Zobrazeno 1 - 10
of 406
pro vyhledávání: '"J F, Spann"'
Publikováno v:
Annales Geophysicae, Vol 25, Pp 1865-1876 (2007)
Using Polar UVI LBHl and IMAGE FUV WIC data, we have compared the auroral signatures and polar cap open flux for isolated substorms, sawteeth oscillations, and steady magnetospheric convection (SMC) events. First, a case study of each event type i
Externí odkaz:
https://doaj.org/article/328eb1fc362a499bbb97f690155d293f
Autor:
M. O. Fillingim, G. K. Parks, L. J. Chen, M. Brittnacher, G. A. Germany, J. F. Spann, D. Larson, R. P. Lin
Publikováno v:
Geophysical Research Letters. 27:1379-1382
Using POLAR/UVI global images, we have identified a period of successive minor auroral activations during which WIND was making a perigee pass (X approx. - 11Re). These auroral brightenings are interpreted to be pseudobreakups due to the lack of glob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c621b44a2585fe40fc8a2760ec21cd07
https://doi.org/10.1029/1999gl010773
https://doi.org/10.1029/1999gl010773
Autor:
M. Hirahara, J. L. Horwitz, T. E. Moore, G. A. Germany, J. F. Spann, W. K. Peterson, E. G. Shelley, M. O. Chandler, B. L. Giles, P. D. Craven, C. J. Pollock, D. A. Gurnett, J. S. Pickett, A. M. Persoon, J. D. Scudder, N. C. Maynard, F. S. Mozer, M. J. Brittnacher, T. Nagai
Publikováno v:
Journal of Geophysical Research: Space Physics. 103:17391-17410
The POLAR satellite often observes upflowing ionospheric ions (UFls) in and near the auroral oval on southern perigee (approximately 5000 km altitude) passes. We present the UFI features observed by the thermal ion dynamics experiment (TIDE) and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95f948359a60fdfb1461c3566d2dc8ce
https://doi.org/10.1029/97ja02668
https://doi.org/10.1029/97ja02668
Autor:
G. A. Germany, G. K. Parks, H. Ranganath, R. Elsen, P. G. Richards, W. Swift, J. F. Spann, M. Brittnacher
Publikováno v:
Geophysical Research Letters. 25:3043-3046
The solar wind interaction with the geomagnetic field is studied using global auroral images obtained by the Ultraviolet Imager (UVI) on Polar. We study the dynam,cs of the poleward and equatorward boundaries of the auroral oval in response to the so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::422faad0a3be7a9bc7e414108cfacd15
https://doi.org/10.1029/98gl01220
https://doi.org/10.1029/98gl01220
Publikováno v:
Geophysical Research Letters. 25:2585-2588
We present the results of a global magnetospheric simulation of the initial period of the January 10 - 11, 1997 magnetic cloud event. Distinct magnetospheric boundaries derived from the model are mapped down to the ionosphere and compared to UVI imag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5c90bed8b84b3646c64c8cd261cdeb0
https://doi.org/10.1029/98gl01066
https://doi.org/10.1029/98gl01066
Publikováno v:
Geophysical Research Letters. 25:2577-2580
On January 10, 1997, a magnetic cloud originating at the Sun was incident on the Earth. The initial disturbance to the magnetosphere, as reflected in the activities of the aurora, was measured by the Ultraviolet Imager on the Polar Spacecraft. During
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a004d24579749163b910cb41e4efa95
https://doi.org/10.1029/98gl00647
https://doi.org/10.1029/98gl00647
Autor:
D. Lummerzheim, M. Brittnacher, D. Evans, G. A. Germany, G. K. Parks, M. H. Rees, J. F. Spann
Publikováno v:
Geophysical Research Letters. 24:987-990
The ultraviolet imager (UVI) on board the POLAR satellite offers the opportunity to obtain high time resolution global auroral images. The spectral discrimination of the imager is sufficient to separate the auroral far ultraviolet emissions from the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8d6bdadc17b0d710999e9e58d90851e
https://doi.org/10.1029/96gl03828
https://doi.org/10.1029/96gl03828
Autor:
G. A. Germany, G. K. Parks, M. Brittnacher, J. Cumnock, D. Lummerzheim, J. F. Spann, L. Chen, P. G. Richards, F. J. Rich
Publikováno v:
Geophysical Research Letters. 24:995-998
Ultraviolet auroral images from the Ultraviolet Imager (UVI) onboard the POLAR satellite can be used as quantitative remote diagnostics of the auroral regions, yielding estimates of incident energy characteristics, compositional changes, and other hi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::376584a6b4554b3794b6467bff69f027
https://doi.org/10.1029/97gl00864
https://doi.org/10.1029/97gl00864
Autor:
G. A. Germany, J. F. Spann, G. K. Parks, M. J. Brittnacher, R. Elsen, L. Chen, D. Lummerzheim, M. H. Rees
Publikováno v:
Geospace Mass and Energy Flow
Because of the importance of the auroral regions as a remote diagnostic of near-Earth plasma processes and magnetospheric structure, spacebased instrumentation for imaging the auroral regions have been designed and operated for the last twenty-five y
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60dba6d47250304f19120e828507b827
https://doi.org/10.1029/gm104p0149
https://doi.org/10.1029/gm104p0149
Autor:
G. A. Germany, G. K. Parks, M. J. Brittnacher, J. F. Spann, J. Cumnock, D. Lummerzheim, F. Rich, P. G. Richards
Publikováno v:
Geospace Mass and Energy Flow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1cb879281621406d6cda2b78bc36fd1d
https://doi.org/10.1029/gm104p0143
https://doi.org/10.1029/gm104p0143