Анализ устойчивости определения параметров гипоцентров сейсмических событий по данным сети KNET программами Hypocenter, HYP, Hypoellipse, HYPO71, Dbloc2

Е. В. Воронцова

doi:10.31431/1816-5524-2022-2-54-50-59

Vol. 54 No. 2 (2022),

Vol. 54 No. 2 (2022)

Analysis of the stability of determining the focal parameters of seismic events using the KNET network data by the programs Hypocenter, HYP, Hypoellipse, HYPO71, Dbloc2

https://doi.org/10.31431/1816-5524-2022-2-54-50-59

Published 2022-07-02

Е. В. Воронцова⁺⁻

Е. В. Воронцова

Research Station of the Russian Academy of Sciences, Bishkek

ФГБУ Научная станция РАН в г. Бишкеке, Бишкек

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Keywords

seismic catalog
epicenter
Hypocenter
location of seismic events

Section

Results of the Scientific Researches

Abstract

Parameters of hypocenters and times of 4760 seismic events taken from KNET catalog compiled by the Research Station of the Russian Academy of Sciences for the period since May 2003 till the end of 2020 have been determined by different programs: Hypocenter, HYP, Hypoellipse, HYPO71, Dbloc2. The smallest divergence of epicenters' coordinates is observed for the earthquakes, which have happened within the area of 41°–44.5°N and 73°–77.5°E entirely covering the territory of Bishkek geodynamic test site. Such an analysis can be used to assess the quality of seismic wave arrival times determination. The best agreement is observed between the programs Hypocenter and HYP: for more than 95% of events the epicenter displacement is less than 10 km and the change of time at origin is less than 0.5 sec. This indicates the preservation of the uniformity of the KNET seismological catalog when switching from using Hypocenter to HYP as the main locator program.

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