Journal ArticleDOI
Basic magnetic properties of rocks under the effects of mechanical stresses
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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.About:
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.read more
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Effect of shock on the magnetic properties of pyrrhotite, the Martian crust, and meteorites
TL;DR: The authors performed planar shock recovery experiments on natural pyrhotite at pressures up to 6.9 GPa and found that high-field isothermal remanent magnetization in pyrrhotite is demagnetized up to 90% by shock due to preferential removal of low coercivity components of magnetization.
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A volcanomagnetic observation on mount st. helens, washington
Paul M. Davis,D. R. Pierce,R. L. McPherron,Daniel Dzurisin,Thomas Murray,Malcolm J. S. Johnston,R. J. Mueller +6 more
TL;DR: In this paper, the authors show that magnetic anomaly fields on Mt. St. Helens show no correlation with magnetic changes and, in the long term, are uncorrelated with eruptive activity.
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A numerical model of earthquake‐induced piezomagnetic anomalies
J. Zlotnicki,F. H. Cornet +1 more
TL;DR: In this paper, a numerical model for evaluating the order of magnitude of earthquake-induced piezomagnetic anomalies is proposed, which is based on the mean of displacement discontinuity method.
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EM Monitoring of Crustal Processes Including the Use of the Network-MT Observations
TL;DR: In this article, a Network-MT observation technique has been developed to determine large-scale deep electrical conductivity structure, which can also be applied to monitor the electric potential field related to crustal activities.
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Investigation of induced magnetization variations caused by triaxial stresses
TL;DR: In this paper, the authors investigated the change in induced magnetization caused by triaxial stress variations on andesite specimens and found that axial magnetization increased with axial load increments.
References
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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
Mitiyasu Ohnaka,Hajimu Kinoshita +1 more
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.