Accession Number : ADA188599

Title :   Spectrophotometric Remote Sensing of the Diffuse Aurora.

Descriptive Note : Final rept. 1 Aug 79-30 Nov 87,

Corporate Author : LOCKHEED MISSILES AND SPACE CO INC PALO ALTO CA PALO ALTO RESEARCH LAB

Personal Author(s) : Vondrak, R R ; Robinson, R M

PDF Url : ADA188599

Report Date : 30 Nov 1987

Pagination or Media Count : 20

Abstract : Auroral electron precipitation produces both E-region ionization and bremsstrahlung X-rays. In a set of coordinated observations these atmospheric effects of electron precipitation were measured simultaneously by the X-ray sensor on the DMSP/F2 spacecraft and by the incoherent-scatter radar at Chatanika, Alaska. In all data sets there was good agreement between the locations of the X-ray source regions and the regions of enhanced E-region ionization. Detailed comparisons were made between the measured and inferred altitude profiles of ionization for two auroral conditions, a premidnight auroral band and a sunlit diffuse aurora. These comparisons validate the ability to infer auroral ionization from satellite-based X-ray measurements.

Descriptors :   *AURORAE, *BREMSSTRAHLUNG, *IONIZATION, *SPECTROPHOTOMETRY, ALTITUDE, ARTIFICIAL SATELLITES, DATA BASES, DETECTORS, DIFFUSION, E REGION, ELECTRONS, INCOHERENT SCATTERING, MEASUREMENT, PRECIPITATION, PROFILES, REMOTE DETECTORS, SOURCES, SUNLIGHT, X RAYS

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE