The Effects of Magnetic Storm Phases on F-Layer Irregularities from Auroral to Equatorial Latitudes

Several periods of interest in the low sunspot years of 1985 and 1986 have been identified when data were available from Kiruna, Sweden and from Goose Bay, Labrador as well as from equatorial sites. A contouring program was developed to handle the Transit data and in fact have received data from sev...

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Bibliographic Details
Main Authors: Aarons, Jules, Mendillo, Michael
Other Authors: BOSTON UNIV MA CENTER FOR SPACE PHYSICS
Format: Text
Language:English
Published: 1991
Subjects:
Atmospheric Physics
*IONOSPHERIC DISTURBANCES
IONOSPHERIC PROPAGATION
POLAR REGIONS
MAGNETIC FIELDS
FLUX(RATE)
SITES
CANADA
PHASE
ELECTROMAGNETIC INDUCTION
PATTERNS
AURORAE
SOLAR RADIATION
F REGION
HIGH LATITUDES
E REGION
GREEN(COLOR)
SWEDEN
MAGNETIC STORMS
SUNSPOTS
LATITUDE
CONTOURS
DATA BASES
EQUATORIAL REGIONS
Kiruna
Canada
Handle The
Online Access:http://www.dtic.mil/docs/citations/ADA245495
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA245495
Description
Summary:Several periods of interest in the low sunspot years of 1985 and 1986 have been identified when data were available from Kiruna, Sweden and from Goose Bay, Labrador as well as from equatorial sites. A contouring program was developed to handle the Transit data and in fact have received data from several sample periods of very low magnetic activity over a period of several days. Just begun is this study of determining the pattern of F-layer irregularities during years of low solar flux. The evaluation of data sets has included new analysis (for Manila, for example) as well as evaluating older data, much of it at this date unused for scientific purposes. While F-region irregularities are frequently spoken of occurring in the auroral region, the behavior of the irregularities as a function of sunspot number is significantly different from the behavior of the auroral region. Auroral data, primarily of the E layer green line, show no significant changes as a function of sunspot number in the latitude of the occurrence of this phenomenon; F-region irregularities show a great movement towards the polar region with a low sunspot number. In order to predict the occurrence and level of the effects on trans-ionospheric propagation, the relationship to sunspot number must be ascertained. We feel the comparison of high latitude data from Sweden and Canada will allow us to state that a polar movement of the region during low sunspot years is a global phenomenon.

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