HR: 0800h
AN: SA21A-0276    [Abstracts]
TI: Enhancements of OI 630.0 nm Emission And Ionospheric Tomography Using GPS STEC Measurements During the Period of the Strong Geomagnetic Storm, 2003 Halloween Event in Korea
AU: * Chung, J
EM: jkchung@ucar.edu
AF: High Altitude Observatory, National Center of Atmospheric Research, 3080 Center Green Dr. CG1, Boulder, CO 80307-3000 United States
AU: Choi, B
EM:
AF: Space Geodesy Research Group, Korea Astronomy & Space Science Institute, 61-1 Whaam-Dong Yusung-Gu, Daejeon, 305-348 Korea, Republic of
AU: Kim, Y
EM:
AF: Dept. of Astronomy & Space Science, Chungnam National University, 220 Gund-Dong, Yuseong-Gu, Daejeon, 305-764 Korea, Republic of
AU: Wu, Q
EM:
AF: High Altitude Observatory, National Center of Atmospheric Research, 3080 Center Green Dr. CG1, Boulder, CO 80307-3000 United States
AU: Park, J
EM:
AF: Space Geodesy Research Group, Korea Astronomy & Space Science Institute, 61-1 Whaam-Dong Yusung-Gu, Daejeon, 305-348 Korea, Republic of
AU: Won, Y
EM:
AF: Dept. of Physical Sciences, Embry-Riddle Aeronautical University, 600 S. Clyde Morris Boulevard, Daytona Beach, FL 32114 United States
AU: Pyo, Y
EM:
AF: Radio Research Laboratory, #1 Wonhyoro 3Ga, Yongsan-Gu, Seoul, 430-082 Korea, Republic of
AB: All-sky camera and GPS measurements were used to investigate the thermosphere and ionosphere during the strong geomagnetic storm period of the 28-31 October 2003. Enhancement in 630.0 nm emission was observed in the northern sky from all-sky images taken at Mt. Bohyun (36.2° N, 128.9° E, geomagnetic latitude = 29°), Korea at 17:48-18:58 UT on 29 October during the main phase of the geomagnetic storm. We show the vertical variation of electron density between 28 and 31 October 2003. The vertical profiles of electron distribution have been examined by the computerized tomographic method using Algebraic Reconstruction Technique (ART). The slant total electron contents (STEC) for ionospheric tomography were measured at the regional GPS reference network of the nine stations that have been operated by Korea Astronomy & Space Science Institute (KASI). The results of ionospheric tomography are compared with Ionosonde measurements and IRI-2001 model. The possible cause of enhancement in 630.0 nm emission and the variation of electron density during the period of the geomagnetic storm will be discussed.
DE: 0310 Airglow and aurora
DE: 2407 Auroral ionosphere (2704)
DE: 2427 Ionosphere/atmosphere interactions (0335)
DE: 2435 Ionospheric disturbances
SC: SPA-Aeronomy [SA]
MN: Fall Meeting 2005