Magnetic conjugate observation of the F 3 layer using the SEALION ionosonde network

Results from the meridional ionosonde network located in Southeast Asia (SEALION) demonstrate the interesting nature of the F 3 layer, showing its generation mechanism. Ionograms obtained on 16 November 2004 and 31 March 2005 at Chiang Mai (CMU; geographic latitude 18.8°N, geographic longitude 98.9°...

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Bibliographic Details
Published in:Geophysical research letters 2007-01, Vol.34 (2)
Main Authors: Uemoto, Jyunpei, Ono, Takayuki, Maruyama, Takashi, Saito, Susumu, Iizima, Masahide, Kumamoto, Atsushi
Format: Article
Language:English
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Summary:Results from the meridional ionosonde network located in Southeast Asia (SEALION) demonstrate the interesting nature of the F 3 layer, showing its generation mechanism. Ionograms obtained on 16 November 2004 and 31 March 2005 at Chiang Mai (CMU; geographic latitude 18.8°N, geographic longitude 98.9°E, and magnetic latitude 13.2°N), Chumphon (CPN; 10.7°N, 99.4°E, and 3.2°N) and Kototabang (KTB; 0.2°S, 100.3°E, and 10.1°S) showed significant differences between CPN near the magnetic equator, and CMU and KTB in the magnetic low‐latitude region. The simultaneous magnetic conjugate observations of the F 3 layer achieved using the SEALION ionosonde network data showed clear dependences of the F 3 layer on the magnetic latitude. It is suggested that these magnetic latitude dependences of the F 3 layer can be explained by considering the plasma diffusion effects along the magnetic field lines in the magnetic low‐latitude region.
ISSN:0094-8276
1944-8007
DOI:10.1029/2006GL028783