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| Titel |
Relationship between strong range SF and ionospheric scintillation in low latitude ionosphere |
| VerfasserIn |
Jiankui Shi, Guojun Wang, Zheng Wang, Xiao Wang, Geliy Zherebtsov, Erina Romanova, Konst Ratovsky |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250077692
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| Zusammenfassung |
| The data from the Digisondes and the ionospheric scintillation monitors located at the low latitude station Hainan (109.1°E, 19.5°N geogr., dip lat. 9°N) and Vanimo (141.3°E, 2.7°N geogr., dip lat. 11°S) are analyzed to study the ionospheric spread F (SF) and its correlation with the scintillation. According to the Digisonde observation in the low latitude ionosphere, we divide the SF as four types: range SF (R-SF), strong range SF (S-SF), frequency SF (F-SF), and mixed SF (M-SF). The S-SF is characterized by extended range spread on F layer echo traces that significantly extend beyond the local foF2 value. For the Hainan station, the results show that the maximum and minimum of the occurrence of S-SF appeared in nearly the same months as those of the GPS L-band scintillations. The variation of the S-SF occurrence was also similar to that of the scintillation. From 2003 to 2007, both the S-SF and the scintillation occurrences decreased from the high solar activity year to the low solar activity year. The correlation coefficient between the occurrences of the S-SF and the GPS L-band scintillation was as high as 0.93 suggesting associated mechanisms producing S-SF and scintillation. For the Vanimo station, the data analysis showed that the occurrence variation of the S-SF was also similar to that of the scintillation. The correlation coefficient between the two phenomena was as high as 0.88, which supports the view of the associated mechanisms to produce S-SF and scintillation. Electron density depletions extending from the bottomside to the topside ionosphere are the most likely cause explaining the high correlation. |
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