HR: 14:40h
AN: SM52C-04    [PDF]
TI: Plasmaspheric plumes: CRRES observations
AU: * Howard, J
EM: iamjohnahoward@hotmail.com
AF: Loyola Marymount University, Dept of Physics, Los Angeles, CA 90045-8227 United States
AU: Moldwin, M B
EM: mmoldwin@igpp.ucla.edu
AF: UCLA, IGPP Box 951567, Los Angeles, CA 90095-1567 United States
AU: Sanny, J
EM: jsanny@msn.com
AF: Loyola Marymount University, Dept of Physics, Los Angeles, CA 90045-8227 United States
AU: Rassoul, H K
EM: rassoul@pss.fit.edu
AF: Florida Institute of Technology, Department of Physics and Space Sciences, Melbourne, FL 32901 United States
AU: Anderson, R R
EM: roger-r-anderson@uiowa.edu
AF: University of Iowa, Department of Physics and Astronomy, Iowa City, IA 52242 United States
AB: CRRES plasma wave receiver density data were used to study the distribution and properties of dense plasmaspheric-like plasma observed outside the plasmapause. Our study indicates that outer plasmaspheric structure, often called plasmaspheric plumes, blobs, or detached plasma regions exist at all local times under all levels of geomagnetic activity. Of the 549 CRRES orbits that had at least one clearly defined plasmapause, 201 (or 36.6%) had plasmaspheric-like density structures at higher L shells than the plasmapause. Most of the occurrence of plasmaspheric-like plasma observed by CRRES was in the noon-to-dusk sector and was observed following moderate geomagnetic activity.
DE: 2730 Magnetosphere--inner
DE: 2736 Magnetosphere/ionosphere interactions
DE: 2740 Magnetospheric configuration and dynamics
DE: 2768 Plasmasphere
SC: SPA - Magnetospheric Physics [SM]
MN: 2003 Fall Meeting