Abstract
In this work, it is shown that early warning signals were recorded prior to a 6.4 magnitude earthquake that took place on December 29, 2020, near the Croatian city of Petrinja. The study relied on analyzing property changes in small-scale probability density fluctuations in three parameters of the Earth’s magnetic field: X, Y and Z. The applied technique made it possible to identify a set of these precursors in intervals ranging from two and a half days to one day to less than one hour before this event. It has been observed that the three magnetic variation stations located at distances of approximately 300, 1000, and 1500 km from the epicenter exhibit significant differences in the occurrence of early warning signs and critical phenomena during an impending earthquake. These differences are related to the intensity and frequency of the effects observed at each station.
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Acknowledgements
Authors are grateful to the various institutions supporting their work and also to INTERMAGNET, which promotes high levels of magnetic observation (www.intermagnet.org).
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A E Volvach, L P Kogan, K H Kanonidi, L N Volvach, I T Bubukin, V B Shtenberg, A G Aronov, G A Aronov, L L Pustoshilo: Conceived and designed the experiments; performed the experiments; analyzed and interpreted the data; contributed reagents, materials, analysis tools or data; and wrote the paper.
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Communicated by Sagarika Mukhopadhyay
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Volvach, A.E., Kogan, L.P., Volvach, L.N. et al. Statistical precursors of the 6.4 magnitude earthquake on December 29, 2020, near Petrinja town, Croatia. J Earth Syst Sci 133, 64 (2024). https://doi.org/10.1007/s12040-024-02273-8
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DOI: https://doi.org/10.1007/s12040-024-02273-8