Study of typical space wave-particle coupling events possibly related with seismic activity

Based on the DEMETER satellite, we found two space wave-particle coupling events during February 2010 that took place in the range of the McIlwain parameter L （1.27-- 1.37）. There are strong spatial and temporal correlation between the particle bursts （PBs） and the electromagnetic disturbances of th...

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Published inChinese physics B Vol. 23; no. 10; pp. 641 - 649
Main Author 张振霞 王辰宇 申旭辉 李新乔 吴书贵
Format Journal Article
LanguageEnglish
Published 01.10.2014
Subjects
Bursts
Disturbances
Electromagnetic waves
Joining
Mathematical analysis
Onboard
Precipitation
VLF
Wave-particle interactions
事件
低频电磁波
地震活动
电磁干扰
空间波
耦合
频率范围
颗粒物质
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ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/23/10/109401

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Summary:Based on the DEMETER satellite, we found two space wave-particle coupling events during February 2010 that took place in the range of the McIlwain parameter L （1.27-- 1.37）. There are strong spatial and temporal correlation between the particle bursts （PBs） and the electromagnetic disturbances of the coupling events. The two PBs show different energy spectrum characteristics, while the corresponding electromagnetic disturbances concentrated on different frequency ranges. In agreement with the prediction of the theory of wave-particle interaction, we conclude that the two wave-particle inter- actions can be probably explained as follows： one is electron-dominant precipitation with energy of 0.09 MeV,-~0.2 MeV induced by a VLF electromagnetic wave with the frequencies of 14 kHz,-20 kHz, and another is proton-dominant precip- itation with energies of 0.65 MeV--2.85 MeV induced by a VLF electromagnetic wave with the frequency of ≤ 100 Hz. For the first time, these particle bursts＇ origins, from electrons or protons detected by the Instrument for the Detection of Particles （IDP） on board, are inferred by theoretical calculation, although the instrument has no ability to identify the particle species.
Bibliography:particle burst, VLF electric disturbance, wave-particle interaction
Zhang Zhen-Xia, Wang Chen-Yu, Shen Xu-Hui, Li Xin-Qiao, and Wu Shu-Gui（ a） National Earthquake Infrastructure Service, China Earthquake Administration, Beijing 100045, China b） School of Physics, Peking University, Beljing 10087 I, China C） Institute of Earthquake Science, China Earthquake Administration, Beijing 100045, China d）institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
11-5639/O4
Based on the DEMETER satellite, we found two space wave-particle coupling events during February 2010 that took place in the range of the McIlwain parameter L （1.27-- 1.37）. There are strong spatial and temporal correlation between the particle bursts （PBs） and the electromagnetic disturbances of the coupling events. The two PBs show different energy spectrum characteristics, while the corresponding electromagnetic disturbances concentrated on different frequency ranges. In agreement with the prediction of the theory of wave-particle interaction, we conclude that the two wave-particle inter- actions can be probably explained as follows： one is electron-dominant precipitation with energy of 0.09 MeV,-~0.2 MeV induced by a VLF electromagnetic wave with the frequencies of 14 kHz,-20 kHz, and another is proton-dominant precip- itation with energies of 0.65 MeV--2.85 MeV induced by a VLF electromagnetic wave with the frequency of ≤ 100 Hz. For the first time, these particle bursts＇ origins, from electrons or protons detected by the Instrument for the Detection of Particles （IDP） on board, are inferred by theoretical calculation, although the instrument has no ability to identify the particle species.
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content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/23/10/109401