Compilation of Magnetic Maps of Antarctic Region for 1975

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概要

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• "Magnetic Maps 1975 of the Antarctic" have been compiled by the Geographical Survey Institute of Japan (GSI). At the request of the Scientific Committee on Antarctic Research (SCAR), the data of observation and survey by the member countries of SCAR were sent to GSI for the purpose of spherical harmonic analysis. Distribution and annual change of the earth's magnetic field are represented by isomagnetic and isoporic lines respectively in seven maps corresponding to seven components. Residual total intensity at observation points is shown on the eighth map, where general distribution of magnetic anomaly is illustrated by colored circles of 7 classes. Location of the south magnetic pole was ascertained. The pole has been moving on the Continent toward north or northwest, 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.

• 国立極地研究所の論文

著者

• Tazima Minoru

  The Geographical Survey Institute

• Haruyama Hitoshi

  The Geographical Survey Institute

関連論文

• Compilation of Magnetic Maps of Antarctic Region for 1975

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