Abstract
The ion pressure in the regions of ionospheric projections of the plasma mantle, polar cusp, low-latitude boundary layer, and the region of structured precipitation of the auroral oval during magnetic calm is studied based on data from the DMSP F6 and F7 low-altitude spacecraft. It is shown that the level of ion pressure in all of these regions does not depend on either the polarity or the value of the Bz component of the IMF. The ion pressure in the mantle varies from 0.02 to 0.06 nPa and does not depend on the magnitude of the solar wind dynamic pressure. The average pressure level is \(\left\langle {Pm} \right\rangle \) = 0.03 ± 0.01 nPa. In the cusp area at IMF Bz > 0, the ion pressure (Pc) does not depend on the solar wind dynamic pressure (Psw), while the pressure at IMF Bz < 0 increases significantly with the increasing in Psw. The average pressure level is \(\left\langle {Pc} \right\rangle \) = 1.0 ± 0.3 nPa, which is almost two orders of magnitude higher than that in the mantle. The ion pressure also increases with the solar wind dynamic pressure in both the LLBL and the auroral oval precipitation (AOP). The average pressure in the LLBL is \(\left\langle {{{P}_{L}}} \right\rangle \) = 0.27 ± 0.07 nPa, while in the AOP region its average value is two times lower. The MLT pressure pattern in LLBL shows a pronounced increase in the noon sector (~11–14 MLT), the value of which increases with increasing in the solar wind dynamic pressure. In the AOP region the pressure is distributed over MLT fairly evenly, which results in a significant pressure difference (ΔP = PL – PA) in the noon sector between the low-latitude boundary layer and the auroral oval.
Similar content being viewed by others
REFERENCES
Antonova, E.E. and Ganushkina, N.Y., Azimuthal hot plasma pressure gradients and dawn-dusk electric field formation, J. Atmos. Sol.-Terr. Phys., 1997, vol. 59, pp. 1343–1354. https://doi.org/10.1016/S1364-6826(96)00169-1
Antonova, E.E., Kirpichev, I.P., Vovchenko, V.V., Stepanova, M.V., Riazantsev, M.O., Pulinets, M.S., Ovchinnikov, I.L., and Znatkova, S.S., Characteristics of plasma ring, surrounding the earth at geocentric distances ~7–10RE, and magnetospheric current systems, J. Atmos. Sol.-Terr. Phys., 2013, vol. 99, pp. 85–91. https://doi.org/10.1016/j.jastp.2012.08.01
Antonova, E.E., Vorobjev, V.G., Kirpichev, I.P., and Yagodkina, O.I., Comparison of the plasma pressure distributions over the equatorial plane and at low altitudes under magnetically quiet conditions, Geomagn. Aeron. (Engl. Transl.), 2014a, vol. 54, no. 3, pp. 278–281. https://doi.org/10.7868/S001679401403002X
Antonova, E.E., Kirpichev, I.P., and Stepanova, M.V., Plasma pressure distribution in the surrounding the Earth’s plasma ring and its role in the magnetospheric dynamics, J. Atmos. Sol.-Terr. Phys., 2014b, vol. 115, pp. 32–40. https://doi.org/10.1016/j.jastp.2013.12.005
Antonova, E.E., Stepanova, M., Kirpichev, I.P., Ovchinnikov, I.L., Vorobjev, V.G., Yagodkina, O.I., Riazanseva, M.O., Vovchenko, V.V., Pulinets, M.S., Znatkova, S.S., and Sotnikov, N.V., Structure of magnetospheric current systems and mapping of high latitude magnetospheric regions to the ionosphere, J. Atmos. Sol.-Terr. Phys., 2018, vol. 177, pp. 103–114. https://doi.org/10.1016/j.jastp.2017.10.013
Artsimovich, L.A. and Sagdeev, R.Z., Fizika plazmy dlya fizikov (Plasma Physics for Physicists), Moscow: Atomizdat, 1979.
Burch, J.L., Rate of erosion of dayside magnetic flux based on a quantitative study of the dependence of polar cusp latitude on the interplanetary magnetic field, Radio Sci., 1973, vol. 8, pp. 955–961.
Fairfield, D.H., Average magnetic field configuration of the outer magnetosphere, J. Geophys. Res., 1968, vol. 73, pp. 7329–7338.
Goertz, C.K. and Baumjohann, W., On the thermodynamics of the plasma sheet, J. Geophys. Res., 1991, vol. 96, no. A12, pp. 20991–20998. https://doi.org/10.1029/91JA02128
Gosling, J.T., Thomsen, M.F., Bame, J., Elphic, R.C., and Russel, C.T., Observations of reconnection of interplanetary and lobe magnetic field lines at the high-latitude magnetopause, J. Geophys. Res., 1991, vol. 96, no. A8, pp. 14097–14106. https://doi.org/10.1029/91JA01139
Haerendel, G., Paschmann, G., Sckopke, N., Rosenbauer, H., and Hedgecock, P.C., The frontside boundary layer of the magnetosphere and problem of reconnection, J. Geophys. Res., 1978, vol. 83, no. A7, pp. 3195–3216. https://doi.org/10.1029/JA083Ia07P03195
Horwitz, J.L. and Akasofu, S.I., The response of the dayside aurora to sharp northward and southward transition of the interplanetary magnetic field and to magnetospheric substorm, J. Geophys. Res., 1977, vol. 82, no. 19, pp. 2723–2734. https://doi.org/10.1029/JA082i019p02723
Kirpichev, I.P. and Antonova, E.E., Plasma pressure distribution in the equatorial plane of the Earth’s magnetosphere at geocentric distances of 6–10 R E according to the international THEMIS mission data, Geomagn. Aeron. (Engl. Transl.), 2011, vol. 51, no. 4, pp. 450–455.
Kirpichev, I.P., Yagodkina, O.I., Vorobjev, V.G., and Antonova, E.E., Position of projections of the nightside auroral oval equatorward and poleward edges in the magnetosphere equatorial plane, Geomagn. Aeron. (Engl. Transl.), 2016, vol. 56, no. 4, pp. 407–414. https://doi.org/10.7868/S0016794016040064
Lemaire, J., Impulsive penetration of filamentary plasma elements into the magnetospheres of the Earth and Jupiter, Planet. Space Sci., 1977, vol. 25, no. 9, pp. 877–890. https://doi.org/10.1016/0032-0633(77)90042-3
Newell, P.T. and Meng, C.-I., Ionospheric projections of magnetospheric regions under low and high solar wind pressure conditions, J. Geophys. Res., 1994, vol. 99, no. A1, pp. 273–286. https://doi.org/10.1029/93JA02273
Newell, P.T., Meng, C.-I., Sibeck, D.G., and Lepping, R., Some low-altitude cusp dependence on interplanetary magnetic field, J. Geophys. Res., 1989, vol. 94, pp. 8921–8927. https://doi.org/10.1029/JA094iA07p08921
Newell, P.T., Wing, S., Meng, C.-I., and Sigillito, V., The auroral oval position, structure, and intensity of precipitation from 1984 onward—An automated on-line database, J. Geophys. Res., 1991a, vol. 96, no. A4, pp. 5877–5882. https://doi.org/10.1029/90JA02450
Newell, P.T., Burke, W.J., Meng, C.-I., Sanchez, E.R., and Greenspan, M.E., Identification and observations of the plasma mantle at low altitude, J. Geophys. Res., 1991b, vol. 96, no. A1, pp. 35–45. https://doi.org/10.1029/90JA01760
Newell, P.T., Burke, W.J., Sanchez, E.R., Meng, C.-I., Greenspan, M.E., and Clauer, C.R., The low-latitude boundary layer and the boundary plasma sheet at low altitude: Prenoon precipitation regions and convection reversal boundaries, J. Geophys. Res., 1991c, vol. 96, no. A12, pp. 21013–21023. https://doi.org/10.1029/91JA01818
Panov, E.V., Büchner, J., Fränz, M., Korth, A., Savin, S.P., Rème, H., and Fornaçon, K.-H., High-latitude Earth’s magnetopause outside the cusp: Cluster observations, J. Geophys. Res., 2008, vol. 113, A01220. https://doi.org/10.1029/2006JA012123
Pulinets, M.S., Kirpichev, I.P., and Antonova, E.E., Variations in plasma parameters and magnetic field upon magnetopause crossing at the main phase maximum of the magnetic storm of November 14, 2012, Geomagn. Aeron. (Engl. Transl.), 2016, vol. 56, no. 6, pp. 673–681. https://doi.org/10.7868/S0016794016060134
Rossolenko, S.S., Antonova, E.E., Yermolaev, Yu.I., Verigin, M.I., Kirpichev, I.P., Borodkova, N.L., and Budnik, E.Yu., Magnetosheath turbulence and low latitude boundary layer (LLBL) formation, in Proc. XXX Annual Seminar “Physics of Auroral Phenomena”, Apatity, 2007, pp. 81–84.
Rossolenko, S.S., Antonova, E.E., Yermolaev, Yu.I., et al., Turbulent fluctuations of plasma and magnetic field parameters in the magnetosheath and the low-latitude boundary layer formation: Multisatellite observations on March 2, 1996, Cosmic Res., 2008, vol. 46, no. 5, pp. 373–382.
Roth, M., On impulsive penetration of solar wind plasmoids into the geomagnetic field, Planet. Space Sci., 1992, vol. 40, nos. 2–3, pp. 193–201. https://doi.org/10.1016/0032-0633(92)90057-U
Sandholt, P.E., Egeland, A., Deehr, C.S., Sivjee, G.G., and Romick, G.J., Effect of interplanetary magnetic field and magnetospheric substorm variations on the dayside aurora, Planet. Space Sci., 1983, vol. 31, no. 11, pp. 1345–1362. https://doi.org/10.1061/0032-0633(83)90071-5
Starkov, G.V., Rezhenov, B.V., Vorobjev, V.G., and Feldshtein, Ya.I., Planetary distribution of auroral precipitation and its relation to the zones of auroral luminosity, Geomagn. Aeron. (Engl. Transl.), 2003, vol. 43, no. 5, pp. 569–578.
Stepanova, M.V., Antonova, E.E., Bosqued, J.M., Kovrazhkin, R.A., and Aubel, K.R., Asymmetry of auroral electron precipitations and its relationship to the substorm expansion phase onset, J. Geophys. Res., 2002, vol. 107, no. A7. https://doi.org/10.1029/2001JA003503
Stepanova, M., Antonova, E.E., and Bosqued, J.-M., Study of plasma pressure distribution in the inner magnetosphere using low-altitude satellites and its importance for the large-scale magnetospheric dynamics, Adv. Space Res., 2006, vol. 38, no. 8, pp. 1631–1636. https://doi.org/10.1016/j.asr.2006.05.013
Troshichev, O.A., Plasma pressure and fid-aligned currents in the magnetosphere, Adv. Space Res., 2004, vol. 33, pp. 729–736. https://doi.org/10.1016/S0273-1177(03)00637-9
Tsyganenko, N.A. and Mukai, T., Tail plasma sheet models derived from Geotail particle data, J. Geophys. Res., 2003, vol. 108, no. A3, 1136. https://doi.org/10.1029/2002JA009707
Vorobjev, V.G. and Yagodkina, O.I., Influence of the solar wind plasma density on the auroral precipitation characteristics, Geomagn. Aeron. (Engl. Transl.), 2006, vol. 46, no. 1, pp. 52–57.
Vorobjev, V.G., Starkov, G.V., and Fe1dstein, Ya.I., The auroral oval during the substorm development, Planet. Space Sci., 1976, vol. 24, pp. 955–965.
Vorobjev, V.G., Yagodkina, O.I., and Katkalov, Y., Auroral precipitation model and its applications to ionospheric and magnetospheric studies, J. Atmos. Sol.-Terr. Phys., 2013, vol. 102, pp. 157–171. https://doi.org/10.1016/j.jastp.2013.05.007
Vorobjev, V.G., Yagodkina, O.I., and Antonova, E.E., Ion pressure at the auroral precipitation boundaries and its relationship with the solar wind dynamic pressure, Geomagn. Aeron. (Engl. Transl.), 2019, vol. 59, no. 5, pp. 543–554. https://doi.org/10.1134/S0016794019050146
Wing, S. and Newell, P.T., Center plasma sheet ion properties as inferred from ionospheric observations, J. Geophys. Res., 1998, vol. 103, no. A4, pp. 6785–6800. https://doi.org/10.1029/97JA02994
Xing, X., Lyons, L.R., Angelopoulos, V., Larson, D., McFadden, J., Carlson, C., Runov, A., and Auster, U., Azimuthal plasma pressure gradient in quiet time plasma sheet, Geophys. Res. Lett., 2009, vol. 36, L14105. https://doi.org/10.1029/2009GL038881
Znatkova, S.S., Antonova, E.E., Zastenker, G.N., and Kirpichev, I.P., Pressure balance on the magnetopause near the subsolar point according to observational data of the THEMIS project satellites, Cosmic Res., 2011, vol. 49, no. 1, pp. 3–20.
ACKNOWLEDGMENTS
The data from DMSP satellites were taken from (http://sd-www.jhuapl.edu). The IMF parameters and solar-wind plasma and magnetic activity indices were taken from (http://wdc.kugi.kyoto-u.ac.jp/) and (http://cdaweb. gsfc.nasa.gov/).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated by M. Hannibal
Rights and permissions
About this article
Cite this article
Vorobjev, V.G., Yagodkina, O.I. & Antonova, E.E. Ion Pressure in Different Regions of the Dayside Auroral Precipitation. Geomagn. Aeron. 60, 727–736 (2020). https://doi.org/10.1134/S0016793220060146
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0016793220060146