Correlative Study of High- and Low-Altitude Whistler Wave Observations and Radiation Belt Structure

Details Correlative Study of High- and Low-Altitude Whistler Wave Observations and Radiation Belt Structure Correlative Study of High- and Low-Altitude Whistler Wave Observations and Radiation Belt Structure

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusmsm31a..05f&link_type=abstract

American Geophysical Union, Spring Meeting 2005, abstract #SM31A-05

Physics

2716 Energetic Particles, Precipitating, 2720 Energetic Particles, Trapped, 2730 Magnetosphere: Inner, 2768 Plasmasphere, 2772 Plasma Waves And Instabilities

Scientific paper

It is known that whistler mode waves permeate the plasmasphere in the form of plasmaspheric hiss, although their origin has been a controversy for many years. Whistler waves are believed to be generated either by storm/substorm-injected energetic electrons interacting with the cold plasmaspheric plasma or by escaping spherics from atmospheric lightning. Because of the apparent connection of plasmaspheric hiss to the loss processes of radiation-belt particles and to regulating the belt structure, the origin and distribution of plasmaspheric hiss remain a topic of high interest, particularly for space weather investigations. In the present study, we investigate the possible relationship between plasmaspheric hiss characteristics observed by the wave instruments on the Dynamics Explorer-1 and IMAGE spacecraft at high altitudes (> 1000 km) and lightning activities at low altitudes or on the ground. Results from this study will be discussed in the context of observed radiation belt structure.

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