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Title: ASSESSMENT OF THE QUALITY FACTOR OF LITHOSPHERE FOR THE LENA DELTA (LAPTEV SEA REGION)
ASSESSMENT OF THE QUALITY FACTOR OF LITHOSPHERE FOR THE LENA DELTA (LAPTEV SEA REGION)

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Artem A. Krylov; Sergey A. Kovachev
10.5593/sgem2024/1.1/s05.59
10.5593/sgem2024/1.1
1314-2704
978-619-7603-67-5
English
24
1.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
5.Applied and Environmental Geophysics
The parameters of strong ground motions necessary for seismic hazard assessing of construction sites have pronounced regional differences. In inaccessible and poorly studied areas, the development of a ground motion prediction equation (GMPE) requires determination of regional characteristics of the radiation and propagation of seismic waves, in particular, the quality factor of the lithosphere.
This work is devoted to determination of the quality factor and its frequency dependence for the Lena Delta, one of the key areas of the Laptev Sea region, the most seismically active of all Arctic marine regions of Russia. For this purpose, the coda normalization method was used in relation to signals from 5 microearthquakes with Ml > 2, recorded by a temporary local network of seismographs operating in the Lena Delta in 2016-2017.
Regional values of quality factor Q = 486±42 were obtained. The scatter of values is probably due to the anisotropy of the environment in the study area. The dependence of the quality factor on frequency is described by the found function Q(f) = 84.328f0.8128. The exponent in this relationship is comparable to the values typical for regions of Mexico, Australia and Canada.
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This work was financially supported by the Russian Science Foundation, project no. 23-17-00125 (determination of the quality factor of the lithosphere of the Lena Delta), the Russian State Assignment, project no. FMWE-2024-0018 (routine processing of seismograms: earthquakes signals search, magnitude determination and localization).
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https://doi.org/10.5593/sgem2024/1.1/s05.59
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Proceedings of 24th International Multidisciplinary Scientific GeoConference SGEM 2024
24th International Multidisciplinary Scientific GeoConference SGEM 2024, 1 - 7 July, 2024
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
459-466
1 - 7 July, 2024
website
9886
quality factor of the lithosphere, Laptev Sea region, Lena Delta, seismic hazard assessment

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