Unification of Magnitudes for Modern Earthquakes in the Eurasian Arctic Region

IF 0.3 Q4 GEOCHEMISTRY & GEOPHYSICS Seismic Instruments Pub Date : 2022-08-03 DOI:10.3103/S0747923922040077

A. N. Morozov, N. V. Vaganova, Ya. A. Mikhailova, I. V. Starkov

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引用次数: 3

Abstract

The article presents the results of identifying correlation relationships between magnitudes of different types, calculated in international and regional seismological centers. An increase in the number of seismic stations in the Arctic in the 21st century and corresponding increase in the number of recorded earthquakes (due to a decrease in the threshold recording magnitude) has made it possible to identify quantitative relationships between magnitudes based on large samplings of earthquakes and in a wide range of magnitudes. From International Seismological Center data for 1995–2020, we obtained 30 ratios between magnitudes of different types, calculated at different seismological centers, in particular, magnitudes ranging from m_b and M_S 2.6 and M_L = 0.8. The identified relationships will make it possible to compile an aggregated unified catalog of earthquakes for certain regions of the Arctic, which is necessary, primarily, for assessing the seismic hazard of certain areas, as well as studying low-magnitude earthquakes and clusters and swarms of such quakes.

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欧亚北极地区现代地震震级的统一

本文介绍了国际和区域地震中心计算的不同类型震级之间相关关系的识别结果。21世纪北极地区地震台站数量的增加以及记录到的地震数量的相应增加(由于记录震级的阈值降低)，使得基于大地震采样和大震级范围确定震级之间的定量关系成为可能。从国际地震中心1995-2020年的数据中，我们得到了在不同地震中心计算的不同类型震级之间的30个比值，特别是从mb和MS 2.6和ML = 0.8的震级。确定的关系将使编制北极某些地区的汇总统一的地震目录成为可能，这主要是为了评估某些地区的地震危险性，以及研究低震级地震和此类地震的群集和群。

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来源期刊

Seismic Instruments GEOCHEMISTRY & GEOPHYSICS-

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44.40%

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期刊介绍： Seismic Instruments is a journal devoted to the description of geophysical instruments used in seismic research. In addition to covering the actual instruments for registering seismic waves, substantial room is devoted to solving instrumental-methodological problems of geophysical monitoring, applying various methods that are used to search for earthquake precursors, to studying earthquake nucleation processes and to monitoring natural and technogenous processes. The description of the construction, working elements, and technical characteristics of the instruments, as well as some results of implementation of the instruments and interpretation of the results are given. Attention is paid to seismic monitoring data and earthquake catalog quality Analysis.