NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Vertical velocities and momentum fluxes derived from wind measurements in the dusk auroral ovalResults are presented on a chemical release experiment carried out on March 20, 1985 in connection with NASA's Cooperative Observations of Polar Electrodynamics I campaign. Simultaneous neutral wind measurements in E region were carried out at three separate locations over a triangular region with sides of about 150 km in the dusk auroral oval, and the three wind profiles were used to calculate values of divergence and vorticity over the area. The vertical velocity over the hight range was calculated using the mass continuity equation, and the instantaneous vertical momentum fluxes in the E region were derived using the combination of horizontal-wind measurements and calculated vertical velocities. Results show that there is strong coupling between layers in the E region and that the momentum-flux-induced accelerations are at least comparable in magnitude to the pressure gradient and Coriolis force accelerations.
Document ID
19910034361
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Larsen, M. F.
(Clemson University SC, United States)
Mikkelsen, I. S.
(Meteorologisk Institut Copenhagen, Denmark)
Date Acquired
August 15, 2013
Publication Date
December 1, 1990
Publication Information
Publication: Journal of Geophysical Research
Volume: 95
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
91A18984
Funding Number(s)
CONTRACT_GRANT: NAG5-632
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available