期刊
GEOPHYSICAL JOURNAL INTERNATIONAL
卷 148, 期 1, 页码 58-64出版社
BLACKWELL PUBLISHING LTD
DOI: 10.1046/j.0956-540x.2001.01558.x
关键词
coercivity; IRM acquisition; remanent magnetization; rock magnetism
The acquisition of isothermal remanent magnetization (IRM) curves through the application of stepwise-increasing uniaxial fields to a rock-magnetic sample provides an important non-destructive tool for the investigation of coercivity spectra (Dunlop & Ozdemir 1997). We show that. through the use of an automated procedure based on the expectation-maximization algorithm (Dempster et al. 1977), both saturated and non-saturated IRM acquisition curves can be effectively modelled into their individual coercivity contributions.
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