Volume 3, Issue 3, June 2015, Page: 30-41
Day-to-Day Variability of Low Latitude F-Region Ionosphere During Low Solar Activity
Anju Nagar, Department of Physics, S.M.S. Govt Model Science College Gwalior Madhya Pradesh, India
Satyadeo Mishra, Department of Physics, Govt M.L.B. PG College Bhopal Madhya Pradesh, India
Surendra Kumar Vijay, Department of Physics, Institute for Excellence in Higher Education, Bhopal, India
Received: Jan. 30, 2015;       Accepted: Apr. 14, 2015;       Published: May 7, 2015
DOI: 10.11648/j.ijass.20150303.12      View  5218      Downloads  249
This paper presents an analysis of the F-region variability of the ionospheric parameters [foF2and M(3000)F2] at three low latitude stations during low solar activity periods from January 2006 to December 2010. The diurnal, seasonal and day-to-day characteristics of theseionospheric F-region parameters have been studied in detail. With the use of partial correlation analysis we have computed the correlation between the variation of these parameters and other factors such as the solar radio flux 10.7cm (F10.7)and the geomagnetic AP index. It has been observed that the magnitude of the variability of propagation parameter M(3000)F2aresmoother and smaller than in that case of foF2. It is also observed that for both parameters there are no remarkable changes in day-to-day variability with geomagnetic activity during low solar activity.
F-Region, Critical Frequency, IonosphericDisturbances, Variability
To cite this article
Anju Nagar, Satyadeo Mishra, Surendra Kumar Vijay, Day-to-Day Variability of Low Latitude F-Region Ionosphere During Low Solar Activity, International Journal of Astrophysics and Space Science. Vol. 3, No. 3, 2015, pp. 30-41. doi: 10.11648/j.ijass.20150303.12
E.V.Appleton,“Two anomalies in the ionosphere”,Nature, vol. 157, 1946,pp. 691.doi: 10.1038/157691a0.
R.A. Duncan, “The equatorial F-region of the ionosphere”, J Atmos. Terr. Phys., vol. 18, 1960,pp. 89-100.
N.B. HansonandR.J. Moffett, “Ionization transport effects in the equatorial F region”, J. Geophys. Res., vol. 71, 1966, pp. 5559-5572.doi: 10.1029/JZ071i023p05559.
D.N.Anderson,“A theoretical study of the ionospheric F-region equatorial anomaly - I. Theory”, Planet. Space Sci., vol. 21, no. 3, 1973, pp. 409-419.doi: 10.1016/0032-0633 (73)90040-8.
B.O. Adebesin, “ On the ionospheric variability of critical frequency along the equator anomaly trough ad plausible role of vertical EXB drift”, J. Life physical sciences, vol. 5, no. 1, 2014,pp. 37-51.
S.J.Adebiyi,I.A.Adimula, O.A.Oladipo, S.O.Ikubanni, B.O.Adebesin and B.W. Joshua, “GPS derived TEC and foF2 variability at an equatorial station and the performance of IRI model”, Adv. Space Res., vol. 54, no. 4, 2014, pp. 565-575. doi: 10.1016/j.asr.2014.03.026.
D.A. Gnabahou, F.Ouattara, E.Nanema andF.Zougmore, “foF2 diurnal variability at African equatorial stations: Dip equator secular displacement effect”, International Journal of Geosciences, vol. 4, no. 8, 2013, pp. 1145-1150.doi: 10.4236/ijg.2013.48108.
F.Ouattara, D.A.Gnabahou, and A.M. Christine,“Seasonal, diurnal, and solar cycle variations of electron density at two west Africa equatorial ionization anomaly stations”, International Journal of Geophysics, vol. 2012, 640463, 2012.doi: 10.1155/2012/640463.
M.M. Hoqueand A. Jakoswki,“A new global model for the ionospheric F2 peak height for radio wave propagation”, Ann. Geophys., vol. 30, 2012, pp. 797-809.doi:10.5194/angeo-30-797-2012.
R.G.Ezquer, M.Mosert, R.Corbella, M.Erazu, S.M.Radicella, M. Cabrera and L. de la Zorda, “Day to day variability of ionospheric characteristics in the American Sector”, Adv. Space Res. Vol. 34, no. 9, 2004, pp. 1887- 1893.doi: 10.1016/j.asr.2004.03.016.
O.Bilitza, O.K.Obrou, J.O.Adeniyi and O.Oladipo, “Variability of FoF2 in the equatorial ionosphere”, Adv. Space Res., vol. 34, no. 9, 2004, pp. 1901-1906.doi: 10.1016/j.asr.2004.08.004.
N.M. R. Al-Ubdaidi, “Daily mid-latitude F2-region critical frequency foF2 varaition with daily sunspot number R”, Bull Astr. Soc. India, vol. 35, 2007,pp. 639-643.
T.Atac, A.Ozguc, and R.Pektas, “The varaiblity of foF2 in different phases of solar cycle 23”, J. Atmos. Terr. Physics, vol.71, no. 5, 2009, pp. 583-588.doi: 10.1016/j.astp.2009.01.004.
D.S.V.V.D. Prasad, S.N.V.S.Prasad, J.Vara Prasad, N.S.M.P.Lathadeviand P.V.S. Rama Rao, “Diurnal and seasonal variations in h’f and foF2 over low and mid latitude stations - A comparative study”, Indian journal of physics, vol. 84, no. 4, 2010, pp. 345-358.doi: 10.1007/s12648-010-0018-y.
O.S.Oyekola, “Variation in the ionospheric propagating factor M(3000) F2 at Ouagadougou, Burkina Faso”, Adv. Space Res.,vol. 46,no. 1, 2010,pp. 74-80.doi: 10.1016/j.asr.2010.02.017.
H. Chandra, S. Sharma and S.W. Aung, “F-region variability over the anomaly crest region”, Indian Journal of Radio and Space Physics, vol. 39, no. 5, 2010, pp. 302-307.
A.O.Akala, E.O.Oyeymi, E.O.Somoye, A.B.Adeloye and A.O.Adewale, “Variability of foF2 in the African equatorial ionsphere”, Adv. Space Res., vol. 45, no. 11, pp. 1311-1314, 2010.doi: 10.1016/j.asr.2010.01.003.
S.S.Kouris, “The solar cycle variation of M(3000)F2 and its correlation with that of foF2”, Ann. Geophys., vol. 41, no. 4, 1998, pp. 583-590.
H.Risbeth and M.Mendillo, “Patterns of ionosphericvariability”. J. Atmos. Terr. Phys., vol. 63, no. 15, 2001, pp. 1661-1680.doi: 10.1016/s1364-68266(01)00036-0.
S.A.Pulinets, and J.Y. Liu,“lonospheric variability unrelated to solar and geomagnetic activity”, Adv. Space Res., vol. 34, no. 9, 2004, pp. 1926-1933.doi:b10.1016/j.asr.2004.06.014.
M.J. Forbes., E.S.Paol and X. Zhang, “Variability of the ionosphere, J. Atmos. Terr. Phys., vol. 62, no. 8, 2000, pp. 685-693.doi: 10.1016/S1364-6826(00)00029-8.
E.A. Araujo-Pradere, T.J. Fuller Rowell, M.V. Codrescu, and D.Bilitza, “Characteristics of the ionospheric variability as a function of season, latitude, local time, and geomagnetic activity”, Radio Sci., vol.40, no. 5, 2005,pp. RS5009.doi: 10.1029/2004RS003179.
Y.T. Chouand C.C. Lee, “Ionospheric variability at Taiwan low latitude station: Comparison between observations and IRI 2001 model”, Adv. Space Res., vol. 42, no. 18, 2008, pp. 673-681.doi: 10.1016/j.asr.2007.04.078.
A.O.Adewlae, , E.O.Oyeyemi, P.J.Cilliers, L.A.Mckinnell, A.B. Adel, “Low solar activity variability and IRI 2007 predictability equatorial Africa GPS TEC”, Adv. Space Res., vol.49, no. 2, 2012, pp. 316-326.doi: 10.1016/j.asr.2011.09.032.
N.K.Sethi, R.S.Dabas, and V.K. Vohra, “Diurnal and seasonal variations of hmf2 deduced from digital Ionosonde over New Delhi and its comparison with IRI 2001”, Ann. Geophys., vol. 22,no. 2, 2004, pp.453-458.doi: 10.5194/angeo-22-453-2004.
J.R.Dudeney, “The accuracy of simple methods for determining the height of the maximum electron concentration of the F2-layer form scaled ionospheric characteristics”, J. Atmos. Terr. Phys.,vol. 45, pp. 629-640, 1983.doi: 10.1016/S0021-9169(83)80080-4.
D. Bilitza and International Reference Ionosphere National Space Science Data Center, “Report 90-22”, Greenbelt, Maryland, USA, 1990.
W.B. Hanson, and T.N.L. Patterson, “The maintenance of night time F-layer”, Planet. Space Sci., vol. 12, no. 10, 1964,pp. 979-997.doi: 10.1016/0032-0633(64)90112-6.
H. Kohl and J.W. King, “Atmospheric winds between 100 and 700 km and their effects on the ionosphere” J. Atmos. Terr. Phys., vol. 29, no. 9, 1967, pp. 1045-1062.doi: 10.1016/0021-9169(67)90139-0.
H.Risbeth, and O.K.Garriot, “Introduction to ionospheric physics”, 10th ed. Amsterdam: Academic press, 1969, pp. 331.
T. Shimazaki, “Wolrd-wide daily variations in the height of the maximum electron density of the ionospheric F2-layer”, J. Radio Res. Labs., vol. 2, no. 7, 1955,pp. 85-97.
M.R.Torr and D.G.Torr,“The seasonal behaviour of the F2- layer of the ionosphere”,Atmos. Solar-Terr. Phys., vol. 35, no. 12,1973, pp. 2237-2251.
E.N.Bramley and M. Young,“Winds and electromagnetic drifts in equatorial F2-region”, J. Atmos. Terr. Phys., vol.30, 1968, pp. 99-111.
R.J.Stening, “Review Paper: modelling the low latitude F region”, J. Atmos. Terr. Phys., vol. 54, 1992, pp. 1378-1412.
C.C.Wu, C.D. Fry, J.-Y. Liu, K.Liou and C.-L. Tseng, “Annual TEC variation in the equatorial anomaly region during the solar minium: September 1996-August 1997”. J. Atmos. Terr. Phys. Vol. 66, no. 3-4, 2004, pp. 199-207.doi: 10.1016/j.astp.2003.09.017.
C.C. Wu, K.Liou, S.-J. Shan and C.-L. Tseng, “Variaton of ionospheric total electron content in Taiwan region of the equatorial anomaly from 1994 to 2003”. Adv. space Res., vol. 41, no. 4, 2008, pp. 611-616.doi: 10.1016/j.asr.2007.06.013.
P.K.Bhuyan and R.R. Borah, “TEC derived from GPS network in india comparison with the IRI”, Adv. Space Res., vol. 39, no. 5, 2007, pp. 830-840, 2007.doi: 10.1016/j./asr.2006.12.042.
H. Chandra, S. Sharma and S.W. Aung, “Day to day variability in the critical frequency of F2 layer over the anomaly crest region, Ahmedabad”, J. Ind. Geophys.Union, vol. 13, no. 4, 2009, pp. 217-226.
C.T. Russell, and R.L.Mcpherron, “Semiannual variation of geomagnetic activity”, J. Geophys. Res., vol. 78, no. 1, 1973, pp. 92-108.
G.H.Millward, H.Risbeth,T.J. Fuller-Rowell, A.D.Aylward, S.Quegan, and R.J.Moffert, “Ionospheric F2 layer seasonal and semiannual variations”, J. Geophys. Res.,vol. 101, no. A3, 1996, pp. 5149-5156.doi: 10.1029/95JA03343.
J. Mielich and J. Bremer, “A modified index for the description of the ionospheric short and long term activity”, Ann. Geophys., vol. 28, 2010, pp. 2227-2236.doi: 10.5194/angeo-28-2227-2010.
G. Liu, W. Huang, J. Gong and H. Shen, “Seasonal variability of GPS-VTEC and model during low solar activity period (2006-2007) near the equatorial ionization anomaly crest location in Chinese zone”, Adv. Space Res., vol. 51, no.3, 2013,pp. 366-376.doi: 10.1016/j.asr.2012.09.002.
E.Correia, A.J. Paz, and M.A.Gende,“Characterization of GPS total electron content (GPS-TEC) in Antarctica from 2004 to 2011”, Ann. Geophys., vol. 56, no. 2, 2013,pp. RO217.doi: 10.4401/ag-6223
Zhao, B., Wan, W., Liu, L., Mao, T., Ren, Z., Wang, M. and Christensen, A.B., Features of annual and semiannual variations derived from the global inospheric maps of total electron content, Ann. Geophys.,Vol. 25, no. 12, 2008, pp. 2513-2527.
R.S.Dabas, P.K.Bhuyan, T.R. Tyagi, R.K.Bharadwaj, J.B.Lal, “Day to day changes in ionospheric electron content at low latitudes”, Radio Sci., vol. 19, no. 3, 1984,pp.746-749.doi: 10.1029/RS019i003p00749.
P.Aravindan, K.N.Iyer, “Day to day variability in ionospheric electron content at low latitudes”, Planet Space Sci., vol. 38, no. 6,1990, pp. 743-750.doi: 10.1016/0032-0633(90)90033-M.
R.S.Dabas, N. Sharma, M.G.K. Pillai and A.K.Gwal, “Day to day variability of qautorial and low latitude F-region ionosphere in the Indian zone”, J. Atmos. Terr. Phys., vol. 68, no. 11, 2006, pp. 1269-1277.doi: 10.1016/j.astp.2006.03.009.
B.O.Adebesin, J.O.Adeniyi, I.A.Adimula, B.W.Reinisch and Yumoto, K., “F2 layer characteristics and electrojet strength over an equatorial station”, Adv. Space Res., vol.52, no. 5, 2013a, pp. 791-800.doi: 10.1016./j.asr.2013.05.025.
B.O.Adebesin, J.O.Adeniyi, I.A.Adimula, and, B.W.Renisch, “Equatorial vertical plasma drift velocities and electron densities inferred from ground-based ionosonde measurements during low solaractivity”, J. Atmos. Terr. Phys., vol. 97, 2013b, pp. 58-64.doi: 10.1016/j.astp.2013.02.010.
Browse journals by subject