High resolution measurements of OH infrared airglow structure
Thesis/Dissertation
·
OSTI ID:6931425
Disturbances in the normally calm atmospheric airglow layer, which causes bright and dark bands or stripes to appear, have been observed. These disturbances are attributed to gravity waves propagating through the atmosphere. An instrument capable of resolving the temporal, spatial, and spectral attributes of OH infrared emissions was designed to gather quantitative data on airglow structure. An optically-compensated interferometer-spectrometer was chosen as the basic instrument to measure this phenomenon. This high throughput instrument (0.285 cm/sup 2/ sr) is an order of magnitude more sensitive than more conventional spectrometers having a noise equivalent spectral radiance of 16 R/cm/sup -1/ at 1.5 ..mu..m. A spectral resolution of 2 cm/sup -1/ was obtained. The high throughput of the optically-compensated interferometer makes possible temporal resolution as short as 30 seconds. A bright OH Meinel airglow structure event was recorded on June 15, 1983 from an observation site located at Sacramento Peak, New Mexico. The structures were measured at elevation angles near the horizon. Apparent wavelengths, periods, and phase velocities, of 24 +/- 1 km, 14 +/- 1 minutes, and 28 +/- 2 meters/second, respectively, were calculated for the record structure.
- Research Organization:
- Utah State Univ., Logan (USA)
- OSTI ID:
- 6931425
- Country of Publication:
- United States
- Language:
- English
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