Computer Science – Sound
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91.6979d&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 91, June 1, 1986, p. 6979-6985. DNA-supported research.
Computer Science
Sound
12
Auroras, Birkeland Currents, Electrodynamics, Ionospheric Conductivity, Ionospheric Currents, Polar Regions, Satellite Sounding, Current Density, Electric Fields, Electric Potential, Electron Precipitation, Ionospheric Heating
Scientific paper
Data obtained from the HILAT satellite between 1021 and 1029 UT as it crossed the northern auroral zone near 0400 MLT from 70 deg down to 47 deg geomagnetic latitude are analyzed. Calculations are presented of the electric field component along the satellite trajectory and perpendicular to the auroral form. This component emerges as a solution to the current continuity equation in the infinite current approximation with appropriate boundary conditions. Attention is given to the accurate representation of the Birkeland current density in the region of the bright auroral form. It is found that large-scale features are well represented by the calculations, and that calculations of both the auroral zone potential drop and the height integrated Joule heating varied only slightly from measured values. During this particular pass, the ionospheric Joule heating exceeded the particle energy deposition along the satellite trajectory by a factor of 2.6.
Burke William J.
Bythrow Peter F.
Doyle M. A.
Hardy David A.
Rich Frederic J.
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