Observations of F3-Layer at Equatorial Region during 2005
The existence of the F3-layer has been observed at Brazilian equatorial stations. The layer has also been observed at the newly established ionosonde station at Batu Pahat (lat. 1 ̊ 86’ N, long. 103 ̊ 8’ E), Malaysia. This station has been in operation since October 2004. Continuous sweep soundin...
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| Main Authors: | , , , , , |
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| Format: | Conference or Workshop Item |
| Language: | en |
| Published: |
2006
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| Subjects: | |
| Online Access: | http://eprints.utem.edu.my/id/eprint/11287/1/EGU06-J-05769.pdf http://eprints.utem.edu.my/id/eprint/11287/ http://meetings.copernicus.org/www.cosis.net/abstracts/EGU06/05769/EGU06-J-05769.pdf |
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| Summary: | The existence of the F3-layer has been observed at Brazilian equatorial stations. The
layer has also been observed at the newly established ionosonde station at Batu Pahat
(lat. 1 ̊ 86’ N, long. 103 ̊ 8’ E), Malaysia. This station has been in operation since
October 2004. Continuous sweep soundings are made every 15 minutes along with
single frequency soundings. Greatest appearance of the F3-layer is around local noon
while the least is after local dawn. The mean height for the layer is about 600 km
reaching a maximum of about 900 km during the winter of 2004/2005. It is seen
that the critical frequency of the F2 layer decreases with the appearance of the F3-
layer. Similar observations have been reported at other equatorial ionosonde locations.
This phenomena can be attributed to the equatorial anomaly and the upward neutral
wind and
E
x
B
drift. The observation reported is based on a one year recording of
ionograms |
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