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搜索结果: 1-3 共查到地球物理学 Secular variation相关记录3条 . 查询时间(0.187 秒)
Geomagnetic secular variation, the generally slow, continuous change in the core magnetic field, is characterized by occasional rapid variations known as geomagnetic jerks. Recent studies on magnetic ...
A recent stage of the magnetic surveying activities in the Czech Republic was started in the fifties by setting up a basic network of the first order. It consists of 199 points. Complete measurements ...
Global Geomagnetic Secular Variation from 1956 to 1976 as Described by a Four-Dipole Model.

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