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Open AccessArticle

Global Distribution of Persistence of Total Electron Content Anomaly

1
Hubei Subsurface Multi-scale Imaging Key Laboratory, Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan 430074, China
2
Graduate Institute of Space Science, National Central University, Taoyuan 32001, Taiwan
3
Center for Astronautical Physics and Engineering, National Central University, Taoyuan 32001, Taiwan
4
Center for Space and Remote Sensing Research, National Central University, Taoyuan 32001, Taiwan
*
Author to whom correspondence should be addressed.
Atmosphere 2019, 10(6), 297; https://doi.org/10.3390/atmos10060297
Received: 21 April 2019 / Revised: 16 May 2019 / Accepted: 23 May 2019 / Published: 1 June 2019
(This article belongs to the Special Issue Lithosphere–Atmosphere–Ionosphere Coupling (LAIC) Models)
To better understand the ionospheric morphology response to lithospheric activities, we study the global location preference of the positive and negative total electron content (TEC) anomalies persisting continuously for longer than 24 h at middle and low latitudes (within ±60° N geomagnetic latitudes). The TEC is obtained from the global ionospheric map (GIM) of Center for Orbit Determination in Europe (CODE) under the geomagnetic quiet condition of Kp ≤ 3o during the period of 2005 to 2018. There are a few (less than 4%) TEC anomalies that can persist over 24 h. The conjugate phenomenon is most significant in the eastern Asia to Australia longitudinal sector. The result shows the persistence of the positive TEC anomaly along the ring of fire on the western edge of the Pacific Ocean. The high persistence of the TEC anomalies at midlatitudes suggests that thermospheric neutral wind contributes to the anomaly formation. View Full-Text
Keywords: total electron content; TEC anomaly persistence; earthquake; ionospheric weather; lithosphere–atmosphere–ionosphere coupling total electron content; TEC anomaly persistence; earthquake; ionospheric weather; lithosphere–atmosphere–ionosphere coupling
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MDPI and ACS Style

Sun, Y.-Y.; Liu, J.-Y.; Wu, T.-Y.; Chen, C.-H. Global Distribution of Persistence of Total Electron Content Anomaly. Atmosphere 2019, 10, 297.

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