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Journal ArticleDOI

Basic magnetic properties of rocks under the effects of mechanical stresses

Takesi Nagata
- 01 Mar 1970 - 
- Vol. 9, pp 167-195
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TLDR
In this article, the effects of mechanical stresses on the magnetization of the earth's crust can be classified in two categories: (a) the reversible effect which disappears when the stress is removed; and (b) the irreversible effect which causes an irreversible enhancement or an irreversible demagnetization of remanent magnetization.
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This article is published in Tectonophysics.The article was published on 1970-03-01. It has received 103 citations till now. The article focuses on the topics: Remanence & Magnetization.

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Citations
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Journal ArticleDOI

Correlation between Time Change in Modulus of Short-Period Geomagnetic Variation and Seismicity in Taiwan

TL;DR: In this article, the amplitude variation of short-period geomagnetic total intensity data, using the complex demodulation method (CD method), was used to compare these time changes with seismicity.
Journal ArticleDOI

Changes of parameters of magnetic anisotropy of foliated rocks under pressure

TL;DR: In this article, the changes of magnetic anisotropy under pressure were studied on a set of rocks with marked macroscopic stratification, collected from the Rjviz borehole.
Journal ArticleDOI

Measuring magnetic fluctuations from seismic waves using a superconductive gradiometer

TL;DR: In this article, a new application of superconductive magnetic gradiometry to a geophysical problem is presented, which monitors changes in the ambient stress of magnetic strata near earthquake faults.
Journal ArticleDOI

The stability of isothermal and natural remanent magnetic polarization under elastic deformation of rocks

TL;DR: In this article, it was shown that the physical cause of these changes are the irreversible changes of the domain structure of ferrimagnetic minerals, and that secondary magnetization combined with possible elastic deformations of rocks in the Earth's crust can be eliminated relatively easily by magnetic cleaning.
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Seismo-Magnetic Studies between Dokurcun and Abant Area along the North Anatolian Fault Zone, Turkey

TL;DR: In this paper, the magnetic measurements have been conducted between Dokurcun and Abant pilot area of Turkish-German Earthquake Research Project which is located on the western part of the North Anatolian Fault Zone.
References
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Journal ArticleDOI

The seismomagnetic effect

TL;DR: In this article, the authors calculate local variations in the geomagnetic field, which are produced by stress changes in crustal rocks, from the stress patterns and the piezomagnetic properties of the rocks down to the Curie point isotherm.
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Earthquake Energy, Earthquake Volume, Aftershock Area, and Strength of the Earth's Crust

TL;DR: In this article, the authors deduced the energy of the largest possible earthquake from the spatial distribution of the stress energy within the earth's crust, which was then combined with the magnitude energy relation due to GUTENBERG and RICHTER, yielding a formulaE=6×102×A1·5.
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Effects of Uniaxial Compression on Remanent Magnetization

TL;DR: In this article, the effect of directional stress on the remanent magnetization of magnetite bearing rocks and nickel polycrystallites was investigated and a nearly reversible change in intensity was found when the direction of compression is perpendicular to that of TRM.
Journal ArticleDOI

The effect of stress on the susceptibility and magnetization of a partially magnetized multidomain system

TL;DR: In this article, a model for partial magnetization of an isotropic multidomain magnetic system was proposed and the behavior of the model system in response to applied stress was analyzed.
Journal ArticleDOI

Theory of the magnetic susceptibility of stressed rock

TL;DR: In this paper, the authors calculated the stress dependence of magnetic susceptibility of igneous rock from the multidomain theory of magnetic grains, assuming that the magnetic mineral is pure magnetite whose saturation magnetization, magnetocrystalline anisotropy and saturation magnetostriction are known.
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