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| Titel |
Joint observations of a traveling ionospheric disturbance with the Paratunka OMTI camera and the Hokkaido HF radar |
| VerfasserIn |
A. Koustov, N. Nishitani, P. V. Ponomarenko, K. Shiokawa, S. Suzuki, B. M. Shevtsov, J. W. MacDougall |
| 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 ; 27, no. 6 ; Nr. 27, no. 6 (2009-06-09), S.2399-2406 |
| Datensatznummer |
250016553
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| Publikation (Nr.) |
 copernicus.org/angeo-27-2399-2009.pdf |
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| Zusammenfassung |
| On 10 September 2007 between 10:00 and 14:00 UT, the OMTI all-sky imager at
Paratunka (Kamchatka, Russia, GLAT~52°) observed the onset and
south-western progression of a localized depletion region in the airglow
intensity. The perturbation, while being stretched in the NW-SE direction,
crossed the entire field of view of the camera. During the event, the
Hokkaido SuperDARN HF radar was monitoring echoes in the Paratunka
longitudinal sector. It was detecting a localized band of ground scatter
echoes progressing equatorward synchronously with the motion of the optical
perturbation. It is suggested that both features resulted from the onset and
south-western progression of a localized region with enhanced electric field
that influenced the distribution of the plasma density in the ionosphere.
Modeling of the HF ground scatter dynamics based on numerical ray tracing
demonstrated qualitative consistency with the observations. |
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