Abdu, M. A., Bittencourt, J. A., & Batista, I. S. (1981). Magnetic declination control of the equatorial F region dynamo electric field development and spread F. Journal of Geophysical Research, 86(A13), 11443. https://doi.org/10.1029/JA086iA13p11443
Abdu, M. ., Sobral, J. H. ., Nelson, O. ., & Batista, I. . (1985). Solar cycle related range type spread-F occurrence characteristics over equatorial and low latitude stations in Brazil. Journal of Atmospheric and Terrestrial Physics, 47(8–10), 901–905. https://doi.org/10.1016/0021-9169(85)90065-0
Abdu, M. A., Sobral, J. H. A., Batista, I. S., Rios, V. H., & Medina, C. (1998). Equatorial spread-F occurrence statistics in the American longitudes: Diurnal, seasonal and solar cycle variations. Advances in Space Research, 22(6), 851–854. https://doi.org/10.1016/S0273-1177(98)00111-2
Abdu, M. A., Souza, J. R., Batista, I. S., & Sobral, J. H. A. (2003). Equatorial spread F statistics and empirical representation for IRI: A regional model for the Brazilian longitude sector. Advances in Space Research, 31(3), 703–716. https://doi.org/10.1016/S0273-1177(03)00031-0
Abdu, M. A., Kherani, E. A., & Sousasantos, J. (2020). Role of Bottom‐Side Density Gradient in the Development of Equatorial Plasma Bubble/Spread F Irregularities: Solar Minimum and Maximum Conditions. Journal of Geophysical Research: Space Physics, 125(10), 0–3. https://doi.org/10.1029/2020JA027773
Afolayan, A. O., Jit Singh, M., Abdullah, M., Buhari, S. M., Yokoyama, T., & Supnithi, P. (2019). Observation of seasonal asymmetry in the range spread F occurrence at different longitudes during low and moderate solar activity. Annales Geophysicae, 37(4), 733–745. https://doi.org/10.5194/angeo-37-733-2019
Alfonsi, L., Spogli, L., Tong, J. R., De Franceschi, G., Romano, V., Bourdillon, A., … Mitchell, C. N. (2011). GPS scintillation and TEC gradients at equatorial latitudes in April 2006. Advances in Space Research, 47(10), 1750–1757. https://doi.org/10.1016/j.asr.2010.04.020
Alfonsi, L., Spogli, L., Pezzopane, M., Romano, V., Zuccheretti, E., De Franceschi, G., … Ezquer, R. G. (2013). Comparative analysis of spread-F signature and GPS scintillation occurrences at Tucumán, Argentina. Journal of Geophysical Research: Space Physics, 118(7), 4483–4502. https://doi.org/10.1002/jgra.50378
Aquino, M., & Sreeja, V. (2013). Correlation of scintillation occurrence with interplanetary magnetic field reversals and impact on global navigation satellite system receiver tracking performance. Space Weather, 11(5), 219–224. https://doi.org/10.1002/swe.20047
Batista, I. S., de Medeiros, R. T., Abdu, M. A., de Souza, J. R., Bailey, G. J., & de Paula, E. R. (1996). Equatorial ionospheric vertical plasma drift model over the Brazilian region. Journal of Geophysical Research: Space Physics, 101(A5), 10887–10892. https://doi.org/10.1029/95JA03833
Becker-Guedes, F., Sahai, Y., Fagundes, P. R., Lima, W. L. C., Pillat, V. G., Abalde, J. R., & Bittencourt, J. A. (2004). Geomagnetic storm and equatorial spread-F. Annales Geophysicae, 22(9), 3231–3239. https://doi.org/10.5194/angeo-22-3231-2004
Beshir, E., Nigussie, M., & Moldwin, M. B. (2020). Characteristics of equatorial nighttime spread F – An analysis on season-longitude, solar activity and triggering causes. Advances in Space Research, 65(1), 95–106. https://doi.org/10.1016/j.asr.2019.09.020
Booker, G., & Wells, H. W. (1938). Scattering of radio waves by the F-region of the ionosphere. Journal of Geophysical Research, 43, 249–256. Retrieved from https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/TE043i003p00249
Bowman, G. G., & Mortimer, I. K. (2003). Influence of geomagnetic activity on the occurrence of midlatitude ionogram-recorded spread-F. Indian Journal of Radio and Space Physics, 32(1), 16–20.
Bullett, T. (2008). Station Report : A new ionosonde at Boulder. Retrieved from https://www.sws.bom.gov.au/IPSHosted/INAG/web-69/2008/boulder_vipir.pdf
Cabrera, M. A., Pezzopane, M., Zuccheretti, E., & Ezquer, R. G. (2010). Satellite traces, range spread-F occurrence, and gravity wave propagation at the southern anomaly crest. Annales Geophysicae, 28(5), 1133–1140. https://doi.org/10.5194/angeo-28-1133-2010
Candido, C. M. N., Batista, I. S., Becker-Guedes, F., Abdu, M. A., Sobral, J. H. A., & Takahashi, H. (2011). Spread F occurrence over a southern anomaly crest location in Brazil during June solstice of solar minimum activity. Journal of Geophysical Research: Space Physics, 116(6), 2008–2009. https://doi.org/10.1029/2010JA016374
Çepni, M. S., Potts, L. V., & Miima, J. B. (2013). High-resolution station-based diurnal ionospheric total electron content (TEC) from dual-frequency GPS observations. Space Weather, 11(9), 520–528. https://doi.org/10.1002/swe.20093
Chum, J., Liu, J. Y., Chen, S. P., Cabrera, M. A., Laštovička, J., Baše, J., … Ezquer, R. (2016). Spread F occurrence and drift under the crest of the equatorial ionization anomaly from continuous Doppler sounding and FORMOSAT-3/COSMIC scintillation data. Earth, Planets and Space, 68(1), 1–18. https://doi.org/10.1186/s40623-016-0433-1
Cueva, R. Y. C., De Paula, E. R., & Kherani, A. E. (2013). Statistical analysis of radar observed F region irregularities from three longitudinal sectors. Annales Geophysicae, 31(12), 2137–2146. https://doi.org/10.5194/angeo-31-2137-2013
Dabas, R. S., Das, R. M., Sharma, K., Garg, S. C., Devasia, C. V., Subbarao, K. S. V., … Rama Rao, P. V. S. (2007). Equatorial and low latitude spread-F irregularity characteristics over the Indian region and their prediction possibilities. Journal of Atmospheric and Solar-Terrestrial Physics, 69(6), 685–696. https://doi.org/10.1016/j.jastp.2007.01.002
DasGupta A., B. S. A. J. K. J. A. B. S. B. A., DasGupta, A., Basu, S. S., Aarons, J., Klobuchar, J. A., & Bushby, A. (1983). VHF amplitude scintillations and associated electron content depletions as observed at Arequipa, Peru. Journal of Atmospheric and Terrestrial Physics, 45(1), 15-19,21-26. Retrieved from http://www.sciencedirect.com/science/article/pii/S0021916983800038
Dashora, N., & Pandey, R. (2005). Observations in equatorial anomaly region of total electron content enhancements and depletions. Annales Geophysicae, 23(7), 2449–2456. https://doi.org/10.5194/angeo-23-2449-2005
Deng, Z., Wang, R., Liu, Y., Xu, T., Wang, Z., Chen, G., … Zhou, C. (2021). Investigation of Low Latitude Spread-F Triggered by Nighttime Medium-Scale Traveling Ionospheric Disturbance. Remote Sensing, 13(5), 945. https://doi.org/10.3390/rs13050945
Fejer, B. G., Scherliess, L., & de Paula, E. R. (1999). Effects of the vertical plasma drift velocity on the generation and evolution of equatorial spread F. Journal of Geophysical Research: Space Physics, 104(A9), 19859–19869. https://doi.org/10.1029/1999JA900271
Kelley, M. C. (2009). The Earth’s Ionosphere: Plasma Physics and Electrodynamics. International geophysics series; v. 96 (Second edition). Retrieved from https://www.sciencedirect.com/bookseries/international-geophysics/vol/96/suppl/C
Klinngam, S., Supnithi, P., Rungraengwajiake, S., Tsugawa, T., Ishii, M., & Maruyama, T. (2015). The occurrence of equatorial spread-F at conjugate stations in Southeast Asia. Advances in Space Research, 55(8), 2139–2147. https://doi.org/10.1016/j.asr.2014.10.003
Kotulak, K., Zakharenkova, I., Krankowski, A., Cherniak, I., Wang, N., & Fron, A. (2020). Climatology Characteristics of Ionospheric Irregularities Described with GNSS ROTI. Remote Sensing, 12(16), 2634. https://doi.org/10.3390/rs12162634
Lan, T., Jiang, C., Yang, G., Zhang, Y., Liu, J., & Zhao, Z. (2019). Statistical analysis of low-latitude spread F observed over Puer, China, during 2015–2016. Earth, Planets and Space, 71(1), 138. https://doi.org/10.1186/s40623-019-1114-7
Lee, C. C., Chu, F. D., Chen, W. S., Liu, J. Y., Su, S.-Y., Liou, Y. A., & Yu, S. B. (2009). Spread F, GPS phase fluctuations, and plasma bubbles near the crest of equatorial ionization anomaly during solar maximum. Journal of Geophysical Research: Space Physics, 114(A8), n/a-n/a. https://doi.org/10.1029/2009JA014195
Li, Q., Zhu, Y., Fang, K., & Fang, J. (2020). Statistical Study of the Seasonal Variations in TEC Depletion and the ROTI during 2013–2019 over Hong Kong. Sensors, 20(21), 6200. https://doi.org/10.3390/s20216200
Magdaleno, S., Herraiz, M., & de la Morena, B. A. (2012). Characterization of equatorial plasma depletions detected from derived GPS data in South America. Journal of Atmospheric and Solar-Terrestrial Physics, 74, 136–144. https://doi.org/10.1016/j.jastp.2011.10.014
Manju, G., Madhav Haridas, M. K., & Aswathy, R. P. (2016). Role of gravity wave seed perturbations in ESF day-to-day variability: A quantitative approach. Advances in Space Research, 57(4), 1021–1028. https://doi.org/10.1016/j.asr.2015.12.019
Muella, M. T. A. H., Kherani, E. A., De Paula, E. R., Cerruti, A. P., Kintner, P. M., Kantor, I. J., … Abdu, M. A. (2010). Scintillation-producing Fresnel-scale irregularities associated with the regions of steepest TEC gradients adjacent to the equatorial ionization anomaly. Journal of Geophysical Research: Space Physics, 115(3), 1–19. https://doi.org/10.1029/2009JA014788
Nishioka, M., Saito, A., & Tsugawa, T. (2008). Occurrence characteristics of plasma bubble derived from global ground-based GPS receiver networks. Journal of Geophysical Research: Space Physics, 113(5), 1–12. https://doi.org/10.1029/2007JA012605
Pezzopane, M., Zuccheretti, E., Abadi, P., De Abreu, A. J., De Jesus, R., Fagundes, P. R., … Ezquer, R. G. (2013). Low-latitude equinoctial spread-F occurrence at different longitude sectors under low solar activity. Annales Geophysicae, 31(2), 153–162. https://doi.org/10.5194/angeo-31-153-2013
Pietrella, M., Pezzopane, M., Fagundes, P. R., de Jesus, R., Supnithi, P., Klinngam, S., … Cabrera, M. A. (2017). Equinoctial spread-F occurrence at low latitudes in different longitude sectors under moderate and high solar activity. Journal of Atmospheric and Solar-Terrestrial Physics, 164, 149–162. https://doi.org/10.1016/j.jastp.2017.07.007
Piggott, W. R., & Rawer, K. (1978). Revision of Chapters 1-4 U.R.S.I. Handbook of Ionogram Interpretation and Reduction. Report UAG-23A (Second). Boulder, Colorado: World Data Cent. A for Sol. Terr. Phys.
Reinisch, B. W., Abdu, M., Batista, I., Sales, G. S., Khmyrov, G., Bullett, T. A., … Rios, V. (2004). Multistation digisonde observations of equatorial spread F in South America. Annales Geophysicae, 22(9), 3145–3153. https://doi.org/10.5194/angeo-22-3145-2004
Sahai, Y., Aarons, J., Mendillo, M., Baumgardner, J., Bittencourt, J. A., & Takahashi, H. (1994). OI 630 nm imaging observations of equatorial plasma depletions at 16° S dip latitude. Journal of Atmospheric and Terrestrial Physics, 56(11), 1461–1475. https://doi.org/10.1016/0021-9169(94)90113-9
Sahai, Y., Fagundes, P. R., & Bittencourt, J. A. (2000). Transequatorial F-region ionospheric plasma bubbles: solar cycle effects. Journal of Atmospheric and Solar-Terrestrial Physics, 62(15), 1377–1383. https://doi.org/10.1016/S1364-6826(00)00179-6
Seemala, G. K., & Valladares, C. E. (2011). Statistics of total electron content depletions observed over the South American continent for the year 2008. Radio Science, 46(5), 1–14. https://doi.org/10.1029/2011RS004722
Seker, I., Fung, S. F., & Mathews, J. D. (2011). Relation between magnetospheric state parameters and the occurrence of plasma depletion events in the nighttime midlatitude F region. Journal of Geophysical Research: Space Physics, 116(4), 1–11. https://doi.org/10.1029/2010JA015521
Shetti, D. J., Gurav, O. B., & Seemla, G. K. (2019). Occurrence characteristics of equatorial plasma bubbles and total electron content during solar cycle peak 23rd to peak 24th over Bangalore (13.02∘ N, 77.57∘ E). Astrophysics and Space Science, 364(9). https://doi.org/10.1007/s10509-019-3643-8
Shi, J. K., Wang, G. J., Reinisch, B. W., Shang, S. P., Wang, X., Zherebotsov, G., & Potekhin, A. (2011). Relationship between strong range spread F and ionospheric scintillations observed in Hainan from 2003 to 2007. Journal of Geophysical Research: Space Physics, 116(8), 1–5. https://doi.org/10.1029/2011JA016806
Thammavongsy, P., Supnithi, P., Phakphisut, W., Hozumi, K., Tsugawa, T., & Bannop, K. (2020). The Statistics of Equatorial Spread-F and Effects on Critical Frequency at Chumphon, Thailand. In Proceedings of the Sriwijaya International Conference on Information Technology and Its Applications (SICONIAN 2019) (Vol. 172, pp. 691–695). Paris, France: Atlantis Press. https://doi.org/10.2991/aisr.k.200424.105
Timoçin, E., Inyurt, S., Temuçin, H., Ansari, K., & Jamjareegulgarn, P. (2020). Investigation of equatorial plasma bubble irregularities under different geomagnetic conditions during the equinoxes and the occurrence of plasma bubble suppression. Acta Astronautica, 177(August), 341–350. https://doi.org/10.1016/j.actaastro.2020.08.007
Tsunoda, R. T., & Towle, D. M. (1979). On the spatial relationship of 1‐meter equatorial spread‐F irregularities and depletions in total electron content. Geophysical Research Letters, 6(11), 873–876. https://doi.org/10.1029/GL006i011p00873
Tsunoda, R. T. (1985). Control of the seasonal and longitudinal occurrence of equatorial scintillations by the longitudinal gradient in integrated E region Pedersen conductivity. Journal of Geophysical Research: Space Physics, 90(A1), 447–456. https://doi.org/10.1029/JA090iA01p00447
Valladares, C. E., Villalobos, J., Sheehan, R., & Hagan, M. P. (2004). Latitudinal extension of low-latitude scintillations measured with a network of GPS receivers. Annales Geophysicae, 22(9), 3155–3175. https://doi.org/10.5194/angeo-22-3155-2004
Yizengaw, E., & Groves, K. M. (2018). Longitudinal and Seasonal Variability of Equatorial Ionospheric Irregularities and Electrodynamics. Space Weather, 16(8), 946–968. https://doi.org/10.1029/2018SW001980
Yokoyama, T., Fukao, S., & Yamamoto, M. (2004). Relationship of the onset of equatorial F region irregularities with the sunset terminator observed with the Equatorial Atmosphere Radar. Geophysical Research Letters, 31(24), 1–4. https://doi.org/10.1029/2004GL021529
Wakai, N., Ohyama, H., & Koizumi, T. (1987). Manual of Ionogram Scaling (Third Vers). Japan: Ministry of Posts and Telecommunications. Retrieved from https://www.sws.bom.gov.au/IPSHosted/INAG/scaling/japanese_manual_v3.pdf
Weber, E. J., Basu, S., Bullett, T. W., Valladares, C., Bishop, G., Groves, K., … Araya, J. (1996). Equatorial plasma depletion precursor signatures and onset observed at 11° south of the magnetic equator. Journal of Geophysical Research: Space Physics, 101(A12), 26829–26838. https://doi.org/10.1029/96ja00440
Whalen, J. A. (2003). Dependence of the equatorial anomaly and of equatorial spread f on the maximum prereversal E × B drift velocity measured at solar maximum. Journal of Geophysical Research: Space Physics, 108(A5), 1–9. https://doi.org/10.1029/2002JA009755