Accession Number : ADP006272

Title :   Space-Time Structure of Auroral Radio Absorption Events Observed with the Imaging Riometer at South Pole,

Corporate Author : MARYLAND UNIV COLLEGE PARK INST FOR PHYSICAL SCIENCE AND TECHNOLOGY

Personal Author(s) : Hargreaves, J. K. ; Detrick, D. L. ; Rosenberg, T. J.

Report Date : 03 MAY 1990

Pagination or Media Count : 6

Abstract : An imaging riometer system comprising 49 independent beams has been operating at South Pole station since January, 1988. A study of intense, short-duration events from the pre-midnight sector has defined their typical shape as elliptical, with axial ratio 2.3 oriented along the local L-shell. The space-time evolution shows rapid intensifications of the moving absorption patches.

Descriptors :   *POLAR CAP ABSORPTION, AURORAE, RIOMETERS, IONOSPHERIC PROPAGATION, RADIOFREQUENCY, RADIATION ABSORPTION, RADIO WAVES.

Subject Categories : Atmospheric Physics
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE