World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

A Study of Fine Structure of Diffuse Aurora with Alis-fast Measurements : Volume 26, Issue 11 (21/10/2008)

By Sergienko, T.

Click here to view

Book Id: WPLBN0004001911
Format Type: PDF Article :
File Size: Pages 11
Reproduction Date: 2015

Title: A Study of Fine Structure of Diffuse Aurora with Alis-fast Measurements : Volume 26, Issue 11 (21/10/2008)  
Author: Sergienko, T.
Volume: Vol. 26, Issue 11
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Description: Swedish Institute of Space Physics, Kiruna, Sweden. We present results of an investigation of the fine structure of the night sector diffuse auroral zone, observed simultaneously with optical instruments (ALIS) from the ground and the FAST electron spectrometer from space 16 February 1997. Both the optical and particle data show that the diffuse auroral zone consisted of two regions. The equatorward part of the diffuse aurora was occupied by a pattern of regular, parallel auroral stripes. The auroral stripes were significantly brighter than the background luminosity, had widths of approximately 5 km and moved southward with a velocity of about 100 m/s. The second region, located between the region with auroral stripes and the discrete auroral arcs to the north, was filled with weak and almost homogeneous luminosity, against which short-lived auroral rays and small patches appeared chaotically. From analysis of the electron differential fluxes corresponding to the different regions of the diffuse aurora and based on existing theories of the scattering process we conclude the following: Strong pitch angle diffusion by electron cyclotron harmonic waves (ECH) of plasma sheet electrons in the energy range from a few hundred eV to 3–4 keV was responsible for the electron precipitation, that produced the background luminosity within the whole diffuse zone. The fine structure, represented by the auroral stripes, was created by precipitation of electrons above 3–4 keV as a result of pitch angle diffusion into the loss cone by whistler mode waves. A so called internal gravity wave (Safargaleev and Maltsev, 1986) may explain the formation of the regular spatial pattern formed by the auroral stripes in the equatorward part of the diffuse auroral zone.

A study of fine structure of diffuse aurora with ALIS-FAST measurements

Anger, C. D., Moshupi, M. C., Wallis, D. D., Murphree, J. S., Brace, L. H., and Shepherd, G. G.: Detached auroral arcs in the trough region, J. Geophys. Res., 83, 2683–2689, 1978.; Belmont, G., Fontaine, D., and Canu, P.: Are equatorial electron cyclotron waves responsible for diffuse auroral electron precipitation?, J. Geophys. Res., 88, 9163–9170, 1983.; Bespalov, P. A. and Trakhtengerts, V. Y.: Cyclotron Instability of the Earth Radiation Belts., Rev. Plasma Phys., 10, p. 155, 1986.; Brändström, U.: The Auroral Large Imaging System -Design, operation and scientific results. PhD thesis, Swedish Institute of Space Physics, Kiruna, Sweden, October 2003 (IRF Scientific Report 279), ISBN: 91-7305-405-4, 2003.; Carlson, C. W., Pfaff, R. F., and Watzin, J. G.: The Fast Auroral SnapshoT (FAST) mission, Geophys. Res. Lett., 25, 2013–2016, 1998.; Davis, T. N.: Observed characteristics of auroral forms, Space Sci. Rev., 22, 77–113, 1978.; Feldstein, Ya. I. and Galperin, Yu. I.: The auroral luminosity structure in the high-latitude upper atmosphere: its dynamics and relationship to the large-scale structure of the earth�s magnetosphere, Rev. Geophys., 23, 217–275, 1985.; Hedin, A. E.: Extension of the MSIS thermosphere model into the middle and lower atmosphere, J. Geophys. Res., 96, 1159–1172, 1991.; Horne, R. B. and Thorne, R. M.: Electron pitch angle diffusion by electrostatic electron cyclotron harmonic waves: The origin of pancake distributions., J. Geophys. Res., 105, 5391–5402, 2000.; Horne, R. B., Thorne, R. M., Meredith, N. P., and Anderson, R. R.: Diffuse auroral electron scattering by electron cyclotron harmonic and whistler mode waves during an isolated substorm., J. Geophys. Res., 108(A7), 1290, doi:10.1029/2002JA009736, 2003.; Ivanov, V. E., Kirillov, A. S., Sergienko, T. I., and Steen, Å.: Modelling of the altitude distribution of green line (λ5577Å) luminosity in aurora, in Airglow and Aurora, Sergej Leontyev, Editor., Proc. SPIE, 2050, 105–113, 1993.; Johnstone, A. D., Walton, D. M., Liu, R., and Hardy, D. A.: Pitch Angle Diffusion of Low-Energy Electrons by Whistler Mode Waves, J. Geophys. Res., 98, 5959–5967, 1993.; Kennel, C. F. and Petscheck, H. E.: Limit on stably trapped particle fluxes, J. Geophys. Res., 71, 1–28, 1966.; Kennel, C. F., Scarf, F. L., Fredricks, R. W., McGehee, J. H., and Coroniti, F. V.: VLF Electric Field Observations in the Magnetosphere, J. Geophys. Res., 75, 6136–6152, 1970.; Lui, A. T. Y. and Anger, C. D.: A uniform belt of diffuse auroral emission seen by the ISIS-2 scanning photometer, Planet. Space Sci., 21, 799–809, 1973.; Lyons, L. R.: Pitch angle and energy diffusion coefficients from resonant interactions with ion-cyclotron and whistler waves, J. Plasma Phys., 12, 417–432, 1974.; Lyons, L. R., Koskinen, H. E. J., Blake, J. B., Egeland, A., Hirahara, M., Øieroset, M. Sandholt, P. E., and Shiokawa, K.: Processes leading to plasma losses into the high-latitude atmosphere, in: Magnetospheric Plasma Sources and Losses, edited by: Hultqvist, B., Øieroset, M., Pashmann, G., and Treumann, R., Vol. 6 of Space Science Series of ISSI, Dordrecht, Boston and London: Kluwer Academic Publishers, Chapt. 3, p. 85, 1999.; Meredith, N. P., Horne, R. B., Johnstone, A. D., and Anderson, R. R.: The temporal evolution of electron distributions and associated wave activity following substorm injections in the inner magnetosphere, J. Geophys. Res., 105, 12 907–12 917, 2000.; Newell, P. Y., Feldstein, Y., Galperin, Y., and Meng, C.-I.: The morphology of nightside precipitation, J. Geophys. Res., 101, 10 737–10 748, 1996.; Peticolas, L. M., Hallinan, T. J., Stenbaek-Nielsen, H. C., Bonnell, J. W., and Carlson, C. W.: A study of black aurora from aircraft-based optical observations and plasma measurements on FAST, J. Geophys. Res., 107(A8), 1217, doi:10.1029/2001JA900157, 2002.; Røyrvik, O.: Pulsating aurora: Local and global morphology, Ph.D. Thesis Alaska Univ., College., 1976.; Safargaleev, V. V. and Maltsev


Click To View

Additional Books

  • The Optical and Physical Properties of A... (by )
  • Validation of Gome Total Ozone by Means ... (by )
  • Properties of a Cusp Diamagnetic Cavity ... (by )
  • An Investigation of Latitudinal Transiti... (by )
  • Analysis of Gravity Waves in the Tropica... (by )
  • Sea Level Variability at Adriatic Coast ... (by )
  • Applications of Kalman Filters Based on ... (by )
  • Radiative Forcing by Contrails : Volume ... (by )
  • Statistical Analysis of Nonlinear Wave I... (by )
  • Simulation of the Influence of Historica... (by )
  • Ulf Wave Occurrence Statistics in a High... (by )
  • Temporal Heterogeneity in Aerosol Charac... (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.