An Unusual Mesospheric Bore Event Observed at High Latitudes over Antarctica
All-sky CCD observations of short-period mesospheric gravity waves have been made from Halley Station, Antarctica (76S, 27W). On 27 May, 2001, an unusual wave event exhibiting several features characteristic of a ‘‘bore’’ was observed in the OH, Na, and O2 nightglow emissions. Mesospheric bores are...
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ftutahsudc:oai:digitalcommons.usu.edu:physics_facpub-2185 2023-05-15T13:54:20+02:00 An Unusual Mesospheric Bore Event Observed at High Latitudes over Antarctica Nielsen, K. Taylor, Michael J. Stockwell, R G. Jarvis, M. J. American Geophysical Union 2006-04-01T08:00:00Z application/pdf https://digitalcommons.usu.edu/physics_facpub/1186 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=2185&context=physics_facpub unknown Hosted by Utah State University Libraries https://digitalcommons.usu.edu/physics_facpub/1186 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=2185&context=physics_facpub Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact the Institutional Repository Librarian at digitalcommons@usu.edu. PDM All Physics Faculty Publications Mesospheric Bore Event Antarctica Physics text 2006 ftutahsudc 2022-03-07T22:24:23Z All-sky CCD observations of short-period mesospheric gravity waves have been made from Halley Station, Antarctica (76S, 27W). On 27 May, 2001, an unusual wave event exhibiting several features characteristic of a ‘‘bore’’ was observed in the OH, Na, and O2 nightglow emissions. Mesospheric bores are rare wave events that have previously been observed at mid- and low-latitudes. This event was particular interesting as: (1) it initially appeared as a single, high contrast, linear front, accompanied by a sharp enhancement in intensity in all three emissions, (2) a number of trailing wave crests were observed to form with a measured growth rate of 6.6 waves/hr, and (3) the wave pattern exhibited unusual dynamics with significant variability in the observed phase speed and a reduction in the horizontal wavelength by 50% over a 1-hr period. The location of Halley and the observed propagation suggests a ducted wave consistent with current bore models. Text Antarc* Antarctica Utah State University: DigitalCommons@USU Halley Station ENVELOPE(-26.541,-26.541,-75.581,-75.581) |
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Open Polar |
collection |
Utah State University: DigitalCommons@USU |
op_collection_id |
ftutahsudc |
language |
unknown |
topic |
Mesospheric Bore Event Antarctica Physics |
spellingShingle |
Mesospheric Bore Event Antarctica Physics Nielsen, K. Taylor, Michael J. Stockwell, R G. Jarvis, M. J. An Unusual Mesospheric Bore Event Observed at High Latitudes over Antarctica |
topic_facet |
Mesospheric Bore Event Antarctica Physics |
description |
All-sky CCD observations of short-period mesospheric gravity waves have been made from Halley Station, Antarctica (76S, 27W). On 27 May, 2001, an unusual wave event exhibiting several features characteristic of a ‘‘bore’’ was observed in the OH, Na, and O2 nightglow emissions. Mesospheric bores are rare wave events that have previously been observed at mid- and low-latitudes. This event was particular interesting as: (1) it initially appeared as a single, high contrast, linear front, accompanied by a sharp enhancement in intensity in all three emissions, (2) a number of trailing wave crests were observed to form with a measured growth rate of 6.6 waves/hr, and (3) the wave pattern exhibited unusual dynamics with significant variability in the observed phase speed and a reduction in the horizontal wavelength by 50% over a 1-hr period. The location of Halley and the observed propagation suggests a ducted wave consistent with current bore models. |
author2 |
American Geophysical Union |
format |
Text |
author |
Nielsen, K. Taylor, Michael J. Stockwell, R G. Jarvis, M. J. |
author_facet |
Nielsen, K. Taylor, Michael J. Stockwell, R G. Jarvis, M. J. |
author_sort |
Nielsen, K. |
title |
An Unusual Mesospheric Bore Event Observed at High Latitudes over Antarctica |
title_short |
An Unusual Mesospheric Bore Event Observed at High Latitudes over Antarctica |
title_full |
An Unusual Mesospheric Bore Event Observed at High Latitudes over Antarctica |
title_fullStr |
An Unusual Mesospheric Bore Event Observed at High Latitudes over Antarctica |
title_full_unstemmed |
An Unusual Mesospheric Bore Event Observed at High Latitudes over Antarctica |
title_sort |
unusual mesospheric bore event observed at high latitudes over antarctica |
publisher |
Hosted by Utah State University Libraries |
publishDate |
2006 |
url |
https://digitalcommons.usu.edu/physics_facpub/1186 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=2185&context=physics_facpub |
long_lat |
ENVELOPE(-26.541,-26.541,-75.581,-75.581) |
geographic |
Halley Station |
geographic_facet |
Halley Station |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
All Physics Faculty Publications |
op_relation |
https://digitalcommons.usu.edu/physics_facpub/1186 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=2185&context=physics_facpub |
op_rights |
Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact the Institutional Repository Librarian at digitalcommons@usu.edu. |
op_rightsnorm |
PDM |
_version_ |
1766260044500828160 |