【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。更多还原

【Abstract】 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.更多还原