Analysis of Coordinated Observations in the Region of the Day Side Polar Cleft
The objective of the research effort has been to develop electrodynamic models of the connectivity of the dayside high latitude ionosphere with the magnetosphere and solar wind. This is accomplished through the coordinated analysis of a variety of electrodynamic observations utilizing correlative sa...
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ftdtic:ADA200627 2023-05-15T16:28:06+02:00 Analysis of Coordinated Observations in the Region of the Day Side Polar Cleft Carpenter, D. L. Clauer, C. R. STANFORD UNIV CA SPACE TELECOMMUNICATIONS AND RADIOSCIENCE LAB (STAR) 1988-04 text/html http://www.dtic.mil/docs/citations/ADA200627 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA200627 en eng http://www.dtic.mil/docs/citations/ADA200627 Approved for public release; distribution is unlimited. DTIC AND NTIS Atmospheric Physics *COUPLING(INTERACTION) *IONOSPHERIC DISTURBANCES *PLASMAS(PHYSICS) *CONVECTION(ATMOSPHERIC) *MAGNETOSPHERE ARRAYS ALIGNMENT TIME PULSES TRANSFER ELECTRIC CURRENT HIGH LATITUDES MAGNETIC SIGNATURES ELECTRODYNAMICS GREENLAND MAGNETOMETERS FLUX(RATE) MODELS MAGNETIC FIELDS IONOSPHERE SOLAR WIND GROUND LEVEL PE61102F WUAFGL2311G2HG Text 1988 ftdtic 2016-02-23T07:43:01Z The objective of the research effort has been to develop electrodynamic models of the connectivity of the dayside high latitude ionosphere with the magnetosphere and solar wind. This is accomplished through the coordinated analysis of a variety of electrodynamic observations utilizing correlative satellite and ground data acquired in the vicinity of the polar cleft. Very strong evidence is found for a direct electrical connection between utilizing large scale field-aligned currents in the cleft region reproduces many of the time varying features in the observed high latitude ionospheric electrical fields and plasma convection. The small-scale current structures and expected ionospheric signatures are examined from localized coupling which would be expected from flux transfer events. Analysis of high latitude magnetic data from an array of magnetometers around Sondre Stromfjord Greenland show impulsive events. These magnetic signatures are shown to result from pairs of small scale field-aligned current filaments moving tailward at about 4 Km/sec over the array of stations. These events, however, are inconsistent with present models of FTE current systems. Keywords: Ionospheric currents; Ionospheric plasma convection; Solar wind; Magnetosphere; Ionosphere coupling; Polar cleft. Text Greenland Sondre Stromfjord Defense Technical Information Center: DTIC Technical Reports database Greenland |
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Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Atmospheric Physics *COUPLING(INTERACTION) *IONOSPHERIC DISTURBANCES *PLASMAS(PHYSICS) *CONVECTION(ATMOSPHERIC) *MAGNETOSPHERE ARRAYS ALIGNMENT TIME PULSES TRANSFER ELECTRIC CURRENT HIGH LATITUDES MAGNETIC SIGNATURES ELECTRODYNAMICS GREENLAND MAGNETOMETERS FLUX(RATE) MODELS MAGNETIC FIELDS IONOSPHERE SOLAR WIND GROUND LEVEL PE61102F WUAFGL2311G2HG |
spellingShingle |
Atmospheric Physics *COUPLING(INTERACTION) *IONOSPHERIC DISTURBANCES *PLASMAS(PHYSICS) *CONVECTION(ATMOSPHERIC) *MAGNETOSPHERE ARRAYS ALIGNMENT TIME PULSES TRANSFER ELECTRIC CURRENT HIGH LATITUDES MAGNETIC SIGNATURES ELECTRODYNAMICS GREENLAND MAGNETOMETERS FLUX(RATE) MODELS MAGNETIC FIELDS IONOSPHERE SOLAR WIND GROUND LEVEL PE61102F WUAFGL2311G2HG Carpenter, D. L. Clauer, C. R. Analysis of Coordinated Observations in the Region of the Day Side Polar Cleft |
topic_facet |
Atmospheric Physics *COUPLING(INTERACTION) *IONOSPHERIC DISTURBANCES *PLASMAS(PHYSICS) *CONVECTION(ATMOSPHERIC) *MAGNETOSPHERE ARRAYS ALIGNMENT TIME PULSES TRANSFER ELECTRIC CURRENT HIGH LATITUDES MAGNETIC SIGNATURES ELECTRODYNAMICS GREENLAND MAGNETOMETERS FLUX(RATE) MODELS MAGNETIC FIELDS IONOSPHERE SOLAR WIND GROUND LEVEL PE61102F WUAFGL2311G2HG |
description |
The objective of the research effort has been to develop electrodynamic models of the connectivity of the dayside high latitude ionosphere with the magnetosphere and solar wind. This is accomplished through the coordinated analysis of a variety of electrodynamic observations utilizing correlative satellite and ground data acquired in the vicinity of the polar cleft. Very strong evidence is found for a direct electrical connection between utilizing large scale field-aligned currents in the cleft region reproduces many of the time varying features in the observed high latitude ionospheric electrical fields and plasma convection. The small-scale current structures and expected ionospheric signatures are examined from localized coupling which would be expected from flux transfer events. Analysis of high latitude magnetic data from an array of magnetometers around Sondre Stromfjord Greenland show impulsive events. These magnetic signatures are shown to result from pairs of small scale field-aligned current filaments moving tailward at about 4 Km/sec over the array of stations. These events, however, are inconsistent with present models of FTE current systems. Keywords: Ionospheric currents; Ionospheric plasma convection; Solar wind; Magnetosphere; Ionosphere coupling; Polar cleft. |
author2 |
STANFORD UNIV CA SPACE TELECOMMUNICATIONS AND RADIOSCIENCE LAB (STAR) |
format |
Text |
author |
Carpenter, D. L. Clauer, C. R. |
author_facet |
Carpenter, D. L. Clauer, C. R. |
author_sort |
Carpenter, D. L. |
title |
Analysis of Coordinated Observations in the Region of the Day Side Polar Cleft |
title_short |
Analysis of Coordinated Observations in the Region of the Day Side Polar Cleft |
title_full |
Analysis of Coordinated Observations in the Region of the Day Side Polar Cleft |
title_fullStr |
Analysis of Coordinated Observations in the Region of the Day Side Polar Cleft |
title_full_unstemmed |
Analysis of Coordinated Observations in the Region of the Day Side Polar Cleft |
title_sort |
analysis of coordinated observations in the region of the day side polar cleft |
publishDate |
1988 |
url |
http://www.dtic.mil/docs/citations/ADA200627 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA200627 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Sondre Stromfjord |
genre_facet |
Greenland Sondre Stromfjord |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA200627 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766017719465934848 |