TIME-SPATIAL CORRESPONDENCE BETWEEN PI2 WAVE POWER AND ULTRA-VIOLET AURORA BURSTS
Abstract and keywords
Abstract (English):
We have examined snapshots of overlaid ultra-violet (UV) auroral images from POLAR and IMAGE spacecraft and ULF wave power in the Pi2 frequency band (5--30~mHz). The latitudinal distribution of the Pi2 spectral power, as well as the position of the ionospheric electrojet, are inferred from the MACCS-CARISMA-MEASURE array of magnetic stations. A substorm develops as a series of ``detonations'', accompanied by an enhancement of auroral luminosity, intensification of the ionospheric currents, and a burst of Pi2 wave power. The epicenter of each detonation leaps during each activation poleward and westward. The latitudinal location of the auroral ionospheric westward electrojet and Pi2 power is found to be mainly associated with the poleward border of the auroral activation region. The result of case studies is supported by statistical superposed latitudinal distributions of the auroral intensity and Pi2 power. The found correspondence between the UV auroral oval and Pi2 power ``epicenter'' may help to identify a possible channel of Pi2 wave energy transmission from the magnetotail to the ground.

Keywords:
ULF waves, Pi2 pulsations, substorm, auroral oval, ionospheric electrojet
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References

1. Allan, W., Wright, A. N. Hydromagnetic wave propagation and coupling in a magnetotail waveguide, // J. Geophys. Res., 1998. - v. 103 - p. .

2. Baumjohann, W., Glassmeier, K. H. The transient response mechanism and Pi2 pulsations at substorm onset - Review and outlook, // Planet. Space Sci., 1984. - v. 32 - p. 1361.

3. Carbary, J. F., Sotirelis, T., Newell, P. T., Meng, C.-I. Auroral boundary correlations between UVI and DMSP, // J. Geophys. Res., 2003. - v. 108 - p. 1361.

4. Chang, T. F., Cheng, C.-Z. Relationship between wave-like auroral arcs and Pi2 disturbances in plasma sheet prior to substorm onset, // Earth, Planets and Space, 2015. - v. 67 - p. 1361.

5. Edwin, P. M., Roberts, B., Hughes, W. J. Dispersive ducting of MHD waves in the plasma sheet: A source of Pi2 wave bursts, // Geophys. Res. Lett., 1986. - v. 13 - p. 370.

6. Engebretson, M. J., et al. Magnetometer array for cusp and cleft studies observations of the spatial extent of broadband ULF magnetic pulsations at cusp/cleft latitudes, // J. Geophys. Res., 1995. - v. 100 - p. 19,371.

7. Fujita, S., Itonaga, M., Nakata, H. Relationship between the Pi2 pulsations and the localized impulsive current associated with the current disruption in the magnetosphere, // Earth Planets Space, 2000. - v. 52 - p. 267.

8. Hameiri, E., Kivelson, M. G. Magnetospheric waves and the atmosphere-ionosphere layer, // J. Geophys. Res., 1991. - v. 96 - p. 21,125.

9. Hsu, T.-S., McPherron, R. L. A statistical study of the relation of Pi2 and plasma flows in the tail, // J. Geophys. Res., 2007. - v. 112 - p. 21,125.

10. Keiling, A., et al. The global morphology of wave poynting flux: Powering the aurora, // Science, 2003. - v. 299 - p. 383.

11. Keiling, A., Takahashi, K. Review of Pi2 models, // Space Sci. Rev., 2011. - v. 161 - p. 63.

12. Keiling, A. Pi2 pulsations driven by ballooning instability, // J. Geophys. Res., 2012. - v. 117 - p. 63.

13. Kepko, L., Kivelson, M. G. Generation of Pi2 pulsations by bursty bulk flows, // J. Geophys. Res., 1999. - v. 104 - p. 25,021.

14. Kepko, L., Kivelson, M. G., McPherron, R. L., Spence, H. E. Relative timing of substorm onset phenomena, // J. Geophys. Res., 2003. - v. 109 - p. 25,021.

15. Kim, K.-H., et al. Pi2 pulsations associated with poleward boundary intensifications during the absence of substorms, // J. Geophys. Res., 2005. - v. 110 - p. 25,021.

16. Liu, W. W., Xu, B. L., Samson, J. C., Rostoker, G. Theory and observation of auroral substorms: A MHD approach, // J. Geophys. Res., 1995. - v. 100 - p. 79.

17. Longden, N., et al. Estimating the location of the open-closed magnetic field line boundary from auroral images, // Ann. Geophys., 2010. - v. 28 - p. 1659.

18. Lorentzen, D. A., Shumilov, N., Moen, J. Drifting airglow patches in relation to tail reconnection, // Geophys. Res. Lett., 2004. - v. 31 - p. 1659.

19. Lyons, R. L., et al. Association between Geotail plasma flows and auroral poleward boundary intensifications observed by CANOPUS photometers, // J. Geophys. Res., 1999. - v. 104 - p. 4485.

20. Lyons, R. L., Voronkov, I. O., Donovan, E. F., Zesta, E. Relation of substorm breakup arc to other growth-phase auroral arcs, // J. Geophys. Res., 2002. - v. 107 - p. 4485.

21. Lysak, R. L., Song, Y. Energetics of the ionospheric feedback interaction, // J. Geophys. Res., 2002. - v. 107 - p. SIA 6-1.

22. Ma, Z. W., Lee, L. C., Otto, A. Generation of field-aligned currents and Alfven waves by 3D magnetic reconnection, // Geophys. Res. Lett., 1995. - v. 22 - p. 1737.

23. Mal'tsev, Yu. P., Leont'ev, S. V., Lyatsky, V. B. Pi2 pulsations as a result of evolution of an Alfven impulse originating in the ionosphere during a brightening of aurora, // Planet. Space Sci., 1974. - v. 22 - p. 1737.

24. Mann, I. R., et al. The upgraded CARISMA magnetometer array in the THEMIS era, // Space Sci. Rev., 2008. - v. 141 - p. 413.

25. Mazur, N. G., Fedorov, E., Pilipenko, V. MHD waveguides in space plasma, // Plasma Physics Report, 2010. - v. 36 - p. 653.

26. Murphy, K. R., et al. The dependence of Pi2 waveforms on periodic velocity enhancements within bursty bulk flows, // Ann. Geophys., 2011. - v. 29 - p. 493.

27. Newell, P. T., Sotirelis, T., Wing, S. Diffuse, monoenergetic, and broadband aurora: The global precipitation budget, // J. Geophys. Res., 2009. - v. 114 - p. 493.

28. Nose, M. Excitation mechanism of low-latitude Pi2 pulsations: Cavity mode resonance or BBF-driven process?, // J. Geophys. Res., 2010. - v. 115 - p. 493.

29. Olson, J. V. Pi2 pulsations and substorm onsets: A review, // J. Geophys. Res., 1999. - v. 104 - p. 17,499.

30. Panov, E. V., et al. Period and damping factor of Pi2 pulsations during oscillatory flow braking in the magnetotail, // J. Geophys. Res., 2014. - v. 119 - p. 4512.

31. Pilipenko, V., Fedorov, E., Engebretson, M. J., Yumoto, K. Energy budget of Alfven wave interactions with the auroral acceleration region, // J. Geophys. Res., 2004. - v. 109 - p. 4512.

32. Pilipenko, V., Mazur, N., Fedorov, E., Uozumi, T., Yumoto, K. Excitation of Alfven impulse by the anomalous resistance onset on the auroral field lines, // Ann. Geophys., 2005. - v. 23 - p. 1455.

33. Rae, I. J., Watt, C. E. J. ULF waves above the nightside auroral oval during substorm onset // ``Low frequency waves in space plasmas'', Keiling A., Lee D. H., Nakariakov V. (eds) - US: Wiley., 2016. - p. 99.

34. Semenov, V., Bogdanova, Y., Rijnbeek, R., Buchan, M. . A new mechanism for interpreting the motion of auroral arcs in the nightside ionosphere, // Geophys. Res. Lett., 1999. - v. 26 - p. 2367.

35. Shiokawa, K., Yumoto, K., Olson, J. V. Multiple auroral brightenings and associated Pi2 pulsations, // Geophys. Res. Lett., 2002. - v. 29 - p. 32-1.

36. Shiokawa, K., et al. High-speed ion flow, substorm current wedge, and multiple Pi2 pulsations, // J. Geophys. Res., 1998. - v. 103 - p. 4491.

37. Sutcliffe, P. R., Yumoto, K. On the cavity mode nature of low-latitude Pi2 pulsations, // J. Geophys. Res., 1991. - v. 96 - p. 1543.

38. Takahashi, K., Liou, K., Yumoto, K. Correlative study of ultraviolet aurora and low-latitude Pi2 pulsations, // J. Geophys. Res., 2002. - v. 107 - p. 1543.

39. Uozumi, T., et al. Characteristics of energy transfer of Pi2 magnetic pulsations: Latitudinal dependence, // Geophys. Res. Lett., 2000. - v. 27 - p. 1619.

40. Wang, G. Q., et al. A statistical analysis of Pi2-band waves in the plasma sheet and their relation to magnetospheric drivers, // J. Geophys. Res., 2015. - v. 120 - p. 6167.

41. Wolf, R. A., Chen, C. X., Toffoletto, F. R. Thin filament simulations for Earth's plasma sheet: Interchange oscillations, // J. Geophys. Res., 2012. - v. 117 - p. 6167.

42. Wygant, J. R., et al. Polar spacecraft based comparisons of intense electric fields and Poynting flux near and within the plasma sheet-tail lobe boundary to UVI images: An energy source for the aurora, // J. Geophys. Res., 2000. - v. 105 - p. 18,675.

43. Xing, X., Wang, C.-P., Liang, J., Lyons, L. R. Plasma sheet Pi2 pulsations associated with bursty bulk flows, // J. Geophys. Res., 2015. - v. 120 - p. 8692.

44. Yamaguchi, R., et al. The timing relationship between bursty bulk flows and Pi2s at the geosynchronous orbit, // Geophys. Res. Lett., 2002. - v. 29 - p. 1.

45. Yumoto, K., et al. Multiple ground-based and satellite observations of global Pi2 magnetic pulsations, // J. Geophys. Res., 1990. - v. 95 - p. 15,175.

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