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

Details 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 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

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsa21a0276c&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SA21A-0276

Astronomy and Astrophysics

Astronomy

0310 Airglow And Aurora, 2407 Auroral Ionosphere (2704), 2427 Ionosphere/Atmosphere Interactions (0335), 2435 Ionospheric Disturbances

Scientific paper

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.

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