dorsal/arxiv
View SchemaRadio and optical observations of large-scale traveling ionospheric disturbances during a strong geomagnetic storm of 6-8 April 2000
| Authors | E. L. Afraimovich, A. B. Beletsky, L. A. Leonovich, O. S. Lesyuta, A. V. Mikhalev, Ya. F. Ashkaliev, V. M. Aushev, V. V. Vodyannikov, A. F. Yakovets |
|---|---|
| Categories | |
| ArXiv ID | physics/0104070 |
| URL | https://arxiv.org/abs/physics/0104070 |
Abstract
Basic properties of the mid-latitude large-scale traveling ionospheric disturbances (LS TIDs) during the maximum phase of a strong magnetic storm of 6-8 April 2000 are shown. Total electron content (TEC) variations were studied by using data from GPS receivers located in Russia and Central Asia. The nightglow response to this storm at mesopause and termospheric altitudes was also measured by optical instruments FENIX located at the observatory of the Institute of Solar-Terrestrial Physics, (51.9 deg. N, 103.0 deg. E) and MORTI located at the observatory of the Institute of Ionosphere (43.2 deg. N, 77.0 deg. E). Observations of the O (557.7 nm, 630.0 nm, 360-410 nm, and 720-830 nm) emissions originating from atmospheric layers centered at altitudes of 90 km, 97 km, and 250 km were carried out at Irkutsk and of the O_2 (866.5 nm) emission originating from an atmospheric layer centered at altitude of 95 km was carried out at Almaty. Variations of the f_0F2 and virtual altitude of the F2 layer were measured at Almaty as well. An analysis of data was performed for the time interval 17.00-21.00 UT comprising a maximum of the Dst derivative. Results have shown that the storm-induced solitary large-scale wave with duration of 1 hour and with the front width of 5000 km moved equatorward with the velocity of 200 ms-1 to a distance of no less than 1000 km. The TEC disturbance, basically displaying an electron content depression in the maximum of the F2 region, reveals a good correlation with growing nightglow emission, the temporal shift between the TEC and emission variation maxima being different for different altitudes.
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"abstract": "Basic properties of the mid-latitude large-scale traveling ionospheric\ndisturbances (LS TIDs) during the maximum phase of a strong magnetic storm of\n6-8 April 2000 are shown. Total electron content (TEC) variations were studied\nby using data from GPS receivers located in Russia and Central Asia. The\nnightglow response to this storm at mesopause and termospheric altitudes was\nalso measured by optical instruments FENIX located at the observatory of the\nInstitute of Solar-Terrestrial Physics, (51.9 deg. N, 103.0 deg. E) and MORTI\nlocated at the observatory of the Institute of Ionosphere (43.2 deg. N, 77.0\ndeg. E). Observations of the O (557.7 nm, 630.0 nm, 360-410 nm, and 720-830 nm)\nemissions originating from atmospheric layers centered at altitudes of 90 km,\n97 km, and 250 km were carried out at Irkutsk and of the O_2 (866.5 nm)\nemission originating from an atmospheric layer centered at altitude of 95 km\nwas carried out at Almaty. Variations of the f_0F2 and virtual altitude of the\nF2 layer were measured at Almaty as well. An analysis of data was performed for\nthe time interval 17.00-21.00 UT comprising a maximum of the Dst derivative.\nResults have shown that the storm-induced solitary large-scale wave with\nduration of 1 hour and with the front width of 5000 km moved equatorward with\nthe velocity of 200 ms-1 to a distance of no less than 1000 km. The TEC\ndisturbance, basically displaying an electron content depression in the maximum\nof the F2 region, reveals a good correlation with growing nightglow emission,\nthe temporal shift between the TEC and emission variation maxima being\ndifferent for different altitudes.",
"arxiv_id": "physics/0104070",
"authors": [
"E. L. Afraimovich",
"A. B. Beletsky",
"L. A. Leonovich",
"O. S. Lesyuta",
"A. V. Mikhalev",
"Ya. F. Ashkaliev",
"V. M. Aushev",
"V. V. Vodyannikov",
"A. F. Yakovets"
],
"categories": [
"physics.geo-ph"
],
"title": "Radio and optical observations of large-scale traveling ionospheric disturbances during a strong geomagnetic storm of 6-8 April 2000",
"url": "https://arxiv.org/abs/physics/0104070"
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