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| Titel |
Study of sporadic-E clouds by backscatter radar |
| VerfasserIn |
Z. Houminer, C. J. Russell, P. L. Dyson, J. A. Bennett |
| 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 ; 14, no. 10 ; Nr. 14, no. 10, S.1060-1065 |
| Datensatznummer |
250012430
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| Publikation (Nr.) |
 copernicus.org/angeo-14-1060-1996.pdf |
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| Zusammenfassung |
| It is shown that swept-frequency backscatter
ionograms covering a range of azimuths can be used to study the dynamics of
sporadic-E clouds. A simple technique based on analytic ray tracing can be used
to simulate the observed narrow traces associated with Es
patches. This enables the location and extent of the sporadic-E clouds to be
determined. The motion of clouds can then be determined from a time sequence of
records. In order to demonstrate the method, results are presented from an
initial study of 5 days of backscatter ionograms from the Jindalee Stage B data
base obtained during March-April 1990. Usually 2–3 clouds were observed each
day, mainly during the evening and up to midnight. The clouds lasted from 1–4 h
and extended between 30°–80° in azimuth and 150-800 km in range. The clouds
were mostly stationary or drifted generally westward with velocities of up to 80
m s–1. Only one cloud was observed moving eastward. |
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