全球部分强震的序列参数分布特征

doi:10.12196/j.issn.1000-3274.2022.01.003

Abstract

Abstract: In order to investigate the numerical characteristics of sequence parameters for global strong earthquake, provide data support for the construction of operational aftershock forecasting (OAF) model and risk assessment, as well as related research on sequence parameters, the Omi-R-J model, which can make full use of incomplete seismic records, has been used to fit the parameters of 225 M≥6.5 earthquake sequences since 1973 in the world. The fitting of the parameters, as well as the parameter features in different plate boundaries are analyzed. The parameters of 225 earthquake sequences show a dominant numerical characteristic. The average values of the main parameters are p=1.0102±0.1777, log₁₀c=-3.1896±1.3249, log₁₀k=-4.3609±1.4596, b=0.9919±0.1651. There is a certain correlation between the sequence parameters and the plate boundary, for example in the circum Pacific seismic belt, in the p-value is lower in the Central America segment, the smaller b-value and the larger p-value are observed in the North American segment. All these work aims to provide some reference for the related research of sequence parameters.

Key words: Earthquake catalogue, Omi-Reasenberg-Jones model, Sequence parameter, Distribution characteristics

CLC Number:

P315.7

BI Jin-meng, JIANG Chang-sheng, LAI Gui-juan. The Numerical Characteristics of Sequence Parameters of Global Strong Earthquakes[J]. EARTHQUAKE, 2022, 42(1): 33-53.

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The Numerical Characteristics of Sequence Parameters of Global Strong Earthquakes

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