Author: Parris Cornel Neal Publisher: ISBN: Category : Airglow Languages : en Pages : 534
Book Description
Disturbances in the normally calm atmosheric airglow layer, which cause 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. Spatial data were obtained by matching the interferometer's high throughput to a unique optical system which includes a 50-cm diameter telescope. This Dall Kirkham telescope maintains the large throughput of the interferometer but narrows the instrument field of view to less than a degree. The spatial resolution of the system is 14 milliradians. A bright OH Meinel airglow structure event was recorded. The structures were measured at elevation angles near the horizon. Apparent wavelengths, periods, and phase velocities, of 24 + or -1 km, 14 + or -1 minutes, and 28 + or -2 meters/second respectively, were calculated for the recorded structure.
Author: Parris Cornel Neal Publisher: ISBN: Category : Languages : en Pages : 224
Book Description
A bright OH Meinel airglow structure event was recorded on June 15, 1983 from Sacramento Peak, New Mexico. The MAPSTAR interferometer was operated in conjunction with low-light-level infrared imaging isocon camera system provided by the University of Southampton, England. The camera was co-aligned with the meter. The structures were measured at elevation angles near the horizon. Apparent wavelength, periods and phase velocities of 24 + or - 1 minutes, and 28 + or - 2 meters/second respectively, were calculated for the recorded structure. The interferometer data show intensity modulations of 20-40 percent within the structure. A mean rotational temperature of 165 degrees Kelvin was calculated using the interferometer spectral data and temperature modulations of 5 to 10 degrees Kelvin were recorded in phase with the intensity modulations. This report discusses the structure and performance of the MAPSTAR interferometer and telescope, as well as the results obtained using the sensor. Data collected shed new light on the phenomena under investigation and will provide a foundation for studies in the future.
Author: G. G. Shepherd Publisher: Academic Press ISBN: 9780126394818 Category : Medical Languages : en Pages : 358
Book Description
Traces the historical development of both spectral and imaging methods, placing them in a unified framework relevant to observations of the troposphere, stratosphere, mesosphere, and thermosphere.
Author: Parris Cornel Neal
Author: Parris Cornel Neal
Author: Edmond M. Dewan
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Author: United States Air Force Academy
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Author: 
Author: 
Author: G. G. Shepherd
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