…Even in the absence of a DC magnetic field, the rotation during AC demagnetization can cause residual magnetization in the rocks that are to be demagnetized. This residual magnetization is called rotational remanent magnetization, and can be a problem when the magnetic strength of the rocks is very weak. Of the remanent magnetizations mentioned above, thermal remanent magnetization and sedimentary remanent magnetization are often the ones that are measured, but natural remanent magnetization must be examined while taking into account that the effects of several remanent magnetizations overlap. … *Some of the terminology that refers to "rotational remanent magnetization" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…直流磁場がない場合でも,交流消磁中の回転が原因となって消磁すべき岩石に,逆に残留磁化を与えることがある。この残留磁化を回転残留磁化と呼び,岩石の磁化強度が非常に小さな場合に問題となることがある。上に述べた残留磁化のうち,しばしば測定対象となるのは熱残留磁化,堆積残留磁化であるが,いくつかの残留磁化の効果が重なっていることを考慮した上で,自然残留磁化を調べなければならない。… ※「回転残留磁化」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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