Van Allen Probe observations of drift-bounce resonances with Pc 4 pulsations and wave–particle interactions in the pre-midnight inner magnetosphere
-
Published:2015-08-05
Issue:8
Volume:33
Page:955-964
-
ISSN:1432-0576
-
Container-title:Annales Geophysicae
-
language:en
-
Short-container-title:Ann. Geophys.
Author:
Korotova G. I.ORCID, Sibeck D. G., Tahakashi K.ORCID, Dai L., Spence H. E.ORCID, Kletzing C. A., Wygant J. R., Manweiler J. W., Moya P. S., Hwang K.-J.ORCID, Redmon R. J.
Abstract
Abstract. We present Van Allen Probe B observations of azimuthally limited, antisymmetric, poloidal Pc 4 electric and magnetic field pulsations in the pre-midnight sector of the magnetosphere from 05:40 to 06:00 UT on 1 May 2013. Oscillation periods were similar for the magnetic and electric fields and proton fluxes. The flux of energetic protons exhibited an energy-dependent response to the pulsations. Energetic proton variations were anticorrelated at medium and low energies. Although we attribute the pulsations to a drift-bounce resonance, we demonstrate that the energy-dependent response of the ion fluxes results from pulsation-associated velocities sweeping energy-dependent radial ion flux gradients back and forth past the spacecraft.
Publisher
Copernicus GmbH
Subject
Space and Planetary Science,Earth and Planetary Sciences (miscellaneous),Atmospheric Science,Geology,Astronomy and Astrophysics
Reference45 articles.
1. Anderson, B. J., Engebretson, M. J., Rounds, S. P., Zanetti, L. J., and Potemra, T. A.: A statistical study of Pc 3–5 pulsations observed by the AMPTE/CCE Magnetic Fields Experiment, 1. Occurrence distributions, J. Geophys. Res., 95, 10495–10523, 1990. 2. Arthur, C. W. and McPherron, R. L.: The statistical character of Pc 4 magnetic pulsations at synchronous orbit, J. Geophys. Res., 86, 1325–1334, https://doi.org/10.1029/JA086iA03p01325, 1981. 3. Barfield, J. N., Lanzerotti, L. J., Maclennan, C. G., Paulikas, G. A., and Schulz, M.: Quiet-time observation of a coherent compressional Pc 4 micropulsation at synchronous altitude, J. Geophys. Res., 76, 5252–5258, 1971. 4. Claudepierre, S. G., Mann, I. R., Takahashi, K., Fennell, J. F., Hudson, M. K., Blake, J. B., Roeder, J. L., Clemmons, J. H., Spence, H. E., Reeves, G. D., Baker, D. N., Funsten, H.O., Friedel, R. H. W., Henderson, M. G., Kletzing, C. A., Kurth, W. S., MacDowall, R. J., Smith, C. W., and Wygant, R.: Van Allen Probes Observation of Localized Drift-Resonance Between Poloidal Mode Ultra-low Frequency Waves and 60 keV Electrons, Geophys. Res. Lett., 40, 4491–4497, https://doi.org/10.1002/grl.50901, 2013. 5. Dai, L., Takahashi, K., Wygant, Chen, L., Bonnell, J., Cattell, C. A., Thaller, S., Kletzing, C., Smith, C. W., MacDowall, R. J, Baker, D. N., Blake, Fennell, J., Claudepierre, S., Funsten, H. O., Reeves, G. D., and Spence, H. E.: Excitation of poloidal standing Alfven waves through drift resonance wave-particle interaction, Geophys. Res. Lett., 40, 4127–4132, https://doi.org/10.1002/grl.50800, 2013.
Cited by
15 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|