Turn off MathJax
Article Contents
Article Navigation >  Chinese Journal of Space Science  > 2025  > Corrected proofOpen Access
HUANG Linfeng, WANG Jinsong, SONG Shanhai, YANG Shijin, LIAO Yao. EIA Latitude Offset Phenomenon in Winter and Its Impact Mechanism around 120-size:15pt'>°E Longitude during 1998－2020 (in Chinese). Chinese Journal of Space Science, 2025, 45(6): 1451-1459 doi: 10.11728/cjss2025.05.2024-0136
Citation: HUANG Linfeng, WANG Jinsong, SONG Shanhai, YANG Shijin, LIAO Yao. EIA Latitude Offset Phenomenon in Winter and Its Impact Mechanism around 120-size:15pt">°E Longitude during 1998－2020 (in Chinese). Chinese Journal of Space Science, 2025, 45(6): 1451-1459 doi: 10.11728/cjss2025.05.2024-0136
shu

EIA Latitude Offset Phenomenon in Winter and Its Impact Mechanism around 120°E Longitude during 1998－2020

doi: 10.11728/cjss2025.05.2024-0136 cstr: 32142.14.cjss.2024-0136
  • 1.

    Guizhou Ecological and Agricultural Meteorology Center, Guiyang 550002

  • 2.

    National Satellite Meteorological Center, Beijing 100081

  • 3.

    Guizhou Data and Application Center of High-Resolution Earth Observation System, Guiyang 550002

  • Received Date: 2024-10-24
  • Rev Recd Date: 2024-12-30
    • Available Online: 2024-12-31
    Abstract
  • Based on the Total Electron Content (TEC), F2 layer critical frequency (f0F2), and peak height (hmF2) data provided by the institute of IZMIRAN of the Russian Academy of Sciences from 1998 to 2020, this study analyzes the morphological features of the hemispheric asymmetry and latitude offset phenomenon of the Equatorial Ionization Anomaly (EIA) over 120°E during geomagnetically quiet periods, especially during low solar activity, and explores the possible influencing mechanisms. The results showed that the hemispherical asymmetry features of EIA structure that vary with solar activity are significantly different during the summer and winter solstice. The asymmetry exhibits a significant correlation with the solar activity during winter solstice. However, there is a weak negative correlation during the summer solstice. The latitude position of EIA structure moves southward in winter months and the latitude deviation of southern anomaly crest is more significant, especially during the low solar activity. During the winter solstice over 120°E, trans-equatorial neutral winds are the main factor affecting the hemispheric asymmetry of EIA peak intensities. Excluding the influences of geomagnetic activity and magnetic declination, the primary factor for the latitude shifts of the EIA double-peak structure in winter may be related to the geographic control effect of the plasma density background field around the subsolar point. At where, photo-ionization can produce more electrons, and the effect may plays an important role in Southward offset phenomenon of EIA structure in winter around 120°E longitude. Meanwhile, the impact of the geographic control influence still requires further research and validation through theoretical models and simulation studies. These findings provide new insights into the complex behaviors of the EIA under varying solar conditions, highlighting the significant role of subsolar point positioning in modulating ionospheric EIA structures.

     

    • FullText(HTML)
  • loading
    • References(30)
  • [1]
    FORBES J M, PALO S E, ZHANG X L. Variability of the ionosphere[J]. Journal of Atmospheric and Solar-Terrestrial Physics, 2000, 62(8): 685-693 doi: 10.1016/S1364-6826(00)00029-8
    [2]
    FEJER B G. Low latitude ionospheric electrodynamics[J]. Space Science Reviews, 2011, 158(1): 145-166 doi: 10.1007/s11214-010-9690-7
    [3]
    APPLETON E V. Two anomalies in the ionosphere[J]. Nature, 1946, 157(3995): 691
    [4]
    MOFFETT R J, HANSON W B. Effect of ionization transport on the equatorial F-region[J]. Nature, 1965, 206(4985): 705-706 doi: 10.1038/206705a0
    [5]
    BALAN N, IYER K N. Equatorial anomaly in ionospheric electron content and its relation to dynamo currents[J]. Journal of Geophysical Research: Space Physics, 1983, 88(A12): 10259-10262 doi: 10.1029/JA088iA12p10259
    [6]
    Lin C H, Liu J Y, Fang T W, et al. Motions of the equatorial ionization anomaly crests imaged by FORMOSAT-3/COSMIC[J]. Geophysical Research Letters, 2007, 34(19): L19101
    [7]
    LI Bo, CUI Ruifei, WENG Libin. Seasonal variations of global ionospheric NmF2 and hmF2[J]. Chinese Journal of Space Science, 2024, 44(1): 60-70 (李波, 崔瑞飞, 翁利斌. 全球电离层峰值参数的季节变化[J]. 空间科学学报, 2024, 44(1): 60-70 doi: 10.11728/cjss2024.01.2023-0130

    LI Bo, CUI Ruifei, WENG Libin. Seasonal variations of global ionospheric NmF2 and hmF2[J]. Chinese Journal of Space Science, 2024, 44(1): 60-70 doi: 10.11728/cjss2024.01.2023-0130
    [8]
    LOMOTEY S O, DE SOUZA J R, WRASSE C M, et al. Variability of the equatorial ionization anomaly over the South American sector: effects of electric field and effective meridional wind[J]. Journal of Atmospheric and Solar-Terrestrial Physics, 2024, 260: 106240. doi: 10.1016/j.jastp.2024.106240
    [9]
    YU Tao, WAN Weixing, LIU Libo, et al. Using IGS data to analysis the global TEC annual and semiannual variation[J]. Chinese Journal of Geophysics, 2006, 49(4): 943-949 (余涛, 万卫星, 刘立波, 等. 利用IGS数据分析全球TEC的周年和半年变化特性[J]. 地球物理学报, 2006, 49(4): 943-949 doi: 10.3321/j.issn:0001-5733.2006.04.003

    YU Tao, WAN Weixing, LIU Libo, et al. Using IGS data to analysis the global TEC annual and semiannual variation[J]. Chinese Journal of Geophysics, 2006, 49(4): 943-949 doi: 10.3321/j.issn:0001-5733.2006.04.003
    [10]
    LIU L B, WAN W X, CHEN Y D, et al. Solar activity effects of the ionosphere: a brief review[J]. Chinese Science Bulletin, 2011, 56(12): 1202-1211 doi: 10.1007/s11434-010-4226-9
    [11]
    HUANG L F, HUANG J, WANG J S, et al. Analysis of the north–south asymmetry of the equatorial ionization anomaly around 110°E longitude[J]. Journal of Atmospheric and Solar-Terrestrial Physics, 2013, 102: 354-361 doi: 10.1016/j.jastp.2013.06.010
    [12]
    LI Yongtao, LI Jianwen, DAI Taogao, et al. Influence of solar activity on ionospheric TEC change[J]. Chinese Journal of Space Science, 2018, 38(6): 847-854 (李涌涛, 李建文, 代桃高, 等. 太阳活动对电离层TEC变化影响分析[J]. 空间科学学报, 2018, 38(6): 847-854 doi: 10.11728/cjss2018.06.847

    LI Yongtao, LI Jianwen, DAI Taogao, et al. Influence of solar activity on ionospheric TEC change[J]. Chinese Journal of Space Science, 2018, 38(6): 847-854 doi: 10.11728/cjss2018.06.847
    [13]
    MEI Xuefei, LUO Weihua, CAI Hongtao, et al. Characteristic of the equatorial ionization anomaly strength and hemispheric asymmetry based on IGS network during 2001-2008[J]. Chinese Journal of Geophysics, 2019, 62(9): 3235-3246 (梅雪飞, 罗伟华, 蔡红涛, 等. 基于IGS台网观测的2001-2008年赤道电离异常的强度和半球不对称特征[J]. 地球物理学报, 2019, 62(9): 3235-3246

    MEI Xuefei, LUO Weihua, CAI Hongtao, et al. Characteristic of the equatorial ionization anomaly strength and hemispheric asymmetry based on IGS network during 2001－2008[J]. Chinese Journal of Geophysics, 2019, 62(9): 3235-3246
    [14]
    HUANG L F, WANG J S, JIANG Y, et al. A preliminary study of the single crest phenomenon in Total Electron Content (TEC) in the equatorial anomaly region around 120°E longitude between 1999 and 2012[J]. Advances in Space Research, 2014, 54(11): 2200-2207 doi: 10.1016/j.asr.2014.08.021
    [15]
    TIAN Yaoyu, HAO Yongqiang, ZHANG Donghe, et al. Single crest phenomenon in the equatorial ionospheric anomaly region and its longitudinal distribution caused by nonmigrating tides[J]. Chinese Journal of Geophysics, 2019, 62(11): 4067-4081 (田耀宇, 郝永强, 张东和, 等. 非迁移潮作用下的电离层赤道异常区单峰现象及其经度分布[J]. 地球物理学报, 2019, 62(11): 4067-4081

    TIAN Yaoyu, HAO Yongqiang, ZHANG Donghe, et al. Single crest phenomenon in the equatorial ionospheric anomaly region and its longitudinal distribution caused by nonmigrating tides[J]. Chinese Journal of Geophysics, 2019, 62(11): 4067-4081
    [16]
    YANG Y, XIONG C, ZHANG S, et al. The double peak superposition on the equatorial ionization anomaly crests during the 23 April 2023 storm[J]. Geophysical Research Letters, 51, e2024GL108850. DOI: 10.1029 / 2024GL108850
    [17]
    MANNUCCI A J, WILSON B D, YUAN D N, et al. A global mapping technique for GPS-derived ionospheric total electron content measurements[J]. Radio Science, 1998, 33(3): 565-582 doi: 10.1029/97RS02707
    [18]
    GULYAEVA T L, ARIKAN F, STANISLAWSKA I. Inter-hemispheric imaging of the ionosphere with the upgraded IRI-Plas model during the space weather storms[J]. Earth, Planets and Space, 2011, 63(8): 929-939 doi: 10.5047/eps.2011.04.007
    [19]
    LIU L B, WAN W X, NING B Q, et al. Solar activity variations of the ionospheric peak electron density[J]. Journal of Geophysical Research: Space Physics, 2006, 111(A8): A08304
    [20]
    BALAN N, BAILEY G J. Equatorial plasma fountain and its effects: possibility of an additional layer[J]. Journal of Geophysical Research: Space Physics, 1995, 100(A11): 21421-21432 doi: 10.1029/95JA01555
    [21]
    RISHBETH H. The equatorial F-layer: progress and puzzles[J]. Annales Geophysicae, 2000, 18(7): 730-739 doi: 10.1007/s00585-000-0730-6
    [22]
    YEH K C, FRANKE S J, ANDREEVA E S, et al. An investigation of motions of the equatorial anomaly crest[J]. Geophysical Research Letters, 2001, 28(24): 4517-4520 doi: 10.1029/2001GL013897
    [23]
    XIONG C, LÜHR H, MA S Y. The magnitude and inter-hemispheric asymmetry of equatorial ionization anomaly-based on CHAMP and GRACE observations[J]. Journal of Atmospheric and Solar-Terrestrial Physics, 2013, 105-106: 160-169
    [24]
    TEPLEY C A, ROBLES E, GARCÍA R, et al. Directional trends in thermospheric neutral winds observed at Arecibo during the past three solar cycles[J]. Journal of Geophysical Research: Space Physics, 2011, 116(A2): A00H06
    [25]
    CAI X G, WANG W B, EASTES R W, et al. Equatorial ionization anomaly discontinuity observed by GOLD, COSMIC-2, and ground-based GPS receivers’ network[J]. Geophysical Research Letters, 2023, 50(10): e2023GL102994. doi: 10.1029/2023GL102994
    [26]
    MENG X, VERKHOGLYADOVA O P, CHAPMAN S C, et al. Statistical characteristics of total electron content intensifications on global ionospheric maps[J]. Space Weather, 2024, 22(1): e2023SW003695 doi: 10.1029/2023SW003695
    [27]
    SMITHTRO C G, SOJKA J J. Behavior of the ionosphere and thermosphere subject to extreme solar cycle conditions[J]. Journal of Geophysical Research: Space Physics, 2005, 110(A8): A08306
    [28]
    DANG T, LUAN X L, LEI J H, et al. A numerical study of the interhemispheric asymmetry of the equatorial ionization anomaly in solstice at solar minimum[J]. Journal of Geophysical Research: Space Physics, 2016, 121(9): 9099-9110 doi: 10.1002/2016JA023012
    [29]
    MO X H, ZHANG D H, GONCHARENKO L, et al. Meridional movement of northern and southern equatorial ionization anomaly crests in the East-Asian sector during 2002–2003 SSW[J]. Science China Earth Sciences, 2017, 60(4): 776-785 doi: 10.1007/s11430-016-0096-y
    [30]
    ZHOU Weiqi, YU You, WAN Weixing, et al. Tidal variations of the ionospheric f0F2 in mid-latitude ionosphere[J]. Chinese Journal of Geophysics, 2018, 61(1): 30-42 (周惟琦, 余优, 万卫星, 等. 中纬度电离层f0F2潮汐的变化特性[J]. 地球物理学报, 2018, 61(1): 30-42

    ZHOU Weiqi, YU You, WAN Weixing, et al. Tidal variations of the ionospheric f0F2 in mid-latitude ionosphere[J]. Chinese Journal of Geophysics, 2018, 61(1): 30-42
    • Relative Articles
    • Supplements(0)
    • Cited By
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Figures(7)  / Tables(1)

    Get Citation
    PDF
    XML

    Article Metrics

    Article Views(806) PDF Downloads(14) Cited by()
    Proportional views
    Related

    Journal Introduction

    ISSN 0254-6124（网络）       CN 11-1783/V

    Copyright © Editorial Office of Chinese Journal of Space Science.  京ICP备08100722号

    Supported by: Beijing Renhe Information Technology Co., Ltd.  

    x Close Forever Close

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return