METADATA IN ENGLISH
About the journal
SEISMICHESKIE PRIBORY, ISSN: 0131-6230, eISSN: 2312-6965, DOI: 10.21455/si,
English Translation: Seismic Instruments, ISSN: 0747-9239 (Print) 1934-7871 (Online),
seismic events around the Karelian Isthmus
and their nature
B.А. Assinovskaya1, I.P. Gabsatarova2, N.M. Panas1, M. Uski3
1 Federal Research Center of the Unified Geophysical Survey of RAS, St. Petersburg, Russia
2 Federal Research Center of the Unified Geophysical Survey of RAS, Obninsk, Russia
3 Institute of Seismology, Department of Geosciences and Geography of University of Helsinki, Finland
Corresponding author: I.P. Gabsatarova, e-mail: email@example.com
Abstract. 32 compactly localized seismic events with a unique wave pattern with ML in the range of –0.6…+2.1 were registered by the local St. Petersburg seismic network, for the first time in the aseismic Leningrad region. The nature of the events have been studied, the difference between the records of these events and the recordings of the explosions at the Vyborg station is shown by means of spectrograms and the cluster analysis. Focal parameters and a focal mechanism of thrust-strike movement along a possible fault plane of the north-western direction were determined which proves the tectonic origin of the events. Synthetic seismograms of the strongest event on December 18, 2016 at 00h 20 min have been constructed, the shape of which corresponds to the position of the source at a depth of 2 km. A map of earthquake epicenters was compiled, and NS directed seismogenic zone of 4 km in length was identified as a fault that limits the Vyborg rapakivi intrusion from the east, and possibly a new rupture that has occurred in the region of the long and intensely functioning Erkilja quarry. The regional earthquakes that took place in the historical and instrumental periods of observations were described. A database of explosions from known quarries has been created. The velocity model was refined.
Keywords: explosion, quarry, tectonic earthquake, earthquake catalogue, seismic stations, Vyborg rapakivi intrusion.
About the authors
ASSINOVSKAYA Bela Aleksandrovna – Candidate of Physical and Mathematical Sciences, acting leading research officer, Federal Research Center “United Geophysical Service of the Russian Academy of Sciences”. 197140, St. Petersburg, Pulkovskoe highway, 65, building 12. Phone: +7(812) 363-74-19. E-mail: firstname.lastname@example.org
GABSATAROVA Irina Petrovna – Candidate of Physical and Mathematical Sciences, Head of Laboratory, Federal Research Center “United Geophysical Service of the Russian Academy of Sciences”. 249035, Obninsk, prosp. Lenina, 189. Phone: +7(495) 912-68-72. E-mail: email@example.com
PANAS Natalia Mikhailovna – Engineer, Federal Research Center “United Geophysical Service of the Russian Academy of Sciences”. 197140, St. Petersburg, Pulkovskoe shosse, 65, building 12. Phone: +7(812) 363-74-19. E-mail: firstname.lastname@example.org
JUSKI Marya – PhD, seismologist, Institute of Seismology, Department of Earth Sciences and Geography, University of Helsinki. PL 68 (Gustaf Hällströmin katu 2b) 00014 University of Helsinki Finland. Phone: +358 29-415-16-09. E-mail: Marja.Uski@helsinki.fi
Cite this article as: Assinovskaya B.А., Gabsatarova I.P., Panas N.M., Uski M. 2014–2016 seismic events around the Karelian Isthmus and their nature. Seismicheskie Pribory, 2018, Vol. 54, no 1, pp. 40-61. DOI: 10.21455/si2018.1-4 (in Russ.).
English translation of the article will be published in Seismic Instruments, ISSN: 0747-9239 (Print) 1934-7871 (Online), https://link.springer.com/journal/11990), 2019, Volume 55, Issue 1.