HR: 1340h
AN: SA13A-1084 [Abstracts]
TI: Side-viewing observations of OI(1D) and OH night airglows by ISUAL
AU: * Chiang, C
EM: johnson@phys.ncku.edu.tw
AF: Physics Department, National Cheng Kung University, No.1, University Road, Tainan City,
70101, Taiwan
AU: Chang, T
EM: jocelyn@pssc.ncku.edu.tw
AF: Physics Department, National Cheng Kung University, No.1, University Road, Tainan City,
70101, Taiwan
AU: Chang, T
EM: jocelyn@pssc.ncku.edu.tw
AF: Plasma and Space Science Center, No.1, University Road, Tainan City, 70101, Taiwan
AU: Huang, T
EM: tuh4@psu.edu
AF: The Pennsylvania State University, Lehigh Valley, 8380 Mohr Lane, Fogelsville, PA 18051,
United States
AU: Wu, Y
EM: jtw@phys.ncku.edu.tw
AF: Physics Department, National Cheng Kung University, No.1, University Road, Tainan City,
70101, Taiwan
AU: Chen, A B
EM: alfred@phys.ncku.edu.tw
AF: Physics Department, National Cheng Kung University, No.1, University Road, Tainan City,
70101, Taiwan
AU: Chen, A B
EM: alfred@phys.ncku.edu.tw
AF: Plasma and Space Science Center, No.1, University Road, Tainan City, 70101, Taiwan
AU: Hsu, R
EM: rrhsu@phys.ncku.edu.tw
AF: Physics Department, National Cheng Kung University, No.1, University Road, Tainan City,
70101, Taiwan
AU: Su, H
EM: htsu@phys.ncku.edu.tw
AF: Physics Department, National Cheng Kung University, No.1, University Road, Tainan City,
70101, Taiwan
AB:
Optical and side-viewing images obtained from airglow surveys by ISUAL/FORMOSAT-2 often showed local
enhancements in the F region and in the 90 km OH-layer. Detailed inspection of the latitudinal distributions of
airglows in these two layers indicates the enhancements may be correlated. In some cases, the enhancements
fell on two sides of the magnetic equator and could have been invoked by the Equatorial Ionization Anomaly (EIA)
effect with an additional displacement contributed by the wind field. However in most cases, the cause(s) are far
from clear. In addition, nonuniform luminescence, called spread F, was often observed in the pre-midnight
regions and appears to exhibit longitudinal and seasonal variations. In the paper, the possible mechanisms of
the enhancements will be discussed systematically.
DE: 2419 Ion chemistry and composition (0335)
DE: 2437 Ionospheric dynamics
DE: 2439 Ionospheric irregularities
DE: 2467 Plasma temperature and density
SC: SPA-Aeronomy [SA]
MN: 2007 Fall Meeting