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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국우주과학회 Journal of Astronomy and Space Sciences Journal of Astronomy and Space Sciences 제32권 제4호
- 발행연도
- 2015.12
- 수록면
- 327 - 333 (7page)
- DOI
- http://dx.doi.org/10.5140/JASS.2015.32.3.189
이용수
초록· 키워드
오류제보하기
Previously, all-sky airglow images observed at Shigaraki (34.9° N, 136.1° E), Japan, during 2004 and 2005 were analyzed in relation to those observed at Mt. Bohyun (36.2° N, 128.9° E) for a comparison of their gravity wave characteristics (Kim et al. 2010). By applying the same selection criteria of waves and cloud coverages as in the case of Mt. Bohyun all-sky images, we derived apparent wavelengths, periods, phase velocities, and monthly occurrence rates of gravity waves at Shigaraki in this study. The distributions of wavelengths, periods, and speeds derived for Shigaraki were found to be roughly similar to those for Mt. Bohyun. However, the overall occurrence rates of gravity waves at Shigaraki were 36% and 34% for OI 557.7 nm and OH Meinel band airglow layers, respectively, which were significantly higher than those at Mt. Bohyun.
The monthly occurrence rates did not show minima near equinox months, unlike those for Mt. Bohyun. Furthermore, the seasonal preferential directions that were clearly apparent for Mt. Bohyun were not seen in the wave propagation trends for Shigaraki. These differences between the two sites imply different origins of the gravity waves near the Korean peninsula and the Japanese islands. The gravity waves over the Japanese islands may originate from sources at various altitudes; therefore, wind filtering may not be effective in causing any seasonal preferential directions in the waves in the airglow layers. Our analysis of the Shigaraki data supports recent theoretical studies, according to which gravity waves can be generated from in situ sources, such as mesosphere wind shear or secondary wave formation, in the mesosphere.
목차
등록된 정보가 없습니다.
참고문헌 (12)
참고문헌 신청
Chamberlain JW / 1961 / Physics of the Aurora and Airglow, in International Geophysics Series, vol. 2 / Academic Press
Chung JK / 2005 / Observations of upper atmospheric phenomena with ground-based instruments
F. J. Garcia / 1997 / Two-dimensional spectral analysis of mesospheric airglow image data / Applied Optics 36(29):7374
James H. Hecht / 1991 / Observations of the OH Meinel (6,2) and O 2 atmospheric (0,1) Nightglow emissions from Maui during the ALOHA-90 Campaign / Geophysical Research Letters 18(7):1341~1344
김용하 / 2010 / Seasonal Variations of Mesospheric Gravity Waves Observed with an Airglow All-sky Camera at Mt. Bohyun, Korea (36° N) / Journal of Astronomy and Space Sciences 27(3):181~188
Chung JK / 2005 / Observations of upper atmospheric phenomena with ground-based instruments
F. J. Garcia / 1997 / Two-dimensional spectral analysis of mesospheric airglow image data / Applied Optics 36(29):7374
James H. Hecht / 1991 / Observations of the OH Meinel (6,2) and O 2 atmospheric (0,1) Nightglow emissions from Maui during the ALOHA-90 Campaign / Geophysical Research Letters 18(7):1341~1344
김용하 / 2010 / Seasonal Variations of Mesospheric Gravity Waves Observed with an Airglow All-sky Camera at Mt. Bohyun, Korea (36° N) / Journal of Astronomy and Space Sciences 27(3):181~188
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