Abstract
Based on instrumental observations made at a number of the INTERMAGNET network observatories, at the Mikhnevo Geophysical Observatory, and at the Center for Geophysical Monitoring (Institute of Geospheric Dynamics, Russian Academy of Sciences, Moscow), the acoustic, magnetic, and electrical effects accompanying the November 26, 2019, earthquake in Albania are analyzed. It is shown that this seismic event was accompanied by disturbances in the physical fields at considerable distances from the epicenter. At the same time, the parameters of induced variations in the atmospheric current and magnetic and electric fields allowed them to be recorded confidently by the available instrumentation. The results of recording infrasound signals caused by vertical movements of the Earth’s crust in Rayleigh waves, as well as of recording the signal propagating along a stratospheric waveguide, are presented.
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Notes
02:54 UT (Mw = 6.4); 02:59 UT (Mb = 5.1); 03:03 UT (Mb = 5.3).
It should be borne in mind that the arrival of Rayleigh waves, generated by vertical motions of the Earth’s crust, should be considered as one of the likely causes of the observed effect.
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The investigations were carried out according to a state task (topic no. AAAA–A–19–119021890067–0).
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Translated by N. Astafiev
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Spivak, A.A., Riabova, S.A., Rybnov, Y.S. et al. Geophysical Effects of the November 26, 2019, Earthquake in Albania. Dokl. Earth Sc. 491, 155–159 (2020). https://doi.org/10.1134/S1028334X20030204
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DOI: https://doi.org/10.1134/S1028334X20030204