›› 2014, Vol. 23 ›› Issue (10): 109401-109401.doi: 10.1088/1674-1056/23/10/109401

• GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS • 上一篇    下一篇

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

张振霞a, 王辰宇b, 申旭辉c, 李新乔d, 吴书贵a   

  1. a National Earthquake Infrastructure Service, China Earthquake Administration, Beijing 100045, China;
    b School of Physics, Peking University, Beijing 100871, 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
  • 收稿日期:2014-01-21 修回日期:2014-04-14 出版日期:2014-10-15 发布日期:2014-10-15
  • 基金资助:
    Project supported by the Spark Plan for Earthquake Science and Technology of China Earthquake Administration (Grant No. XH12066), the National Natural Science Foundation of China (Grant No. 11103023), and the Director Foundation of National Earthquake Infrastructure Service (Grant No. NEIS201402).

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

Zhang Zhen-Xia (张振霞)a, Wang Chen-Yu (王辰宇)b, Shen Xu-Hui (申旭辉)c, Li Xin-Qiao (李新乔)d, Wu Shu-Gui (吴书贵)a   

  1. a National Earthquake Infrastructure Service, China Earthquake Administration, Beijing 100045, China;
    b School of Physics, Peking University, Beijing 100871, 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
  • Received:2014-01-21 Revised:2014-04-14 Online:2014-10-15 Published:2014-10-15
  • Contact: Zhang Zhen-Xia E-mail:zxzhang@neis.gov.cn
  • About author:94.20.wj; 94.30.Tz; 93.85.Rt
  • Supported by:
    Project supported by the Spark Plan for Earthquake Science and Technology of China Earthquake Administration (Grant No. XH12066), the National Natural Science Foundation of China (Grant No. 11103023), and the Director Foundation of National Earthquake Infrastructure Service (Grant No. NEIS201402).

摘要: 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 interactions 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 precipitation 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.

关键词: particle burst, VLF electric disturbance, wave-particle interaction

Abstract: 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 interactions 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 precipitation 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.

Key words: particle burst, VLF electric disturbance, wave-particle interaction

中图分类号:  (Wave/particle interactions)

  • 94.20.wj
94.30.Tz (Electromagnetic wave propagation) 93.85.Rt (Seismic methods)