Volume 42 Issue 2
Mar.  2022
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LI Bo, LI Lei, GOU Xiaochen, ZHOU Bin. Magnetic Signatures and Identification of Equatorial Plasma Bubbles (in Chinese). Chinese Journal of Space Science, 2022, 42(2): 232-239. DOI: 10.11728/cjss2022.02.210323033
Citation: LI Bo, LI Lei, GOU Xiaochen, ZHOU Bin. Magnetic Signatures and Identification of Equatorial Plasma Bubbles (in Chinese). Chinese Journal of Space Science, 2022, 42(2): 232-239. DOI: 10.11728/cjss2022.02.210323033

Magnetic Signatures and Identification of Equatorial Plasma Bubbles

doi: 10.11728/cjss2022.02.210323033
  • Received Date: 2021-03-23
  • Accepted Date: 2021-05-28
  • Rev Recd Date: 2021-12-31
  • Available Online: 2022-04-11
  • Equatorial Plasma Bubbles (EPBs) are density depleted structures in the equatorial ionosphere, accompanied by the enhanced magnetic field strength, and fluctuations in the directions transverse to the main field, which have Alfvenic wave signatures. Utilizing the scalar, vector magnetic field, and plasma data from the Swarm mission, the magnetic signatures related with EPB are investigated. It is found that the changes both in the magnetic field strength and the component parallel with the main field are anti-correlated with the density changes inside EPBs, suggesting both the scalar and vector magnetic field data could be used to identify EPSs. Comparing the results of EPB identification using Swarm satellite scalar and vector magnetic field data products respectively, it is confirmed using the scalar data can increase the chance to identify EPBs, especially to find EPBs with relatively lower field fluctuations, since the noise level of the Swarm scalar magnetometer is about one order of magnitude lower than that of the vector magnetometer.

     

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