Occurrence of Equatorial Plasma Bubbles during Intense Magnetic Storms
An important issue in low-latitude ionospheric space weather is how magnetic storms affect the generation of equatorial plasma bubbles. In this study, we present the measurements of the ion density and velocity in the evening equatorial ionosphere by the Defense Meteorological Satellite Program (DMS...
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Wiley
2011-01-01
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| Series: | International Journal of Geophysics |
| Online Access: | http://dx.doi.org/10.1155/2011/401858 |
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| author | Chao-Song Huang |
| author_facet | Chao-Song Huang |
| author_sort | Chao-Song Huang |
| collection | DOAJ |
| description | An important issue in low-latitude ionospheric space weather is how magnetic storms affect the generation of equatorial plasma bubbles. In this study, we present the measurements of the ion density and velocity in the evening equatorial ionosphere by the Defense Meteorological Satellite Program (DMSP) satellites during 22 intense magnetic storms. The DMSP measurements show that deep ion density depletions (plasma bubbles) are generated after the interplanetary magnetic field (IMF) turns southward. The time delay between the IMF southward turning and the first DMSP detection of plasma depletions decreases with the minimum value of the IMF Bz, the maximum value of the interplanetary electric field (IEF) Ey, and the magnitude of the Dst index. The results of this study provide strong evidence that penetration electric field associated with southward IMF during the main phase of magnetic storms increases the generation of equatorial plasma bubbles in the evening sector. |
| format | Article |
| id | doaj-art-011ff6b577d0495984eb1255c9ca8e80 |
| institution | Kabale University |
| issn | 1687-885X 1687-8868 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Geophysics |
| spelling | doaj-art-011ff6b577d0495984eb1255c9ca8e802025-02-03T05:58:32ZengWileyInternational Journal of Geophysics1687-885X1687-88682011-01-01201110.1155/2011/401858401858Occurrence of Equatorial Plasma Bubbles during Intense Magnetic StormsChao-Song Huang0Boston College, Institute for Scientific Research, 400 St Clement's Hall, 140 Commonwealth Avenue, Chestnut Hill, MA 02467, USAAn important issue in low-latitude ionospheric space weather is how magnetic storms affect the generation of equatorial plasma bubbles. In this study, we present the measurements of the ion density and velocity in the evening equatorial ionosphere by the Defense Meteorological Satellite Program (DMSP) satellites during 22 intense magnetic storms. The DMSP measurements show that deep ion density depletions (plasma bubbles) are generated after the interplanetary magnetic field (IMF) turns southward. The time delay between the IMF southward turning and the first DMSP detection of plasma depletions decreases with the minimum value of the IMF Bz, the maximum value of the interplanetary electric field (IEF) Ey, and the magnitude of the Dst index. The results of this study provide strong evidence that penetration electric field associated with southward IMF during the main phase of magnetic storms increases the generation of equatorial plasma bubbles in the evening sector.http://dx.doi.org/10.1155/2011/401858 |
| spellingShingle | Chao-Song Huang Occurrence of Equatorial Plasma Bubbles during Intense Magnetic Storms International Journal of Geophysics |
| title | Occurrence of Equatorial Plasma Bubbles during Intense Magnetic Storms |
| title_full | Occurrence of Equatorial Plasma Bubbles during Intense Magnetic Storms |
| title_fullStr | Occurrence of Equatorial Plasma Bubbles during Intense Magnetic Storms |
| title_full_unstemmed | Occurrence of Equatorial Plasma Bubbles during Intense Magnetic Storms |
| title_short | Occurrence of Equatorial Plasma Bubbles during Intense Magnetic Storms |
| title_sort | occurrence of equatorial plasma bubbles during intense magnetic storms |
| url | http://dx.doi.org/10.1155/2011/401858 |
| work_keys_str_mv | AT chaosonghuang occurrenceofequatorialplasmabubblesduringintensemagneticstorms |