Multi-Instrument Observations of Ionospheric Outflow in Response to the Storm Events of 14-24 April 2002

Details Multi-Instrument Observations of Ionospheric Outflow in Response to the Storm Events of 14-24 April 2002 Multi-Instrument Observations of Ionospheric Outflow in Response to the Storm Events of 14-24 April 2002

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsa12a..08k&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #SA12A-08

Physics

2704 Auroral Phenomena (2407), 2736 Magnetosphere/Ionosphere Interactions, 2784 Solar Wind/Magnetosphere Interactions

Scientific paper

The major storm events of 14-24 April 2002, initiated by several solar disturbances, produced significant enhancements in many regions within the terrestrial magnetosphere. In particular, we investigate the ionospheric response to such disturbances as observed by close orbiting spacecraft. Data will be presented from the LENA imager on the IMAGE spacecraft, the TIDE instrument on Polar and the ion spectrometer on the four Cluster spacecraft. All the instruments observe outflow on the 18th April 2002, although the orbits of the spacecraft are such that the timings of the outflow are not simultaneous. Nevertheless, the magnetosphere is highly disturbed at this time due to the arrival of interplanetary shocks and the storm activity as a result. In this study we present the observations from the three spacecraft and make an attempt to place these observations into context with the large-scale Sun-Earth interaction which has taken place. The outflow events are most likely a result of the enhanced magnetospheric activity, though we try to relate the event to particular features observed in both the solar wind and the inner magnetosphere.

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