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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ftdtic:ADA245495 2023-05-15T17:04:18+02:00 The Effects of Magnetic Storm Phases on F-Layer Irregularities from Auroral to Equatorial Latitudes Aarons, Jules Mendillo, Michael BOSTON UNIV MA CENTER FOR SPACE PHYSICS 1991-12-31 text/html http://www.dtic.mil/docs/citations/ADA245495 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA245495 en eng http://www.dtic.mil/docs/citations/ADA245495 Approved for public release; distribution is unlimited. DTIC AND NTIS 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 Text 1991 ftdtic 2016-02-22T22:05:24Z 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. Text Kiruna Defense Technical Information Center: DTIC Technical Reports database Kiruna Canada Handle The ENVELOPE(161.983,161.983,-78.000,-78.000) |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
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 |
spellingShingle |
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 Aarons, Jules Mendillo, Michael The Effects of Magnetic Storm Phases on F-Layer Irregularities from Auroral to Equatorial Latitudes |
topic_facet |
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 |
description |
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. |
author2 |
BOSTON UNIV MA CENTER FOR SPACE PHYSICS |
format |
Text |
author |
Aarons, Jules Mendillo, Michael |
author_facet |
Aarons, Jules Mendillo, Michael |
author_sort |
Aarons, Jules |
title |
The Effects of Magnetic Storm Phases on F-Layer Irregularities from Auroral to Equatorial Latitudes |
title_short |
The Effects of Magnetic Storm Phases on F-Layer Irregularities from Auroral to Equatorial Latitudes |
title_full |
The Effects of Magnetic Storm Phases on F-Layer Irregularities from Auroral to Equatorial Latitudes |
title_fullStr |
The Effects of Magnetic Storm Phases on F-Layer Irregularities from Auroral to Equatorial Latitudes |
title_full_unstemmed |
The Effects of Magnetic Storm Phases on F-Layer Irregularities from Auroral to Equatorial Latitudes |
title_sort |
effects of magnetic storm phases on f-layer irregularities from auroral to equatorial latitudes |
publishDate |
1991 |
url |
http://www.dtic.mil/docs/citations/ADA245495 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA245495 |
long_lat |
ENVELOPE(161.983,161.983,-78.000,-78.000) |
geographic |
Kiruna Canada Handle The |
geographic_facet |
Kiruna Canada Handle The |
genre |
Kiruna |
genre_facet |
Kiruna |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA245495 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766058374362824704 |