Accession Number : AD0707822
Title : THE MAGNETIC CONTROL OF GLOBAL PATTERNS OF F-LAYER VERTICAL DRIFT CAUSED BY NEUTRAL WINDS.
Descriptive Note : Environmental research papers,
Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS
Personal Author(s) : Pike,C. P.
Report Date : MAY 1970
Pagination or Media Count : 14
Abstract : Basic considerations to a study of F-layer modification by vertical drift from any postulated neutral atmospheric wind system are the effects of local magnetic inclination and declination upon the resulting F-layer vertical drift velocity. The effect of local magnetic inclination enters in the term sin I cos I contained in the expression for the vertical drift velocity Vz = V sin I cos I, where V is the wind velocity in the horizontal plane. A global map with contours of sin I cos I is presented in the report which enables one to compare the effect of inclination in different regions. This map shows where inclination would either tend to null or to maximize F-layer vertical drift respectively. The global maps clearly show that vertical drift is often strongly nonsymmetric at magnetic conjugate locations. Finally, an understanding of F-layer structure and dynamics is particularly important in many radio propagation problems. (Author)
Descriptors : (*RADIO WAVES, IONOSPHERIC PROPAGATION), (*IONOSPHERE, ATMOSPHERIC MOTION), ELECTRON DENSITY, IONIZATION, GEOMAGNETISM
Subject Categories : Atmospheric Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE