Electric field fluctuations (25-35 min) in the midnight dip equatorial ionosphere

Annales Geophysicae

Volumn 18, Issue 2, 2000, Pages 252-256

  Sastri, J Hanumath ^a   Luhr, H ^b   Tachihara, H ^c   Kitamura, T I ^c   Rao, J V S V ^a  

^a INDIAN INSTITUTE OF ASTROPHYSICS   (India)

^b GFZ GERMAN RESEARCH CENTRE FOR GEOSCIENCES   (Germany)

^c KYUSHU UNIVERSITY   (Japan)

Author keywords

Ionosphere (electric fields and currents; equatorial ionosphere; ionosphere magnetosphere interactions)

Indexed keywords

EID: 5844364927     PISSN: 09927689     EISSN: None     Source Type: Journal    
DOI: 10.1007/s005850050028     Document Type: Article

References (22)

1. Abdu, M. A., J. H. Sastri, H. Luhr, H. Tachihara, T. Kitamura, N. B. Trivedi, and J. H. A. Sobral, DP2 electric field fluctuations in the dusktime dip equatorial ionosphere, Geophys. Res. Lett., 25, 1511-1514, 1998.
2. Araki, T., Global structure of geomagnetic sudden commencements, Planet. Space Sci., 25, 373-384, 1977.
3. Clauer, C. R., and Y. Kamide, DP1 and DP2 current systems for the March 22, 1979 substorms, J. Geophvs. Res., 90, 1343-1354, 1985.
4. Earle, G. D., and M. C. Kelley, Spectral studies of the sources of ionospheric electric fields, J. Geophys. Res., 92, 213-224, 1987.
5. Fejer, B. G., The electrodynamics of the low-latitude ionosphere: recent results and future challenges, J. Atmos. Solar-Terr. Phys., 59, 1465-1482, 1997.
6. Gonzales, C. A., M. C. Kelley, B. G. Fejer, J. F. Vickrey, and R. F. Woodman, Equatorial electric fields during magnetically disturbed conditions 2. Implications of simultaneous auroral and equatorial measurements, J. Geophys. Res., 84, 5803-5812, 1979.
7. Kikuchi, T., and T. Araki, Horizontal transmission of the polar electric field to the equator, J. Atmos. Terr. Phys., 41, 927-936, 1979.
8. Kikuchi, T., T. Araki, H. Maeda, and K. Mackawa, Transmission of polar electric fields to the equator, Nature, 273, 560-561, 1978.
9. Kikuchi, T., H. Luhr, T. Kitamura, O. Saka, and K. Schlegal, Direct penetration of the polar electric field to the equator during a DP2 event as detected by the auroral and equatorial magnetometer chains and the EISCAT radar, J. Geophys. Res., 101, 17 161-17 173, 1996.
10. Nishida, A., Geomagnetic DP2 fluctuations and associated magnetospheric phenomena, J. Geophys. Res., 73, 1795-1803, 1968a.
11. Nishida, A., Coherence of geomagnetic DP2 fluctuations with interplanetary magnetic variations. J. Geophys. Res., 73, 5549-5559, 1968b.
12. Nishida, A., DP2 and polar substorm, Planet. Space Sci., 19, 205-221, 1971.
13. Nishida, A., N. Iwasaki, and T. Nagata, The origin of fluctuations in the equatorial electrojet: a new type of geomagnetic variation. Ann. Geophysicae, 22, 478-484, 1966.
14. Rostoker, G., Low latitude signatures of substorm activity, J. Atmos. Terr. Phys., 55, 985-994, 1993.
15. Sastri, J. H., Short-period (5-33 min) variations in vertical drift of F-region plasma near the magnetic equator, J. Geomag. Geoelectr., 47, 1215-1222, 1995.
16. Sastri, J. H., K. B. Ramesh, and K. S. Ramamoorthy, A system for recording phase path variations of ionospheric reflections, Kodaikanal Ohs. Bull., 5, 15-25, 1985.
17. Sastri, J. H., J. V. S. V. Rao, and K. B. Ramesh, Penetration of polar electric fields to the nightside dip equator at times of geomagnetic sudden commencements, J. Geophys. Res., 98, 17 517-17 523, 1993.
18. Sastri, J. H., Y. N. Huang, T. Shibata, and T. Okuzawa, Response of equatorial-low latitude ionosphere to sudden expansion of magnetosphere, Geophys. Res. Lett., 22, 2649-2652, 1995.
19. Sastri, J. H., M. A. Abdu, and J. H. A. Sobral, Response of equatorial ionosphere to episodes of asymmetric ring current activity, Ann. Geophysicae., 15, 1316-1323, 1997.
20. Senior, C., and M. Blanc, On the control of magnetospheric convection by the spatial distribution of ionospheric conductivities, J. Geophys. Res., 89, 262-284, 1984.
21. Tsunomura, S., Numerical analysis of global ionospheric current system including the effect of equatorial enhancement, Ann. Geophysicae., 17, 692-706, 1999.
22. Tsunomura, S., and T. Araki, Numerical analysis of equatorial enhancement of geomagnetic sudden commencement, Planet. Space Sci., 32, 599-604, 1984.