A comparison of satellite scintillation measurements with HF radar backscatter characteristics
We examine the correspondence between high latitude ionospheric scintillation measurements made at 250MHz with the occurrence of 10MHz HF coherent radar backscatter, on 13 and 14 December 2002. We demonstrate that when the ionospheric intersection point of the scintillation measurements is co-lo...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Copernicus Publications
2005-12-01
|
Series: | Annales Geophysicae |
Online Access: | https://www.ann-geophys.net/23/3451/2005/angeo-23-3451-2005.pdf |
id |
doaj-258e42c5bba043eaa27d3a75dedd3165 |
---|---|
record_format |
Article |
spelling |
doaj-258e42c5bba043eaa27d3a75dedd31652020-11-24T22:54:20ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762005-12-01233451345510.5194/angeo-23-3451-2005A comparison of satellite scintillation measurements with HF radar backscatter characteristicsS. E. Milan0S. Basu1T. K. Yeoman2R. E. Sheehan3Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UKSpace Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Masachusetts 01731, USADepartment of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UKInstitute for Scientific Research, Boston College, Newton Center, Massachusetts 02467, USAWe examine the correspondence between high latitude ionospheric scintillation measurements made at 250MHz with the occurrence of 10MHz HF coherent radar backscatter, on 13 and 14 December 2002. We demonstrate that when the ionospheric intersection point of the scintillation measurements is co-located with significant HF radar backscatter, the observed scintillation, quantified by the S4 index, is elevated. Conversely, when the radar indicates that backscatter is observed away from the intersection point due to movements of the auroral zone, the observed scintillation is low. This suggests that scintillation is highly location-dependent, being enhanced in the auroral zone and being lower at sub-auroral latitudes. The coexistence of scintillation and HF radar backscatter, produced by ionospheric density perturbations with scale sizes of 100s of metres and ~15 m, respectively, suggests that a broad spectrum of density fluctuations is found in the auroral zone.https://www.ann-geophys.net/23/3451/2005/angeo-23-3451-2005.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
S. E. Milan S. Basu T. K. Yeoman R. E. Sheehan |
spellingShingle |
S. E. Milan S. Basu T. K. Yeoman R. E. Sheehan A comparison of satellite scintillation measurements with HF radar backscatter characteristics Annales Geophysicae |
author_facet |
S. E. Milan S. Basu T. K. Yeoman R. E. Sheehan |
author_sort |
S. E. Milan |
title |
A comparison of satellite scintillation measurements with HF radar backscatter characteristics |
title_short |
A comparison of satellite scintillation measurements with HF radar backscatter characteristics |
title_full |
A comparison of satellite scintillation measurements with HF radar backscatter characteristics |
title_fullStr |
A comparison of satellite scintillation measurements with HF radar backscatter characteristics |
title_full_unstemmed |
A comparison of satellite scintillation measurements with HF radar backscatter characteristics |
title_sort |
comparison of satellite scintillation measurements with hf radar backscatter characteristics |
publisher |
Copernicus Publications |
series |
Annales Geophysicae |
issn |
0992-7689 1432-0576 |
publishDate |
2005-12-01 |
description |
We examine the correspondence between high latitude
ionospheric scintillation measurements made at 250MHz with the occurrence
of 10MHz HF coherent radar backscatter, on 13 and 14 December 2002. We
demonstrate that when the ionospheric intersection point of the
scintillation measurements is co-located with significant HF radar
backscatter, the observed scintillation, quantified by the S4 index, is
elevated. Conversely, when the radar indicates that backscatter is observed
away from the intersection point due to movements of the auroral zone, the
observed scintillation is low. This suggests that scintillation is highly
location-dependent, being enhanced in the auroral zone and being lower at
sub-auroral latitudes. The coexistence of scintillation and HF radar
backscatter, produced by ionospheric density perturbations with scale sizes
of 100s of metres and ~15 m, respectively, suggests that a broad spectrum
of density fluctuations is found in the auroral zone. |
url |
https://www.ann-geophys.net/23/3451/2005/angeo-23-3451-2005.pdf |
work_keys_str_mv |
AT semilan acomparisonofsatellitescintillationmeasurementswithhfradarbackscattercharacteristics AT sbasu acomparisonofsatellitescintillationmeasurementswithhfradarbackscattercharacteristics AT tkyeoman acomparisonofsatellitescintillationmeasurementswithhfradarbackscattercharacteristics AT resheehan acomparisonofsatellitescintillationmeasurementswithhfradarbackscattercharacteristics AT semilan comparisonofsatellitescintillationmeasurementswithhfradarbackscattercharacteristics AT sbasu comparisonofsatellitescintillationmeasurementswithhfradarbackscattercharacteristics AT tkyeoman comparisonofsatellitescintillationmeasurementswithhfradarbackscattercharacteristics AT resheehan comparisonofsatellitescintillationmeasurementswithhfradarbackscattercharacteristics |
_version_ |
1725660527785410560 |