The evolution of a breaking mesospheric bore wave packet
All-sky CCD observations of mesospheric gravity waves have been made from Halley Station Antarctica (75.5°S, 26.7°W) as part of a collaborative research program between British Antarctic Survey, U.K. and Utah State University, USA. A mesospheric bore event was observed in the nightglow emissions ove...
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American Geophysical Union
2011
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ftnerc:oai:nora.nerc.ac.uk:15687 2023-05-15T13:45:11+02:00 The evolution of a breaking mesospheric bore wave packet Stockwell, R.G. Taylor, M.J. Nielsen, K. Jarvis, M.J. 2011-10-16 text http://nora.nerc.ac.uk/id/eprint/15687/ https://nora.nerc.ac.uk/id/eprint/15687/1/jgrd16983.pdf https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2010JD015321 en eng American Geophysical Union https://nora.nerc.ac.uk/id/eprint/15687/1/jgrd16983.pdf Stockwell, R.G.; Taylor, M.J.; Nielsen, K.; Jarvis, M.J. 2011 The evolution of a breaking mesospheric bore wave packet. Journal of Geophysical Research, 116 (D19), D19102. 16, pp. https://doi.org/10.1029/2010JD015321 <https://doi.org/10.1029/2010JD015321> Atmospheric Sciences Publication - Article PeerReviewed 2011 ftnerc https://doi.org/10.1029/2010JD015321 2023-02-04T19:30:00Z All-sky CCD observations of mesospheric gravity waves have been made from Halley Station Antarctica (75.5°S, 26.7°W) as part of a collaborative research program between British Antarctic Survey, U.K. and Utah State University, USA. A mesospheric bore event was observed in the nightglow emissions over a period of several hours on the 27th of May, 2001. Two dimensional S-Transform (ST) analysis is applied to the airglow images of this bore event. This local spectral technique allows one to calculate the wave parameters as a function of time and space. It is observed that the horizontal phase speed and wavelength decrease over time as the amplitude attenuates. Simultaneously with this wave event the background wind experiences a large acceleration in the direction of the wave propagation. Mesospheric bore theory calculations are used to estimate the bore duct depth and it is shown that as the wave packet evolves, the bore duct collapses (decreasing in its vertical extent). As the bore duct shrinks, the wave's group velocity decelerates, the amplitude attenuates, and the wave dissipates. Article in Journal/Newspaper Antarc* Antarctic Antarctica British Antarctic Survey Natural Environment Research Council: NERC Open Research Archive Antarctic Halley Station ENVELOPE(-26.541,-26.541,-75.581,-75.581) Journal of Geophysical Research 116 D19 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Atmospheric Sciences |
spellingShingle |
Atmospheric Sciences Stockwell, R.G. Taylor, M.J. Nielsen, K. Jarvis, M.J. The evolution of a breaking mesospheric bore wave packet |
topic_facet |
Atmospheric Sciences |
description |
All-sky CCD observations of mesospheric gravity waves have been made from Halley Station Antarctica (75.5°S, 26.7°W) as part of a collaborative research program between British Antarctic Survey, U.K. and Utah State University, USA. A mesospheric bore event was observed in the nightglow emissions over a period of several hours on the 27th of May, 2001. Two dimensional S-Transform (ST) analysis is applied to the airglow images of this bore event. This local spectral technique allows one to calculate the wave parameters as a function of time and space. It is observed that the horizontal phase speed and wavelength decrease over time as the amplitude attenuates. Simultaneously with this wave event the background wind experiences a large acceleration in the direction of the wave propagation. Mesospheric bore theory calculations are used to estimate the bore duct depth and it is shown that as the wave packet evolves, the bore duct collapses (decreasing in its vertical extent). As the bore duct shrinks, the wave's group velocity decelerates, the amplitude attenuates, and the wave dissipates. |
format |
Article in Journal/Newspaper |
author |
Stockwell, R.G. Taylor, M.J. Nielsen, K. Jarvis, M.J. |
author_facet |
Stockwell, R.G. Taylor, M.J. Nielsen, K. Jarvis, M.J. |
author_sort |
Stockwell, R.G. |
title |
The evolution of a breaking mesospheric bore wave packet |
title_short |
The evolution of a breaking mesospheric bore wave packet |
title_full |
The evolution of a breaking mesospheric bore wave packet |
title_fullStr |
The evolution of a breaking mesospheric bore wave packet |
title_full_unstemmed |
The evolution of a breaking mesospheric bore wave packet |
title_sort |
evolution of a breaking mesospheric bore wave packet |
publisher |
American Geophysical Union |
publishDate |
2011 |
url |
http://nora.nerc.ac.uk/id/eprint/15687/ https://nora.nerc.ac.uk/id/eprint/15687/1/jgrd16983.pdf https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2010JD015321 |
long_lat |
ENVELOPE(-26.541,-26.541,-75.581,-75.581) |
geographic |
Antarctic Halley Station |
geographic_facet |
Antarctic Halley Station |
genre |
Antarc* Antarctic Antarctica British Antarctic Survey |
genre_facet |
Antarc* Antarctic Antarctica British Antarctic Survey |
op_relation |
https://nora.nerc.ac.uk/id/eprint/15687/1/jgrd16983.pdf Stockwell, R.G.; Taylor, M.J.; Nielsen, K.; Jarvis, M.J. 2011 The evolution of a breaking mesospheric bore wave packet. Journal of Geophysical Research, 116 (D19), D19102. 16, pp. https://doi.org/10.1029/2010JD015321 <https://doi.org/10.1029/2010JD015321> |
op_doi |
https://doi.org/10.1029/2010JD015321 |
container_title |
Journal of Geophysical Research |
container_volume |
116 |
container_issue |
D19 |
_version_ |
1766215945623175168 |