Interplanetary magnetic field at ∼9 AU during the declining phase of the solar cycle and its implications for Saturn's magnetospheric dynamics

Journal of Geophysical Research: Space Physics

Volumn 109, Issue A11, 2004, Pages

  Jackman, C M ^a   Achilleos, N ^b   Bunce, E J ^a   Cowley, S W H ^a   Dougherty, M K ^b   Jones, G H ^c   Milan, S E ^a   Smith, E J ^c  

^a UNIVERSITY OF LEICESTER   (United Kingdom)

^b IMPERIAL COLLEGE LONDON   (United Kingdom)

^c CALIFORNIA INSTITUTE OF TECHNOLOGY   (United States)

Author keywords

Cassini space mission; Interplanetary magnetic field; Reconnection voltage; Saturn's magnetospheric dynamics; Solar wind magnetosphere coupling; Substorms

Indexed keywords

EID: 41849136548     PISSN: None     EISSN: 21699402     Source Type: Journal    
DOI: 10.1029/2004JA010614     Document Type: Article

References (62)

1. Acuña, M. H., K. W. Behannon, and J. E. P. Connerney (1983), Jupiter's magnetic field and magnetosphere, in Physics of the Jovian Magnetosphere, edited by A. J. Dessler, p. 1, Cambridge Univ. Press, New York.
2. Aubry, M. P., and R. L. McPherron (1971), Magnetotail changes in relation to the solar wind magnetic field and magnetospheric substorms, J. Geophys. Res., 76, 4381.
3. Barbosa, D. D. (1987), Titan's atomic nitrogen torus: Inferred properties and consequences for the Saturnian aurora, Icarus, 72, 53.
4. Behannon, K. W., R. P. Lepping, and N. F. Ness (1983), Structure and dynamics of Saturn's outer magnetosphere and boundary regions, J. Geophys. Res., 88, 8791.
5. Boudouridis, A., E. Zesta, R. Lyons, P. C. Anderson, and D. Lummerzheim (2003), Effect of solar wind pressure pulses on the size and strength of the auroral oval, J. Geophys. Res., 108(A4), 8012, doi:10.1029/2002JA009373.
6. Brice, N. M., and G. A. Ioannidis (1970), The magnetospheres of Jupiter and Earth, Icarus, 13, 173.
7. Bunce, E. J., and S. W. H. Cowley (2001), Divergence of the equatorial current in the dawn sector of Jupiter's magnetosphere: Analysis of Pioneer and Voyager magnetic field data, Planet. Space Sci., 49, 1089.
8. Bunce, E. J., S. W. H. Cowley, and T. K. Yeoman (2004), Jovian cusp processes: Implications for the polar aurora, J. Geophys. Res., 109, A09S13, doi: 10.1029/2003JA010280.
9. st, J. Geophys. Res., 80, 4204.
10. Clack, D., R. J. Forsyth, and M. W. Dunlop (2000), Ulysses observations of the magnetic field structure within CIRs, Geophys. Res. Lett., 27, 625.
11. Clarke, J. T., H. W. Moos, S. K. Atreya, and A. L. Lane (1981), IUE detection of bursts of H Ly α emission from Saturn, Nature, 290, 226.
12. Cowley, S. W. H., and E. J. Bunce (2001), Origin of the main auroral oval in Jupiter's coupled magnetosphere-ionosphere system, Planet. Space Sci., 49, 1067.
13. Cowley, S. W. H., and E. J. Bunce (2003a), Modulation of Jovian middle magnetosphere currents and auroral precipitation by solar wind-induced compressions and expansions of the magnetosphere: Initial conditions and steady state, Planet. Space Sci., 51, 31.
14. Cowley, S. W. H., and E. J. Bunce (2003b), Corotation-driven magnetosphere-ionosphere coupling currents in Saturn's magnetosphere and their relation to the auroras, Ann. Geophys., 21, 1691.
15. Cowley, S. W. H., et al. (2003), Solar wind-magnetosphere-ionosphere interactions in the Earth's plasma environment, Philos. Trans. R. Soc. London, Ser. A, 361, 113.
16. Cowley, S. W. H., E. J. Bunce, and R. Prangé (2004a), Saturn's polar ionospheric flows and their relation to the main auroral oval, Ann. Geophys., 22, 1379.
17. Cowley, S. W. H., E. J. Bunce, and J. M. O'Rourke (2004b), A simple quantitative model of plasma flows and currents in Saturn's polar ionosphere, J. Geophys. Res., 109, A05212, doi:10.1029/2003JA010375.
18. Crooker, N. U., et al. (1999), CIR morphology, turbulence, discontinuities, and energetic particles, Space Sci. Rev., 89, 179.
19. Davis, L., Jr., and E. J. Smith (1990), A model of Saturn's magnetic field based on all available data, J. Geophys. Res., 95, 15,257.
20. Delamere, P. A., and F. Bagenal (2003), Modeling variability of plasma conditions in the Io torus, J. Geophys. Res., 108(A7), 1276, doi:10.1029/2002JA009706.
21. Dougherty, M. K., et al. (2004), The Cassini magnetic field investigation, Space Sci. Rev, in press.
22. Dungey, J. W. (1961), Interplanetary field and the auroral zones, Phys. Rev. Lett., 6, 47.
23. Gérard, J.-C., V. Dois, D. Grodent, J. H. Waite, G. R. Gladstone, and R. Prangé (1995), Simultaneous observations of the Saturnian aurora and polar haze with the HST/FOC, Geophys. Res. Lett., 22, 2685.
24. Gérard, J.-C., D. Grodent, J. Gustin, A. Saglam, J. T. Clarke, and J. T. Trauger (2004), Characteristics of Saturn's FUV aurora observed with the Space Telescope Imaging Spectrograph, J. Geophys. Res., 109, A09207, doi:10.1029/2004JA010513.
25. Gosling, J. T. (1996), Corotating and transient solar wind flows in three dimensions, Annu. Rev Astron. Astrophys., 34, 35.
26. Gosling, J. T., and V. J. Pizzo (1999), Formation and evolution of corotating interaction regions and their three dimensional structure, Space Sci. Rev., 89, 21.
27. y-dominated IMF, Ann. Geophys., 21, 509.
28. Grodent, D., J. T. Clarke, J. H. Waite Jr., S. W. H. Cowley, J.-C. Gérard, and J. Kim (2003), Jupiter's polar auroral emissions, J. Geophys. Res., 108(A10), 1366, doi:10.1029/2003JA010017.
29. Grodent, D., J.-C. Gérard, J. T. Clarke, G. R. Gladstone, and J. H. Waite Jr. (2004), A possible auroral signature of a magnetotail reconnection process on Jupiter, J. Geophys. Res., 109, A05201, doi:10.1029/ 2003JA010341.
30. Hill, T. W. (2001), The Jovian auroral oval, J. Geophys. Res., 106, 8101.
31. Hill, T. W., A. J. Dessler, and C. K. Goertz (1983), Magnetospheric models, in Physics of the Jovian Magnetosphere, edited by A. J. Dessler, p. 353, Cambridge Univ. Press, New York.
32. Isbell, J., A. J. Dessler, and J. H. Waite Jr. (1984), Magnetospheric energization by interaction between planetary spin and the solar wind, J. Geophys. Res., 89, 10,716.
33. Jones, G. H., and A. Balogh (2000), Context and heliographic dependence of heliospheric planar magnetic structures, J. Geophys. Res., 105, 12,713.
34. Judge, D. L., F. M. Wu, and R. W. Carlson (1980), Ultraviolet photometer observations of the Saturnian system, Science, 207, 431.
35. Kessel, R. L., S.-H. Chen, J. L. Green, S. F. Fung, S. A. Boardsen, L. C. Tan, T. E. Eastman, J. D. Cravens, and L. A. Frank (1996), Evidence of high-latitude reconnection during northward IMF: Hawkeye observations, Geophys. Res. Lett., 23, 583.
36. Liou, K., P. T. Newell, C.-I. Meng, C.-C. Wu, and R. P. Lepping (1981), Investigation of external triggering of substorms with Polar ultraviolet imager observations, J. Geophys. Res., 108(A10), 1364, doi:10.1029/2003JA009984.
37. Lopez, R. E., D. N. Baker, and J. E. Allen (2004), Sun unleashes Halloween storm, Eos Trans. AGU, 85, 105.
38. McComas, D. J., R. Goldstein, J. T. Gosling, and R. M. Skoug (2001), Ulysses' second orbit: Remarkably different solar wind, Space Sci. Rev, 97, 99.
39. Milan, S. E., M. Lester, S. W. H. Cowley, and M. Brittnacher (2000), Dayside convection and auroral morphology during an interval of northward interplanetary magnetic field, Ann. Geophys., 18, 436.
40. Milan, S. E., M. Lester, S. W. H. Cowley, K. Oksavik, M. Brittnacher, R. A. Greenwald, G. Sofko, and J.-P. Villain (2003), Variations in polar cap area during two substorm cycles, Ann. Geophys., 21, 1121.
41. Milan, S. E., S. W. H. Cowley, M. Lester, D. M. Wright, J. A. Slavin, M. Fillingim, C. W. Carlson, and H. J. Singer (2004), Response of the magnetotail to changes in the open flux content of the maenetosphere, J. Geophys. Res., 109, A04220, doi:10.1029/2003JA010350.
42. Ness, N. F., M. H. Acuña, R. P. Lepping, J. E. P. Connerney, K. W. Behannon, L. F. Burlaga, and F. M. Neubauer (1981), Magnetic field studies by Voyager 1: Preliminary results at Saturn, Science, 212, 211.
43. Nichols, J. D., and S. W. H. Cowley (2004), Magnetosphere-ionosphere coupling currents in Jupiter's middle magnetosphere: Effect of precipitation-induced enhancement of the ionospheric Pedersen conductivity, Ann. Geophys., 22, 1799.
44. Øieroset, M., P. E. Sandholt, W. F. Denig, and S. W. H. Cowley (1997), Northward interplanetary magnetic field cusp aurora and high-latitude magnetopause reconnection, J. Geophys. Res., 102, 1349.
45. Pallier, L., and R. Prangé (2001), More about the structure of the high latitude Jovian aurorae, Planet. Space Sci., 49, 1159.
46. Perrault, P., and S.-I. Akasofu (1978), A study of geomagnetic storms, Geophys. J. R. Astron. Soc., 54, 547.
47. Pelrinec, S. M., and C. T. Russell (1996), Near-Earth magnetotail shape and size as determined from the magnetopause flaring angle, J. Geophys. Res., 101, 137.
48. Pizzo, V. J. (1994a), Global quasi-steady dynamics of the distant solar wind: 1. Origins of north-south flows in the outer heliosphere, J. Geophys. Res., 99, 4173.
49. Pizzo, V. J. (1994b), Global quasi-steady dynamics of the distant solar wind: 2. Deformation of the heliospheric current sheet, J. Geophys. Res., 99, 4185.
50. Pontius, D. H., Jr. (1997), Radial mass transport and rotational dynamics, J. Geophys. Res., 102, 7137.
51. y-dependent plasma flow and Birkeland currents in the dayside magnetosphere: 2. A global model for northward and southward IMF, J. Geophys. Res., 90, 1595.
52. Richardson, J. D. (1986), Thermal ions at Saturn: Plasma parameters and implications, J. Geophys. Res., 91, 1381.
53. Richardson, J. D. (1995), An extended plasma model for Saturn, Geophys. Res. Lett., 22, 1177.
54. Richardson, J. D., A. Eviatar, M. A. McGrath, and V. M. Vasyliunas (1998), OH in Saturn's magnetosphere: Observations and theory, J. Geophys. Res., 103, 20,245.
55. Sandel, B. R., and A. L. Broadfoot (1981), Morphology of Saturn's aurora, Nature, 292, 679.
56. Sandholt, P. E., C. J. Farrugia, J. Moen, and S. W. H. Cowley (1998), Dayside auroral configurations: Responses to southward and northward rotations of the interplanetary magnetic field, J. Geophys. Res., 103, 20,279.
57. Saur, J., B. H. Mauk, A. Kassner, and F. M. Neubauer (2004), A model for the azimuthal plasma velocity in Saturn's magnetosphere, J. Geophys. Res., 109, A05217, doi:10.1029/2003JA010207.
58. Southwood, D. J., and M. G. Kivelson (2001), A new perspective concerning the influence of the soiar wind on Jupiter, J. Geophys. Res., 106, 6123.
59. Stallard, T. S., S. Miller, L. M. Trafton, T. R. Geballe, and R. D. Joseph (2004), Ion winds in Saturn's southern auroral/polar region, Icarus, 167, 204.
60. Trauger, J. T., et al. (1998), Saturn's hydrogen aurora: Wide field and planetary camera: 2. Imaging from the Hubble Space Telescope, J. Geophys. Res., 103, 20,237.
61. Vasyliunas, V. M. (1983), Plasma distribution and flow, in Physics of the Jovian Magnetosphere, edited by A. J. Dessler, p. 395, Cambridge Univ. Press, New York.
62. Zhou, X., and B. T. Tsurutani (2001), Interplanetary shock triggering of nightside geomagnetic activity: Substorms, pseudobreakups, and quiescent events, J. Geophys. Res., 106, 18,957.