Modern capabilities of the Karelian Regional Seismic Network in recording of blasting-induced seismicity in Karelia

The stationary seismic network (SN) operates in Karelia since 1999. In 2000 PTRZ seismic station was installed in the Botanic Garden in Petrozavodsk under the guidance of Doctor of Geological and Mineralogical Sciences N. V. Sharov. Currently seismic observations are carried out in four regions in Karelia. The Karelian SN has the up-to-date wideband equipment. Seismic observations record up to 50 events of different nature every month. Most of them are the manmade seismicity induced by large-scale blasting operations in open pit mines. Around 30 open pits operate in Karelia. Most of them are situated at the Ladoga and Onega Lakes. Blasting is carried out regularly 1–3 times a week in some pits, or once a month or even less frequently in the other pits. The article proposes an integrated approach to processing weak seismic signals using different methods and programs. The main parameters of seismic events recorded by different seismic services in Karelia in 2019 are compared. The data source was the joint catalog of the seismic services of Karelia, Finland and Norway. The seismicity charts of the test area are compiled. The analysis shows that the functional capacities and geographic location allows the Karelian SN to obtain the extensive information on seismicity in Karelia. The seismology networks in the neighbor areas and countries are incapable to assess comprehensively the seismic situation in Karelia because of remoteness from the epicenters of seismic events.

Zueva I. A. Modern capabilities of the Karelian Regional Seismic Network in recording of blasting-induced seismicity in Karelia. MIAB. Mining Inf. Anal. Bull. 2022;(9):7486. [In Russ]. DOI: 10.25018/0236_1493_2022_9_0_74.

The study was carried out under the state contract with the Institute of Geology of the Karelian Science Center of the Russian Academy of Sciences, R&D 213 Topic No. AAAA-A18-118020290086-1.

A.A. Zueva, Junior Researcher, e-mail: ek92wa@mail.ru, ORCID ID: 0000-0001-5952-9302, Institute of Geology of the Karelian Research Centre of the Russian Academy of Sciences (IG KarRC RAS), Petrozavodsk, 185910, Russia.

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