Magnetospheric Control of Density and Composition in the Polar Ionosphere
This research has used collaborative observations by UHF incoherent scatter radar (ISR), the SuperDARN HF radar network, and wide-angle monochromatic optical imagers, supported by first-principles numerical modeling, to investigate the structure and composition of Earth's polar ionosphere. Key...
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ftdtic:ADA621546 2023-05-15T18:06:51+02:00 Magnetospheric Control of Density and Composition in the Polar Ionosphere Semeter, Joshua BOSTON UNIV MA 2015-06-24 text/html http://www.dtic.mil/docs/citations/ADA621546 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA621546 en eng http://www.dtic.mil/docs/citations/ADA621546 Approved for public release; distribution is unlimited. DTIC Atmospheric Physics Active & Passive Radar Detection & Equipment Plasma Physics and Magnetohydrodynamics Radiofrequency Wave Propagation *DENSITY *GEOPHYSICS *IONOSPHERE *MAGNETOSPHERE *POLAR CAP AURORAE COUPLING(INTERACTION) DRAG ELECTROMAGNETIC INTERFERENCE EXPERIMENTAL DESIGN F REGION HIGH FREQUENCY INCOHERENT SCATTERING IONOSPHERIC MODELS IONOSPHERIC SCINTILLATION MAGNETIC FIELDS OPTICAL DETECTION PARTICLE FLUX PHASED ARRAYS PLASMAS(PHYSICS) QUANTITATIVE ANALYSIS SEARCH RADAR SENSOR FUSION THERMAL DIFFUSION TIME DEPENDENCE TURBULENCE MAGNETOSPHERE-IONOSPHERE COUPLING GEOSPACE POLAR IONOSPHERE AURORA SATELLITE DRAG GNSS ELECTRODYNAMIC COUPLING DENSITY GRADIENTS ISR(INCOHERENT SCATTER RADAR) Text 2015 ftdtic 2016-02-24T18:44:09Z This research has used collaborative observations by UHF incoherent scatter radar (ISR), the SuperDARN HF radar network, and wide-angle monochromatic optical imagers, supported by first-principles numerical modeling, to investigate the structure and composition of Earth's polar ionosphere. Key observational evidence has been provided by the electronically steerable Incoherent Scatter Radar at Resolute Bay, Canada. Findings include technical contributions related to the application of phased array ISR in the deep polar cap, as well as scientific contributions arising from the application of these techniques: 1) Development of a sensor fusion framework for combining simultaneous observations of auroral phenomena observed by radar and optical means [Semeter and Zettergren, 2014], 2) Development of a deconvolution approach for analyzing volumetric ISR measurements in a temporally and spatially varying ionosphere [Swoboda et al., 2015], 3) Discovery of direct evidence for internal structuring of convecting plasma patches [Dahlgren et al., 2013], 4) Quantitative description of electrodynamic coupling within polar auroral arcs developing along the nightside polar cap boundary [Perry et al., 2015], 5) Steepening of ionospheric density gradients via magnetosphere-ionosphere coupling at the poleward auroral boundary, and 6) Measurements of anomalous ion heating by Langmuir turbulence caused be soft particle fluxes in the aurora -- a possible hidden energy source for F-region energy balance at high latitudes [Akbari et al., 2014, 2015]. The original document contains color images. Text Resolute Bay Defense Technical Information Center: DTIC Technical Reports database Canada Langmuir ENVELOPE(-67.150,-67.150,-66.967,-66.967) Resolute Bay ENVELOPE(-94.842,-94.842,74.677,74.677) |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
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ftdtic |
language |
English |
topic |
Atmospheric Physics Active & Passive Radar Detection & Equipment Plasma Physics and Magnetohydrodynamics Radiofrequency Wave Propagation *DENSITY *GEOPHYSICS *IONOSPHERE *MAGNETOSPHERE *POLAR CAP AURORAE COUPLING(INTERACTION) DRAG ELECTROMAGNETIC INTERFERENCE EXPERIMENTAL DESIGN F REGION HIGH FREQUENCY INCOHERENT SCATTERING IONOSPHERIC MODELS IONOSPHERIC SCINTILLATION MAGNETIC FIELDS OPTICAL DETECTION PARTICLE FLUX PHASED ARRAYS PLASMAS(PHYSICS) QUANTITATIVE ANALYSIS SEARCH RADAR SENSOR FUSION THERMAL DIFFUSION TIME DEPENDENCE TURBULENCE MAGNETOSPHERE-IONOSPHERE COUPLING GEOSPACE POLAR IONOSPHERE AURORA SATELLITE DRAG GNSS ELECTRODYNAMIC COUPLING DENSITY GRADIENTS ISR(INCOHERENT SCATTER RADAR) |
spellingShingle |
Atmospheric Physics Active & Passive Radar Detection & Equipment Plasma Physics and Magnetohydrodynamics Radiofrequency Wave Propagation *DENSITY *GEOPHYSICS *IONOSPHERE *MAGNETOSPHERE *POLAR CAP AURORAE COUPLING(INTERACTION) DRAG ELECTROMAGNETIC INTERFERENCE EXPERIMENTAL DESIGN F REGION HIGH FREQUENCY INCOHERENT SCATTERING IONOSPHERIC MODELS IONOSPHERIC SCINTILLATION MAGNETIC FIELDS OPTICAL DETECTION PARTICLE FLUX PHASED ARRAYS PLASMAS(PHYSICS) QUANTITATIVE ANALYSIS SEARCH RADAR SENSOR FUSION THERMAL DIFFUSION TIME DEPENDENCE TURBULENCE MAGNETOSPHERE-IONOSPHERE COUPLING GEOSPACE POLAR IONOSPHERE AURORA SATELLITE DRAG GNSS ELECTRODYNAMIC COUPLING DENSITY GRADIENTS ISR(INCOHERENT SCATTER RADAR) Semeter, Joshua Magnetospheric Control of Density and Composition in the Polar Ionosphere |
topic_facet |
Atmospheric Physics Active & Passive Radar Detection & Equipment Plasma Physics and Magnetohydrodynamics Radiofrequency Wave Propagation *DENSITY *GEOPHYSICS *IONOSPHERE *MAGNETOSPHERE *POLAR CAP AURORAE COUPLING(INTERACTION) DRAG ELECTROMAGNETIC INTERFERENCE EXPERIMENTAL DESIGN F REGION HIGH FREQUENCY INCOHERENT SCATTERING IONOSPHERIC MODELS IONOSPHERIC SCINTILLATION MAGNETIC FIELDS OPTICAL DETECTION PARTICLE FLUX PHASED ARRAYS PLASMAS(PHYSICS) QUANTITATIVE ANALYSIS SEARCH RADAR SENSOR FUSION THERMAL DIFFUSION TIME DEPENDENCE TURBULENCE MAGNETOSPHERE-IONOSPHERE COUPLING GEOSPACE POLAR IONOSPHERE AURORA SATELLITE DRAG GNSS ELECTRODYNAMIC COUPLING DENSITY GRADIENTS ISR(INCOHERENT SCATTER RADAR) |
description |
This research has used collaborative observations by UHF incoherent scatter radar (ISR), the SuperDARN HF radar network, and wide-angle monochromatic optical imagers, supported by first-principles numerical modeling, to investigate the structure and composition of Earth's polar ionosphere. Key observational evidence has been provided by the electronically steerable Incoherent Scatter Radar at Resolute Bay, Canada. Findings include technical contributions related to the application of phased array ISR in the deep polar cap, as well as scientific contributions arising from the application of these techniques: 1) Development of a sensor fusion framework for combining simultaneous observations of auroral phenomena observed by radar and optical means [Semeter and Zettergren, 2014], 2) Development of a deconvolution approach for analyzing volumetric ISR measurements in a temporally and spatially varying ionosphere [Swoboda et al., 2015], 3) Discovery of direct evidence for internal structuring of convecting plasma patches [Dahlgren et al., 2013], 4) Quantitative description of electrodynamic coupling within polar auroral arcs developing along the nightside polar cap boundary [Perry et al., 2015], 5) Steepening of ionospheric density gradients via magnetosphere-ionosphere coupling at the poleward auroral boundary, and 6) Measurements of anomalous ion heating by Langmuir turbulence caused be soft particle fluxes in the aurora -- a possible hidden energy source for F-region energy balance at high latitudes [Akbari et al., 2014, 2015]. The original document contains color images. |
author2 |
BOSTON UNIV MA |
format |
Text |
author |
Semeter, Joshua |
author_facet |
Semeter, Joshua |
author_sort |
Semeter, Joshua |
title |
Magnetospheric Control of Density and Composition in the Polar Ionosphere |
title_short |
Magnetospheric Control of Density and Composition in the Polar Ionosphere |
title_full |
Magnetospheric Control of Density and Composition in the Polar Ionosphere |
title_fullStr |
Magnetospheric Control of Density and Composition in the Polar Ionosphere |
title_full_unstemmed |
Magnetospheric Control of Density and Composition in the Polar Ionosphere |
title_sort |
magnetospheric control of density and composition in the polar ionosphere |
publishDate |
2015 |
url |
http://www.dtic.mil/docs/citations/ADA621546 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA621546 |
long_lat |
ENVELOPE(-67.150,-67.150,-66.967,-66.967) ENVELOPE(-94.842,-94.842,74.677,74.677) |
geographic |
Canada Langmuir Resolute Bay |
geographic_facet |
Canada Langmuir Resolute Bay |
genre |
Resolute Bay |
genre_facet |
Resolute Bay |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA621546 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766178560825884672 |