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A COMPUTATIONAL MODEL OF THE GEOMAGNETIC FIELD.
AIR FORCE WEAPONS LAB KIRTLAND AFB NM
The field line which passes through a point in space may be traced by following the direction of the gradient of the geomagnetic field potential. The program described in this report provides a computational model which will trace the field line through a point in space. The point may be specified by giving the altitude, latitude, and longitude, or the field intensity, shell, and longitude of the point. The capability for tracing a single field line, a single shell, or a sequence of shells is provided. Most of the currently published spherical harmonic expansions for the geomagnetic field may be used. Author
Technical rept. 1 Jan-1 Jul 66,