Accession Number : AD0699203

Title :   AURORAL LYMAN-ALPHA OBSERVATIONS,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Clark,Malcolm A.

Report Date : 25 OCT 1969

Pagination or Media Count : 31

Abstract : Observations have been made of Lyman-alpha auroral emissions during January and February 1967. The observations were made with a narrow-band sky-scanning photometer mounted on an earth-oriented satellite in polar orbit. Auroras in the southern hemisphere were usually single in structure, and those in the north, complex. The single auroral emissions show a typical latitude spread of about 6.5 deg. Intensities up to 60 kR were observed at times of high magnetic activity, implying energy deposition up to 20 ergs/sq cm/sec. The intensities show a correlation with high-latitude geomagnetic activity, with a breakdown during extremely active periods. (Author)

Descriptors :   (*AURORAE, ULTRAVIOLET SPECTRA), PHOTOMETERS, SYNCHRONOUS SATELLITES, POLAR ORBIT TRAJECTORIES, PROTONS, MAGNETIC STORMS, (U)MAGNETIC STORMS

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE