The radiation of atmospheric microbaroms by ocean waves
The radiation of atmospheric microbaroms by ocean waves
复制标题
海浪对大气微气压的辐射
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
K. Gilbert
中科院分区：
文献类型：
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作者：
R. Waxler;K. Gilbert
本文采用空气-海水双流体模型，研究了次声在海浪作用下的辐射特性。由空气/水界面运动引起的声辐射是一种非线性效应。计算了二阶非线性对声辐射的贡献，并将接收到的微气压信号的统计特性与海浪系统的统计特性联系起来。比较了大气和海洋辐射的物理机制和源强。解释了观测到的大气与海洋微气压峰值压力水平之比（约为1比1000）。
A two-fluid model, air over seawater, is used to investigate the radiation of infrasound by ocean waves. The acoustic radiation which results from the motion of the air/water interface is known to be a nonlinear effect. The second-order nonlinear contribution to the acoustic radiation is computed and the statistical properties of the received microbarom signals are related to the statistical properties of the ocean wave system. The physical mechanisms and source strengths for radiation into the atmosphere and ocean are compared. The observed ratio of atmospheric to oceanic microbarom peak pressure levels (approximately 1 to 1000) is explained.