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| Titel |
Some aspects of large-scale travelling ionospheric disturbances which originate at conjugate locations in auroral zones, cross the equator and sometimes encircle the earth |
| VerfasserIn |
G. G. Bowman, I. K. Mortimer |
| 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 ; 29, no. 12 ; Nr. 29, no. 12 (2011-12-01), S.2203-2210 |
| Datensatznummer |
250017137
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| Publikation (Nr.) |
 copernicus.org/angeo-29-2203-2011.pdf |
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| Zusammenfassung |
| The occurrence of large-scale travelling ionospheric disturbances (LS-TIDs)
has been examined. Initially some literature on their generation is
considered. Travel during daylight hours and also paths which involve
propagation paths towards the poles are illustrated by a few examples from
the literature. A daytime ionogram recording of an LS-TID is presented and
discussed as are nighttime ionogram recordings for a poleward path of
propagation. The tabulations of Moscow h'F recordings around midnight are
examined for significant height increases which along with geomagnetic bays
some hours earlier confirm the existence of LS-TIDs. A sunspot-maximum
interval is involved. Some of the Moscow events were related to bays which
occurred 32 h earlier thus indicating earth encirclements. Also additional
encirclements are recorded by using superposed-epoch analyses for some other
events. |
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