Volume 43 Issue 2
Mar.  2023
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Article Navigation >  Chinese Journal of Space Science  > 2023  >  43(2): 251-259 Open Access
WANG Yuhan, REN Zhipeng, YU Tingting, LIU Yunbo, WEI Yong. Morphological Study on Magnetically Quiet-day Ionospheric Potential Distribution (in Chinese). Chinese Journal of Space Science, 2023, 43(2): 251-259 doi: 10.11728/cjss2023.02.220328032
Citation: WANG Yuhan, REN Zhipeng, YU Tingting, LIU Yunbo, WEI Yong. Morphological Study on Magnetically Quiet-day Ionospheric Potential Distribution (in Chinese). Chinese Journal of Space Science, 2023, 43(2): 251-259 doi: 10.11728/cjss2023.02.220328032
shu

Morphological Study on Magnetically Quiet-day Ionospheric Potential Distribution

doi: 10.11728/cjss2023.02.220328032 cstr: 32142.14.cjss2023.02.220328032
  • 1.

    Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029

  • 2.

    Beijing National Observatory of Space Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029

  • 3.

    College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049

  • Received Date: 2022-03-25
  • Accepted Date: 2022-05-16
  • Rev Recd Date: 2022-11-09
    • Available Online: 2023-04-01
    Abstract
  • Under the International Geomagnetic Reference Field (IGRF), Global Coupled Ionosphere-Thermosphere-Electrodynamics Model (GCITEM) simulations are used to investigated magnetically quiet-day ionospheric potential distribution at middle-low latitudes, which is dominated by ionospheric dynamo. We present the dependence of ionospheric potential on solar activity, season, UT, and lower atmospheric tides. The results are as follows: the global distribution of ionospheric potential is similar under different conditions. There are two positive potential peaks (source) and one negative charge peak (sink) in one hemisphere. Potential distributions have obvious seasonal and UT variations. The differences of potential peak between source and sink have an increase with the increase of solar activity, however, the differences tend to saturate after a high solar activity level. The diurnal migration tides mainly affect the ionospheric potential at equatorial regions, resulting in the increase of potential peak differences. In comparison, the semi-diurnal migration tides mainly affect the ionospheric potential at middle latitudes, resulting in the decrease of potential peak differences.

     

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