Accession Number : AD0766541

Title :   Ionospheric Disturbances Affecting Radio-Wave Propagation.

Descriptive Note : Final rept. May 72-Jun 73,

Corporate Author : LOCKHEED MISSILES AND SPACE CO INC PALO ALTO CALIF PALO ALTO RESEARCH LAB

Personal Author(s) : Cladis,John B. ; Davidson,Gerald T. ; Francis,William E. ; Newkirk,Lester L. ; Walt,Martin

Report Date : AUG 1973

Pagination or Media Count : 88

Abstract : The problem of radar propagation through an ionosphere disturbed by a nuclear detonation is reviewed, and various theories which have been proposed to explain the naturally occurring ionospheric disturbances are discussed. It is indicated that, although the ionospheric irregularities occurring near the equator are now fairly well understood, much more experimental and theoretical work is needed before we can understand the considerably more complicated processes occurring in the high-lattitude regions. An investigation is described to test whether the theory contained in the computer program AURORA includes all important processes required to calculate the correct rate at which energy is deposited in the atmosphere by precipitating auroral electrons. A new process is proposed to explain the high fluxes of energetic O(+) ions observed during the magnetic storm of 17 December 1971. (Modified author abstract)

Descriptors :   (*RADIOFREQUENCY INTERFERENCE, IONOSPHERIC DISTURBANCES), (*RADAR INTERFERENCE, IONOSPHERIC DISTURBANCES), IONOSPHERIC PROPAGATION, AURORAE, ELECTRON DENSITY, OSCILLATION, PLASMAS(PHYSICS), CHARGED PARTICLES, MAGNETIC STORMS, NUCLEAR EXPLOSIONS

Subject Categories : Atmospheric Physics
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE