Zobrazeno 1 - 10
of 136
pro vyhledávání: '"M. Pinnock"'
Autor:
M. L. Parkinson, M. Pinnock, J. A. Wild, M. Lester, T. K. Yeoman, S. E. Milan, H. Ye, J. C. Devlin, H. U. Frey, T. Kikuchi
Publikováno v:
Annales Geophysicae, Vol 23, Pp 1371-1390 (2005)
Earthward injections of energetic ions and electrons mark the onset of magnetospheric substorms. In the inner magnetosphere (L4), the energetic ions drift westward and the electrons eastward, thereby enhancing the equatorial ring current. Wave-par
Externí odkaz:
https://doaj.org/article/970d9f3bd08649a983a49e870b12b170
Publikováno v:
Annales Geophysicae, Vol 22, Pp 4243-4258 (2004)
This study presents, for the first time, detailed spatiotemporal measurements of the reconnection electric field in the Northern Hemisphere ionosphere during an extended interval of northward interplanetary magnetic field. Global convection mapping
Externí odkaz:
https://doaj.org/article/7ae08a6e41824a54923a570bf6bcc2de
Publikováno v:
Annales Geophysicae, Vol 22, Pp 4103-4122 (2004)
Super Dual Auroral Radar Network (DARN) radars often detect a distinct transition in line-of-sight Doppler velocity spread, or spectral width, from –1 at lower latitude to >200ms–1 at higher latitude. They also detect a similar boundary, namely
Externí odkaz:
https://doaj.org/article/fb007f1d16784fa8bac62b3ac4fc24bc
Publikováno v:
Annales Geophysicae, Vol 21, Pp 1467-1482 (2003)
Using ionospheric data from the SuperDARN radar network and a DMSP satellite we obtain a comprehensive description of the spatial and temporal pattern of day-side reconnection. During a period of southward interplanetary magnetic field (IMF), t
Externí odkaz:
https://doaj.org/article/26dfcb8e16c34a67ba81dd610d2b4214
Autor:
M. L. Parkinson, M. Pinnock, H. Ye, M. R. Hairston, J. C. Devlin, P. L. Dyson, R. J. Morris, P. Ponomarenko
Publikováno v:
Annales Geophysicae, Vol 21, Pp 893-913 (2003)
A -190-nT negative bay in the geomagnetic X component measured at Macquarie Island ( -65° L) showed that an ionospheric substorm occurred during 09:58 to 11:10 UT on 27 February 2000. Signatures of an auroral westward flow channel (AWFC) were
Externí odkaz:
https://doaj.org/article/f019c56fde674e6aade4cec5548025b1
Publikováno v:
Annales Geophysicae, Vol 20, Pp 1769-1781 (2002)
The HF radars of the Super Dual Auroral Radar Network (SuperDARN) provide measurements of the E × B drift of ionospheric plasma over extended regions of the high-latitude ionosphere. We have conducted a statistical study of the associated Dopp
Externí odkaz:
https://doaj.org/article/160fd6ed083940ff9fe92fc383152312
Publikováno v:
Annales Geophysicae, Vol 20, Pp 1783-1793 (2002)
This study investigates further the relationship between regions of the magnetosphere and the characteristics of HF radar Doppler spectra recorded in the ionospheric projection of those regions. It builds on earlier work, which has reported a
Externí odkaz:
https://doaj.org/article/ba85f00e9f07413988398ffd5d5c2f19
Autor:
M. L. Parkinson, P. L. Dyson, M. Pinnock, J. C. Devlin, M. R. Hairston, E. Yizengaw, P. J. Wilkinson
Publikováno v:
Annales Geophysicae, Vol 20, Pp 1617-1630 (2002)
The geomagnetic conditions were moderately disturbed (Kp = 2) during magnetic midnight on 10 December 1999, when the Tasman International Geospace Environment Radar (TIGER), a Southern Hemisphere HF SuperDARN radar, observed a persistent, sharp
Externí odkaz:
https://doaj.org/article/d43acc62054844558d8f2952138fecb1
Autor:
G. Chisham, M. Pinnock
Publikováno v:
Annales Geophysicae, Vol 20, Pp 13-28 (2002)
Global convection mapping using line-of-sight Doppler velocity data from the Super Dual Auroral Radar Network (SuperDARN) is now an accepted method of imaging high-latitude ionospheric convection. This mapping process requires that the flow mea
Externí odkaz:
https://doaj.org/article/1d5b3786e092434780e5cddafd8b688f
Publikováno v:
Annales Geophysicae, Vol 20, Pp 29-40 (2002)
The HF radar Doppler spectral width boundary (SWB) in the cusp represents a very good proxy for the equatorward edge of cusp ion precipitation in the dayside ionosphere. For intervals where the Interplanetary Magnetic Field (IMF) has a southwar
Externí odkaz:
https://doaj.org/article/cf108ba17d3e4e9ba337c6e179bfb6bb