Abstract
The spread F data obtained over Lanzhou (36.1°N, 103.9°E), Chongqing (29.5°N, 106.4°E) and Haikou (20.0°N, 110.3°E) of China during the period from 1978 to 1997 are used to analyze the occurrence characteristics. The statistical results show that the post midnight spread F occurrence is maximum during the summer solstice months of the lower solar activity period, while post sunset spread F is dominant in equinoxes of higher solar activity period over Haikou station. Over Chongqing and Lanzhou stations, spread F mostly occurs at post midnight and relates negatively with solar activity. Using regression method and Fourier expansion, the preliminary single-station model of spread F occurrence is established and the accuracy of the model is evaluated.
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References
Booker H G, Well H W. Scattering of radio waves by the F region ionosphere. Terr Mag Atom Electn, 1938, 43: 249–256
Ossakow S L, Zalesak S T, McDonald B E. Nonlinear equatorial spread F: dependence on altitude of the F peak and bottomside background electron density gradient scale length. J Geophys Res, 1979, 84: 17–29
Huang Y N, Cheng K, Huang W T. Seasonal and solar cycle variations of spread F at the equatorial anomaly crest zone. J Geomag Geoelectr, 1987, 39: 639–657
Kil H, Heelis R A. Global distribution of density irregularities in the equatorial ionosphere. J Geophys Res, 1998, 103: 407–417
Mathews J D, Gonzalez S, Sulzer M P, et al. Kilometer-scale layered structures inside spread-F. Geophys Res Lett, 2001, 28: 4167–4170
Dabas R S, Rupesh M D, Kavita Sharma, et al. Equatorial and low latitude spread-F irregularity characteristics over the Indian region and their prediction possibilities. J Atmos Solar-Terr Phys, 2007, 69: 685–696
Kudeki E, Akgiray A, Milla M, et al. Equatoria l spread- F initiation: Post-sunset vortex, thermospheric winds, gravity waves. J Atmos Solar-Terr Phys, 2007, 69: 2461–2472
Abdu M A, Alam K, Bastista I S, et al. Gravity wave initiation of equatorial spread F/plasma bubble irregularities based on observation data from the spreadFEx campaign. Ann Geophys, 2009, 27: 2607–2622
Welsey E S, Ronald F W. Same night observations of spread-F by the Jicamarca radio observation in Peru and CUPRI in Alcântara, Brazil. Geophys Res Lett, 1998, 25: 17–20
Abdu M A, Sobral J H, Batista I S. Equatorial spread F statistical in the American longitudes: some problems relevant to ESF description in the IRI scheme. Adv Space Res 2000, 25: 113–124
Saksena R C. Occurrence statistical for spread-F Indian subcontinent. Adv Space Res, 1996, 18: 99–102
Fritts D C, Abdu M A, Bastista B F, et al. Overview and summary of the spread F experiment (SpreadFEx). Ann Geophys, 2009, 27: 2141–2155
Woodman R F. Spread-F—an old equatorial aeronomy problem finally resolved? Ann Geophys, 2009, 27: 1915–1934
Huang X Y, Zhang S R. Sporadic E. Spread-F and some ionospheric osillatory phenomena in the Far East. Adv Space Res, 1996, 18: 45–48
Xiao Z, Zhang T H. A theoretical analysis of global characteristics of spread-F. Chinese Sci Bull, 2001, 46: 1593–1595
Wang G J, Shi J K, Wang X, et al. Seasonal variation of spread-F observed in Hainan. Adv Space Res, 2008, 41: 639–644
Abdu M A, Souza J R, Batista I S, et al. Equatorial spread F statistical and empirical representation for IRI: a regional model for the Brazilian longitude sector. Adv Space Res, 2003, 31: 703–716
Abdu M A, Sobral J H, Nelson O R, et al. Solar cycle related range type spread-F occurrence characteristics over equatorial and low latitude stations in Brazil. J Atmos Terr Phys, 1985, 47: 901–905
Abdu M A, Batista I S, Sobral J H. A new aspect of magnetic declination control of equatorial spread F and F region dynamo. J Geophy Res, 1992, 97(A10): 14897–14904
Bilitza D, Reinisch B W. International Reference Ionosphere 2007: Improvements and new parameters. Adv Space Res, 2008, 42: 599–509
Huang W Q, Xiao S G, Xiao Z, et al. Comparison study of IRI-2007 spread F occurrence predictions and observations, Chin J Space Sci, 2009, 29: 275–280
Zhang T H, Xiao Z. Global distribution characteristics of spread-F(II). Sci China Ser E-Tech Sci, 2001, 44: 661–669
Rao Rama P V S, Prasad D S V V D, Niranjan K, et al. Muti-station studies on spread-F and VHF scintillations in the Indian sector. Terr Atmos Ocean Sci, 2004, 15: 667–681
Vybornov F I, Mityakova E E, Rakhlin A V. Behavior characteristics of the index of middle-latitude F-spread. Radio Phys Quantum Electron, 1997, 40: 206–209
Igarashi K, Kato H. Solar cycle variations and latitudinal dependence on the mid-latitude spread-F occurrence around Japan. 2004. available from: <http://www.ips.gov.auIPSHosted/INAG /uag-104/text/igarashi.html>
Miller C A. Electrodynamics of midlatitude spread F-2: a new theory of gravity wave electric fields. J Geophys Res, 1997, 102: 11533–11538
Shimazaki T. A statistical study of world-wide occurrence probability of spread-F. J Radio Res Labs, 1965, 6: 669–687
Bowman G G. Upper atmosphere neutral-particle density variations compared with spead-F occurrence rates at locations around the world. Ann Geophys, 1992, 10: 676–682
Niranjan K, Brahmanandam P S, Ramakrishna P R, et al. Post midnight spread-F occurrence over Waltair (17.7°N, 83.3°E) during low and ascending phases of solar activity. Ann Geophys, 2003, 21: 745–750
Mikhailov A, Mikhailov V. A new ionospheric index MF2. Adv Space Res, 1995, 15: 93–97
Liu L B, Wan W X, Ning B Q, et al. Solar activity variations of the ionospheric peak electron density. J Geophy Res, 2006, 111, A08304, doi:10.1029/2006JA011598
Liu L B, Wan W X, Ning B Q. Statistical modeling of ionospheric foF2 over Wuhan. Radio Sci, 2004, 39: RS2013, doi: 10.1029/2003RS003005
Xu T, Wu Z S, Wu J, et al. Solar cycle variation of the monthly median foF2 at Chongqing station, China. Adv Space Res, 2008, 42: 213–218
Zolesi B, Cander Lj R and Franceschi G D. Simplified ionospheic regional model for telecommunication application. Radio Sci, 1993, 28: 603–612
Xu T, Wu Z S, Wu J, et al. A single-station spectral model of the monthly median foF2 over Chongqing, China. Ann Geophy, 2008, 51: 609–618
Bowman G G. spread F in the ionosphere and the neutral particle density of the upper atmosphere, Nature, 1964, 201: 564–566
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This work was supported by the National Natural Science Foundation of China (Grant No. 40831062), the National Defense Foundation of China (Grant No. H0901008), and the National Key Technology R&P Program (Grant No. 2006BAB18B06).
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Xu, T., Wu, Z., Hu, Y. et al. Statistical analysis and model of spread F occurrence in China. Sci. China Technol. Sci. 53, 1725–1731 (2010). https://doi.org/10.1007/s11431-010-3169-3
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DOI: https://doi.org/10.1007/s11431-010-3169-3