Accession Number : AD0839516

Title :   AN EVALUATION OF THE 1965.0 EPOCH, H. O. 1706 WORLD MAGNETIC VARIATION CHART.

Descriptive Note : Technical rept.,

Corporate Author : NAVAL OCEANOGRAPHIC OFFICE NSTL STATION MS

Personal Author(s) : Hill, Donald W.

Report Date : JUN 1968

Pagination or Media Count : 308

Abstract : An evaluation of the 1965.0 epoch, H. O. 1706 World Magnetic Variation Chart is performed by direct comparison of charted and observed values. Results of this study provide an estimate of chart reliability based on the correlation of the computed spherical harmonic surface and individual field data values. (Author)

Descriptors :   (*GEOMAGNETISM, MAPS), MAGNETIC NAVIGATION, MATHEMATICAL MODELS, CORRELATION TECHNIQUES, CONFIDENCE LIMITS, SPECIAL FUNCTIONS(MATHEMATICAL), ACCURACY.

Subject Categories : Geomagnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE