Accession Number : AD0741784

Title :   Development, Installation, and Data Analysis for a Scanning VLF Research Receiver Employed at the Air Force Geopole Observatory, Thule, Greenland.

Descriptive Note : Final rept. 15 Dec 70-15 Dec 71,

Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK ORDNANCE RESEARCH LAB

Personal Author(s) : Oelbermann,Ernest J. ; Smitley,Charles R.

Report Date : 06 MAR 1972

Pagination or Media Count : 53

Abstract : The report summarizes research and development connected with the use of a scanning VLF receiver at Thule, Greenland, to study polar cap disturbances during PCA's. The report describes the equipment, the quiet-day solar controlled patterns of a number of polar path VLF circuits, and VLF amplitude perturbations produced by solar proton events which occurred on September 1, October 3, and December 2, 1971. It is concluded that the VLFamplitude data are very sensitive and can be used to provide detection and tracking information on the movement of PCA centers across the polar cap. It is recommended that the scanned bandwidth be reduced and the sweep rate speeded up to shorten dead time and improve the time resolution of the system. (Author)

Descriptors :   (*IONOSPHERIC DISTURBANCES, ARCTIC REGIONS), (*IONOSPHERIC PROPAGATION, VERY LOW FREQUENCY), MONITORS, SOLAR WIND, GREENLAND, RADIO RECEIVERS, PERIODIC VARIATIONS

Subject Categories : Atmospheric Physics
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE