Statistical study of ELF/VLF emissions recorded by a low‐altitude satellite during seismic events
Statistical study of ELF/VLF emissions recorded by a low‐altitude satellite during seismic events
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DOI：
10.1029/94ja02072
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发表时间：
1994-12
影响因子：
--
通讯作者：
M. Parrot
中科院分区：
文献类型：
--
作者：
M. Parrot
本文介绍了与地震事件有关的低空卫星数据的统计研究。AUREOL 3卫星的数据被认为是在24小时窗口的325次地震与Ms > 5。在ELF/VLF范围内的不同频率滤波器的输出处的放大器，连接到电或磁组件，被存储在一个文件中。该文件由三个参数组成：Δt，地震时间与卫星数据时间之差; ΔLong，地震经度与卫星经度之差; ΔInv.Lat，地震不变纬度与卫星不变纬度之差。当所有数据随时间平均时，振幅在ΔLong < 10°的区间内最大，与ΔInv.Lat.无关。这表明，由于传播，与地震过程有关的波可以沿沿着穿过地震震中的磁子午线被观测到。但是，由于AUREOL 3数据未连续记录，因此提供的事件数量有限，因此无法进行完整的统计研究。
This paper presents a statistical study of low-altitude satellite data linked to seismic events. Data of the satellite AUREOL 3 are considered during 24-hour windows around the time of 325 earthquakes with Ms > 5. Amplitudes at the output of different frequency filters in the ELF/VLF range, connected to electric or magnetic components, were stored in a file. This file is organized as functions of three parameters: Δt, the difference between the time of the earthquake and the time of the satellite data; ΔLong, the difference between the longitude of the earthquake and the longitude of the satellite; and ΔInv.Lat, the difference between the invariant latitude of the earthquake and the invariant latitude of the satellite. When all data are averaged over time, the amplitude is maximum in the interval ΔLong < 10° regardless of ΔInv.Lat. This indicates that, due to propagation, waves related to seismic processes can be observed all along the magnetic meridian passing over the epicenter of an earthquake. However, as the AUREOL 3 data were not continuously recorded, thus providing a limited number of events, it was impossible to carry out a complete statistical study.