Vestnik Kamchatskoy regional'noy assotsiatsii «Uchebno-nauchnyy tsentr». Seriya: Nauki o Zemle
Institute of Volcanology and Seismology FEB RAS
Comments on the article by D.S. Tyagunov and A.F. Shestakov «Registration of low-frequency electromagnetic emission by a magnetomodulation sensor in laboratory experiments on the destruction of rock samples»
PDF (Russian)

Keywords

destruction of rock samples
electromagnetic radiation
magnetic induction

Section

Discussions

Abstract

The commentary presents the results of the analysis of experimental data given in the article under discussion. The analysis revealed several serious inconsistencies and discrepancies, indicating the imperfection of the applied experimental methodology and measuring instruments. A discrepancy has been found between the stated capabilities of the measuring device and the quantitative characteristics of the recorded signal, which casts doubt on the reliability of the primary data Based on several simple physical models, the characteristics of the source of the recorded magnetic effect were calculated, showing that it is impossible to generate a magnetic field with the values given in the article under the described experimental conditions. An analysis of the results of publications on the measurement of electrical effects accompanying the loading of the sample was carried out. A comparison with data published in other sources was carried out, revealing a multiple (by several orders of magnitude) discrepancy between the magnetic field value given in the article under discussion and the data from similar experiments. It is shown that the connection between the recorded magnetic effect and the destruction of the sample is extremely unlikely. Recommendations and experiments on detection and identification of sources of the magnetic field observed during the sample destruction in a laboratory setup are proposed.

PDF (Russian)

References

Магниторазведка. Справочник геофизика. // Под ред. В.Е. Никитского и Ю.С. Глебовского. М.: Недра, 1990. 470 с. [Magnetic prospecting. Geophysicist's handbook. // Edited by V.E. Nikitsky, Yu.S. Glebovsky. Moscow: Nedra, 1990. 470 p. (in Russian)].

Сокол-Кутыловский О.Л., Тягунов Д.С. Аппаратура для регистрации магнитного поля низких частот // Уральский геофизический вестник. 2007. № 4(13). С. 69–73 [Sokol-Kutylovsky O.L., Tyagunov D.S. Equipment for registration of the magnetic field of low frequencies // Ural Geophysical Bulletin. 2007. № 4(13). P. 69–73 (in Russian)].

Сокол-Кутыловский О.Л. О пороге чувствительности магнитомодуляционных датчиков // Уральский геофизический вестник. 2010. № 2(17). С. 62–65 [Sokol-Kutylovsky O.L. On the threshold of sensitivity of magnetomodulation sensors // Ural Geophysical Bulletin. 2010. № 2(17). P. 62–65 (in Russian)].

Справочник (кадастр) физических свойств горных пород. // Под ред. Н.В. Мельникова, В.В. Ржевского, М.М. Протодиаконова. М.: Недра, 1975. 279 с. [Handbook (cadastre) of physical properties of rocks. // Edited by N.V. Melnikov, V.V. Rzhevsky, M.M. Protodiakonov. Moscow: Nedra, 1975. 279 p. (in Russian)].

Сурков В.В. Электромагнитные эффекты при землетрясениях и взрывах. М.: МИФИ, 2000. 447 с. [Surkov V.V. Electromagnetic effects in earthquakes and explosions. Moscow: MEPhI, 2000. 447 p. (in Russian)].

Тягунов Д.C., Шестаков А.Ф. Регистрация магнитомодуляционным датчиком низкочастотного электромагнитного излучения в лабораторных экспериментах по разрушению образцов горных пород // Вестник КРАУНЦ. Серия: Науки о Земле. 2024. № 3 (63). C. 18–28. https://doi.org/10.31431/1816-5524-2024-3-63-18-28 [Registration of low-frequency electromagnetic emission by a magnetomodulation sensor in laboratory experiments on destruction of rock samples (in Russian)].

Фалей М.И., Масленников Ю.В., Кошелец В.П. Измерительные системы на ВТСП СКВИДАх // Радиотехника. 2012. № 12. С. 5–26 [Faley M.I., Maslennikov Yu.V., Koshelets V.P. Measuring systems on high-temperature superconductor of SQUIDs» // Radiotekhnika. 2012. № 12. P. 5–26].

Физические свойства горных пород и полезных ископаемых (петрофизика). Справочник геофизика // Под ред. Н.Б. Дортман. М.: Недра, 1984. 455 с. [Physical properties of rocks and minerals (petrophysics). Geophysicist's handbook // Edited by N.B. Dortman. Moscow: Publishing House «Nedra», 1984. 455 p. (in Russian)].

Электроразведка. Справочник геофизика. Книга первая. // Под ред. В.К. Хмелевского и В.М. Бондаренко. М.: Недра, 1989. 438 с. [Electrical prospecting. Geophysicist's handbook. // Edited by V.K. Khmelevskoi, V. M. Bondarenko. Moscow: Nedra, 1989. Vol. 1. 438 p. (in Russian)].

Hadjicontis V., Mavromatou C. Transient electric signals prior to rock failure under uniaxial compression // Geophysical Research Letters. 1994. V. 21. № 16. P. 1687–1690.

Li C., Fu S., Guan C. et al. Characteristics and generation mechanism of ULF magnetic signals during coal deformation under uniaxial compression. Journal of Geophysics and Engineering. 2018. V. 15. Iss. 4. P. 1137–1145. https://doi.org/10.1088/1742-2140/aaac59

OP37 Low Noise, Precision, High Speed Operational Amplifier. https://www.analog.com/media/en/technical-documentation/data-sheets/op37.pdf (дата обращения 2025-06-30).

OP177 Ultraprecision Operational Amplifier. https://www.analog.com/media/en/technical-documentation/data-sheets/op177.pdf

SF1500 – SF2600 Class B seismic sensor for strong motion earthquake monitoring or structural health monitoring. https://sensorsandpower.angst-pfister.com/fileadmin/products/datasheets/190/SF1500-SF2600_1640-21481-0003-E-0811.pdf

Sokol-Kutylovskii O.L. Magnetomodulation sensors based on amorphous ferromagnetic alloys // Measurement Techniques. 2016. V. 59. № 2. P. 170–175. https://doi.org/10.1007/s11018-016-0937-x

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Copyright (c) 2026 А.Д. Коноплин, В.А. Щапов