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| Titel |
Atmospheric wave induced O2 and OH airglow intensity variations: effect of vertical wavelength and damping |
| VerfasserIn |
H. Takahashi, A. Onohara, K. Shiokawa, F. Vargas, D. Gobbi |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 29, no. 4 ; Nr. 29, no. 4 (2011-04-07), S.631-637 |
| Datensatznummer |
250016999
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| Publikation (Nr.) |
 copernicus.org/angeo-29-631-2011.pdf |
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| Zusammenfassung |
| From nocturnal variations of the airglow O2 (0-1) and OH Meinel (6-2)
band emission intensity and the rotational temperature, gravity waves and
the damping effect in the MLT region were investigated. The data set was obtained
from photometer measurements at Rikubetsu (43.5° N, 143.8° E), Japan,
from March 2004 to August 2005. The ratio of the amplitude of oscillation
and their phase difference between the two emissions were calculated when
simultaneous periodic variations were observed. The ratio showed a linear
correlation with the phase difference. The vertical wavelength and damping rate
were estimated by using a model calculation carried out by previous works.
The results show that the wave damping is significant when the vertical
wavelength is shorter than 30–40 km. Krassovsky's parameter η, which
represents a ratio between the emission intensity and temperature
oscillations, was also calculated. The results show that the η also
depends on the damping effect. |
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