Computer Science – Sound
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991p%26ss...39..895m&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 39, June 1991, p. 895-906. Research supported by University of Michigan and N
Computer Science
Sound
19
Aries Sounding Rocket, Auroral Arcs, Auroral Spectroscopy, Molecular Ions, Near Ultraviolet Radiation, Nitrogen Ions, Tomography, Brightness, Light Emission, Rocket Sounding
Scientific paper
A rocket tomography experiment designed to measure the two-dimensional distribution of the N2(+) 3914 A volume emission rates within an auroral arc is described. A simple filter photometer on board a sounding rocket, which was launched during the ARIES auroral campaign, was used to measure the 3914 A aruoral brightnesses at elevation angles ranging from 0 to 360 deg in the plane of the rocket trajectory. The measured auroral brightnesses have been tomographically inverted to recover the local 3914 A volume emissioin rates as a function of both altitude and latitude within the arc. The tomographic inversion procedure, which is based upon a maximum probability algebraic reconstruction approach, is described, and the implications of the results for studies of auroral excitation processes are briefly discussed.
Llewellyn Edam J.
Lloyd Nick D.
McDade Ian C.
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