Statistical characteristics of the day-to-day variability in the geomagnetic Sq field

Journal of Geophysical Research: Space Physics

Volumn 112, Issue 6, 2007, Pages

  Chen, Gen Xiong ^a   Xu, Wen Yao ^a   Du, Ai Min ^a   Wu, Ying Yan ^a   Chen, Bo ^a   Liu, Xiao Can ^a  

^a INSTITUTE OF GEOLOGY AND GEOPHYSICS   (China)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 34548300042     PISSN: None     EISSN: 21699402     Source Type: Journal    
DOI: 10.1029/2006JA012059     Document Type: Article

References (44)

1. Blanc, M., and A. D. Richmond (1980), The ionospheric disturbance dynamo, J. Geophys. Res., 85, 1669-1686.
2. Brown, G. M., and W. R. Williams (1969), Some properties of the day-to-day variability of Sq(H), Planet Space Sci., 17(3), 455-470.
3. Butcher, E. C., and G. M. Brown (1981), The variability of Sq(H) normal quiet days, Geophys. J. R. Astron. Soc., 64, 527-537.
4. Campbell, W. (1989), The regular geomagnetic-field variations during quiet solar conditions, in Geomagnetism, edited by J. A. Jacobs, vol. 3, pp. 385-460, Elsevier, New York.
5. Campbell, W. (1997), Introduction to Geomagnetic Fields, Cambridge Univ. Press, New York.
6. Chapman, S., and J. Bartels (1940), Geomagnetism, Oxford Univ. Press, New York.
7. Faynberg, E. B. (1975), Separation of the geomagnetic field into a normal and anomalous part, Geomagn. Aeron., 15, 117-121.
8. Golovkov, V. P., and T. I. Zvereva (2000), The space-time pattern of midlatitude geomagnetic variations, Geomagn. Aeron., 40, 84-92.
9. Golovkov, V. P., N. E. Papitashvili, Y. S. Tyupkin, and E. P. Kharin (1978), Separation of geomagnetic field variations into quiet and disturbed components by the method of natural orthogonal components, Geomagn. Aeron., 18, 342-344.
10. Golovkov, V. P., K. G. Kozhoyeva, and S. I. Shkolnokova (1992), The use of the method of natural orthogonal components for separation of partially nonorthogonal variations of the geomagnetic field, Geomagn. Aeron., 32, 715-717.
11. Gupta, J. C., and S. R. C. Malin (1972), Seasonal variations in the solar and lunar daily geomagnetic variations, Geophys. J. R. Astron. Soc., 30, 11-18.
12. Hasegawa, M. (1960), Geomagnetic Sq current system, J. Geophys. Res., 65, 1437-1447.
13. Hibberd, F. H. (1981), Day-to-day variability of the Sq geomagnetic field variation, Aust J. Phys., 34, 81-90.
14. Kirchhoff, V. W. J. H., and L. A. Carpenter (1976), The day-to-day variability in ionospheric fields and currents, J. Geophys. Res., 81, 2737-2742.
15. Malin, S. R. C. (1973), Worldwide distribution of geomagnetic tides, Philos. Trans. R. Soc. London, 274, 551-594.
16. Matsushita, S. (1967), Solar quiet and lunar daily variation fields, in Physics of Geomagnetic Phenomena, edited by S. Matsushita and W. Campbell, pp. 301-424, Elsevier, New York.
17. Matsushita, S. (1975), IMF polarity effects on the Sq current focus location, J. Geophys. Res., 80, 4751-4754.
18. Matsushita, S., and W.-Y. Xu (1982), Equivalent ionospheric current systems representing solar daily variations of the polar geomagnetic field, J. Geophys. Res., 87, 8241-8254.
19. Matsushita, M., J. D. Tarpley, and W. H. Campbell (1973), IMF sector structure effects on the quiet geomagnetic field, Radio Sci., 8, 963-972.
20. Mayaud, P. N. (1965), Analyse morphologique de la variabilite jour-a-jour de la variation journaliere "reguliere" Sr du champ magnetique terrestre, 2. Le systeme de courants Cm (Regions non-polaires), Ann. Geophys., 21, 514-544.
21. Miyaharas, M., and M. Ooishi (1997), Variation of Sq induced by atmospheric tides simulated by a Middle Atmosphere General Circulation Model, J. Geomagn. Geoelectr., 49, 77-87.
22. Okeke, F. N., and C. A. Onwumechili (1997), Preliminary analysis of geomagnetic day to day variations in the equatorial zone, J. Geomagn. Geoelectr., 49(1), 77-87.
23. Olson, W. P. (1984), Introduction to the topology of magnetospheric current system, in Magnetospheric Current, edited by T. A. Potemra, pp. 49-66, AGU, Washington, D. C.
24. Palumbo, A. (1981), Lunar and solar daily variations of the geomagnetic field at Italian stations, J. Atmos. Terr. Phys., 43, 633-642.
25. Rajaram, M. (1980), Method of natural orthogonal components applied to equatorial geomagnetic variations, Ann. Geophys., 36, 599-603.
26. Rajaram, M. (1983), Determination of the latitude of Sq focus and its relation to electrojet variations, J. Atmos. Terr. Phys., 45, 573-578.
27. Rotanova, N. M., N. E. Papitashvili, and A. N. Pushkov (1982), Use of natural orthogonal components to distinguish and analyze the 60-yr geomagnetic field variations, Geomagn. Aeron., 22, 821-825.
28. Schlapp, D. M., and E. C. Butcher (1995), Seasonal and sunspot-cycle changes in the day-to-day variability of Sq, Geophys. J. Int., 120, 173-185.
29. Stening, R., T. Reztsova, D. Ivers, and D. Winch (2005a), A critique of method of determining the position of the focus of the Sq current system, J. Geophys. Res., 110, A04305, doi:10.1029/2005JA011219.
30. Stening, R., T. Reztsova, Minh, and Le Huy (2005b), Day-to-day changes in the latitudes of the foci of the Sq current system and their relation to equatorial electrojet strength, J. Geophys. Res., 110, A10308, doi:10.1029/2005JA011219.
31. Sun, W., W.-Y. Xu, and S.-I. Akasofu (1998), Mathematical separation of directly driven and unloading components in the ionospheric equivalent currents during substorms, J. Geophys. Res., 103, 11695-11700.
32. Sun, W., W.-Y. Xu, and S.-I. Akasofu (2000), An improved method to deduce the unloading component for magnetospheric substorms, J. Geophys. Res., 105, 13,131-13,140.
33. Suzuki, A., and H. Maeda (1978), Equivalent current systems of the daily geomagnetic variations in December 1964, Data Book No. 1, World Data Center C2 for Geomagnetic.
34. Takeda, M. (1984), Day-to-day variation of equivalent current system during March 11-16, 1970, J. Geomagn. Geoelectr., 36, 215-228.
35. Takeda, M. (1999), Time variation of geomagnetic Sq field in 1964 and 1980, J. Atmos. Sol.-Terr. Phys., 61(17), 1321-1322.
36. Torta, J. M., J. J. Curto, and P. Bencze (1997), Behavior of the quiet day ionospheric current system in the European region, J. Geophys. Res., 102, 2483-2494.
37. Winch, D. E. (1981), Spherical harmonic analysis of geomagnetic tides, 1964-1965, Philos. Trans. R. Soc. London, Ser. A, 303, 1-104.
38. Xu, W.-Y. (1990), Stability of the spatial structure of the large scale ionospheric current system at middle and low latitudes, Chin. J. Geophys., 33(4), 425-432.
39. Xu, W.-Y. (1992), Effects of the magnetospheric currents on the Sq field and a new magnetic index characterizing Sq dynamo current intensity, J. Geomagn. Geoelectr., 44(3), 449-458.
40. Xu, W.-Y. (1998), Eigen mode analysis of the Earth's main magnetic field during 1900-2000, Chin. J. Geophys., 41, 1-9.
41. Xu, W.-Y. (2002), Normalization of sunspot cycles and Eigen mode analysis, Sci. China, Ser. A: Math, Phys., Astron., 45(Supp,), 4-11.
42. Xu, W.-Y., and Y. Kamide (2004), Decomposition of daily geomagnetic variation by using method of natural orthogonal component, J. Geophys. Res., 109(A5), A05218, doi:10.1029/2003JA010216.
43. Xu, W.-Y., and W.-D. Li (1993), UT-variability of the Sq dynamo current and its ground magnetic field reconstruction, Chin. J. Geophys., 36(3), 305-316.
44. Xu, W.-Y., and W.-D. Li (1994), Anomalous characteristics of Sq in east Asia, Chin. J. Space Sci., 15(2), 134-143.