Ion equatorial distributions from ENA images obtained by IMAGE during geomagetic storms: Drift of Ion Flux

Details Ion equatorial distributions from ENA images obtained by IMAGE during geomagetic storms: Drift of Ion Flux Ion equatorial distributions from ENA images obtained by IMAGE during geomagetic storms: Drift of Ion Flux

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusmsm22a..11z&link_type=abstract

American Geophysical Union, Spring Meeting 2002, abstract #SM22A-11

Physics

2720 Energetic Particles, Trapped, 2730 Magnetosphere: Inner, 2760 Plasma Convection, 2778 Ring Current, 2788 Storms And Substorms

Scientific paper

Energetic neutral atom (ENA) images in the energy range of 1 - 60 keV are being obtained by the medium and high energetic neutral atom (MENA/HENA) imagers on board the IMAGE satellite. These ENA emissions reveal the ion distribution and its evolution during geomagnetic storms and/or substorms. During the development of magnetospheric storms and/or substorms, the ENA enhancements associated with magnetic field dipolarizations and inward plasma injections are also observed by geosynchronous LANL satellites (1989-046, 1990-095, 1991-080, 1994-084, LANL-97A) and GOES (GOES-8 and GOES-10), and in the proton aurora as observed by the far ultra violet (FUV) imager on board IMAGE. The ion equatorial pitch angle distributions have been extracted from the MENA and HENA images for the time periods in June 10, 2000, August 12, 2000 and Octber 4,2002. We will show deconvolved results that illustrate energy-dependent drift patterns and present comparisons with observations from the geosynchronous satellites and the FUV imager. Simulations of ion trajectories will be used to interpret features observed in the trapped ion flux.

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