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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ftleicesterunfig:oai:figshare.com:article/10127126 2023-05-15T14:03:49+02:00 Characteristics of medium-scale traveling ionospheric disturbances observed near the Antarctic Peninsula by HF radar Adrian Grocott K. Hosokawa T. Ishida Mark Lester Steve Milan M. P. Freeman N. Sato A. S. Yukimatu 2013-09-01T00:00:00Z https://figshare.com/articles/journal_contribution/Characteristics_of_medium-scale_traveling_ionospheric_disturbances_observed_near_the_Antarctic_Peninsula_by_HF_radar/10127126 unknown 2381/28730 https://figshare.com/articles/journal_contribution/Characteristics_of_medium-scale_traveling_ionospheric_disturbances_observed_near_the_Antarctic_Peninsula_by_HF_radar/10127126 All Rights Reserved Uncategorized 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 Text Journal contribution 2013 ftleicesterunfig 2021-11-11T20:01:12Z 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. Other Non-Article Part of Journal/Newspaper Antarc* Antarctic Antarctic Peninsula University of Leicester: Figshare Antarctic The Antarctic Antarctic Peninsula |
institution |
Open Polar |
collection |
University of Leicester: Figshare |
op_collection_id |
ftleicesterunfig |
language |
unknown |
topic |
Uncategorized 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 |
Uncategorized 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 Adrian Grocott K. Hosokawa T. Ishida Mark Lester Steve Milan M. P. Freeman N. Sato A. S. Yukimatu Characteristics of medium-scale traveling ionospheric disturbances observed near the Antarctic Peninsula by HF radar |
topic_facet |
Uncategorized 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. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Adrian Grocott K. Hosokawa T. Ishida Mark Lester Steve Milan M. P. Freeman N. Sato A. S. Yukimatu |
author_facet |
Adrian Grocott K. Hosokawa T. Ishida Mark Lester Steve Milan M. P. Freeman N. Sato A. S. Yukimatu |
author_sort |
Adrian Grocott |
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 |
publishDate |
2013 |
url |
https://figshare.com/articles/journal_contribution/Characteristics_of_medium-scale_traveling_ionospheric_disturbances_observed_near_the_Antarctic_Peninsula_by_HF_radar/10127126 |
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 |
2381/28730 https://figshare.com/articles/journal_contribution/Characteristics_of_medium-scale_traveling_ionospheric_disturbances_observed_near_the_Antarctic_Peninsula_by_HF_radar/10127126 |
op_rights |
All Rights Reserved |
_version_ |
1766274681249202176 |