IONOSPHERIC EFFECTS OF METEOR EXPLOSION OVER NORTH FINLAND ON NOVEMBER 2017
On November 16, 2017 at 16:40:22 UT over Northern Finland a powerful explosion, caused by meteor destruction, had occurred. The entry of the meteor to the atmosphere and its destruction were recorded by the all sky camera at the radio physical observatory Verkhnetulomsky (68.59°N, 31.75°E), and the...
| Main Authors: | , , |
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| Format: | Conference Object |
| Language: | English |
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Кольский научный центр Российской академии наук
2018
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.25702/ksc.2588-0039.2018.41.102-105 http://pgia.ru/seminar/archive/2018/Proceedings_2018.pdf#page=103 |
| Summary: | On November 16, 2017 at 16:40:22 UT over Northern Finland a powerful explosion, caused by meteor destruction, had occurred. The entry of the meteor to the atmosphere and its destruction were recorded by the all sky camera at the radio physical observatory Verkhnetulomsky (68.59°N, 31.75°E), and the response of the high-latitude lower ionosphere to this explosion was recorded by the radar of the partial reflections at the radio physical observatory Tumanny (69.0°N, 35.7°E). After the explosion the considerable disturbances in the ordinary wave amplitude at the heights of 80-95 km have appeared. Using the temporal variations of the ordinary wave amplitude the periods corresponding to resonant atmospheric modes were identified: the acoustic cut-off period and the Brunt-Väisälä period, and also temperature and sonic speed at the mesopause heights were calculated. It was suggested that the disturbances could be caused by the waves which had magnetohydrodynamic nature. |
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