楔形弹性海底声矢量场分布规律研究
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摘要
提出了基于弹性抛物方程的声矢量场计算方法,计算了楔形弹性海底的海洋环境中甚低频声矢量场和弹性海底地震波场分布,研究了声源深度和声源频率对声场分布的影响,仿真结果表明声波在具有弹性楔形海底的海洋环境中传播时存在能量泄漏现象,利用简正波理论解释了能量泄漏位置可由水深—波长比确定。
The method based on elastic parabolic equation method for calculating the sound vector field has been studied.The vector field of infra-sound in oceanic environment with elastic wedge bottom and seismic wave filed with elastic bottom have been calculated.The effects on sound field distribution for different frequency and depth of sound source have been researched,result shows that there is the energy of sound wave leaked into the bottom,the place where leakage occurred can be determined by the ratio of the ocean depth to the wavelength,as compared with normal mode theory.
The method based on elastic parabolic equation method for calculating the sound vector field has been studied.The vector field of infra-sound in oceanic environment with elastic wedge bottom and seismic wave filed with elastic bottom have been calculated.The effects on sound field distribution for different frequency and depth of sound source have been researched,result shows that there is the energy of sound wave leaked into the bottom,the place where leakage occurred can be determined by the ratio of the ocean depth to the wavelength,as compared with normal mode theory.
引文
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2周士弘.分层介质波导中的声矢量场传播.哈尔滨工程大学学报,2004;25(1):38-42
3黄益旺等.楔形海域声矢量场分析.哈尔滨工程大学学报,2008; 29(4):390 394
4马树青等.声矢量场的抛物方程计算方法研究.哈尔滨工程大学学报,2009;30(7):775-780
5陈云飞等.航行舰船地震波及其在水中目标探测中的应用.舰船科学与技术,2005;27(3):62-66
6卢再华等.浅海低频点声源作用下海底地震波的数值模拟.武汉理工大学学报,2007;32(4):607 610
7卢再华等.舰船海底地震波形成机理的理论分析.应用力学学报,2007;24(1):54 57
8李响,颜冰.舰船地震波场分析.噪声与振动控制,2007;27(4): 120-122
9 Tappert F D.The parabolic approximation method in wave propagation and underwater acoustic.Springer-Verlag, New York,1977:224-287
10 Collins M D.A higher-order parabolic equation for wave propagation in an ocean overlying an elastic bottom.J. Acoust.Soc.Am.,1989;86:1459-1464
11 Outing D A,Siegmann W L,Collins M D,Westwood E K. ??Generalization of the rotated parabolic equation to variable slopes.J.Acoustic.Soc.Am.,2006;120:3534-3538
12 Collis J M,Siegmann W L,Jensen F B,Zampolli M,Kusel E T,Collins M D.Parabolic equation solution of seismoacoustics problems involving variations in bathymetry and sediment thickness.J.Acoust.Soc.Am.,2008;123:51- 55
13何祚镛,赵玉芳.声学理论基础.国防工业出版社,1981
14 Wayne Jerzak.Parabolic equation for layered elastic media. Doctoral dissertation,Rensselaer Polytechnic Institute, Troy,NY,2001
15杨士莪.水声传播原理.哈尔滨:哈尔滨工程大学出版社,2009: 24-27
2周士弘.分层介质波导中的声矢量场传播.哈尔滨工程大学学报,2004;25(1):38-42
3黄益旺等.楔形海域声矢量场分析.哈尔滨工程大学学报,2008; 29(4):390 394
4马树青等.声矢量场的抛物方程计算方法研究.哈尔滨工程大学学报,2009;30(7):775-780
5陈云飞等.航行舰船地震波及其在水中目标探测中的应用.舰船科学与技术,2005;27(3):62-66
6卢再华等.浅海低频点声源作用下海底地震波的数值模拟.武汉理工大学学报,2007;32(4):607 610
7卢再华等.舰船海底地震波形成机理的理论分析.应用力学学报,2007;24(1):54 57
8李响,颜冰.舰船地震波场分析.噪声与振动控制,2007;27(4): 120-122
9 Tappert F D.The parabolic approximation method in wave propagation and underwater acoustic.Springer-Verlag, New York,1977:224-287
10 Collins M D.A higher-order parabolic equation for wave propagation in an ocean overlying an elastic bottom.J. Acoust.Soc.Am.,1989;86:1459-1464
11 Outing D A,Siegmann W L,Collins M D,Westwood E K. ??Generalization of the rotated parabolic equation to variable slopes.J.Acoustic.Soc.Am.,2006;120:3534-3538
12 Collis J M,Siegmann W L,Jensen F B,Zampolli M,Kusel E T,Collins M D.Parabolic equation solution of seismoacoustics problems involving variations in bathymetry and sediment thickness.J.Acoust.Soc.Am.,2008;123:51- 55
13何祚镛,赵玉芳.声学理论基础.国防工业出版社,1981
14 Wayne Jerzak.Parabolic equation for layered elastic media. Doctoral dissertation,Rensselaer Polytechnic Institute, Troy,NY,2001
15杨士莪.水声传播原理.哈尔滨:哈尔滨工程大学出版社,2009: 24-27
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