A Study of Auroral & Polar Magnetic Substorms
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Date
1976
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Abstract
This study was an attempt to reproduce the field variations observed during a particular polar magnetic substorm by a simple model current system. A line current model consisting of flow down field lines, along auroral arcs and back out along field lines was used. A computer program utilizing a matrix form of the Biot-Savart law was written to calculate the effect of the model current system. Parameters of the system were adjusted to give a best fit. The westward electrojet was found to flow along or slightly poleward of the auroral forms. The eastward electrojet was found to flow slightly equatorward of the discrete aurora. Agreement of calculated and observed field variations was generally good.
Description
Program year: 1975/1976
Digitized from print original stored in HDR
Digitized from print original stored in HDR
Keywords
polar magnetic substorm, field variations, field lines, auroral arcs, Biot-Savart law, electrojet, discrete aurora