Results 121 to 130 of about 4,774 (237)

High-resolution maps of the characteristic energy of precipitating auroral particles [PDF]

, 2001
For the first time we produce high-resolution maps of the characteristic energy of precipitating electrons from ground-based instrumentation in the auroral zone over northern Scandinavia. This is done by combining intensity-calibrated optical data at 557.
Kosch, M.J., del Pozo, C.F., Honary, F., Hagfors, T., Marple, S., Kosch, M., del Pozo, C., del Pozo, C. F., S. R. Marple, Marple, S.R., Kosch, M. J., M. J. Kosch, Marple, S. R., F. Honary, T. Hagfors, C. F. del Pozo   +15 more
core   +1 more source

Imaging riometer observations of drifting absorption patches in the morning sector [PDF]

, 2004
International audienceObservations by a 7x7-beam imaging riometer in Kilpisjärvi, Finland (~66° MLAT) of the drifting cosmic noise absorption (CNA) structures in the morning sector near the zonal drift reversals are presented.
V. S. C. Howells, Howells, V. S. C., Makarevitch, R. A., McCrea, I. W., F. Honary, I. W. McCrea, Honary, F., R. A. Makarevitch   +7 more
core   +1 more source

Weak double layers in the auroral ionosphere

Laser and Particle Beams, 1987
Previous work on the evolution of weak double layers in a hydrogen plasma has been extended to include H+ and O+ with relative drift. It has been shown (Bergmann & Lotko 1986) that the relative drift between hydrogen and oxygen ions due to a quasistatic parallel electric field gives rise to a strong linear fluid instability which dominates the ion ...
M. K. Hudson, T. L. Crystal, W. Lotko, C. Barnes   +3 more
openaire   +1 more source

EISCAT/CRRES observations: Nightside ionospheric ion outflow and oxygen-rich substorm injections [PDF]

, 1996
We present combined observations made near midnight by the EISCAT radar, all-sky cameras and the combined released and radiation efects satellite (CRRES) shortly before and during a substorm.
Gazey, N. G. J., Aylward, A. D., Bunting, R., Wilken, B., Perry, C., Gazey, N.G.J., Bunting, R.J., Opgenoorth, H., Lockwood, M., Smith, P., Lockwood M, Coles S, Lockwood, Mike, Aylward AD, Aylward, A.D., Grandé, M., Coles, S., Gazey NGJ, Perry, C.H., Smith PN, Gazey, N., Smith, P. N., M. Grande, M. Gr, N. G. J. Gazey, Grande M, Bunting RJ, H. Opgenoorth, B. Wilken, A. D. Aylward, Smith, P.N., Bunting, R. J., Perry, C. H., Wilken B, M. Lockwood, S. Coles, Opgenoorth H, P. N. Smith, Perry CH, R. J. Bunting, Aylward, A., C. H. Perry   +41 more
core   +1 more source

Observation of VLF Emissions at Syowa Station in 1970-1971 : I. Relationship between the Occurrence of Auroral Hiss Emissions and the Location of Auroral Arcs (Reports of the Japanese Antarctic Research Expedition)

Antarctic Record, 1973
VLF emissions were observed at Syowa Station by the 11th wintering party of the Japanese Antarctic Research Expedition in 1970-1971. The present paper deals particularly with the records of auroral hiss emissions, which are believed to be emitted by ...
Kazuo MAKITA, Hiroshi FUKUNISHI
doaj   +1 more source

Jupiter's polar ionospheric flows: measured intensity and velocity variations poleward of the main auroral oval

, 2003
Recent analysis of high-resolution spectra of Doppler-shifted H3+ emission from the auroral/polar regions of Jupiter revealed a complex wind system, with a persistent auroral electrojet and strong anti-sunward flows in a region of lesser intensity ...
Miller, S., Cowley, S.W.H., Stallard, T.S., Bunce, E.J.   +3 more
core  

Solar wind-magnetosphere-ionosphere interactions in the earth's plasma environment [PDF]

, 2003
The properties of the Earth’s coupled magnetosphere-ionosphere system are dominated by its interaction with the solar wind plasma, mediated by magnetic reconnection processes at the magnetopause interface.
McWilliams, K. A., Davies, J. A., Sandholt, P. E., Cowley, S. W. H., Milan, S. E., Provan, G., Lester, M., Wild, J. A., Khan, H., Yeoman, T. K., Grocott, A.   +10 more
core  

First E region observations of mesoscale neutral wind interaction with auroral arcs [PDF]

, 2010
We report the first observations of E region neutral wind fields and their interaction with auroral arcs at mesoscale spatial resolution during geomagnetically quiet conditions at Mawson, Antarctica.
Fiori, R. A. D., Kosch, Mike J., Anderson, C., Makarevich, R. A., Carter, B. A., Davies, T., Conde, M., Dyson, P. L.   +7 more
core  

Nonlinear Gyrokinetic Simulation of the Magnetosphere‐Ionosphere Feedback Coupling

Geophysical Research Letters
A nonlinear gyrokinetic simulation is applied to the magnetosphere‐ionosphere (M‐I) coupling system to investigate spontaneous growth of auroral structures and electron acceleration self‐consistently.
T.‐H. Watanabe, K. Fujita, S. Maeyama
doaj   +1 more source

THE FEATURE OF THE IONOSPHERE IN THE AURORAL ZONE AND THE MAGNETOSPHERE- IONOSPHERE COUPLING

Chinese Journal of Space Science, 1989
Shen, C., Luo, Y., Schlegel, K.
openaire   +2 more sources