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ACCURACY OF EPICENTERS LOCATION OF SEISMIC EVENTS BASED ON “MIKHEVO” SMALL-APERTURE SEISMIC ARRAY DATA. DO ADDITIONAL SEISMIC STATIONS NEEDED?
Sadovsky Institute of Geospheres Dynamics, Russian Academy of Sciences
Journal: Geophysical research
Tome: 21
Number: 2
Year: 2020
Pages: 48-60
UDK: 550.34.06
DOI: 10.21455/gr2020.2-4
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Sanina I., Volosov S., Goev A., Konstantinovskaya N., Nesterkina M., Tarasov S. ACCURACY OF EPICENTERS LOCATION OF SEISMIC EVENTS BASED ON “MIKHEVO” SMALL-APERTURE SEISMIC ARRAY DATA. DO ADDITIONAL SEISMIC STATIONS NEEDED? // . 2020. Т. 21. № 2. С. 48-60. DOI: 10.21455/gr2020.2-4
@article{SaninaACCURACY2020,
author = "Sanina, I. and Volosov, S. and Goev, A. and Konstantinovskaya, N. and Nesterkina, M. and Tarasov, S.",
title = "ACCURACY OF EPICENTERS LOCATION OF SEISMIC EVENTS BASED ON “MIKHEVO” SMALL-APERTURE SEISMIC ARRAY DATA. DO ADDITIONAL SEISMIC STATIONS NEEDED?",
journal = "Geophysical research",
year = 2020,
volume = "21",
number = "2",
pages = "48-60",
doi = "10.21455/gr2020.2-4",
language = "English"
}
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Keywords: East-European craton, temporary seismic network, small-aperture seismic array, waveforms, seismic events
Аnnotation: The results of evaluating the accuracy of determining coordinates of the epicenters of seismic events that are registries by small-aperture array Mikhnevo are given. Quarry blasts located in the central part of the East European platform were used as a source of the events. With confident identification of seismic wave arrivals (signal to noise ratio ³ 2), the small-aperture group independently provides high location accuracy and subsequent association of the event with the nearest quarry in coordinates. It is shown that the accuracy of the location strongly depends on the microseismic level, i.e. from signal to noise ratio. With a low signal to noise ratio (R£2), the accuracy of the location decreases and in this case, the data received from the additional seismic stations can be useful.
