Accession Number : AD0755787
Title : Investigation of the Diurnal Geomagnetic Variation.
Descriptive Note : Technical rept.,
Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J
Personal Author(s) : Bomke,Hans A. ; Harris,Arthur K.
Report Date : DEC 1972
Pagination or Media Count : 88
Abstract : AMPLE, AN EARLY-MORNING ANOMALY AND AN AFTERNOON ANOMALY, NOT PREVIOUSLY EDUCED, ARE DESCRIBED, AND THEIR SEASONAL AND GEOGRAPHIC CHARACTER ARE STUDIED; THEIR EXISTENCE REQUIRES CONSIDERABLE MODIFICATION OF THE CURRENTLY ACCEPTED, HYPOTHESIZED IONOSPHERIC-CURRENT SYSTEM, AS WELL AS OF THE UNDERLYING ATMOSPHERIC-DYNAMO THEORY. The authors introduce the daytime range as a useful characterization of the diurnal variation; its day-to-day variability is shown to be uncorrelated with solar activity, and is consequently presumed to have a terrestrial cause. Daytime range is also used to investigate the correlation of diurnal variation between stations as a function of distance and season. There are many indications that large-scale weather systems affect the ionospheric currents. (Author)
Descriptors : (*GEOMAGNETISM, DIURNAL VARIATIONS), MAGNETIC FIELDS, ANOMALIES, IONOSPHERIC DISTURBANCES, WEATHER
Subject Categories : Atmospheric Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE