Residual magnetization of various genetic rocks and ores of the Kola Region under the influence of mechanical oscillations
The paper considers magnetoelastic phenomena in rock samples. Research is of interest for solving problems of nonlinear geophysics, as well as of some issues of materials science. Magnetite-bearing rocks and ores have been sampled in different geological structures of the Kola region in order to stu...
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ftoceandocs:oai:aquadocs.org:1834/41525 2023-05-15T17:05:04+02:00 Residual magnetization of various genetic rocks and ores of the Kola Region under the influence of mechanical oscillations Остаточная намагниченность различных генетических пород и руд Кольского региона под воздействием механических колебаний Zhirova, A. M. Kola Peninsula Кольский полуостров 2020 pp.13-21 http://hdl.handle.net/1834/41525 ru rus http://vestnik.mstu.edu.ru/show-eng.shtml?art=2047 http://vestnik.mstu.edu.ru/show.shtml?art=2047 http://hdl.handle.net/1834/41525 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ Magnetoelastic effect Residual rock magnetization Магнитоупругий эффект Остаточная намагниченность пород Acoustic effect Акустический эффект ASFA_2015::G::Geology ASFA_2015::G::Geophysics Journal Contribution 2020 ftoceandocs 2023-04-06T17:06:58Z The paper considers magnetoelastic phenomena in rock samples. Research is of interest for solving problems of nonlinear geophysics, as well as of some issues of materials science. Magnetite-bearing rocks and ores have been sampled in different geological structures of the Kola region in order to study their magnetoelastic properties. All samples have been subject to elastic mechanical oscillations in laboratory conditions. The experiment has been conducted under changing impact parameters of acoustic waves. The effect of signal amplitude on magnetic properties of the samples has been first studied using magnetite-bearing amphibolites from the Serpovidny Ridge structure. According to results of the experiment, it is considered reasonable to use a pulse signal with higher amplitude in the future. An effect of a signal direction regarding a vector of residual magnetization has been studied, using rocks with different ferromagnetic contents. Values of natural residual magnetization of the studied samples vary from 100 А/m to 0.5 А/m. The study has indicated some relation between a spatial behavior of a vector and a direction of the acoustic impact in rocks with high magnetite content. In particular, the spatial location of the vector changes considerably, when the angle between the direction of the acoustic wave front and the magnetization vector of samples is 100 degrees and more. No statistically significant relations or patterns have been identified for low-magnetic samples. At the final stage, the effect of duration of elastic mechanical oscillations impact on magnetic properties of rocks has been studied. Results of the research also indicate an interrelation between an impact of this acoustic effect and an amount of the magnetic matter in the rock. Thus, a significant response of the samples' magnetic state is registered during the acoustic impact on rocks with high ferromagnetic content. In general, it has been concluded that studying electromagnetic effects on high-magnetic samples is more promising compared ... Other Non-Article Part of Journal/Newspaper kola peninsula IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications Kola Peninsula |
institution |
Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
Russian |
topic |
Magnetoelastic effect Residual rock magnetization Магнитоупругий эффект Остаточная намагниченность пород Acoustic effect Акустический эффект ASFA_2015::G::Geology ASFA_2015::G::Geophysics |
spellingShingle |
Magnetoelastic effect Residual rock magnetization Магнитоупругий эффект Остаточная намагниченность пород Acoustic effect Акустический эффект ASFA_2015::G::Geology ASFA_2015::G::Geophysics Zhirova, A. M. Residual magnetization of various genetic rocks and ores of the Kola Region under the influence of mechanical oscillations |
topic_facet |
Magnetoelastic effect Residual rock magnetization Магнитоупругий эффект Остаточная намагниченность пород Acoustic effect Акустический эффект ASFA_2015::G::Geology ASFA_2015::G::Geophysics |
description |
The paper considers magnetoelastic phenomena in rock samples. Research is of interest for solving problems of nonlinear geophysics, as well as of some issues of materials science. Magnetite-bearing rocks and ores have been sampled in different geological structures of the Kola region in order to study their magnetoelastic properties. All samples have been subject to elastic mechanical oscillations in laboratory conditions. The experiment has been conducted under changing impact parameters of acoustic waves. The effect of signal amplitude on magnetic properties of the samples has been first studied using magnetite-bearing amphibolites from the Serpovidny Ridge structure. According to results of the experiment, it is considered reasonable to use a pulse signal with higher amplitude in the future. An effect of a signal direction regarding a vector of residual magnetization has been studied, using rocks with different ferromagnetic contents. Values of natural residual magnetization of the studied samples vary from 100 А/m to 0.5 А/m. The study has indicated some relation between a spatial behavior of a vector and a direction of the acoustic impact in rocks with high magnetite content. In particular, the spatial location of the vector changes considerably, when the angle between the direction of the acoustic wave front and the magnetization vector of samples is 100 degrees and more. No statistically significant relations or patterns have been identified for low-magnetic samples. At the final stage, the effect of duration of elastic mechanical oscillations impact on magnetic properties of rocks has been studied. Results of the research also indicate an interrelation between an impact of this acoustic effect and an amount of the magnetic matter in the rock. Thus, a significant response of the samples' magnetic state is registered during the acoustic impact on rocks with high ferromagnetic content. In general, it has been concluded that studying electromagnetic effects on high-magnetic samples is more promising compared ... |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Zhirova, A. M. |
author_facet |
Zhirova, A. M. |
author_sort |
Zhirova, A. M. |
title |
Residual magnetization of various genetic rocks and ores of the Kola Region under the influence of mechanical oscillations |
title_short |
Residual magnetization of various genetic rocks and ores of the Kola Region under the influence of mechanical oscillations |
title_full |
Residual magnetization of various genetic rocks and ores of the Kola Region under the influence of mechanical oscillations |
title_fullStr |
Residual magnetization of various genetic rocks and ores of the Kola Region under the influence of mechanical oscillations |
title_full_unstemmed |
Residual magnetization of various genetic rocks and ores of the Kola Region under the influence of mechanical oscillations |
title_sort |
residual magnetization of various genetic rocks and ores of the kola region under the influence of mechanical oscillations |
publishDate |
2020 |
url |
http://hdl.handle.net/1834/41525 |
op_coverage |
Kola Peninsula Кольский полуостров |
geographic |
Kola Peninsula |
geographic_facet |
Kola Peninsula |
genre |
kola peninsula |
genre_facet |
kola peninsula |
op_relation |
http://vestnik.mstu.edu.ru/show-eng.shtml?art=2047 http://vestnik.mstu.edu.ru/show.shtml?art=2047 http://hdl.handle.net/1834/41525 |
op_rights |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
_version_ |
1766059454130814976 |