Effects of neutral wind on the electron temperature at a height of 600 km in the low latitude region
Electron temperature observed by the Hinotori satellite with the low inclination at the height of ~600 km was studied in terms of local time, season, latitude, magnetic declination and solar flux intensity during a 16-month period from 1981 to 1982. The electron temperatures show steep rise in t...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
1996-03-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/14/290/1996/angeo-14-290-1996.pdf |
| _version_ | 1818108874739154944 |
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| author | S. Watanabe K.-I. Oyama |
| author_facet | S. Watanabe K.-I. Oyama |
| author_sort | S. Watanabe |
| collection | DOAJ |
| description | Electron temperature observed by the Hinotori
satellite with the low inclination at the height of ~600 km was studied in
terms of local time, season, latitude, magnetic declination and solar flux
intensity during a 16-month period from 1981 to 1982. The electron temperatures
show steep rise in the early morning (well known as morning overshoot), decrease
after that and again increase at ~18 hours (hereafter named as evening
overshoot). Generally the morning overshoot becomes more enhanced in the winter
hemisphere and for higher solar fluxes. The evening overshoot becomes more
pronounced in the mid-latitude in all seasons and more enhanced in the winter
hemisphere in the same way as the morning overshoot. A difference is seen
between 210°–285° and 285°–360° longitudes where magnetic declination is
different. The longitudinal dependence of electron temperature indicates that
the neutral wind also contributes to the thermal structure in the low latitude
ionosphere. |
| first_indexed | 2024-12-11T02:22:18Z |
| format | Article |
| id | doaj.art-a104ed0e045d4456876208e8d3b106f9 |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-12-11T02:22:18Z |
| publishDate | 1996-03-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-a104ed0e045d4456876208e8d3b106f92022-12-22T01:24:02ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05761996-03-011429029610.1007/s00585-996-0290-5Effects of neutral wind on the electron temperature at a height of 600 km in the low latitude regionS. WatanabeK.-I. OyamaElectron temperature observed by the Hinotori satellite with the low inclination at the height of ~600 km was studied in terms of local time, season, latitude, magnetic declination and solar flux intensity during a 16-month period from 1981 to 1982. The electron temperatures show steep rise in the early morning (well known as morning overshoot), decrease after that and again increase at ~18 hours (hereafter named as evening overshoot). Generally the morning overshoot becomes more enhanced in the winter hemisphere and for higher solar fluxes. The evening overshoot becomes more pronounced in the mid-latitude in all seasons and more enhanced in the winter hemisphere in the same way as the morning overshoot. A difference is seen between 210°–285° and 285°–360° longitudes where magnetic declination is different. The longitudinal dependence of electron temperature indicates that the neutral wind also contributes to the thermal structure in the low latitude ionosphere.https://www.ann-geophys.net/14/290/1996/angeo-14-290-1996.pdf |
| spellingShingle | S. Watanabe K.-I. Oyama Effects of neutral wind on the electron temperature at a height of 600 km in the low latitude region Annales Geophysicae |
| title | Effects of neutral wind on the electron temperature at a height of 600 km in the low latitude region |
| title_full | Effects of neutral wind on the electron temperature at a height of 600 km in the low latitude region |
| title_fullStr | Effects of neutral wind on the electron temperature at a height of 600 km in the low latitude region |
| title_full_unstemmed | Effects of neutral wind on the electron temperature at a height of 600 km in the low latitude region |
| title_short | Effects of neutral wind on the electron temperature at a height of 600 km in the low latitude region |
| title_sort | effects of neutral wind on the electron temperature at a height of 600 km in the low latitude region |
| url | https://www.ann-geophys.net/14/290/1996/angeo-14-290-1996.pdf |
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