HR: 0800h
AN: SM41A-1111    [Abstracts]
TI: A case study of relativistic electron events for their relationship to substorm injections and ULF powers
AU: * Hwang, J
EM: jahwang@space.kaist.ac.kr
AF: SSL, KAIST, Department of Physics, Korea Advanced Institute of Science and Technology,, Daejon, 305-701 Korea, Republic of
AU: Min, K
EM: kwmin@space.kaist.ac.kr
AF: SSL, KAIST, Department of Physics, Korea Advanced Institute of Science and Technology,, Daejon, 305-701 Korea, Republic of
AU: Lee, E
EM: eslee@ssl.berkeley.edu
AF: SSL, UC Berkeley, Space Sciences Laboratory, University of California 7 Gauss Way, Berkeley, 94720-7450 United States
AU: Lee, C
EM: phylee@space.kaist.ac.kr
AF: SSL, KAIST, Department of Physics, Korea Advanced Institute of Science and Technology,, Daejon, 305-701 Korea, Republic of
AU: Lee, D
EM: dylee@chungbuk.ac.kr
AF: Chungbuk National University, Dept. of Astronomy and Space Science, College of Natural Sciences and Institute for Basic Science Research, Chungbuk National University, Cheong-ju, 361-763 Korea, Republic of
AB: We study the two storm events of 1997: the one in May that accompanied a relativistic electron event (REE) and the other in September which, with a more profound Dst decrease, showed no significant flux increase of relativistic electrons. We find a larger amount of seed electrons is present in the May event compared to that of the September storm while the ULF power is more enhanced and the particle spectrum harder in the September event. Hence, we demonstrate that a larger storm does not necessarily produce more seed electrons and the amount of seed electrons is an important factor of an apparent increase in REE flux levels, while ULF can harden particle spectra without causing an apparent REE.
DE: 2716 Energetic particles, precipitating
DE: 2720 Energetic particles, trapped
DE: 2731 Magnetosphere--outer
DE: 2788 Storms and substorms
DE: 2799 General or miscellaneous
SC: SPA-Magnetospheric Physics [SM]
MN: 2004 AGU Fall Meeting