Characteristics of medium-scale traveling 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 wa...
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American Geophysical Union
2014
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ftleicester:oai:lra.le.ac.uk:2381/28730 2023-05-15T14:03:40+02:00 Characteristics of medium-scale traveling ionospheric disturbances observed near the Antarctic Peninsula by HF radar Grocott, Adrian Hosokawa, K. Ishida, T. Lester, Mark Milan, Steve, E. Freeman, M. P. Sato, N. Yukimatu, A. S. 2014-04-08T09:24:57Z http://onlinelibrary.wiley.com/doi/10.1002/jgra.50515/abstract http://hdl.handle.net/2381/28730 https://doi.org/10.1002/jgra.50515 en eng American Geophysical Union Journal of Geophysical Research: Space Physics, 2013, 118 (9), pp. 5830-5841 2169-9380 http://onlinelibrary.wiley.com/doi/10.1002/jgra.50515/abstract http://hdl.handle.net/2381/28730 doi:10.1002/jgra.50515 2169-9402 © 2013. American Geophysical Union. All Rights Reserved. An edited version of this paper was published by AGU. Science & Technology Physical Sciences Astronomy & Astrophysics GEOSCIENCES MULTIDISCIPLINARY atmosphere ionosphere MSTID AGW ATMOSPHERIC GRAVITY-WAVES ENTROPY SPECTRAL-ANALYSIS HIGH-LATITUDE IONOSPHERE MIDLATITUDE SPREAD F MIDDLE ATMOSPHERE ELECTRIC-FIELDS SUPERDARN ELECTRODYNAMICS DYNAMICS CURRENTS Journal Article Article;Journal 2014 ftleicester https://doi.org/10.1002/jgra.50515 2019-03-22T20:19:17Z 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[superscript –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. NERC grant NE/G019665/1, JSPS Invitation Fellowship (grant L11521) Peer-reviewed Publisher Version Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula University of Leicester: Leicester Research Archive (LRA) Antarctic The Antarctic Antarctic Peninsula Journal of Geophysical Research: Space Physics 118 9 5830 5841 |
institution |
Open Polar |
collection |
University of Leicester: Leicester Research Archive (LRA) |
op_collection_id |
ftleicester |
language |
English |
topic |
Science & Technology Physical Sciences Astronomy & Astrophysics GEOSCIENCES MULTIDISCIPLINARY atmosphere ionosphere MSTID AGW ATMOSPHERIC GRAVITY-WAVES ENTROPY SPECTRAL-ANALYSIS HIGH-LATITUDE IONOSPHERE MIDLATITUDE SPREAD F MIDDLE ATMOSPHERE ELECTRIC-FIELDS SUPERDARN ELECTRODYNAMICS DYNAMICS CURRENTS |
spellingShingle |
Science & Technology Physical Sciences Astronomy & Astrophysics GEOSCIENCES MULTIDISCIPLINARY atmosphere ionosphere MSTID AGW ATMOSPHERIC GRAVITY-WAVES ENTROPY SPECTRAL-ANALYSIS HIGH-LATITUDE IONOSPHERE MIDLATITUDE SPREAD F MIDDLE ATMOSPHERE ELECTRIC-FIELDS SUPERDARN ELECTRODYNAMICS DYNAMICS CURRENTS Grocott, Adrian Hosokawa, K. Ishida, T. Lester, Mark Milan, Steve, E. Freeman, M. P. Sato, N. Yukimatu, A. S. Characteristics of medium-scale traveling ionospheric disturbances observed near the Antarctic Peninsula by HF radar |
topic_facet |
Science & Technology Physical Sciences Astronomy & Astrophysics GEOSCIENCES MULTIDISCIPLINARY atmosphere ionosphere MSTID AGW ATMOSPHERIC GRAVITY-WAVES ENTROPY SPECTRAL-ANALYSIS HIGH-LATITUDE IONOSPHERE MIDLATITUDE SPREAD F MIDDLE ATMOSPHERE ELECTRIC-FIELDS SUPERDARN ELECTRODYNAMICS DYNAMICS CURRENTS |
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[superscript –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. NERC grant NE/G019665/1, JSPS Invitation Fellowship (grant L11521) Peer-reviewed Publisher Version |
format |
Article in Journal/Newspaper |
author |
Grocott, Adrian Hosokawa, K. Ishida, T. Lester, Mark Milan, Steve, E. Freeman, M. P. Sato, N. Yukimatu, A. S. |
author_facet |
Grocott, Adrian Hosokawa, K. Ishida, T. Lester, Mark Milan, Steve, E. Freeman, M. P. Sato, N. Yukimatu, A. S. |
author_sort |
Grocott, Adrian |
title |
Characteristics of medium-scale traveling ionospheric disturbances observed near the Antarctic Peninsula by HF radar |
title_short |
Characteristics of medium-scale traveling ionospheric disturbances observed near the Antarctic Peninsula by HF radar |
title_full |
Characteristics of medium-scale traveling ionospheric disturbances observed near the Antarctic Peninsula by HF radar |
title_fullStr |
Characteristics of medium-scale traveling ionospheric disturbances observed near the Antarctic Peninsula by HF radar |
title_full_unstemmed |
Characteristics of medium-scale traveling ionospheric disturbances observed near the Antarctic Peninsula by HF radar |
title_sort |
characteristics of medium-scale traveling ionospheric disturbances observed near the antarctic peninsula by hf radar |
publisher |
American Geophysical Union |
publishDate |
2014 |
url |
http://onlinelibrary.wiley.com/doi/10.1002/jgra.50515/abstract http://hdl.handle.net/2381/28730 https://doi.org/10.1002/jgra.50515 |
geographic |
Antarctic The Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_relation |
Journal of Geophysical Research: Space Physics, 2013, 118 (9), pp. 5830-5841 2169-9380 http://onlinelibrary.wiley.com/doi/10.1002/jgra.50515/abstract http://hdl.handle.net/2381/28730 doi:10.1002/jgra.50515 2169-9402 |
op_rights |
© 2013. American Geophysical Union. All Rights Reserved. An edited version of this paper was published by AGU. |
op_doi |
https://doi.org/10.1002/jgra.50515 |
container_title |
Journal of Geophysical Research: Space Physics |
container_volume |
118 |
container_issue |
9 |
container_start_page |
5830 |
op_container_end_page |
5841 |
_version_ |
1766274448750542848 |