Characteristics of medium-scale travelling ionospheric disturbances observed near the Antarctic Peninsula by HF radar
We present a survey of medium-scale traveling ionospheric disturbances (MSTIDs) observed by a Super Dual Auroral Radar Network HF radar located in the Falkland Islands between May 2010 and April 2011. The radar has a field of view that overlooks the Antarctic Peninsula, a known hot spot of gravity w...
Published in: | Journal of Geophysical Research: Space Physics |
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Language: | English |
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2013
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Online Access: | https://eprints.lancs.ac.uk/id/eprint/67062/ https://eprints.lancs.ac.uk/id/eprint/67062/1/Grocott2013a.pdf |
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ftulancaster:oai:eprints.lancs.ac.uk:67062 2024-05-19T07:28:54+00:00 Characteristics of medium-scale travelling ionospheric disturbances observed near the Antarctic Peninsula by HF radar Grocott, A. Hosokawa, K. Ishida, T. Lester, M. Milan, S. E. Freeman, M. P. Sato, N. Yukimatu, A. S. 2013-09 application/pdf https://eprints.lancs.ac.uk/id/eprint/67062/ https://eprints.lancs.ac.uk/id/eprint/67062/1/Grocott2013a.pdf en eng https://eprints.lancs.ac.uk/id/eprint/67062/1/Grocott2013a.pdf Grocott, A. and Hosokawa, K. and Ishida, T. and Lester, M. and Milan, S. E. and Freeman, M. P. and Sato, N. and Yukimatu, A. S. (2013) Characteristics of medium-scale travelling ionospheric disturbances observed near the Antarctic Peninsula by HF radar. Journal of Geophysical Research, 118 (9). 5830–5841. ISSN 0148-0227 none Journal Article PeerReviewed 2013 ftulancaster 2024-04-23T23:34:45Z We present a survey of medium-scale traveling ionospheric disturbances (MSTIDs) observed by a Super Dual Auroral Radar Network HF radar located in the Falkland Islands between May 2010 and April 2011. The radar has a field of view that overlooks the Antarctic Peninsula, a known hot spot of gravity wave activity. We present observations of radar ground-backscatter data, in which the signatures of MSTIDs are manifested as structured enhancements in echo power. Observed periods were in the range 30–80 min, corresponding to frequencies of 0.2–0.6 mHz. Wavelengths were generally in the range 200–800 km and phase speeds in the range 100–300 m s−1. These values are within the ranges typically associated with medium-scale gravity waves. We find a primary population of northward (equatorward) propagating MSTIDs, which demonstrate an association with enhanced solar wind-magnetosphere coupling and a smaller, westward propagating population, that could be associated with atmospheric gravity waves excited by winds over the Andean and Antarctic Peninsula mountains or by the high winds of the Antarctic Polar Vortex. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Lancaster University: Lancaster Eprints Journal of Geophysical Research: Space Physics 118 9 5830 5841 |
institution |
Open Polar |
collection |
Lancaster University: Lancaster Eprints |
op_collection_id |
ftulancaster |
language |
English |
description |
We present a survey of medium-scale traveling ionospheric disturbances (MSTIDs) observed by a Super Dual Auroral Radar Network HF radar located in the Falkland Islands between May 2010 and April 2011. The radar has a field of view that overlooks the Antarctic Peninsula, a known hot spot of gravity wave activity. We present observations of radar ground-backscatter data, in which the signatures of MSTIDs are manifested as structured enhancements in echo power. Observed periods were in the range 30–80 min, corresponding to frequencies of 0.2–0.6 mHz. Wavelengths were generally in the range 200–800 km and phase speeds in the range 100–300 m s−1. These values are within the ranges typically associated with medium-scale gravity waves. We find a primary population of northward (equatorward) propagating MSTIDs, which demonstrate an association with enhanced solar wind-magnetosphere coupling and a smaller, westward propagating population, that could be associated with atmospheric gravity waves excited by winds over the Andean and Antarctic Peninsula mountains or by the high winds of the Antarctic Polar Vortex. |
format |
Article in Journal/Newspaper |
author |
Grocott, A. Hosokawa, K. Ishida, T. Lester, M. Milan, S. E. Freeman, M. P. Sato, N. Yukimatu, A. S. |
spellingShingle |
Grocott, A. Hosokawa, K. Ishida, T. Lester, M. Milan, S. E. Freeman, M. P. Sato, N. Yukimatu, A. S. Characteristics of medium-scale travelling ionospheric disturbances observed near the Antarctic Peninsula by HF radar |
author_facet |
Grocott, A. Hosokawa, K. Ishida, T. Lester, M. Milan, S. E. Freeman, M. P. Sato, N. Yukimatu, A. S. |
author_sort |
Grocott, A. |
title |
Characteristics of medium-scale travelling ionospheric disturbances observed near the Antarctic Peninsula by HF radar |
title_short |
Characteristics of medium-scale travelling ionospheric disturbances observed near the Antarctic Peninsula by HF radar |
title_full |
Characteristics of medium-scale travelling ionospheric disturbances observed near the Antarctic Peninsula by HF radar |
title_fullStr |
Characteristics of medium-scale travelling ionospheric disturbances observed near the Antarctic Peninsula by HF radar |
title_full_unstemmed |
Characteristics of medium-scale travelling ionospheric disturbances observed near the Antarctic Peninsula by HF radar |
title_sort |
characteristics of medium-scale travelling ionospheric disturbances observed near the antarctic peninsula by hf radar |
publishDate |
2013 |
url |
https://eprints.lancs.ac.uk/id/eprint/67062/ https://eprints.lancs.ac.uk/id/eprint/67062/1/Grocott2013a.pdf |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_relation |
https://eprints.lancs.ac.uk/id/eprint/67062/1/Grocott2013a.pdf Grocott, A. and Hosokawa, K. and Ishida, T. and Lester, M. and Milan, S. E. and Freeman, M. P. and Sato, N. and Yukimatu, A. S. (2013) Characteristics of medium-scale travelling ionospheric disturbances observed near the Antarctic Peninsula by HF radar. Journal of Geophysical Research, 118 (9). 5830–5841. ISSN 0148-0227 |
op_rights |
none |
container_title |
Journal of Geophysical Research: Space Physics |
container_volume |
118 |
container_issue |
9 |
container_start_page |
5830 |
op_container_end_page |
5841 |
_version_ |
1799476461274398720 |