Statistical characteristics of Doppler spectral width as observed by the conjugate SuperDARN radars
We performed a statistical analysis of the occurrence distribution of Doppler spectral width around the day-side high-latitude ionosphere using data from the conjugate radar pair composed of the CUTLASS Iceland-East radar in the Northern Hemisphere and the SENSU Syowa-East radar in the Southern Hemi...
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ftleicesterunfig:oai:figshare.com:article/10178750 2023-05-15T16:48:44+02:00 Statistical characteristics of Doppler spectral width as observed by the conjugate SuperDARN radars K. Hosokawa E. E. Woodfield M. Lester S. E. Milan N. Sato A. S. Yukimatu T. Iyemori 2002-08-31T00:00:00Z https://figshare.com/articles/journal_contribution/Statistical_characteristics_of_Doppler_spectral_width_as_observed_by_the_conjugate_SuperDARN_radars/10178750 unknown 2381/39284 https://figshare.com/articles/journal_contribution/Statistical_characteristics_of_Doppler_spectral_width_as_observed_by_the_conjugate_SuperDARN_radars/10178750 All Rights Reserved Uncategorized Science & Technology Physical Sciences Astronomy & Astrophysics Geosciences Multidisciplinary Meteorology & Atmospheric Sciences Geology ionosphere ionosphere-magnetosphere interactions plasma convection magnetospheric physics magnetopause cusp and boundary layers BOUNDARY-LAYER CAMPAIGN COHERENT HF RADAR AURORAL ACTIVITY F-REGION IDENTIFICATION IRREGULARITIES BACKSCATTER FIELD DMSP Text Journal contribution 2002 ftleicesterunfig 2021-11-11T19:36:44Z We performed a statistical analysis of the occurrence distribution of Doppler spectral width around the day-side high-latitude ionosphere using data from the conjugate radar pair composed of the CUTLASS Iceland-East radar in the Northern Hemisphere and the SENSU Syowa-East radar in the Southern Hemisphere. Three types of spectral width distribution were identified: (1) an exponential-like distribution in the lower magnetic latitudes (below 72°), (2) a Gaussian-like distribution around a few degrees magnetic latitude, centered on 78°, and (3) another type of distribution in the higher magnetic latitudes (above 80°). The first two are considered to represent the geophysical regimes such as the LLBL and the cusp, respectively, because they are similar to the spectral width distributions within the LLBL and the cusp, as classified by Baker et al. (1995). The distribution found above 80° magnetic latitude has been clarified for the first time in this study. This distribution has similarities to the exponential-like distribution in the lower latitude part, although clear differences also exist in their characteristics. These three spectral width distributions are commonly identified in conjugate hemispheres. The latitudinal transition from one distribution to another exhibits basically the same trend between two hemispheres. There is, however, an interhemispheric difference in the form of the distribution around the cusp latitudes, such that spectral width values obtained from Syowa-East are larger than those from Iceland-East. On the basis of the spectral width characteristics, the average locations of the cusp and the open/closed field line boundary are estimated statistically. Other Non-Article Part of Journal/Newspaper Iceland University of Leicester: Figshare |
institution |
Open Polar |
collection |
University of Leicester: Figshare |
op_collection_id |
ftleicesterunfig |
language |
unknown |
topic |
Uncategorized Science & Technology Physical Sciences Astronomy & Astrophysics Geosciences Multidisciplinary Meteorology & Atmospheric Sciences Geology ionosphere ionosphere-magnetosphere interactions plasma convection magnetospheric physics magnetopause cusp and boundary layers BOUNDARY-LAYER CAMPAIGN COHERENT HF RADAR AURORAL ACTIVITY F-REGION IDENTIFICATION IRREGULARITIES BACKSCATTER FIELD DMSP |
spellingShingle |
Uncategorized Science & Technology Physical Sciences Astronomy & Astrophysics Geosciences Multidisciplinary Meteorology & Atmospheric Sciences Geology ionosphere ionosphere-magnetosphere interactions plasma convection magnetospheric physics magnetopause cusp and boundary layers BOUNDARY-LAYER CAMPAIGN COHERENT HF RADAR AURORAL ACTIVITY F-REGION IDENTIFICATION IRREGULARITIES BACKSCATTER FIELD DMSP K. Hosokawa E. E. Woodfield M. Lester S. E. Milan N. Sato A. S. Yukimatu T. Iyemori Statistical characteristics of Doppler spectral width as observed by the conjugate SuperDARN radars |
topic_facet |
Uncategorized Science & Technology Physical Sciences Astronomy & Astrophysics Geosciences Multidisciplinary Meteorology & Atmospheric Sciences Geology ionosphere ionosphere-magnetosphere interactions plasma convection magnetospheric physics magnetopause cusp and boundary layers BOUNDARY-LAYER CAMPAIGN COHERENT HF RADAR AURORAL ACTIVITY F-REGION IDENTIFICATION IRREGULARITIES BACKSCATTER FIELD DMSP |
description |
We performed a statistical analysis of the occurrence distribution of Doppler spectral width around the day-side high-latitude ionosphere using data from the conjugate radar pair composed of the CUTLASS Iceland-East radar in the Northern Hemisphere and the SENSU Syowa-East radar in the Southern Hemisphere. Three types of spectral width distribution were identified: (1) an exponential-like distribution in the lower magnetic latitudes (below 72°), (2) a Gaussian-like distribution around a few degrees magnetic latitude, centered on 78°, and (3) another type of distribution in the higher magnetic latitudes (above 80°). The first two are considered to represent the geophysical regimes such as the LLBL and the cusp, respectively, because they are similar to the spectral width distributions within the LLBL and the cusp, as classified by Baker et al. (1995). The distribution found above 80° magnetic latitude has been clarified for the first time in this study. This distribution has similarities to the exponential-like distribution in the lower latitude part, although clear differences also exist in their characteristics. These three spectral width distributions are commonly identified in conjugate hemispheres. The latitudinal transition from one distribution to another exhibits basically the same trend between two hemispheres. There is, however, an interhemispheric difference in the form of the distribution around the cusp latitudes, such that spectral width values obtained from Syowa-East are larger than those from Iceland-East. On the basis of the spectral width characteristics, the average locations of the cusp and the open/closed field line boundary are estimated statistically. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
K. Hosokawa E. E. Woodfield M. Lester S. E. Milan N. Sato A. S. Yukimatu T. Iyemori |
author_facet |
K. Hosokawa E. E. Woodfield M. Lester S. E. Milan N. Sato A. S. Yukimatu T. Iyemori |
author_sort |
K. Hosokawa |
title |
Statistical characteristics of Doppler spectral width as observed by the conjugate SuperDARN radars |
title_short |
Statistical characteristics of Doppler spectral width as observed by the conjugate SuperDARN radars |
title_full |
Statistical characteristics of Doppler spectral width as observed by the conjugate SuperDARN radars |
title_fullStr |
Statistical characteristics of Doppler spectral width as observed by the conjugate SuperDARN radars |
title_full_unstemmed |
Statistical characteristics of Doppler spectral width as observed by the conjugate SuperDARN radars |
title_sort |
statistical characteristics of doppler spectral width as observed by the conjugate superdarn radars |
publishDate |
2002 |
url |
https://figshare.com/articles/journal_contribution/Statistical_characteristics_of_Doppler_spectral_width_as_observed_by_the_conjugate_SuperDARN_radars/10178750 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
2381/39284 https://figshare.com/articles/journal_contribution/Statistical_characteristics_of_Doppler_spectral_width_as_observed_by_the_conjugate_SuperDARN_radars/10178750 |
op_rights |
All Rights Reserved |
_version_ |
1766038812722462720 |