HR: 1340h
AN: SA33A-1134    [Abstracts]
TI: Studies in Equatorial Anomaly Morphology from 2002-03 GUVI Data
AU: * Henderson, S
EM: sidh@cc.usu.edu
AF: Electrical and Computer Engineering Department, 4120 Old Main Hill, Logan, UT 84322 United States
AU: Fejer, B
EM: bfejer@cc.usu.edu
AF: Department of Physics, 4415 Old Main Hill, Logan, UT 84322 United States
AU: Swenson, C
EM: charles.swenson@ece.usu.edu
AF: Electrical and Computer Engineering Department, 4120 Old Main Hill, Logan, UT 84322 United States
AB: The Global Ultraviolet Imager on NASA's TIMED spacecraft is currently mapping ionospheric radiation at six different wavelengths across the earth. Images created using the optically thin OI 135.6 nm line that is excited by nighttime recombination of O+ ions contain clear signatures of the equatorial anomaly (EA) as well as equatorial plasma bubble (EPB) structures. These intensity observations are related to the squared plasma density and thus provide insight into plasma transport. Extensive results from studies in quiet time EA morphology using GUVI data from 2002-03 are presented. Noted features include the strength of the anomaly, crest position, and EPB occurrence rates with dependencies on the zonal sector, local time, season, and solar cycle. The analysis is then extended to storm dependent morphology.
DE: 2415 Equatorial ionosphere
SC: SPA-Aeronomy [SA]
MN: 2004 AGU Fall Meeting