Short-term electromagnetic precursors of earthquakes

Довбня, Б. В.; Пашинин, А. Ю.; Рахматулин, Р. А.

doi:10.5800/gt-2019-10-3-0438

Cited by 11 publications

(3 citation statements)

References 19 publications

(18 reference statements)

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“…) with the closest earthquake in the catalog (International Seismologi cal Center, ISC Catalogues, (www.isc.ac.uk)) with specific geographic coordinates of the epicenter. The methodology of the analysis was described in detail earlier [Dovbnya et al, 2006] and additionally in [Dovbnya et al, 2019;Dovbnya, 2021Dovbnya, , 2022. The signal amplitudes were evaluated on the oscillograms with a sweeping time of 30 mm min -1 .…”

Section: Initial Materials the Methods Of The Analysismentioning

confidence: 99%

Electromagnetic Field Response to Impulsive Processes in the Earthquakes

V.Dovbnya

2023

EAR

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Looking for electromagnetic effects of earthquakes, pulse signals are detected preceding the moment of the event or following it. The advance or delay is from 0 s to 200 s. The signals are observed as single or pair pulses in the frequency range 0-5 Hz. Dynamical spectra of the signals are presented and their characteristics are discussed. The signals impact actively on the magnetosphere and ionosphere. As a result of such impact a sharp change in the regime of geomagnetic pulsation excitation may occur. The detected response of the pulsations is considered and analyzed.

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Section: Initial Materials the Methods Of The Analysismentioning

confidence: 99%

Electromagnetic Field Response to Impulsive Processes in the Earthquakes

V.Dovbnya

2023

EAR

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“…Anomalous ULF disturbances during the activation of seismic activity may have an impulsive character [Bleier et al, 2009;Naumov, 1999]. An amazing phenomenon was described in a series of papers [Dovbnya, 2011[Dovbnya, , 2014[Dovbnya, , 2021Dovbnya et al, 2006Dovbnya et al, , 2008Dovbnya et al, , 2019 -the appearance of global magnetic impulses a few minutes before the seismic shock (see example in Figure 1). The effect was found from the data of induction magnetometers at stations Borok and College, separated by 12 h in longitude and 10 • in latitude.…”

Section: Geomagnetic Impulses Before Quakesmentioning

confidence: 99%

A Closer Cooperation between Space and Seismology Communities – a Way to Avoid Errors in Hunting for Earthquake Precursors

Pilipenko,

Shiokawa

2024

Russian Journal of Earth Sciences

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The space physicists and the earthquake (EQ) prediction community exploit the same instruments – magnetometers, but for different tasks: space physicists try to comprehend the global electrodynamics of near-Earth space on various time scales, whereas the seismic community develops electromagnetic methods of short-term EQ prediction. The lack of deep collaboration between those communities may result sometimes in erroneous conclusions. In this critical review, we demonstrate some incorrect results caused by a neglect of specifics of geomagnetic field evolution during space weather activation. The considered examples comprise: Magnetic storms as a trigger of EQs; ULF waves as a global EQ precursor; Geomagnetic impulses before seismic shocks; Long-period geomagnetic disturbances generated by strong EQs; Discrimination of underground ULF sources by amplitude-phase gradients; Depression of ULF power as a short-term EQ precursor; and Detection of seimogenic emissions by satellites. To verify the reliability of the above widely disseminated results data from available arrays of fluxgate and search-coil magnetometers have been re-analyzed. In all considered events, the “anomalous” geomagnetic field behavior can be explained by global geomagnetic activity, and it is apparently not associated with seismic activity. This critical review does not claim that ULF electromagnetic field cannot be used as a sensitive indicator of the EQ preparation processes, but we suggest that both communities must cooperate their studies more tightly using data exchange, combined usage of magnetometer networks, organization of CDAW for unique events, etc.

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“…Отдельно стоят задачи поисков предвестников землетрясений. Международным сообществом активно ведутся исследования вопроса кратковременного прогноза землетрясений в электромагнитных [Dovbnya et al, 2019] и ионосферных [Pulinets et al, 2004] Astafyeva, 2008].…”

Section: солнечно-земная физика и геодинамикаunclassified

Shared Research Facilities "Solar-Terrestrial Physics and Control of Near-Earth Space" ("The Angara") as Applied for Geodynamics and Tectonophysics

Yasyukevich

Vesnin

2022

Geodin. tektonofiz.

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The paper considers an experimental complex of the Shared Research Facilities "The Angara" of ISTP SB RAS. Although the centre aims to study Near-Earth space, scientists could use some equipment for research in geodynamics. We mainly described the Siberian network of receivers of signals from global navigation satellite systems SibNet that currently includes ten receiving points. We also provide information on the fields where "non-geodynamic" equipment can be used for multidisciplinary studies of lithospheric processes.

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Short-term electromagnetic precursors of earthquakes

Cited by 11 publications

References 19 publications

Electromagnetic Field Response to Impulsive Processes in the Earthquakes

Electromagnetic Field Response to Impulsive Processes in the Earthquakes

A Closer Cooperation between Space and Seismology Communities – a Way to Avoid Errors in Hunting for Earthquake Precursors

Shared Research Facilities "Solar-Terrestrial Physics and Control of Near-Earth Space" ("The Angara") as Applied for Geodynamics and Tectonophysics

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