An Investigation of Atmospheric Emissions in Ultraviolet, Vacuum Ultraviolet and Extreme Ultraviolet Wavelengths
Abstract
The research had three objectives: 1) to understand the morphology of atmospheric optical UV emissions over the polar region associated with the solar and magnetospheric particle precipitations, 2) to understand the morphology of the middle and low latitude airglow, and 3) to investigate the UV background of the atmospheric emissions for possible application for remote sensing. The focus of data analysis started on UV and FUV spectra taken from the polar-orbiting S3- 4 satellite. To this date, the S3-4 has provided the only satellite measurement with the composite data set of the FUV (sometimes called Vacuum Ultraviolet) and UV wavelength regions. The S3-4 data set is suitable for the analyses of diffuse auroral emissions, and the study revealed the characteristic wavelength which can be used for remote-sensing and 2-D image in the auroral precipitating electron energetics. The comparison of our observation to a transport model calculation, led to the contribution of defining some atmospheric constants currently in debate. The close examination of anomalous emission spectra led to the discovery of the UV spectra caused by energetic O+ precipitation. Finally, the Doppler shift of proton auroral La was observed for the first time.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1989
- Accession Number
- ADA212169
Entities
People
- Ching-i. Meng
Organizations
- Johns Hopkins University