Abstract

The results of data analysis of instrumental observations of microbaric variations in the atmospheric pressure carried out at the Mikhnevo Geophysical Observatory and at the Center for Geophysical Monitoring in Moscow of Sadovsky Institute of Geosphere Dynamics of Russian Academy of Sciences (IDG RAS) during periods of strong geomagnetic disturbances are presented. It was shown from the example of 57 events that, during magnetic storms (index of geomagnetic activity K_р ≥ 5), increased microbaric variations with amplitudes from 2 to 20 Pa in the range of periods of 20–80 min and frequencies close to the Brunt–Väisälä frequency have been observed. It is shown that the spectrum of microbaric variations caused by magnetic storms contains several quasi-harmonic components. The maximum amplitudes of acoustic vibrations fall in the range from 2 to 20 Pa with the maximum amplitudes of the magnetic disturbance from 15 to 200 nT.

中文翻译：

---

磁暴期间近地表大气中的波扰动

摘要

在米赫涅沃地球物理天文台和俄罗斯科学院萨多夫斯基地球圈动力学研究所 (IDG RAS) 莫斯科地球物理监测中心进行的大气压力微压变化仪器观测数据分析结果。介绍了地磁扰动。它是从57个事件的例子中所示的是，在地磁活动的磁风暴（指数ķ _р≥ 5)，已观察到在 20-80 分钟范围内和频率接近 Brunt-Väisälä 频率范围内幅度从 2 到 20 Pa 的微气压变化增加。结果表明，磁暴引起的微气压变化谱包含几个准谐波分量。声振动的最大振幅在 2 到 20 Pa 的范围内，磁干扰的最大振幅从 15 到 200 nT。