AURORAL OVAL PLOTTER AND NOMOGRAPH FOR DETERMINING CORRECTED GEOMAGNETIC LOCAL TIME, LATITUDE, AND LONGITUDE FOR HIGH LATITUDES IN THE NORTHERN HEMISPHERE

A nomographic computer is presented which graphically converts geographical coordinates and universal time into geomagnetic coordinates and geomagnetic local time in the Corrected Geomagnetic system of Hultqvist. The computer is formulated as a map of high latitudes in the Northern Hemisphere on whi...

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Bibliographic Details
Main Author: Whalen, James A
Other Authors: AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA
Format: Text
Language:English
Published: 1970
Subjects:
Atmospheric Physics
Geomagnetism
Geodesy
*AURORAE
ACCURACY
ARCTIC REGIONS
CORRECTIONS
IONOSPHERE
NOMOGRAPHS
AURORAL OVAL
COORDINATES
Arctic
Online Access:http://www.dtic.mil/docs/citations/AD0713170
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0713170
Description
Summary:A nomographic computer is presented which graphically converts geographical coordinates and universal time into geomagnetic coordinates and geomagnetic local time in the Corrected Geomagnetic system of Hultqvist. The computer is formulated as a map of high latitudes in the Northern Hemisphere on which the position of the auroral oval can be projected directly for any time of day, for any magnetic activity, with account being taken of seasonal variation of the geomagnetic local time coordinate. Instructions for its use, discussion of its accuracy, and examples of its application are given.

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