Abstract
“Magnetic Maps 1975 of the Antarctic” has been compiled by the Geographical Survey Institute (GSI). Most of its data have been sent to GSI by countries joining to the Scientific Committee on Antarctic Research (SCAR) at its request through SCAR to be submitted to the spherical harmonic analysis.Distribution of the earth's magnetic field and its annual change are represented in seven maps corresponding to each component by the illustration of isomagnetic and isoporic lines respectively. Residual total intensity at the observation points is shown on the eighth map.Location of the south magnetic pole is obtained. It has been moving on the Continent toward north or northwest direction and is now located at a point off the coast of Adelie Land. It appears that the dipole moment of the earth's magnetic field is still decreasing at an approximately constant rate.
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