Enhancement of OI 630.0 nm emission at mid-latitudes during an intense magnetic storm |
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| Affiliation: | 1. High Altitude Observatory, NCAR, Boulder, CO 80307-3000, USA;2. Department of Astronomy and Space Science, Chungnam National University, Daejeon 305-764, Republic of Korea;3. Department of Physical Sciences, Embry-Riddle Aeronautical University Daytona Beach, FL 32114, USA;4. Space Geodesy Division, Korea Astronomy and Space Science Institute, Daejeon 305-348, Republic of Korea;1. Dept. of Physics, Kyungpook National University, Daegu 41566, Republic of Korea;2. Inst. for Phys. Sci. and Tech, University of Maryland, College Park, MD 20742, USA;3. Dept. of Physics, University of Maryland, College Park, MD 20742, USA;4. Dept. of Physics, Penn State University, University Park, PA 16802, USA;5. Dept. of Physics, Sungkyunkwan University, Suwon 16419, Republic of Korea;6. Laboratoire de Physique Subatomique et de Cosmologie, UJF-CNRS/IN2P3-INP, 53, rue des Martyrs, 38026 Grenoble Cedex, France;7. Astrophysics Space Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA;8. Instituto de Fisica, Universidad Nacional Autonoma de Mexico, Circuito de la Investigacion s/n, Ciudad Universitaria, CP 04510 Mexico Distrito Federal, Mexico;9. Dept. of Physics & Geology, Northern Kentucky University, Highland Heights, KY 41076, USA;1. Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China;2. University of Chinese Academy of Sciences, Beijing 10047, China;3. Department of Geomatics Engineering, Bulent Ecevit University, Zonguldak 67100, Turkey;4. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;1. Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. Department of Geomatics Engineering, Bulent Ecevit University, Zonguldak 67100, Turkey;1. School of Electrical Engineering, Aalto University, Espoo, Finland;2. Space Technology Ireland, Ltd., NUI Maynooth, Co. Kildare, Ireland;1. Institute of Geophysics, Vietnam Academy of Science and Technology, A8, 18 Hoang Quoc Viet str., Cau Giay, Hanoi, Viet Nam;2. Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Viet Nam;3. Sorbonne Universités, UPMC Univ. Paris 06, UMR 7648, Laboratoire de Physique des Plasmas, F-75005 Paris, France;4. Electronic Navigation Research Institute, National Institute of Maritime, Port and Aviation Technology, 7-42-23 Jindaiji-Higashi, Chofu, Tokyo 182-0012, Japan;5. National Institute of Information and Communications Technology, 4-2-1 Nukui-kita, Koganei, Tokyo 184-8795, Japan;1. RWTH Aachen University, III Physikalisches Institut A, Aachen, Germany;2. INFN Bari and University of Bari, Bari, Italy;3. Peking University, Beijing, China;4. INFN Bologna and University of Bologna, Bologna, Italy;5. Universite Libre de Bruxelles, Brussels, Belgium;6. National Institute of Science Education and Research, Bhubaneswar;7. Institute for Particle and Nuclear Physics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, Budapest, Hungary;8. Academy of Scientific Research and Technology - Egyptian Network of High Energy Physics, ASRT-ENHEP, Cairo, Egypt;9. Helwan University & CTP, Cairo, Egypt;10. Texas A&M University, College Station, USA;11. Institute for Nuclear Research of the Hungarian Academy of Sciences (ATOMKI), Debrecen, Hungary;12. University of Delhi, Delhi, India;13. Wayne State University, Detroit, USA;14. Texas A&M University at Qatar, Doha, Qatar;15. Laboratori Nazionali di Frascati - INFN, Frascati, Italy;p. University of Florida, Gainesville, USA;q. Petersburg Nuclear Physics Institute, Gatchina, Russia;r. CERN, Geneva, Switzerland;s. Ghent University, Dept. of Physics and Astronomy, Ghent, Belgium;t. National Center for Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan;u. Saha Institute of Nuclear Physics, Kolkata, India;v. Lappeenranta University of Technology, Lappeenranta, Finland;w. University of California, Los Angeles, USA;x. Florida Institute of Technology, Melbourne, USA;y. Bhabha Atomic Research Centre, Mumbai, India;z. INFN Napoli, Napoli, Italy;11. INFN Pavia and University of Pavia, Pavia, Italy;12. IRFU CEA-Saclay, Saclay, France;13. Institute for Nuclear Research and Nuclear Energy, Sofia, Bulgaria;14. Sofia University, Sofia, Bulgaria;15. Korea University, Seoul, Republic of Korea;16. Seoul National University, Seoul, Republic of Korea;17. University of Seoul, Seoul, Republic of Korea;18. Institut Pluridisciplinaire - Hubert Curien (IPHC), Strasbourg, France |
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| Abstract: | All-sky camera (ASC), Global Positioning System (GPS), and ionosonde measurements were used to investigate the upper atmospheric variations at mid-latitude during the strong geomagnetic storm on October 29–31, 2003. An arc-shaped 630.0 nm emission was observed in the northern sky on all-sky images taken at Mt. Bohyun (36.2°N, 128.9°E, GMLAT=29°N) in Korea during 17:48–8:58 UT in the main phase of the geomagnetic storm on October 29. The NmF2 and hmF2 from the ionosonde show strong disturbances at that time. The vertical profiles of electron densities, calculated by the ionospheric tomographic method using ground-based GPS slant total electron contents measurements, show the largest value at ∼440 km height at 18:30 UT on October 29 when the enhancements of OI 630.0 nm emission were observed. The arc-shaped red emission observed during the main phase of the magnetic storm is likely a low-latitude red aurora due to its short duration of ∼1 h. The result implies that the plasmapause was at L=1.4–1.6 during the geomagnetic storm. The fact that the arc did not follow a constant L-value appears to suggest that neutral precipitation and a traveling ionospheric disturbance could also be the cause of the arc. |
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