METADATA IN ENGLISH
About the journal
SEISMICHESKIE PRIBORY, ISSN: 0131-6230, eISSN: 2312-6965, DOI: 10.21455/si,
http://elibrary.ru/title_about.asp?id=25597
English Translation: Seismic Instruments, ISSN: 0747-9239 (Print) 1934-7871 (Online),
https://link.springer.com/journal/11990
Redefining
the parameters of the initial seismological data as an important link
in the study
of the spatial characteristics of seismic activity
(for example, the earthquake of September 10, 2019, M=4.7,
in Armenia)
K.S. Kazaryan1, V.Yu. Burmin2, R.S. Sargsyan1,3
1 A.
Nazarov
Institute
of Geophysics and Engineering Seismology,
National
Academy of Sciences
of the Republic of Armenia, Gyumri, Armenia
2 Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia
3 M. Nalbandian Shirak State University, Gyumri, Armenia
Corresponding author: V.Yu. Burmin, e-mail: burmin@ifz.ru
Abstract. When conducting seismological studies, source data from various databases of international seismological services are often used. The determination of the coordinates of earthquake hypocenters by different seismological services gives different results, which is associated with different observing systems, processing methods and high-speed models. This circumstance can significantly affect the overall picture of the seismic process under study. In this regard, to identify the most preferable result, the accuracy of the initial data and the coordinates of the hypocenters of various interpretations were evaluated. Based on the data of international seismological services, the article clarifies the parameters of a tectonic earthquake recorded in the northern part of the Republic of Armenia on September 10, 2019 with a magnitude of M=4.7, and its aftershocks, as well as redefining the coordinates of hypocenters using the Hypo_Bur program. Due to the high accuracy of redefining the hypocenters of the main shock and aftershocks (the error in determining the coordinates of the hypocenters is in the range 0.1–2.4 km), the local nature of the seismic-generating zone is revealed. As a result of the redefinition, the initial epicenter of the main shock was shifted 28 km to the northwest, and the overall picture of the spatial distribution of aftershocks became more grouped. Mechanisms of the earthquake center of 10.09.2019 and its aftershocks were also constructed. A similar character of the kinematics of the Chaldyran-Viraayotsky fault and the obtained values of the main nodal plane of the earthquake source mechanism is shown.
Keywords: earthquake parameters, redefinition of parameters, earthquake in Armenia, Hypo_Bur software, refinement of epicenter coordinates, focal mechanism
About the authors
KAZARYAN Karlen Surenovich – A. Nazarov Institute of Geophysics and Engineering Seismology of NAS RA. Armenia, 3115, Gyumri, st. V. Sargsyan, 5. E-mail: g.karlen90@bk.ru
BURMIN Valery Yurievich – Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences. Russia, 123242, Moscow, ul. Bolshaya Gruzinskaya, 10, building 1. E-mail: burmin@ifz.ru
SARGSYAN Rudolf Surenovich – A. Nazarov Institute of Geophysics and Engineering Seismology of NAS RA. Armenia, 3115, Gyumri, st. V. Sargsyan, 5; M. Nalbandian Shirak State University. Armenia, 3126, Gyumri, st. P. Sevak, 4. E-mail: rudolf-sargsyan@mail.ru
Cite this article as: Kazaryan K.S., Burmin V.Yu., Sargsyan R.S. Redefining the parameters of the initial seismological data as an important link in the study of the spatial characteristics of seismic activity (for example, the earthquake of September 10, 2019, M=4.7, in Armenia), Seismicheskie Pribory, 2020, vol. 56, no. 4, pp. 43–56. (in Russian). https://doi.org/10.21455/si2020.4-3
English translation of the article will be published in Seismic Instruments, ISSN: 0747-9239 (Print) 1934-7871 (Online), https://link.springer.com/journal/11990)