Gadanki radar observations of F region field-aligned irregularities during June solstice of solar minimum: First results and preliminary analysis

Journal of Geophysical Research: Space Physics

Volumn 114, Issue 12, 2009, Pages

  Patra, A K ^b   Phanikumar, D V ^c   Pant, T K ^a  

^a INDIAN SPACE RESEARCH ORGANISATION   (India)

^b NATIONAL ATMOSPHERIC RESEARCH LABORATORY   (India)

^c Korea Astronomy and Space Science Institute (KASI)   (South Korea)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 72049102900     PISSN: None     EISSN: 21699402     Source Type: Journal    
DOI: 10.1029/2009JA014437     Document Type: Article

References (27)

1. Chandra, H., and R. G. Rastogi (1970), Solar cycle and seasonal variation of spread-F near the magnetic equator, J. Atmos. Terr. Phys., 32, 439-443, doi:10.1016/0021-9169(70)90019-X.
2. Chandra, H., and R. G. Rastogi (.1972), Spread-F at magnetic equatorial station Thumba, Ann. Geophys., 28, 37-44.
3. Fejer, B. G., L. Scherliess, and E. R. de Paula (1999), Effects of the vertical plasma drift velocity on the generation and evolution of equatorial spread F, J. Geophys. Res., 104, 19,859-19,869, doi:10.1029/1999JA900271.
4. Fukao, S., M. C. Kelley, T. Shirakawa, T. Takami, M. Yamamoto, T. Tsuda, and S. Kato (1991), Turbulent upwelling of the mid-latitude ionosphere: 1. Observational results by the MU radar, J. Geophys. Res., 96, 3725-3746, doi:10.1029/90JA02253.
5. Fukao, S., Y. Ozawa, T. Yokoyama, M. Yamamoto, and R. T. Tsunoda (2004), First observations of the spatial structure of F region 3-m-scale field-aligned irregularities with the Equatorial Atmosphere Radar in Indonesia, J. Geophys. Res., 109, A02304, doi:10.1029/2003JA010096.
6. Haldoupis, C., M. C. Kelley, G. C. Hussey, and S. Shalimov (2003), Role of unstable sporadic-E layers in the generation of midlatitude spread F, J. Geophys. Res., 108(A12), 1446, doi:10.1029/2003JA009956.
7. Hysell, D. L., and J. D. Burcham (2002), Long term studies of equatorial spread F using the JULIA radar at Jicamarca, J. Atmos. Sol. Terr. Phys., 64, 1531-1543, doi:10.1016/S1364-6826(02)00091-3.
8. Kelley, M. C., and S. Fukao (1991), Turbulent upwelling of the mid-latitude ionosphere: 2. Theoretical framework, J. Geophys. Res., 96, 3747-3753, doi:10.1029/90JA02252.
9. Kelley, M. C., . Haldoupis, M. J. Nicolis, J. J. Makela, A. Belehaki, S. Shalimov, and V. K. Wong (2003), Case studies of coupling between the E and F regions during unstable sporadic-E conditions, J. Geophys. Res., 108(A12), 1447, doi:10.1029/2003JA009955.
10. Nair, R. B., B. Jayachandran, P. B. Rao, and N. Balan (1993), Seasonal, solar and magnetic activity effects on evening F region vertical plasma drifts, Indian J. Radio Space Phys., 22, 89-93.
11. Niranjan, K., P. S. Brahmanandam, P. Ramkrishnarao, G. Uma, D. S. V. V. D. Prasad, and P. V. S. Ramarao (2003), Post midnight spread-F occurrence over Waltair (17.7°N, 83.3°E) during low and ascending phases of solar activity, Ann. Geophys., 21, 745-750. (Pubitemid 36715337)
12. Otsuka, Y., K. Shiokawa, T. Ogawa, T. Yokoyama, and M. Yamamoto (2009), Spatial relationship of nighttime medium-scale traveling ionospheric disturbances and F region field-aligned irregularities observed with two spaced all-sky airglow imagers and the middle and upper atmosphere radar, J. Geophys. Res., 114, A05302, doi:10.1029/2008JA013902.
13. Patra, A. K., P. B. Rao, V. K. Anandan, and A. R. Jain (1997), Radar observations of 2.8 m. equatorial spread F irregularities, J. Atmos. Sol. Terr. Phys., 59, 1633-1641, doi:10.1016/S1364-6826(96)00162-9. (Pubitemid 127410650)
14. Patra, A. K., S. Sripathi, and D. Tiwari (2004), Coupling effect of the equatorial F region irregularities on the low latitude E region instability processes, Geophys. Res. Lett, 31, L17803, doi:10.1029/2004GL020486.
15. Patra, A. K., D. Tiwari, S. Sripathi, P. B. Rao, R. Sridharan, C. V. Devasia, K. S. Viswanathan, K. S. V. Subbarao, R. Sekar, and E. A. Kherani (2005), Simultaneous radar observations of meter-scale F region, irregularities at and off the magnetic equator over India, J. Geophys. Res., 110, A02307, doi:10.1029/2004JA010565.
16. Rao, P. B., A. K. Patra, T. V. C. Sharma, B. V. Krishnamurthy, K. S. V. Subbarao, and S. S. Hari (1997), Radar observations of updrafting and downdrafting plasma depletions associated with equatorial spread F, Radio Sci., 32, 1215-1227, doi:10.1029/97RS00094.
17. Rastogi, R. G., and R. F. Woodman (1978), VHF radio wave scattering due to range and frequency types of equatorial spread-F, J. Atmos. Terr. Phys., 40, 485-491, doi:10.1016/0021-9169(78)90182-4.
18. Saito, S., S. Fukao, M. Yamamoto, Y. Otsuka, and T. Maruyama (2008), Decay of 3-m-scale ionospheric irregularities associated with a plasma bubble observed with the Equatorial Atmosphere Radar, J. Geophys. Res., 113, A11318, doi:10.1029/2008JA013118.
19. Sastri, J. H. (1999), Post-midnight onset of spread-F at Kodaikanal during the June solstice of solar minimum, Ann. Geophys., 17, 1111-1115.
20. Sastri, J. H., B. S. N. Murthy, and K. Sasidharan (1975), On the characteristics of spread-F configurations at Kodaikanal, Ann. Geophys., 31, 409-414.
21. Scherliess, L., and B. G. Fejer (1999), Radar and satellite global equatorial F region vertical drift model, J. Geophys. Res., 104, 6829-6842, doi:10.1029/1999JA900025.
22. Sekar, R., and R. Raghavarao (1987), Role of vertical winds on the Rayleigh-Taylor mode instabilities of the night-time equatorial ionosphere, J. Atmos. Terr. Phys., 49, 981-985, doi:10.1016/0021-9169(87)90104-8.
23. Sekar, R., D. Chakrabarty, S. Sarkhel, A. K. Patra, C. V. Devasia, and M. C. Kelley (2007), Identification of active fossil bubbles based on coordinated VHF radar and airglow measurements, Ann. Geophys., 25, 2099-2102. (Pubitemid 350084204)
24. Subbarao, K. S. V., and B. V. Krishnamurthy (1994), Seasonal variations of equatorial spread-F, Ann. Geophys., 12, 33-39.
25. Venkateswara Rao, N., A. K. Patra, and S. V. B. Rao (2009), Low-altitude quasi-periodic echoes studied using a large database of Gadanki radar observations, J, Geophys. Res., 114, A01313, doi:10.1029/2008JA013397.
26. Woodman, R. F., and C. La Hoz (1976), Radar observations of F region equatorial irregularities, J. Geophys. Res., 81, 5447-5466.
27. s-layer instabilities in the nighttime midlatitude ionosphere, J. Geophys. Res., 114, A03308, doi:10.1029/2008JA013789.