Physics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsa53a1250s&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SA53A-1250
Physics
[0310] Atmospheric Composition And Structure / Airglow And Aurora, [2471] Ionosphere / Plasma Waves And Instabilities, [3304] Atmospheric Processes / Atmospheric Electricity, [3384] Atmospheric Processes / Acoustic-Gravity Waves
Scientific paper
Airglow imaging observations using Utah State University Mesospheric Temperature Mapper (MTM) have been analyzed to investigate short-period gravity waves and their propagation characteristics in the low-latitude mesopause from Maui, Hawaii (20.70 N, 156.30 W). Gravity waves identified in the OH and O2 airglow emissions were propagating preferentially towards the north-east in summer and towards the north-west and south-west having bimodal form in winter. A total of the 167 events were recorded during 2004 period, exhibiting typical horizontal wavelengths of ~15-40 km, apparent phase speeds of ~30-65 m/s and apparent periods of ~7-16 min. Here we present the results of momentum fluxes carried by vertically propagating waves. Utilizing measurements of the local background wind field provided by the collocated University of Illinois meteor radar, the ground-relative and intrinsic wave parameters and hence the propagation nature of the waves were derived.
Franke Steven J.
Simkhada D. B.
Taylor Mary Jane
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