An equatorial bubble: Its evolution observed in relation to bottomside spread F and to the Appleton anomaly

Journal of Geophysical Research: Space Physics

Volumn 105, Issue A3, 2000, Pages 5303-5315

  Whalen, J A ^a  

^a AIR FORCE RESEARCH LABORATORY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 39449114445     PISSN: None     EISSN: 21699402     Source Type: Journal    
DOI: 10.1029/1999ja900441     Document Type: Article

References (30)

1. Aarons, J., The longitudinal morphology of equatorial F layer irregularities relevant to their occurrence, Space Sci. Rev., 63, 209-243, 1993.
2. Abdu, M. A., G. O. Walker, B. M. Reddy, J. H. Sobral, B. G. Fejer, T. Kikuchi, N. B. Trivedi, and E. P. Szuszczewicz, Electric field versus neutral wind control of the equatorial anomaly under quiet and disturbed conditions: A global perspective from SUNDIAL 86, Ann. Geophys., 8, 419-430, 1990.
3. Anderson, D. N., A theoretical study of the ionospheric F-region equatorial anomaly, I, Theory, Planet. Space Sci., 21, 409-419, 1973.
4. Argo, P. E., and M. E. Kelley, Digital ionosonde observations during equatorial spread F, J. Geophys. Res., 91, 5539-5555, 1986.
5. Beach, T. L., S. Basu, B. K. Dichter, E. Eichin, and K. Groves, The Comm/Nav Outage Forecasting System, Eos Trans. AGU, 80, Spring Meet. Suppl., S242, 1999.
6. Cohen, R., and K. L. Bowles, On the nature of equatorial spread F, J. Geophys. Res., 66, 1081-1106, 1961.
7. Crain, D. J., R. A. Heelis, G. J. Bailey, and A. D. Richmond, Low-latitude plasma drifts from a simulation of the global atmospheric dynamo, J. Geophys. Res., 98, 6039-6046, 1993.
8. Das Gupta, A., J. Aarons, J. A. Klobuchar, S. Basu, and A. Bushby, VHF amplitude scintillations and associated electron content depletions as observed at Arequippa, Peru, J. Atmos. Terr. Phys., 45, 15-26, 1983.
9. Farley, D. T., E. Bonelli, B. G. Fejer, and M. F. Larsen, The prereversal enhancement of the zonal electric field in the equatorial ionosphere, J. Geophys. Res., 91, 13,723-13,728, 1986.
10. Fejer, B. G., E. R. de Paula, and L. Scherliess, Incoherent scatter radar, ionosonde, and satellite measurements of equatorial F region vertical plasma drifts in the evening sector, Geophys. Res. Lett., 23, 1733-1736, 1996.
11. Flaherty, J. P., M. C. Kelley, C. E. Seyler, and T. J. Fitzgerald, Simultaneous VHF and transequatorial HF observations in the presence of bottomside spread F, J. Geophys. Res., 101, 26,811-26,818, 1996.
12. Heelis, R. A., P. C. Kendall, R. J. Moffett, D. W. Windle, and H. Rishbeth, Electrical coupling of the E- and F- regions and its effect on F-region drifts and winds, Planet. Space Sci., 22, 743-756, 1974.
13. Hysell, D. L., and J. D. Burcham, JULIA radar studies of equatorial spread F, J. Geophys. Res., 103, 29,155-29,167, 1998.
14. Kelley, M. C., The Earth's Ionosphere, Plasma Physics and Electrodynamics, Academic, San Diego, Calif., 1989.
15. Kelley, M. C., M. F. Larsen, C. La Hoz, and J. P. McClure, Gravity wave initiation of equatorial spread F: A case study, J. Geophys. Res., 86, 9087-9100, 1981.
16. Kil, H., and R. A. Heelis, Global distribution of density irregularities in the equatorial ionosphere, J. Geophys. Res., 103, 407-417, 1998.
17. Klobuchar, J. A., D. N. Anderson, and P. H. Doherty, Model studies of the latitudinal extent of the equatorial anomaly during equinoctial conditions, Radio Sci., 26, 1025-1047, 1991.
18. Mendillo, M., J. Baumgardner, X. Pi, P. Sultan, and R. Tsunoda, Onset conditions for equatorial spread F, J. Geophys. Res., 97, 13,865-13,876, 1992.
19. Moffett, R. J., The equatorial anomaly in the electron distribution of the terrestrial F region, Fundam. Cosmic Phys., 4, 313-391, 1979.
20. Rastogi, R. G., A. Patil, and S. Alex, Post-sunset uplifting of the equatorial F layer of the ionosphere and vertical plasma drift velocities, J. Geomagn. Geoelectr., 43, 604-611, 1991.
21. Rishbeth, H., The F-layer dynamo, Planet. Space Sci., 19, 263-267, 1971.
22. Trost, T. F., Electron concentrations in the E and upper D regions at Arceibo, J. Geophys. Res., 84, 2736-2742, 1979.
23. Tsunoda, R. T., Time evolution and dynamics of equatorial backscatter plumes, 1, Growth phase, J. Geophys. Res., 86, 139-149, 1981.
24. Tsunoda, R. T., and B. R. White, On the generation and growth of equatorial backscatter plumes, 1, Wave structure in the bottomside F layer, J. Geophys. Res., 86, 3610-3616, 1981.
25. Valladares, C. E., W. B. Hanson, J. P. McClure, and B. L. Cragin, Bottomside sinusoidal irregularities in the equatorial F region, J. Geophys. Res., 88, 8025-8042, 1983.
26. Weber, E. J., H. C. Brinton, J. Buchau, and J. G. Moore, Coordinated airborne and satellite measurements of equatorial plasma depletions, J. Geophys. Res., 87, 10,503-10,513, 1982.
27. Whalen, J. A., Mapping a bubble at dip equator and anomaly with oblique ionospheric soundings of range spread F, J. Geophys. Res., 101, 5185-5193, 1996.
28. Whalen, J. A., Equatorial bubbles observed at the north and south anomaly crests: Dependence on season, local time, and dip latitude, Radio Sci., 32, 1559-1566, 1997.
29. Whalen, J. A., Appleton anomaly increase following sunset: Its observed relation to equatorial F layer E x B drift velocity, J. Geophys. Res., 103, 9497-9503, 1998.
30. Woodman, R. F., and C. La Hoz, Radar observations of F region equatorial irregularities, J. Geophys. Res., 81, 5447-5466, 1976.