Incoherent Scatter Radar Observations of Ionospheric Signatures of Cusp-Like Electron Precipitation
作者： Jurgen WATERMANN , Odile DE LA BEAUJARDIERE , Patrick T. NEWELL
DOI: 10.5636/JGG.44.1195
关键词:
摘要: We present a case study of spatially and temporally coincident DMSP-F7 electron ion precipitation measurements Sondrestrom incoherent scatter radar observations ionospheric plasma parameters. The particle flux data allow us to determine the boundaries between magnetospheric regions central sheet (CPS), boundary layer (PSBL), cusp proper, mantle (PM), mapped down DMSP orbit (835km altitude). PSBL, cusp, equatorward section PM are characterized by intense low energy (<400eV) precipitation. measured enhanced density elevated temperature at 350km altitude same invariant latitude interval where detected low-energy flux. was unaffected, as were temperatures 200km altitude. convection pattern inferred from Doppler shift suggests that heated cloud observed in F region locally produced soft near proper rather than convected into field view. This demonstrates precipitation, which is typical for magnetosheath-like entry particular can under certain conditions be identified its thermal signatures.
harvard.edu
sci-hub.st 参考文章(23)
P. E. Sandholt, A. Egeland, J. A. Holtet, B. Lybekk, K. Svenes, S. Åsheim, Large — and Small — Scale Dynamics of the Polar Cusp Region Springer, Dordrecht. pp. 163- 175 ,(1985) , 10.1007/978-94-009-5295-9_12
Ching-I. Meng, Simon Wing, Vincent Sigillito, Patrick T. Newell, A neural-network-based system for monitoring the aurora Johns Hopkins Apl Technical Digest. ,vol. 11, pp. 291- 299 ,(1990)
G. G. Sivjee, The Effects of Magnetosheath Electrons on Charge Exchange, Radiation Trapping and Other Atomic and Molecular Processes in the Mid-Day Polar Cusp Thermosphere The Polar Cusp. pp. 111- 126 ,(1985) , 10.1007/978-94-009-5295-9_8
M. S. Gussenhoven, D. A. Hardy, R. L. Carovillano, Average Electron Precipitation in the Polar Cusps, Cleft and Cap The Polar Cusp. pp. 85- 97 ,(1985) , 10.1007/978-94-009-5295-9_6
D. A. Hardy, M. S. Gussenhoven, E. Holeman, A statistical model of auroral electron precipitation Journal of Geophysical Research. ,vol. 90, pp. 4229- 4248 ,(1985) , 10.1029/JA090IA05P04229
E. J. Weber, J. Buchau, J. G. Moore, J. R. Sharber, R. C. Livingston, J. D. Winningham, B. W. Reinisch, Flayer ionization patches in the polar cap Journal of Geophysical Research. ,vol. 89, pp. 1683- 1694 ,(1984) , 10.1029/JA089IA03P01683
M. J. Engebretson, B. J. Anderson, L. J. Cahill, R. L. Arnoldy, T. J. Rosenberg, D. L. Carpenter, W. B. Gail, R. H. Eather, Ionospheric signatures of cusp latitude Pc 3 pulsations Journal of Geophysical Research. ,vol. 95, pp. 2447- 2456 ,(1990) , 10.1029/JA095IA03P02447
W. C. Knudsen, P. M. Banks, J. D. Winningham, D. M. Klumpar, Numerical model of the convecting F 2 ionosphere at high latitudes Journal of Geophysical Research. ,vol. 82, pp. 4784- 4792 ,(1977) , 10.1029/JA082I029P04784
B. Aparicio, B. Thelin, R. Lundin, The polar cusp from a particle point of view: A statistical study based on Viking data Journal of Geophysical Research. ,vol. 96, pp. 14023- 14031 ,(1991) , 10.1029/90JA01075
K. B. Baker, R. A. Greenwald, J. M. Ruohoniemi, J. R. Dudeney, M. Pinnock, P. T. Newell, M. E. Greenspan, C.-I. Meng, Simultaneous HF-radar and DMSP observations of the cusp Geophysical Research Letters. ,vol. 17, pp. 1869- 1872 ,(1990) , 10.1029/GL017I011P01869