Abstract —The response of seismic noise in the minute range of periods to the strong magnetic storms is studied. The noise is analyzed from the records by IRIS broadband seismic stations located in the different regions of the world. The minute variations in the X -, Y -, Z -components of the magnetic field at different observatories were obtained through the INTERMAGNET world data system. Seismic pulses that emerged at rapid variations in the rate of change of the magnetic field components dX , dY , dZ are detected. The pulses have the amplitudes of ~2 μm and duration of a few min. The high variability in the ratio of the amplitude of seismic pulses to the magnitude of changes in dHx , dHy , dHz indicates a nonlinear process. The amplitudes of seismic pulses are approximately identical at the stations located in the seismically active or quiet regions. The properties of the pulses also do not depend of weather conditions. The pulses are revealed in the records by all seismic stations located in the continents. In the records from the identical stations located on the volcanic islands in the deep part of the Pacific, such pulses are not detected. It is hypothesized that abrupt changes in the electromagnetic field during a storm act as a trigger for the release of energy accumulated in the Earth.

中文翻译：

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磁暴对低频地震噪声的影响

摘要——研究了微小周期范围内的地震噪声对强磁暴的响应。噪声是根据位于世界不同地区的 IRIS 宽带地震台站的记录进行分析的。通过 INTERMAGNET 世界数据系统获得了不同天文台磁场 X、Y、Z 分量的微小变化。检测到在磁场分量 dX 、dY 、dZ 的变化率快速变化时出现的地震脉冲。脉冲的幅度约为 2 μm，持续时间为几分钟。地震脉冲幅度与 dHx 、dHy 、dHz 变化幅度之比的高度可变性表明是非线性过程。在位于地震活跃区或安静区的台站，地震脉冲的振幅大致相同。脉冲的特性也不取决于天气条件。位于大陆的所有地震台站的记录中都显示了这些脉冲。在位于太平洋深处火山岛上的相同台站的记录中，没有检测到这种脉冲。据推测，风暴期间电磁场的突然变化会触发释放地球中积累的能量。检测不到此类脉冲。据推测，风暴期间电磁场的突然变化会触发释放地球中积累的能量。检测不到此类脉冲。据推测，风暴期间电磁场的突然变化会触发释放地球中积累的能量。