About CHRISTENSEN U R
About Georg-August Univ. Goettingen, Goettingen, DEU
About OLSON P
About Johns Hopkins Univ., MD, USA
About Physics of the Earth and Planetary Interiors
About geomagnetic field
About Geomagnetism in general
About 境界
About 熱流量
About 不均質性
About 数値
About 地球ダイナモ
About モデル
About 永年変化