[PDF] Top 20 Study of auroral forms and electron precipitation with the IRIS, DASI and EISCAT systems
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Study of auroral forms and electron precipitation with the IRIS, DASI and EISCAT systems
... both IRIS and DASI 2-D distributions, in order to identify and compare the spatial structure and to study the temporal evolution of corresponding auroral forms and precipitation ... See full document
15
Estimation of the characteristic energy of electron precipitation
... of auroral forms and arcs moving across their respective fields of view, con- sistent with the drift patterns at substorm growth, expansion and recovery phases (particularly in period ...for EISCAT, ... See full document
11
Study of the auroral emissions and electron precipitation depending on the solar activity
... Fast glow changes (with the time scale of seconds) are observed during the disturbed period. Immense variety of forms generate, move through the field of view, changing in form and intensity. The observed arcs ... See full document
9
ANGEO - Proton-electron precipitation effects on the electron production and density above EISCAT (Tromsø) and ESR
... Our study relies on the statistical studies of Hardy et al. (1984, 1985, 1989). These authors analyzed 26.5 ´ 10 6 particle spectra from DMSP F6 and F7. As far as the electrons are concerned, they distinguish two ... See full document
9
(0,2) ions from spectrographic measurements used to infer the energy of precipitation in different auroral forms and compared with radar measurements
... Two examples are shown in Fig. 11 of the fitted ionisa- tion rate profiles. The EISCAT electron densities have been converted to ionisation rate profiles, assuming a constant re- combination rate ... See full document
14
Substorm related changes in precipitation in the dayside auroral zone – a multi instrument case study
... in precipitation. This precipitation leads to enhanced absorption in the nearby riometers and is coupled with the more energetic particles being injected at the night- ...The electron ... See full document
14
Auroral E-region electron density height profile modification by electric field driven vertical plasma transport: some evidence in EISCAT CP-1 data statistics
... our study lies on the usage of CP-1 ...our study that it is difficult to demonstrate a VPT effect beyond any doubt but we forwarded – to our mind – rather intriguing signatures in favor of the existence of ... See full document
10
A localised co rotating auroral absorption event observed near noon using imaging riometer and EISCAT
... energetic electron precipi- tation observed near local noon in the auroral zone has been investigated using imaging riometer (IRIS) and inco- herent-scatter radar (EISCAT) ...techniques. ... See full document
12
Energy deposition in the lower auroral ionosphere through energetic particle precipitation
... at EISCAT are related to the ...from EISCAT to the equatorward edge of the cusp casts doubt on this being a reasonable assumption and the likelihood of the precipitation being related to the ... See full document
324
The dynamics and relationships of precipitation, temperature and convection boundaries in the dayside auroral ionosphere
... to electron cooling below 400 km. A recent model study by Vontrat- Reberac (2001) demonstrated that cusp electrons may heat the ambient electron gas by typically 750–1000 K, and give rise to much ... See full document
15
An optical study of multiple NEIAL events driven by low energy electron precipitation
... precipitating electron energies, ...rayed auroral forms, has a larger spread of electron beam velocities than a purely low energy ...unstable electron population causing the growth of ... See full document
13
Enhanced EISCAT UHF backscatter during high-energy auroral electron precipitation
... overestimated electron densities in analysis of incoherent scatter ...the electron den- sity profile derived by conditional averaging over power pro- files is ... See full document
7
Parameterization of ionization rate by auroral electron precipitation in Jupiter
... ([email protected]) behind the planetary rotation when they are transported out- ward from the Io torus. In the reference frame of the plane- tary rotation, a corotation electric field is induced in the ... See full document
10
A comparison of EISCAT and Dynasonde measurements of the auroral ionosphere
... peak electron densities, derived from reflection frequencies, are consis- tent with the corrected EISCAT ...the EISCAT radar during the SP-UK-DYNA experi- ... See full document
10
Electron density measurement under the influence of auroral precipitation and electron beam injection during the DELTA campaign
... maximum electron density of 2 · 10 6 cm −3 at an altitude of ...of electron density in the altitude range from 124 to 132 km is natural ionization due to auroral precip- ...The EISCAT data did ... See full document
8
Imaging and EISCAT radar measurements of an auroral prebreakup event
... coordinated EISCAT and TV- camera observations of a prebreakup event on 15 Novem- ber 1993 have been ...parallel auroral arcs, plasma depletion on the poleward edge of one of these arcs as well as ... See full document
7
A substorm in midnight auroral precipitation
... night auroral precipitation during a ...different auroral precipitation bound- aries and simultaneous changes in average electron precip- itation energy and energy flux in different ... See full document
10
Global auroral conductance distribution due to electron and proton precipitation from IMAGE-FUV observations
... threshold. Auroral activity in- creased after 05:00 UT and SI12 imaged a sudden brighten- ing in the post-noon ...the auroral signal intensified near 00:00 ...to electron occurs around 19:30 MLT and ... See full document
17
EISCAT observations of plasma patches at sub-auroral cusp latitudes
... cusp/cleft auroral display, and hence their prop- erties had not yet been influenced by cusp particle showers and electrodynamics on open flux ...high electron density further ...total electron ... See full document
12
EISCAT observations of plasma patches at sub-auroral cusp latitudes
... cusp/cleft auroral display, and hence their prop- erties had not yet been influenced by cusp particle showers and electrodynamics on open flux ...high electron density further ...total electron ... See full document
13
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