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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

Cloud‐to‐ground lightning dipole moment from simultaneous observations by ELF receiver and combined direction finding and time‐of‐arrival lightning detection system

TL;DR: In this paper, a new method of automatic detection of ELF impulses related to cloud-to-ground lightning at distances 1-2m from a broadband ELF receiver and also a new numerical automated technique for calculating the lightning dipole moment was presented.
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Stress dependence of magnetization and magnetic properties of igneous rocks

TL;DR: In this paper, the effect of compression on the magnetization of rocks has been examined for the dependence of the structure on the magnetic fraction and on its composition, and it is revealed that these relations are also different for each group of samples, and depend on the composition of the magnetic fractions and the state of internal stresses.
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Reply [to “Comment on ‘Impact demagnetization by phase transition on Mars’” by P. Surdas Mohit]

TL;DR: Mohit et al. as discussed by the authors showed that magnetic fields are significantly weaker within several radii of the Hellas and Argyre basins than they are in the adjacent southern highlands.
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The piezomagnetic effect in rocks: a comparison of measurements in high and low fields

TL;DR: In this paper, a comprehensive study of magnetic and microscopic properties was undertaken to seek the cause(s) of the discrepancies in magnetic susceptibility in low-field torquemeter measurements of a number of rocks.
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Effect of Elastic and Plastic Deformations on the Remanent Magnetization of an Ensemble of Nanoparticles

TL;DR: In this paper, the effect of mechanical stresses on the remanent magnetization has been investigated in terms of the model of single-domain noninteracting nanoparticles and relationships have been obtained which define two main types of remanence in the entire range of stresses.
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.
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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.
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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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