摘要
本文用最大熵方法并结合付氏分析方法分析了黄海中部海区(36°N,124°E)内波调查资料。分析表明该海区存在很强的温度密度跃层。根据对海流资料的分析得出潮汐频率的波动是正压的。从消除了正压潮流后的余流中得到0.049Cph的波动,由温度资料得到频率为0.0514Cph的波动,且发现它基本是斜压的,即为低频内波。该低频波动主要为最低模态朝西方向传播的惯性内波。本文阐明了惯性波的产生来自局地风应力的作用。
The internal wave observation data in the central region (36° N, 124° E) of the Huanghai Sea were analized by using the maximum entropy spectral method and the Fourier analysis method. It was shown that there was a strong thermocline in this area. Using the current meter data the motion with tidal frequency was examined to be isotropic Oscillations with the inertial frequency (0. 049 cph) in the current meter data and oscillations with the frequency (0. 0514cph) in the temperature data were observed, which were proved to be baroclinic, i. e. low-frequency internal waves. These low-frequency internal waves were mainly inertial, whose first mode, propagating toward the west, was suggested to be generated by local wind stress.
基金
国家科学基金"中国海内波场特性研究"的部分成果
关键词
内波
低频
惯性波
最大熵谱
旋转谱
Huanghai Sea
incrtial waves
internal waves
maximum entropy spectral analysis
Fourier analysis
rotary spectra
