Altitude integration effects in the skewness of type-2 coherent echoes
Possible effects of signal reception from different electrojet heights in a skewness of auroral coherent spectra are studied assuming that the "inherent" spectral line due to plasma turbulence is of type-2 and symmetrical. For reasonable ionospheric parameters, the altitude int...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
1995-09-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/13/946/1995/angeo-13-946-1995.pdf |
| _version_ | 1830358333258727424 |
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| author | A. V. Kustov M. V. Uspensky |
| author_facet | A. V. Kustov M. V. Uspensky |
| author_sort | A. V. Kustov |
| collection | DOAJ |
| description | Possible effects of signal reception from
different electrojet heights in a skewness of auroral coherent spectra are
studied assuming that the "inherent" spectral line due to plasma
turbulence is of type-2 and symmetrical. For reasonable ionospheric parameters,
the altitude integrated spectra are expected to be skewed negatively for
positive mean Doppler shift, in agreement with radar observations at small
aspect angles. However, the spectra could be skewed positively if the turbulent
layer or the electron density profile is shifted to high altitudes of ~120 km.
This change of spectral shape will not be observed experimentally if, at the
same time, either the electron collision frequency is enhanced or the
"inherent" spectral width is increased. Observational results are
discussed in view of the predictions given. |
| first_indexed | 2024-12-20T02:40:19Z |
| format | Article |
| id | doaj.art-5d7c49b155864276a0e4a8000dc61ccf |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-12-20T02:40:19Z |
| publishDate | 1995-09-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-5d7c49b155864276a0e4a8000dc61ccf2022-12-21T19:56:20ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05761995-09-011394695310.1007/s00585-995-0946-6Altitude integration effects in the skewness of type-2 coherent echoesA. V. KustovM. V. UspenskyPossible effects of signal reception from different electrojet heights in a skewness of auroral coherent spectra are studied assuming that the "inherent" spectral line due to plasma turbulence is of type-2 and symmetrical. For reasonable ionospheric parameters, the altitude integrated spectra are expected to be skewed negatively for positive mean Doppler shift, in agreement with radar observations at small aspect angles. However, the spectra could be skewed positively if the turbulent layer or the electron density profile is shifted to high altitudes of ~120 km. This change of spectral shape will not be observed experimentally if, at the same time, either the electron collision frequency is enhanced or the "inherent" spectral width is increased. Observational results are discussed in view of the predictions given.https://www.ann-geophys.net/13/946/1995/angeo-13-946-1995.pdf |
| spellingShingle | A. V. Kustov M. V. Uspensky Altitude integration effects in the skewness of type-2 coherent echoes Annales Geophysicae |
| title | Altitude integration effects in the skewness of type-2 coherent echoes |
| title_full | Altitude integration effects in the skewness of type-2 coherent echoes |
| title_fullStr | Altitude integration effects in the skewness of type-2 coherent echoes |
| title_full_unstemmed | Altitude integration effects in the skewness of type-2 coherent echoes |
| title_short | Altitude integration effects in the skewness of type-2 coherent echoes |
| title_sort | altitude integration effects in the skewness of type 2 coherent echoes |
| url | https://www.ann-geophys.net/13/946/1995/angeo-13-946-1995.pdf |
| work_keys_str_mv | AT avkustov altitudeintegrationeffectsintheskewnessoftype2coherentechoes AT mvuspensky altitudeintegrationeffectsintheskewnessoftype2coherentechoes |