Accession Number : AD0612583

Title :   OBSERVATIONS OF CONTINUOUS SUB-ELF EMISSIONS IN THE FREQUENCY RANGE 0.2 TO 1.0 CYCLES PER SECOND,

Corporate Author : LOCKHEED MISSILES AND SPACE CO PALO ALTO CALIF

Personal Author(s) : Tepley,Lee ; Amundsen,K. D.

Report Date : 27 JUL 1964

Pagination or Media Count : 6

Abstract : In this note is studied a number of newly recognized properties of a type of sub-ELF emission recently observed in the frequency range 0.2-1.0 cps. The emission is characterized by a band (or bands) of energy often observed continuously throughout the entire night. Sonagrams of the emission are presented. The figures show two subintervals of a 96-hour period (Aug. 1-4, 1963) during which consecutive sonagrams were prepared from data recorded on slow-speed magnetic tape at the Lockheed Pacific Ocean field stations. A distinction is made between the type of Pc1 emission reported here and another category of Pc1 emissions called hydromagnetic (hm) emissions. It appears that continuous emissions and hm emissions differ in a number of respects. The properties of the two types of signals are compared.

Descriptors :   (*MAGNETOHYDRODYNAMICS, ATMOSPHERICS), (*IONOSPHERIC PROPAGATION, ELECTROMAGNETIC RADIATION), (*EXTREMELY LOW FREQUENCY, ELECTROMAGNETIC RADIATION), (*ATMOSPHERICS, MAGNETOHYDRODYNAMICS), ELECTRONIC RECORDING SYSTEMS, GEOPHYSICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE