A statistical study of the spatial distribution of Co-operative UK Twin Located Auroral Sounding System (CUTLASS) backscatter power during EISCAT heater beam-sweeping experiments
High-power electromagnetic waves can excite a variety of plasma instabilities in Earth's ionosphere. These lead to the growth of plasma waves and plasma density irregularities within the heated volume, including patches of small-scale field-aligned electron density irregularities. This paper re...
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ftleicesterunfig:oai:figshare.com:article/10096721 2023-05-15T16:04:33+02:00 A statistical study of the spatial distribution of Co-operative UK Twin Located Auroral Sounding System (CUTLASS) backscatter power during EISCAT heater beam-sweeping experiments H. Shergill T. R. Robinson R. S. Dhillon M. Lester S. E. Milan Tim K. Yeoman 2010-05-14T00:00:00Z https://figshare.com/articles/journal_contribution/A_statistical_study_of_the_spatial_distribution_of_Co-operative_UK_Twin_Located_Auroral_Sounding_System_CUTLASS_backscatter_power_during_EISCAT_heater_beam-sweeping_experiments/10096721 unknown 2381/8224 https://figshare.com/articles/journal_contribution/A_statistical_study_of_the_spatial_distribution_of_Co-operative_UK_Twin_Located_Auroral_Sounding_System_CUTLASS_backscatter_power_during_EISCAT_heater_beam-sweeping_experiments/10096721 All Rights Reserved Uncategorized IR content Text Journal contribution 2010 ftleicesterunfig 2021-11-11T20:10:45Z High-power electromagnetic waves can excite a variety of plasma instabilities in Earth's ionosphere. These lead to the growth of plasma waves and plasma density irregularities within the heated volume, including patches of small-scale field-aligned electron density irregularities. This paper reports a statistical study of intensity distributions in patches of these irregularities excited by the European Incoherent Scatter (EISCAT) heater during beam-sweeping experiments. The irregularities were detected by the Co-operative UK Twin Located Auroral Sounding System (CUTLASS) coherent scatter radar located in Finland. During these experiments the heater beam direction is steadily changed from northward to southward pointing. Comparisons are made between statistical parameters of CUTLASS backscatter power distributions and modeled heater beam power distributions provided by the EZNEC version 4 software. In general, good agreement between the statistical parameters and the modeled beam is observed, clearly indicating the direct causal connection between the heater beam and the irregularities, despite the sometimes seemingly unpredictable nature of unaveraged results. The results also give compelling evidence in support of the upper hybrid theory of irregularity excitation. Other Non-Article Part of Journal/Newspaper EISCAT University of Leicester: Figshare |
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Uncategorized IR content H. Shergill T. R. Robinson R. S. Dhillon M. Lester S. E. Milan Tim K. Yeoman A statistical study of the spatial distribution of Co-operative UK Twin Located Auroral Sounding System (CUTLASS) backscatter power during EISCAT heater beam-sweeping experiments |
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Uncategorized IR content |
description |
High-power electromagnetic waves can excite a variety of plasma instabilities in Earth's ionosphere. These lead to the growth of plasma waves and plasma density irregularities within the heated volume, including patches of small-scale field-aligned electron density irregularities. This paper reports a statistical study of intensity distributions in patches of these irregularities excited by the European Incoherent Scatter (EISCAT) heater during beam-sweeping experiments. The irregularities were detected by the Co-operative UK Twin Located Auroral Sounding System (CUTLASS) coherent scatter radar located in Finland. During these experiments the heater beam direction is steadily changed from northward to southward pointing. Comparisons are made between statistical parameters of CUTLASS backscatter power distributions and modeled heater beam power distributions provided by the EZNEC version 4 software. In general, good agreement between the statistical parameters and the modeled beam is observed, clearly indicating the direct causal connection between the heater beam and the irregularities, despite the sometimes seemingly unpredictable nature of unaveraged results. The results also give compelling evidence in support of the upper hybrid theory of irregularity excitation. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
H. Shergill T. R. Robinson R. S. Dhillon M. Lester S. E. Milan Tim K. Yeoman |
author_facet |
H. Shergill T. R. Robinson R. S. Dhillon M. Lester S. E. Milan Tim K. Yeoman |
author_sort |
H. Shergill |
title |
A statistical study of the spatial distribution of Co-operative UK Twin Located Auroral Sounding System (CUTLASS) backscatter power during EISCAT heater beam-sweeping experiments |
title_short |
A statistical study of the spatial distribution of Co-operative UK Twin Located Auroral Sounding System (CUTLASS) backscatter power during EISCAT heater beam-sweeping experiments |
title_full |
A statistical study of the spatial distribution of Co-operative UK Twin Located Auroral Sounding System (CUTLASS) backscatter power during EISCAT heater beam-sweeping experiments |
title_fullStr |
A statistical study of the spatial distribution of Co-operative UK Twin Located Auroral Sounding System (CUTLASS) backscatter power during EISCAT heater beam-sweeping experiments |
title_full_unstemmed |
A statistical study of the spatial distribution of Co-operative UK Twin Located Auroral Sounding System (CUTLASS) backscatter power during EISCAT heater beam-sweeping experiments |
title_sort |
statistical study of the spatial distribution of co-operative uk twin located auroral sounding system (cutlass) backscatter power during eiscat heater beam-sweeping experiments |
publishDate |
2010 |
url |
https://figshare.com/articles/journal_contribution/A_statistical_study_of_the_spatial_distribution_of_Co-operative_UK_Twin_Located_Auroral_Sounding_System_CUTLASS_backscatter_power_during_EISCAT_heater_beam-sweeping_experiments/10096721 |
genre |
EISCAT |
genre_facet |
EISCAT |
op_relation |
2381/8224 https://figshare.com/articles/journal_contribution/A_statistical_study_of_the_spatial_distribution_of_Co-operative_UK_Twin_Located_Auroral_Sounding_System_CUTLASS_backscatter_power_during_EISCAT_heater_beam-sweeping_experiments/10096721 |
op_rights |
All Rights Reserved |
_version_ |
1766400138464460800 |