Japan Geoscience Union Meeting 2014

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Symbol P (Space and Planetary Sciences) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM36_28PM1] Physics and Chemistry in the Atmosphere and Ionosphere

Mon. Apr 28, 2014 2:15 PM - 4:00 PM 312 (3F)

Convener:*Yuichi Otsuka(Solar-Terrestrial Environment Laboratory, Nagoya University), Takuya Tsugawa(National Institute of Information and Communications Technology), Seiji Kawamura(National Institute of Information and Communications Technology), Chair:Tatsuhiro Yokoyama(National Institute of Information and Communications Technology), Mitsuru Matsumura(Center for Space Science and Radio Engineering, University of Electro-Communications)

2:45 PM - 3:00 PM

[PEM36-17] Analysis of the airglow structures using the simultaneous observations by ISS-IMAP and all-sky imagers

*Hideko YUKINO1, Akinori SAITO1, Yuichi OTSUKA2, Takeshi SAKANOI3 (1.Dept. of Geophysics, Kyoto Univ., 2.STEL, Nagoya Univ., 3.Grad. School of Science, Tohoku Univ.)

Keywords:airglow, plasma bubble, ISS-IMAP

The spatial structure of the atmospheric gravity waves in the mesosphere was analyzed using the simultaneous observational data of ISS-IMAP and the all-sky imager at Hawaii. There are a plenty of ground-based observations of the atmospheric gravity waves in the mesosphere and the thermosphere. The problem of the ground-based observation is that it cannot distinguish spatial variations from temporal variations for the structures whose scale size is larger than its field-of-view. ISS-IMAP was launched on July 21, 2012 to observe the atmospheric gravity waves whose scale size is larger than 100 km. The altitude of the International Space Station (ISS) flies around 400 km altitude, and its orbital inclination angle is 51.6 degrees. ISS-IMAP/VISI (Visible-light and infrared Spectrum Imager) observes the airglow in the mesosphere and the ionosphere. The spatial resolution of the VISI imaging observation is from 10 km to 25 km. The airglow wavelengths observed by VISI are 630 nm, 730 nm, and 762 nm and by the ground-based all-sky image of Hawaii (20.48 N, 156.2 W) are 630 nm and 557.7-nm with 5.5 minutes interval. The observational data of ISS-IMAP/VISI and an all-sky imager in Hawaii were investigated for the nights when VISI made the observation over Hawaii, and the sky over the imager was clear. The night when the plasma bubble was detected by the ground-based all-sky imager, the plasma bubble was detected by the 630nm airglow observation of ISS-IMAP/VISI. The spatial and vertical structures of the airglow that were observed by the ground-based imager and the ISS-IMAP/VISI were analyzed. The sensitivity of the observation of ISS-IMAP/VISI will also be discussed in the comparison of the ground-based observation.