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| Titel |
Plasma drift estimates from the Dynasonde: comparison with EISCAT measurements |
| VerfasserIn |
K. J. F. Sedgemore, J. W. Wright, P. J. S. Williams, G. O. L. Jones, M. T. Rietveld |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 16, no. 10 ; Nr. 16, no. 10, S.1138-1143 |
| Datensatznummer |
250013484
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| Publikation (Nr.) |
 copernicus.org/angeo-16-1138-1998.pdf |
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| Zusammenfassung |
Modern ionosondes make almost simultaneous
measurements of the time rate of change of phase path in different directions
and at different heights. By combining these 'Doppler' measurements and angles
of arrival of many such radar echoes it is possible to derive reliable estimates
of plasma drift velocity for a defined scattering volume. Results from both
multifrequency and kinesonde-mode soundings at 3-min resolution show that the
Dynasonde-derived F-region drift velocity is in good agreement with
EISCAT, despite data loss during intervals of 'blanketing' by intense E-region
ionisation. It is clear that the Tromsø Dynasonde, employing standard operating
modes, gives a reliable indication of overall convection patterns during quiet
to moderately active conditions.
Key words. Auroral ionosphere · Plasma convection ·
Instruments and techniques |
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