海浪产生磁场的能量分布计算
Computation of energy distribution of the magnetic field induced by ocean waves
-
摘要: 结合前人在海浪功率谱研究以及海浪产生磁场两方面的研究,求出了海浪-磁场系统的传递函数,计算了传递函数的峰值、对应的峰值频率,分析了这些指标随高度的变化.根据理论分析,给出了感应磁场总功率的表达式和峰值频率满足的方程,指出海浪感应磁场是一个窄带随机过程.最后选择几种典型的海浪谱,计算了它们感应的磁场功率谱以及总功率、功率谱峰值、峰值频率以及等效噪声带宽.Abstract: With the aid of previous research on ocean wave spectrum and the magnetic field induced by ocean waves,the power transfer function of ocean wave-magnetic field system is determined.The peak value of the transfer function and the corresponding frequency are determined and the changes of these two quantities as a function of height are analyzed.According to the theoretical analysis,the analytical expression of the total magnetic power is determined and the equation that the peak-power frequency satisfies is provided.It is pointed out that the induced magnetic field is a narrow-band process.Finally,the power spectral density,total power,the maximum of the PSD,maximum frequency and equivalent frequency of induced magnetic field are calculated for some typical wave spectra.
-
文圣常,余宙文.海浪理论与计算原理[M].北京:科学出版社,1985. WEAVER J T.Magnetic variations associated with ocean waves and swell [J].Journal of Geophysical Research,1965,70(8):1 921-1 929. -
点击查看大图
计量
- 文章访问数: 761
- HTML全文浏览量: 13
- PDF下载量: 1396
- 被引次数: 0
下载:
