 |
| Titel |
Altitude integration effects in the skewness of type-2 coherent echoes |
| VerfasserIn |
A. V. Kustov, M. V. Uspensky |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
0992-7689
|
| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 13, no. 9 ; Nr. 13, no. 9, S.946-953 |
| Datensatznummer |
250011979
|
| Publikation (Nr.) |
 copernicus.org/angeo-13-946-1995.pdf |
|
|
|
|
|
| Zusammenfassung |
| 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. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|