplitude[J]. Technical Acoustics, 2007, 26(1):6-14.(in Chinese)
[6] Dai N, Vafidis A, Kanasewich E R. Wave propagation in heterogeneous, porous media: a velocity-stress, finite- difference method[J]. Geophysics, 1995, 60(2):327-340.
[7] Zeng Y Q, He J Q, Liu Q H. The application of the perfectly matched layer in numerical modeling of wave propagation in poroelastic media[J]. Geophysics, 2001, 66(4): 1258-1266.
[8] 董良国, 马在田, 曹景忠. 一阶弹性波方程交错网格高阶差分解法[J]. 地球物理学报, 2000，43(3):411-419.
DONG Liang-guo, MA Zai-tian, CAO Jing-zhong. A staggered-grid high-order difference method of first-order elastic equation[J]. Chinese Journal of Geophysics, 2000，43(3):411-419.(in Chinese)
[9] Collino F, Sogka T. Application of the perfectly matched absorbing layer model to the linear elasto-dynamic problem in anisotropic hetero-geneous media[J]. Geophysics, 2001, 66(1):294-307.
[10] Bouzidi Y. The acoustic reflectivity and transmissivity of liquid saturated Porous media:experimental tests of the theoretical concepts[D]. Edmonton:University of Alberta, 2003.
[11] Biot M A. Theory of propagation of elastic waves in a fluid-saturated porous solid(Ⅰ): low-frequency range［J］. J Acoust Soc Am, 1956,28:168-178.
[12] Jensen F B, Kuperman W A, Porter M B. Computational ocean acoustics[M]. New York:AIP Press, 1993.
[13] 李整林, 王耀俊, 马力. 海底沉积物参数对浅海中低频声传播的影响[J]. 声学学报, 2000, 25(3):242-247.
LI Zheng-lin, WANG Yao-jun, MA Li. Effects of sediment parameters on the low frequency acoustic wave propagation in shallow water[J]. Acta Acustica, 2000, 25(3):242-247.(in Chinese)

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多孔介质水平分层海底低频地震波的数值模拟

A Numerical Simulation of Seismic Wave Caused by Low Frequency Sound Source in Shallow Sea with Thick PorousSediment by Staggered-grid Finite Difference Method

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