论文标题
地球大气旋转对声学波谱的影响
Influence of the Earth's atmosphere rotation on the spectrum of acoustic-gravity waves
论文作者
论文摘要
Cheremnykh等人最近的一篇论文中展示了它。 （太空研究的进步，2022年）考虑到地球大气的旋转导致在声学波的诊断图上出现具有连续频谱的新逃生区域。该区域位于重力波的下限下方，在所有波长下，$ω$是大气旋转的角频率。对于大气的高纬度区域获得了这一结果，其中我们可以将自己限制在地球旋转频率的垂直成分中。在拟议的论文中，我们表明，考虑到大气旋转频率的两个组成部分$ \oferrightArrowΩ$ - 水平，$ω\cosφ$，垂直，$ω\sinφ$，其中$ q \sinφ$，其中$φ$是泥土的纬度，在声波传播中占主导地位的效果，是垂直的垂直组成部分。结果表明，水平成分导致对声学和重力波区域边界的诊断图进行了微不足道的修改，这可以忽略。还表明，频率的最强垂直成分会影响重力波的下限，这取决于观测位点纬度的所有波长，等于$2Ω\sinφ$。
It was shown in a recent paper by Cheremnykh et al. (Advances in Space Research, 2022) that taking into account the rotation of the Earth's atmosphere leads to the appearance of a new region of evanescent waves with a continuous frequency spectrum on the diagnostic diagram of acoustic-gravity waves. The region is located below the lower limit of gravity waves, which is equal $2Ω$ at all wavelengths, where $Ω$ is the angular frequency of the atmosphere rotation. This result was obtained for high-latitude regions of the atmosphere, in which we can limit ourselves to considering only the vertical component of the Earth's rotation frequency. In the proposed paper we show that taking into account both components of the vector of the atmosphere rotation frequency $\overrightarrowΩ$ - horizontal, $Ω\cosφ$ , and vertical, $Ω\sinφ$, where $φ$ is the Earth`s latitude, the dominant role in the acoustic-gravity waves propagation is played by the vertical component. It is shown that the horizontal component leads to an insignificant modification on the diagnostic diagram of the boundaries of the areas of acoustic and gravity waves, which can be neglected. Also shown that the strongest vertical component of the frequency affects the lower limit of gravity waves, which depends at all wavelengths on the latitude of the observation site and is equal to $2Ω\sinφ$.
