Accession Number : AD0616926

Title :   THEORETICAL AND EXPERIMENTAL INVESTIGATIONS OF AURORA AND RELATED PHENOMENA.

Descriptive Note : Final rept. for 7 Mar 58-31 Dec 62,

Corporate Author : CENTER FOR ATMOSPHERIC AND SPACE PHYSICS UNIV OF MARYLAND COLLEGE PARK

Personal Author(s) : Bettinger,Richard T.

Report Date : JUN 1965

Pagination or Media Count : 46

Abstract : An ultrasensitive microbarograph was developed for use in an experimental investigation of extraterrestrial shock waves incident on the lower atmosphere. These instruments have a full scale sensitivity of less than one dyne/sq cm and a frequency range from DC to approximately 10 cycles/sec. High altitude balloon flight tests indicate that these microbarograph perform properly; nevertheless, the experimental program had to be abandoned since the small osciallatory motions of the balloons at floating altitudes cause pressure fluctuation which were orders of magnitudes larger than those associated with the physical phenomenon under investigation (0.01 to 0.001 dynes/sq cm). Optical studies of an artificially induced sodium cloud in the upper atmosphere by means of a Fabry-Perot Interferometer were undertaken. The object of this investigation was to determine vertical temperature profiles from an observation of the Doppler broadening of the sodium D-lines. This effort was unsuccessful due to insufficient radiation intensity for the detector employed. (Author)

Descriptors :   (*AURORAE, ATMOSPHERIC SOUNDING), (*MICROBAROMETRIC WAVES, MEASUREMENT), (*ATMOSPHERIC SOUNDING, MICROBAROMETRIC WAVES), (*METEOROLOGICAL INSTRUMENTS, ATMOSPHERIC SOUNDING), SOLAR WIND, SHOCK WAVES, SODIUM, CLOUDS, UPPER ATMOSPHERE, OPTICAL PROPERTIES, BALLOONS

Distribution Statement : APPROVED FOR PUBLIC RELEASE