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| Titel |
Variations of the ionospheric TEC using simultaneous measurements from the China Crustal Movement Observation Network |
| VerfasserIn |
Y. W. Wu, R. Y. Liu, B. C. Zhang, Z. S. Wu, J. S. Ping, J. M. Liu, Z. J. Hu |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 30, no. 10 ; Nr. 30, no. 10 (2012-10-01), S.1423-1433 |
| Datensatznummer |
250017273
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| Publikation (Nr.) |
 copernicus.org/angeo-30-1423-2012.pdf |
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| Zusammenfassung |
| Variations of the ionospheric Total Electron Content (TEC) over China are
investigated using the TEC data obtained from China Crustal Movement
Observation Network in the year 2004. The results show a single-peak
occurred in post-noon for the diurnal variation and two peaks exit
around two equinox points, respectively, for the seasonal variation. Overall,
the values of TEC increased from the north to the south of China. There were
small but clear longitudinal differences in both sides of the longitudes
with zero magnetic declination. The intensity of the day-to-day variation of
TEC was not a monotonic change along the latitudes. It was usually weaker in
the middle of China than that in the north or south. Comparing with the
maximum F-layer electron density (NmF2) derived from the ionosonde stations
in China, it is found that the day-to-day variation of TEC was less
significant than that of NmF2, and that the northern crest of the equatorial
anomaly identified from the NmF2 data can reach Guangzhou-region. While, the
TEC crest was hardly observed in the same location. This is probably caused
by the tilt of topside ionosphere near the northern anomaly crest region at
lower latitudes. |
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