Monitoring of seismic events in neighborhood of Kostomuksha city

The study relevance is confirmed by recording of seismic events by stations of Karelia seismic network in neighborhood of Kostomuksha town. The Kostomuksha ore province is a large industrial cluster in the Republic of Karelia. The largest open pit mines operate in this region. For two decades, seismic stations record explosions induced by operation of the Karelskiy Okatysh Plant, as well a, seismic events which take place at untypical time for the explosions and are unrelated with production activities. Identification of such events is one of the major objectives in operation of the seismic network. A brief description of Karelia seismic network is given, and the calculation of the basic parameters of seismic events is presented. The data processing uses programs ELRESS and WSG. The records of explosions induced by operation of the Plant and natural seismic events are described as an example. The origin of the events is determined using the spectral analysis. This method allows finding distinguishing features of events of different origin. The records contain a distinct high-amplitude low-frequency surface wave. It is found that, depending on the distance to a seismic station, industrial explosions are recorded at the frequencies from 9 to 18 Hz. Natural seismic events have a frequency range from 5 to 18 Hz.

Zueva I. A., Lukina M. D., Rodionov G. N. Monitoring of seismic events in neighborhood of Kostomuksha city. MIAB. Mining Inf. Anal. Bull. 2025;(4):121-134. [In Russ]. DOI: 10.25018/0236_1493_2025_4_0_121.

The study was supported by the Russian Science Foundation, Grant No. 23-27-10002, https://rscf.ru/project/23-27-10002/, and by the Venture Capital Fund of the Republic of Karelia, Agreement No. 16-P23 от 25.04.2023.

I.A. Zueva¹, Cand. Sci. (Phys. Mathem.), Reseacher, e-mail: ek92wa@mail.ru, ORCID ID: 0000-0001-5952-9302,
M.D. Lukina¹, Senior Mathematician, e-mail: mariarychanchik@gmail.com,
G.N. Rodionov¹, Junior Researcher, e-mail: vegarus@inbox.ru, ORCID ID: 0000-0002-5941-7850,
¹ Institute of Geology of the Karelian Research Centre of the Russian Academy of Sciences, 185910, Petrozavodsk, Russia.

I.A. Zueva, e-mail: ek92wa@mail.ru.

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