Abstract
The spatial–temporal variations in aurora and VLF emissions during an weak intensification in the auroral zone morning sector on December 30, 2011, have been analyzed. The event was accompanied by a negative bay (~70 nT) in the X component of the magnetic field at ground stations in northern Scandinavia. At the recovery phase of this bay, the precipitation zone moved and VLF emission frequency simultaneously increased over ten minutes, which may indicate that waves and precipitating electrons had a common source. VLF noise bursts in the 600–1000 Hz band with a characteristic modulation scale of ~10 s and the corresponding aurora intensifications localized in the ~100 km region were observed during the following ten minutes, which also confirms that recorded waves are related to electron precipitation. This correspondence of the pulsating aurora periods and VLF noise modulation has been revealed for the first time. The role of VLF wave generation processes during the cyclotron interaction with electrons in the magnetosphere and the propagation of these waves from the magnetosphere to the observation point are discussed.
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References
Yamamoto, T., On the temporal fluctuations of pulsating auroral luminosity, J. Geophys. Res., 1988, vol. 93, no. A2, pp. 897–911.
Johnstone, A.D., Pulsating aurora, Nature, 1978, vol. 274, pp. 119–126.
Santolík, O., Gurnett, D.A., Pickett, J.S., et al., Spatio–temporal structure of storm-time chorus, J. Geophys. Res., 2003, vol. 108, no. A7, 1278. doi 10.1029/2002JA009791
Santolík, O., Gurnett, D.A., Pickett, J.S., et al., Central position of the source region of storm-time chorus, Planet. Space Sci., 2005, vol. 53, nos. 1–3, pp. 299–305.
Nishimura, Y., Bortnik, J., Li, W., et al., Multievent study of the correlation between pulsating aurora and whistler mode chorus emissions, J. Geophys. Res., 2011, vol. 116, A11221. doi 10.1029/2011JA016876
Hansen, H.J. and Scourfield, M.W.J., Associated ground-based observations of optical aurorae and discrete whistler waves, J. Geophys. Res., 1990, vol. 95, pp. 233–239.
Tagirov, V.R., Ismagilov, V.S., Titova, E.E., et al., Auroral pulsations and accompanying VLF emissions, Ann. Geophys., 1999, vol. 17, pp. 66–78.
Ozaki, M., Yagitani, S., Ishizaka, K., et al., Observed correlation between pulsating aurora and chorus waves at Syowa Station in Antarctica: A case study, J. Geophys. Res., 2012, vol. 117, A08211. doi 10.1029/2011JA017478
Bortnik, J., Inan, U.S., and Bell, T.F., Landau damping and resultant unidirectional propagation of chorus waves, Geophys. Res. Lett., 2006, vol. 33, L03102. doi 10.1029/2005GL024553
Helliwell, R.A., Whistlers and Related Ionospheric Phenomena, Palo Alto, California: Standford Univ. Press, 1965.
Bespalov, P.A. and Trakhtengerts, V.Yu., Al’fvenovskie mazery (Alfvén Masers), Gor’kiy: IPF AN SSSR, 1986.
Trakhtengerts, V.Yu. and Rycroft, M.G., Svistovye i al’fvenovskie tsiklotronnye mazery v kosmose (Whistler and Alfvén Cyclotron Masers in the Space), Moscow: Fizmatlit, 2011.
Manninen, J., Some aspects of ELF–VLF emissions in geophysical research. Sodankylä Geophys. Obs. Sodankylä, Finland, 2005. http://www.sgo.fi/Publications/SGO/thesis/ManninenJyrki.pdf
Kozelov, B.V., Pilgaev S.V., Borovkov L.P., et al., Multi-scale auroral observations in Apatity: winter 2010-2011, Geosci. Instrum. Method. Data Syst., 2012, vol.1, pp. 1–6.
Tanskanen, E.I., A comprehensive high-throughput analysis of substorms observed by image magnetometer network: Years 1993–2003 examined, J. Geophys. Res., 2009, vol. 114, A05204. doi 10.1029/2008JA013682
Serra, J., Image Analysis and Mathematical Morphology, London: Academic, 1982.
Kozelov B.V., Application of mathematical morphology to data of ground-based auroral observations, Physics of auroral phenomena, Proc. XXXVII Annual Seminar, Apatity, ISBN 978-5-91137-286-6, 2014. pp. 42–45.
Kozelov, B.V., Titova, E.E., Manninen, J., et al., Irregular pulsations in simultaneous TV, IRIS and VLF observations, Proceedings of 31st Annual European Meeting on Atmospheric Studies by Optical Methods, Ambleside, 2005, pp. 42–49.
Shklyar, D.R. and Jiricek, F., Simulation of non ducted whistler spectrograms observed aboard the MAGION 4 and 5 satellites, J. Atmos. Sol.–Terr. Phys., 2000, vol. 62, pp. 347–370.
Sonwalkar, V.S. and Harikumar, J., An explanation of ground observations of auroral hiss: Role of density depletions and meter-scale irregularities, J. Geophys. Res., 2000, vol. 105, no. A8, pp. 18867–18883.
Kuzichev, I.V., On whistler mode wave scattering from density irregularities in the upper ionosphere, J. Geophys. Res., 2012, vol. 117, A06325. doi 10.1029/2011JA017130
Bespalov, P.A., Parrot, M., and Manninen, J., Short period VLF emissions as solitary envelope waves in a magnetospheric plasma maser, J. Atmos. Sol.–Terr. Phys., 2010, vol. 72, pp. 1275–1281.
Bespalov, P.A., Passive synchronization of modes in masers with a nonequidistant spectrum, Zh. Eksp. Teor. Fiz., 1984, vol. 87, no. 6, pp. 1894–1905.
Manninen, J., Demekhov, A.G., Titova, E.E., et al., Quasiperiodic VLF emissions with short-period modulation and their relationship to whistlers: A case study, J. Geophys. Res., 2014, vol. 119, pp. 3544–3557. doi 10.1002/2013JA019743
Liang, J., Uritsky, V., Donovan, E., et al., THEMIS observations of electron cyclotron harmonic emissions, ULF waves, and pulsating aurora, J. Geophys. Res., 2010, vol. 115, A10235. doi 10.1029/2009JA015148
Trakhtengerts, V.Yu., Tagirov, V.R., and Chernous, S.A., Flowing cyclotron maser and pulse VLF radiation, Geomagn. Aeron., 1986, vol. 26, no. 1, pp. 99–106.
Demekhov, A.G. and Trakhtengerts, V.Y., A mechanism of formation of pulsating aurorae, J. Geophys. Res., 1994, vol. 99, no. 4, pp. 5831–5841. doi 10.1029/93JA01804
Hayosh, M., Pasmanik, D.L., Demekhov, A.G., et al., Simultaneous observations of quasi-periodic ELF/VLF wave emissions and electron precipitation by DEMETER satellite: A case study, J. Geophys. Res., 2013, vol. 118, pp. 4523–4533. doi 10.1002/jgra.50179
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Original Russian Text © B.V. Kozelov, J. Manninen, E.E. Titova, 2016, published in Kosmicheskie Issledovaniya, 2016, Vol. 54, No. 1, pp. 44–51.
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Kozelov, B.V., Manninen, J. & Titova, E.E. Pulsating aurora and quasiperiodic VLF hiss in the auroral zone morning sector: The event of December 30, 2011. Cosmic Res 54, 40–46 (2016). https://doi.org/10.1134/S0010952516010111
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DOI: https://doi.org/10.1134/S0010952516010111