Analysis of isothermal remanent magnetization acquisition curves using the expectation-maximization algorithm

被引：217

作者：

Heslop, D ^{[1
]}

Dekkers, MJ ^{[1
]}

Kruiver, PP ^{[1
]}

van Oorschot, IHM ^{[1
]}

机构：

[1] Univ Utrecht, Fac Earth Sci, Palaeomagnet Lab Ft Hoofddijk, NL-3584 CD Utrecht, Netherlands

来源：

GEOPHYSICAL JOURNAL INTERNATIONAL | 2002年 / 148卷 / 01期

关键词：

coercivity; IRM acquisition; remanent magnetization; rock magnetism;

D O I：

10.1046/j.0956-540x.2001.01558.x

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

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.

引用

页码：58 / 64

页数：7

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