Abstract
Small-scale (scales of ∼0.5–256 km) electric fields in the polar cap ionosphere are studied on the basis of measurements of the Dynamics Explorer 2 (DE-2) low-altitude satellite with a polar orbit. Nineteen DE-2 passes through the high-latitude ionosphere from the morning side to the evening side are considered when the IMF z component was southward. A rather extensive polar cap, which could be identified using the ɛ-t spectrograms of precipitating particles with auroral energies, was formed during the analyzed events. It is shown that the logarithmic diagrams (LDs), constructed using the discrete wavelet transform of electric fields in the polar cap, are power law (μ ∼ s α). Here, μ is the variance of the detail coefficients of the signal discrete wavelet transform, s is the wavelet scale, and index α characterizes the LD slope. The probability density functions P(δE, s) of the electric field fluctuations δE observed on different scales s are non-Gaussian and have intensified wings. When the probability density functions are renormalized, that is constructed of δE/s γ, where γ is the scaling exponent, they lie near a single curve, which indicates that the studied fields are statistically self-similar. In spite of the fact that the amplitude of electric fluctuations in the polar cap is much smaller than in the auroral zone, the quantitative characteristics of field scaling in the two regions are similar. Two possible causes of the observed turbulent structure of the electric field in the polar cap are considered: (1) the structure is transferred from the solar wind, which is known to have turbulent properties, and (2) the structure is generated by convection velocity shears in the region of open magnetic field lines. The detected dependence of the characteristic distribution of turbulent electric fields over the polar cap region on IMF B y and the correlation of the rms amplitudes of δE fluctuations with IMF B z and the solar wind transfer function (B y 2 + B z 2)1/2sin(θ/2), where θ is the angle between the geomagnetic field and IMF reconnecting on the dayside magnetopause when IMF B z < 0, together with the absence of dependence on the IMF variability are arguments for the second mechanism.
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References
Abel, G.A., Freeman, M.P., Chisham, G., and Watkins, N.W., Investigating Turbulent Structure of Ionospheric Plasma Velocity Using the Halley SuperDARN Radar, Nonlin. Processes Geophys., 2007, vol. 14, pp. 799–809.
Abel, G.A., Freeman, M.P., and Chisham, G., Spatial Structure of Ionospheric Convection Velocities in Regions of Open and Closed Magnetic Field Topology, Geophys. Res. Lett., 2006, vol. 33, GL027919.
Abry, P., Flandrin, P., Taqqu, M.S., and Veitch, D., Wavelets for the Analysis, Estimation and Synthesis of Scaling Data, in Self-Similar Network Traffic and Performance Evaluation, Park, K. and Willinger, W., Eds., Hoboken: Wiley-Interscience, 2000, p. 39.
Antonova, E.E. and Ovchinnikov, I.L., Magnetostatically Equilibrated Plasma Sheet with Developed Medium-Scale Turbulence: Structure and Implications for Substorm Dynamics, J. Geophys. Res., 1999, vol. 104, pp. 17289–17297.
Antonova, E.E., Magnetostatic Equilibrium and Turbulent Transport in Earth’s Magnetosphere: A Review of Experimental Observation Data and Theoretical Approach, Int. J. Geomagn. Aeron., 2002, vol. 3, no. 2, pp. 117–130.
Basu, S., MacKenzie, E., Fougere, P.F., Coley, W.R., Maynard, N.C., Winningham, J.D., Sugiura, M., Hanson, W.B., and Hoegy, W.R., Simultaneous Density and Electric Field Fluctuation Spectra Associated with Velocity Shears in the Auroral Oval, J. Geophys. Res., 1988, vol. 93A, pp. 115–136.
Belenkaya, E.S., Vliyanie mezhplanetnogo magnitnogo polya na formirovanie magnitosfery (Effect of the Interplanetary Magnetic Field on the Formation of the Magnetosphere), Moscow: VINITI, 2002.
Borovsky, J.E. and Funsten, H.O., MHD Turbulence in the Earth’s Plasma Sheet: Dynamics, Dissipation, and Driving, J. Geophys. Res., 2003, vol. 108, JA009625.
Chang, T., Tam, S.W.Y., and Wu, C.C., Complexity Induced Anisotropic Bimodal Intermittent Turbulence in Space Plasma, Phys. Plasmas, 2004, vol. 11, pp. 1287–1299.
Chisham, G. and Freeman, M.P., An Investigation of Latitudinal Transitions in the SuperDARN Doppler Spectral Width Parameter at Different Magnetic Local Times, Ann. Geophys., 2004, vol. 22, pp. 1187–1202.
Dubinin, E.M., Volokitin, A.S., Israilevich, P.L., and Nikolaeva, N.S., Auroral Electromagnetic Disturbances at Altitudes of 900 km: Alfvén Wave Turbulence, Planet. Space Sci., 1988, vol. 36, no. A10, pp. 949–962.
Earle, G.D. and Kelley, M.C., Spectral Evidence for Stirring Scales and Two-Dimensional Turbulence in the Auroral Ionosphere, J. Geophys. Res., 1993, vol. 98, no. 7, p. 11543–11548.
Efron, B., The Jackknife, the Bootstrap, and Other Resampling Plans, in Society for Industrial and Applied Mathematics, Philadelphia, 1982.
Frisch, U., Turbulence: The Legacy of A.N. Kolmogorov, New York: Cambridge Univ. Press, 1995.
Goldstein, M.L. and Roberts, D.A., Magnetohydrodynamic Turbulence in the Solar Wind, Phys. Plasma, 1999, vol. 6, no. 11, pp. 4154–4160.
Golovchanskaya, I.V., Kozelov, B.V., Sergienko, T.I., Brändström, U., Nilsson, H., and Sandahl, I., Scaling Behavior of Auroral Luminosity Fluctuations Observed by Auroral Large Imaging System (ALIS), J. Geophys. Res., 2008, vol. 113, A10303.
Golovchanskaya, I.V., Ostapenko, A.A., and Kozelov, B.V., Relationship between the High-Latitude Electric and Magnetic Turbulence and the Birkeland Field-Aligned Currents, J. Geophys. Res., 2006, vol. 111, A12301.
Gonzales, W.D. and Mozer, F.S., A Quantitative Model for the Potential Resulting from Reconnection with an Arbitrary Interplanetary Magnetic Field, J. Geophys. Res., 1974, vol. 79, no. 28, pp. 4186–4194.
Heppner, J.P., Liebrecht, M.C., Maynard, N.C., and Pfaff, R.F., High-Latitude Distributions of Plasma Waves and Spatial Irregularities from DE-2 Alternating Current Electric Field Observations, J. Geophys. Res., 1993, vol. 98, pp. 1629–1652.
Hnat, B., Chapman, S.C., and Rowlands, G., Scaling and a Fokker-Plank Model for Fluctuations in Geomagnetic Indices and Comparison with Solar Wind as Seen by Wind and ACE, J. Geophys. Res., 2005, vol. 110, A08206.
Kintner, P.M. and Seyler, C.E., The Status of Observation and Theory of High Latitude Ionospheric and Magnetospheric Plasma Turbulence, Space Sci. Rev., 1985, vol. 41, pp. 91–128.
Kintner, P.M., Jr., Observations of Velocity Shear Driven Plasma Turbulence, J. Geophys. Res., 1976, vol. 81, pp. 5114–5122.
Knudsen, D.J., Kelley, M.C., Earle, G.D., Vickrey, J.F., and Boehm, M., Distinguishing Alfvén Waves from Quasi-Static Field Structures Associated with the Discrete Aurora: Sounding Rocket and HILAT Satellite Measurements, Geophys. Res. Lett., 1990, vol. 17, pp. 921–924.
Kolmogorov, A.N., Dissipation of Energy in locally Isotropic Turbulence, Dokl. Akad. Nauk SSSR, 1941, vol. 32, pp. 16–18 (reprinted in Proc. R. Soc. London, 1991, vol. A434, pp. 15–17.)
Kozelov, B.V. and Golovchanskaya, I.V., Derivation of Aurora Scaling Parameters from Ground-Based Imaging Observations: Numerical Tests, J. Geophys. Res., 2010, vol. 115, A02204.
Kozelov, B.V. and Golovchanskaya, I.V., Scaling of Electric Field Fluctuations Associated with the Aurora during Northward IMF, Geophys. Res. Lett., 2006, vol. 33, L20109.
Kozelov, B.V., Golovchanskaya, I.V., Ostapenko, A.A., and Fedorenko, Y.V., Wavelet Analysis of High-Latitude Electric and Magnetic Fluctuations Observed by the Dynamic Explorer 2 Satellite, J. Geophys. Res., 2008, vol. 113, A03308.
Kraichnan, R.H., Inertial Ranges in Two-Dimensional Turbulence, Phys. Fluids, 1967, vol. 10, p. 1417.
Maynard, N.C., Bielecki, E.A., and Burdick, H.F., Instrumentation for Vector Electric Field Measurements from DE-B, Space Sci. Instr., 1981, vol. 5, pp. 523–534.
Mozer, F.S. and Serlin, R., Magnetospheric Electric Field Measurements with Balloons, J. Geophys. Res., 1969, vol. 74, pp. 4739–4754.
Mozer, F.S., Power Spectra of the Magnetospheric Electric Field, J. Geophys. Res., 1971, vol. 76, pp. 3651–3667.
Pokhotelov, O.A., Onishchenko, O.G., Sagdeev, R.Z., and Treumann, R.A., Nonlinear Dynamics of Inertial Alfvén Waves in the Upper Ionosphere: Parametric Generation of Electrostatic Convective Cells, J. Geophys. Res., 2003, vol. 108A, p. 1291.
Potemra, T.A., Sources of Large-Scale Birkeland Currents, in Physical Signatures of Magnetospheric Boundary Layer Processes, Holtet, J.A. and Egeland, A., Eds., 1994, pp. 3–27.
Rossolenko, S.S., Antonova, E.E., Ermolaev, Yu.I., Verigin, M.I., Kirpichev, I.P., and Borodkova, N.L., Turbulent Fluctuations of Plasma and Magnetic Field Parameters in the Magnetosheath and Formation of the Low-Latitude Boundary Layer: Multisatellite Observations on March 2, 1996, Kosm. Issled., 2008, vol. 46, no. 5, pp. 387–397.
Sabatini, A.M., Wavelet-Based Estimation of 1/f-Type Signal Parameters: Confidence Intervals Using the Bootstrap, IEEE Trans. Signal Proc., 1999, vol. 47, no. 12, pp. 3406–3409.
Stepanova, M.V., Antonova, E.E., and Troshichev, O., Intermittency of Magnetospheric Dynamics through Non-Gaussian Distribution Function of PC-Index Fluctuations, Geophys. Res. Lett., 2003, vol. 30, no. 3, p. 1127.
Sugiura, M., Maynard, N.C., Farthing, W.H., Heppner, J.P., Ledley, B.G., and Cahill, Jr. L.G., Initial Results on the Correlation between the Magnetic and Electric Fields Observed from the DE-2 Satellite in the Field-Aligned Current Regions, Geophys. Res. Lett., 1982, vol. 9, no. 9, pp. 985–988.
Tam, S., Chang, W.Y., Kintner, P.M., and Klatt, E., Intermittency Analyses on the SIERRA Measurements of the Electric Field Fluctuations in the Auroral Zone, Geophys. Res. Lett., 2005, vol. 32, L05109.
Temerin, M., The Polarization, Frequency, and Wave-lengths of High-Latitude Turbulence, J. Geophys. Res., 1978, vol. 83, no. 6, pp. 2609–2616.
Volokitin, A.S. and Dubinin, E.M., The Turbulence of Alfvén Waves in the Polar Magnetosphere of the Earth, Planet. Space Sci., 1989, vol. 37, no. 7, pp. 761–765.
Vörös, Z., et al., Magnetic Turbulence in the Plasma Sheet, J. Geophys. Res., 2004, vol. 109, A11215.
Watanabe, M., Constitution of Dayside Field-Aligned Current Systems, Int. J. Geomagn. Aeron., 2000, vol. 2, no. 1, pp. 1–10.
Watanabe, M., Iijima, T., and Rich, F.J., Synthetic Models of Dayside Field-Aligned Currents for Strong Interplanetary Magnetic Field By, J. Geophys. Res., 1996, vol. 101, no. 6, p. 13 303.
Weimer, D.R., Goertz, C.K., and Gurnett, D.A., Auroral Zone Electric Fields from DE 1 and 2 at Magnetic Conjunctions, J. Geophys. Res., 1985, vol. 90A, pp. 7479–7494.
Wendt, H., Abry, P., and Jaffard, S., Bootstrap for Empirical Multifractal Analysis, IEEE Signal Proc. Mag. July, 2007, pp. 38–48.
Winningham, J.D., Burch, J.L., Eaker, N., Blevins, V.A., and Hoffman, R.A., The Low Altitude Plasma Instrument (LAPI), Space Sci. Instrum., 1981, vol. 5, pp. 465–475.
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Original Russian Text © I.V. Golovchanskaya, B.V. Kozelov, 2010, published in Geomagnetizm i Aeronomiya, 2010, Vol. 50, No. 5, pp. 603–615.
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Golovchanskaya, I.V., Kozelov, B.V. Properties of electric turbulence in the polar cap ionosphere. Geomagn. Aeron. 50, 576–587 (2010). https://doi.org/10.1134/S001679321005004X
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DOI: https://doi.org/10.1134/S001679321005004X